A 1 1 1 0 2 mt.15^

MBS A UNITED STATES DEPARTMENT OF PUBLICATION s NSRDS—NBS 3, Section 4

NATL INST OF STANDARDS & TECH R.I.C.

All 102146129

/NSRDS-NBS

QC100 .1)573 V3;4;1971 C.2 NBS-PUB-C 1964

DEPARTMENT

OF

COMMERCE

National

Bureau

of

Standards

/(

,

• -

Selected Tables of Atomic Spectra

Atomic Energy Levels and Multiplet Tables

Niv, Nv, Nvi, Nvn
NATIONAL BUREAU OF STANDARDS

The National Bureau of Standards1 was established by an act of Congress March 3,

1903. The Bureau’s overall goal is to strengthen and advance the Nation’s science and

technology and facilitate their effective application for public benefit. To this end, the

Bureau conducts research and provides: (1) a basis for the Nations physical measure- ment system, (2) scientific and technological services for industry and government, (3)

a technical basis for equity in trade, and (4) technical services to promote public safety.

The Bureau consists of the Institute for Basic Standards, the Institute for Materials

Research, the Institute for Applied Technology, the Center for Computer Sciences and

Technology, and the Office for Information Programs.

THE INSTITUTE FOR BASIC STANDARDS provides the central basis within the

United States of a complete and consistent system of physical measurement; coordinates

that system with measurement systems of other nations; and furnishes essential services

leading to accurate and uniform physical measurements throughout the Nation’s scientific community, industry, and commerce. The Institute consists of a Center for Radiation Research, an Office of Measurement Services and the following divisions’. Applied Mathematics—Electricity—Heat—Mechanics—Optical Physics—Linac

Radiation2—Nuclear Radiation2—Applied Radiation 2—Quantum Electronics3—

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. THE INSTITUTE FOR MATERIALS RESEARCH conducts materials research leading to improved methods of measurement, standards, and data on the properties of

well-characterized materials needed by industry, commerce, educational institutions, and

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and develops, produces, and distributes standard reference materials. The Institute consists of the Office of Standard Reference Materials and the following divisions:

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THE OFFICE FOR INFORMATION PROGRAMS promotes optimum dissemination

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Relations.

1 Headquarters and Laboratories at Gaithersburg, Maryland, unless otherwise noted; mailing address Washington, D.C. 20234.

2 Part of the Center for Radiation Research.

3 Located at Boulder, Colorado 80302.
XTIONAl BUREAU OF SOTw

SEP 1 0 1971

UNITED STATES DEPARTMENT OF COMMERCE • Maurice H. Stans, Secretary

t NATIONAL BUREAU OF STANDARDS • Lewis M. Branscomb, Director

Selected Tables of Atomic Spectra

A Atomic Energy Levels-Second Edition

B Multiplet Tables

N iv, N v, N vi, N vii

Data Derived From the Analyses of Optical Spectra

Charlotte E. Moore

Office of Standard Reference Data

National Bureau of Standards

Washington, D.C. 20234

t'

NSRDS-NBS 3, Section 4

Nat. Stand. Ref. Data Ser., Nat. Bur. Stand. (U.S.), 3, Sec. 4, 46 pages (Aug. 1971)

CODEN: NSRDA

(c) 1970 by the Secretary of Commerce on Behalf of the United States Government

Issued August 1971

For Sale by the Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402

(Order by SD Catalog No. C 13.48:3/Sec. 4), Price 55 cents
Abstract

The present publication is the fourth Section of a series being prepared in response to the

persistent need for a current revision of two sets of tables containing data on atomic spectra as derived from analyses of optical spectra. As in the previous Sections, Part A contains the atomic

energy levels and Part B the multiplet tables. Four spectra of nitrogen, N IV, N V, N VI and N vil, are included. The form of presentation is described in detail in the text to Section 1.

Key words: Atomic energy levels, N iv-N VII; Nitrogen spectra, N iv-N VII; Multiplet tables,

N IV-N VII; Spectra, N IV-N VII; Wavelengths, nitrogen spectra N iv-N VII.

Library of Congress Catalog Card Number: 64-60074
Foreword

The National Standard Reference Data System provides effective access to the quantitative

data of physical science, critically evaluated and compiled for convenience, and readily accessible

through a variety of distribution channels. The System was established in 1963 by action of the

President’s Office of Science and Technology and the Federal Council for Science and Technology,

with responsibility to administer it assigned to the National Bureau of Standards.

The System now comprises a complex of data centers and other activities, carried on in aca- demic institutions and other laboratories both in and out of government. The independent operational status of existing critical data projects is maintained and encouraged. Data centers that are components of the NSRDS produce compilations of critically evaluated data, critical reviews of the

state of quantitative knowledge in specialized areas, and computations of useful functions derived

from standard reference data. In addition, the centers and projects establish criteria for evaluation

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techniques. They are normally closely associated with active research in the relevant field. The technical scope of the NSRDS is indicated by the principal categories of data compilation

projects now active or being planned: nuclear properties, atomic and molecular properties, solid state properties, thermodynamic and transport properties, chemical kinetics, and colloid and

surface properties and mechanical properties.

The NSRDS receives advice and planning assistance from the National Research Council of

the National Academy of Sciences-National Academy of Engineering. An overall Review Committee

considers the program as a whole and makes recommendations on policy, long-term planning, and

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regularly to examine major portions of the program, assign relative priorities, and identify specific

key problems in need of further attention. For selected specific topics, the Advisory Panels sponsor

subpanels which make detailed studies of users’ needs, the present state of knowledge, and existing

data resources, as a basis for recommending one or more data compilation activities. This assembly

of advisory services contributes greatly to the guidance of NSRDS activities.

The NSRDS-NBS series of publications is intended primarily to include evaluated reference

data and critical reviews of long-term interest to the scientific and technical community.

Lewis M. Branscomb, Director

III
Preface

The present publication is the fourth Section of a series that is being prepared in response to the increasing demand for a current revision of two sets of tables containing data on atomic spectra

as derived from analyses of optical spectra.

The first set. Atomic Energy Levels, NBS Circular 467, consists of three Volumes published,

respectively, in 1949, 1952, and 1958, and a fourth one on rare-earth spectra, still in course of

preparation. This Circular has been reprinted as NSRDS—NBS 35, Volumes I, II, and III. The second set consists of two Multiplet Tables; one published in 1945 by the Princeton Unio versity Observatory containing multiplets having wavelengths longer than 3000 A; the other, An

Ultra-Violet Multiplet Table, NBS Circular 488, appearing in five Sections, the first in 1950, the

second in 1952, and the others in 1962. The 1945 Princeton Multiplet Table is being reprinted as NSRDS-NBS 40.

The present series includes both sets of data, the energy levels and multiplet tables as parts

A and B, respectively, for selected spectra contained in Volume I of “Atomic Energy Levels.” The

Sections are being published at irregular intervals as revised analyses become available. A flexible

paging system permits the arrangement of the various Sections by atomic number, regardless of

the order in which the separate spectra are published. Section 1 includes three spectra of silicon,

Z = 14: Si II, Si III, Si IV. Section 2 contains similar data for Si I. Section 3 covers all the spectra

of carbon, Z = 6: Cl, C II, C III, C IV, C V, C VI. Section 5 is scheduled to include the remaining

spectra of nitrogen: N I, N II, N III. The form of presentation of the data is described in detail in

the text of Section 1. All Sections are arranged identically and the same conversion factor, cm -1

to eV, 0.000123981 is used throughout.

The manuscript has been prepared by Charlotte E. Moore of the Office of Standard Reference

Data, who published the earlier tables. She appreciates the cordial cooperation of the numerous

atomic spectroscopists whose work is quoted here. She is particularly indebted to B. Edlen for his

valuable guidance and advice. K. Bockasten and S. G. Tilford have also been most cooperative.

The splendid work of Barbara N. Somerville in typing the press copy of this difficult tabular material

is gratefully acknowledged.

Washington, D.C., December 18, 1970.

IV
Contents

Page Abstract II Foreword Ill Preface IV

Element:

Nitrogen:

Element:

Nitrogen:

Part A — Atomic Energy Levels

Z Spectrum

7

N iv

Nv..,

N vi

N vn

Part B — Multiplet Tables

Z Spectrum

7

N iv

N v N vi

N vii

A7 iv 1 to A7 iv 5

A7 v 1 to A7 v 3

A7 vi 1 to A7 vi 2

A7 vii 1 to A7 vii 2

B7 iv 1 to B7 iv 10

B7 v 1 to B7 v 4

B7 vi 1 to B7 vi 1 B7 vii 1 to B7 vii 3

v
NSRDS-NBS 3, SECTION 4

NITROGEN. Z = 7

A N iv Atomic Energy Levels

B N IV Multiplet Table
Atomic Energy Levels

Part A NITROGEN

N iv

Be I sequence; 4 electrons Z = 7

Ground state Is2 2s 2 ‘So

2s 2 ‘So 624866 ± 3, 160.034 A (Vac) I P 77.472 eV

The early analysis by Edlen has been revised and extended by R. Hallin, who has observed

the spectrum from 300 A to 8000 A with a theta-pinch discharge as source. Hallin lists 127 classified

lines and derives the ionization limit 624864.7±2 cm'1 from hydrogen-like terms and by using

the polarization formula. A slight revision of this value by A. Olme in 1970 is quoted above.

The triplet and singlet systems are connected by the two intersystem combination lines at 823 A and 1486 A.

o o D. J. Michels has carried the analysis further by observations in the range 159 A to 463 A made

with a Hinteregger-type water-cooled quartz capillary discharge tube — a windowless source operated as a pulse discharge. He reports 250 classified lines of which 22 are included by Hallin

Fifty-three of his new terms lie above the first ionization limit.

Michels introduces some revisions to the 1966 analysis. He interchanges the terms 4s 3 S and

3p' 3 S. This change has been adopted, but Hallin’s values have been retained, as they are based

on observations in the longer wavelength region. The level 3d' ‘P° has been revised by correcting

o a transcript error in the earlier work. This change leaves the line of intensity 2 at 2594.34 A unclassified. Improved values for 6d 3D, 4p' ‘D and 4,5c?' 3D° have resulted from the 1970 observations.

One member in each of three series is missing because of masking: 5p' ‘D, 5d' ‘F° and 12c?' 3 D°.

REFERENCES

R. Hallin, Ark. Fys. (Stockholm) 32, No. 11, 201-210 (1966). I P, T, C L, G D

D. J. Michels, J. Opt. Soc. Am. 61, No. 5, 625-631 (1971).

A. Olme, Physica Scripta 1, 256-260 (1970). I P

A7 iv-1
Atomic Energy Levels

Niv Niv

Config. Desig. J Level Interval Config. Desig. J Level Interval

2s2 2s2 'S 0 0.0 2p( 2P°)3d 3d' 3D° 1 505554.0

34.2 42.4

2 505588.2

2s( 2S)2p 2p 3 P° 0 67209.2

63.1 3 505630.6

1 67272.3

2 67416.3

144.0 2p{ 2P°,/2 )3d 3d' *F° 3 506284.8

2s( 2S)2p 2p 'P° 1 130693.9 2s( 2 S)4p 4p 'P° 1 507027.9

2p

2 2p2 3P 0 175535.4

72.7

2s( 2S)4d 4<7 3D 1 511440

1 175608.1 2 511446

2 175732.9

124.8

3 511448.0

z

2P

2 2p2 'D 2 188882.5 2p( 2P°l/2 )3d 3d' 3P° 2 511509.3 -51.1

2p2 >S

1 511560.4 -30.8

2p

2 0 235369.3 0 511591.2

2s( 2S)3s 3s 3S 1 377284.8 2s( 2 S)4d 4rf 'D 2 514647.7

2s( 2S)3s 3s »S 0 388854.6 2p(2 Pu/2 )3p 3p' ’S 0 515569.8

2s( 2S)3p 3p 'P° 1 404522.4

2s( 2S)4/ 4/ 3 F° 2 516552.6

8.2 2s( 11.2 2S)3p 3p

3P° 0

1

405971 .6 405987.5

15.9 35.3

34

516560.8

516572.0

2 406022.8

2p(2 P°i/z )3d 3d' >P

0

1 518610.5

2s ( 2S )3d 3d 3D 1 420045.8

3.8 521862.8

2 420049.6 2s( 2 S)4/ 4f

J F° 3

3 420058.0

o.4

2s( 2S)5s 5s 3S 1 544813.4

2s{ 2S)3d 3d 'D 2 429159.6

2s( 2S)5s 5s ’S 0 546731.3

2p( 2P°)3s 3s' 3P° 0 465291 .8 79.2 550232.6

1 465371 .0 2s( 2 S)5p 5p >P° 1

2 465536.6

165.6

2s( 2S)5d 5rf 3D 1, 2 552789.6

1.3 2p( 2P?„2 )3s 3s' >P° 1 473029.3 3 552790.9

2p( 2PS,/2 )3p 3p' 'P 1 480884.2 2s( 2S)5d 5rf 'D 2 554300.7

2p( 2P°)3p 3p' 3D 1 484498.2 Q6 7

2s( 2S)5g Sg 'G 4 554339.1

2 484594.9

151.3

3 484746.2 2s( 2 S)5g 5g 3G 3,4, 5 554339.7

2s( 2 S)4s 4s 3 S 1 487607.4 2s( 2S)5/ 5f

3F° 2, 3, 4 554571.8

2p( 2P°)3p 3p' 3P 0 494253.1

56.1

2s( 2 S)5/ 5/ *F° 3 554995.7

1 494309.2

2 494402.0

92.8

2s( 2S)6s 6s 3S 1 570381.3

2s( 2S)4s 4s ‘S 0 495057.7 2s( 2 S)6s 6s 0 571172.1

2p( 2P°)3d 3d' 3 F° 2 495406.2

76.4

2s( 2 S)6p 6p >P° 1 572731.1

3 495482.6

4 495585.7 103.1 2s( 2 S)6d 6r/ 3D 1, 2, 3 575030.5

2p( 2P°i/ 2 )3p 3p' 3S 1 498045.5 2s( 2 S)6g 6g 'G 4 575807.9

2p( 2 P°)1/ 2 )3d 3d' >D° 2 498310.3 2s( 2S)6^ 6p 3G 3, 4, 5 575809.4

2p( 2P°i/2 )3p 3

p' 'D 2 499705.9 2s( 2S)6d 6rf 'D 2 575872.4

2s( 2S)4p 4p 3P° 2 503680.4

-11.5

2s( 2S)6/ 6/ 'F° 3 575999.3

1 503691 .9

1 0 503699.8

-7.9

1 2s ( 2 S ) 6/z 6/i 13H

0 4, 5, 5, 6 576042.9

A7 iv-2
Atomic Energy Levels

N IV —Continued IN IV —Continued

Config. Desig. J Level Interval Config. l^lesig. J Level Interval

2p( 2 P°)4s 4s' 3 P' 0 577957.8

87 6

2s( 2 S)9d 9(7 3D 1, 2, 3 602865.7

1 578045.4

165.2

2 578210.6 2s( 2S)9d 9(7 ‘D 2 603107.3

2p(2P°i/2 )4s 4s' >P° 1 580817.5 2s( 2 S)10s 10s 3S 1 606142.6

2p(2Poi/2 )4p 4p' ‘P 1 584661.6 2s ( 2S ) lOp 10p >P° 1 606818.2

2s( 2S)7s 7s

3S 1 584977.1 2s ( 2 S) 10(7 10(7 3D 1, 2, 3 607064.2

2s( 2S)75 7s *S 0 584983.3 2s ( 2 S) 10(7 10(7 'D 2 607242.9'

2p(2P°)4p 4p' 3D 1 585709.5

88 6

2s( 2 S)lls 11s 3S 1 609465.8

2 585798.1

131.7

3 585929.8 2s( 2 S)llp lip >P° 1 609945.8

2s( 2S)7p Ip >P° 1 587979.4 2s ( 2 S ) 1 1(7 11(7 3D 1, 2, 3 610166.0

2s( 2 S)7(7 Id 3D 1, 2, 3 588382.6 2s( 2 S) 11(7 11(7 ‘D 2 610287.2

2p( 2PSi/2 )4c? 4(7' >D° 2 588689.0 2s( 2 S)12p 12p 'P° 1 612328.6

2p( 2 P°)4p 4p' 3P 0 588790.1

201 1 2s( 2 S) 12(7 12(7 3D 1, 2, 3 612525.1

1 588991.2

68.1

2 589059.3 2s( 2 S) 12(7 12(7 'D 2 612621.6

2s( 2 S)7(7 7d 'D 2 588884.0 2s( 2 S) 13p 13p >P° 1 614190.3

2s( 2 S)7/i 7h'-3U° 4, 5, 5, 6 588994.3

2s( 2 S) 13(7 13(7 3D 1, 2, 3 614380.6

2s(2S)7i 7P’ 3I 5, 6, 6, 7 589021.4

2s( 2 S)13d 13(7 >D 2 614470.5

2p( 2 P°i/2 )4rf 4(7' 'F° 3 591047.8

2s ( 2S) 14(7 14(7 3D 1, 2, 3 615894.4

2p( 2P°i/2 )4p 4p' >D 2 591060.9

2s ( 2 S) 15(7 15(7 3D 1, 2, 3 617038.7

2p(2P°)4(7 4rf' 3D° 1 593690.0

23.7 N v ( 2 S0i/ 2 ) Limit 624866±3

2 593713.7 58.4

3 593772.1

2p( 2 P°)5s 5s' 3P° 0 626355.0 90 3 2p( 2 P°,/2 )4p 4p' >S 0 594182.6 1 626445.3

166.6

2 626611.9 2p(2P°)4(7 4(7' 3P° 2 594489.9 — 57 8

1 594547.7 -26.1

0 594573.8 2p( 2P?l/2 )5tK 5s' >P° 1 628546.9

2p( 2P?1/z )4p 4p' 3S 1 595296.3 2p( 2P,°i/2 )5p 5

p' >P 1 629845.3

2s( 2 S)85 8s ‘S 0 596150.1 2p(2 P°)5p 5p' 3D 1 630268.8

64 8

2 630333.6

139.4

2s(2 S)8p 8p «P° 1 596270.9 3 630473.0

2s(2 S)8(7 8(7 3D 1, 2, 3 597026.8 2p( 2 P°)5p 5p' 3P 0

1 631807.7

60.5

2s( 2 S)8(7 8(7 ] D 2 597349.1 2 631868.2

2s( 2 S)8s 8s 3 S 1 597481.6 2p( 2 P°)5(7 5(7' 3D° 1 634158.4

24.4

2 634182.8 2p(2 P°i/2 )4rf 4(7' 'P° 1 598538.2 3 634263.4

80.6

2s( 2S)9s 9s 3 S 1 601621.5 2p( 2P°)5(7 5(7' 3P° 0. 1,2 634669.5

2s ( 2S )9p 9p «P° 1 602609.3 2p( 2P?i/2 )5(7 5(7' *P° 1 636467

A7 iv-3

421-375 OL - 71 - 2
Atomic Energy Levels

N IV —Continued N IV —Continued

Config. Desig. J Level Interval Config. Desig. J Level Interval

2p(2P°)6s 6s' 3P° 0 651590.1

81 7 2p(2P°)8(7 8(7' 3P° 0, 1, 2 678025.9

1 651671.8 lftft 1 2 651859.9 2p( 2P°i/2 )8(7 8(7' «P° 1 678355

2p( 2Po°./2 )6p 6

p' >P 1 653629.9

! 2p( 2P°)9s 9s' 3 P° 0

2p(2 P°)6p 6p' 3D 1

12 682464.8

2 653909.4

144.5

3 654053.9 2p( 2 P°)9p 9

p' 3 D 1

2p( 2P°)6p 6

p' 3P 0, 1, 2 654791.3

z3 683092.7

2p(

2P°n/2 )6rf 6<7' 'F° 3 655270.0 2p( 2 P°)9p 9p' 3 P 0, 1, 2 683278.4

2p(2 P°./2 )6p 6p' ‘D 2 655284.1 2p( 2 P°,

/2 )9p 9p' 'D 2 683399.9

2p( 2P°)6(7 6d' 3D° 1 656043.6

31.1 2p( 2 P°)9(7 9(7' 3 D° 1, 2, 3 683692.6

2 656074.7

81 0

3 656155.7 2p( 2 P°)9(7 9(7' 3 P° 0, 1, 2 683857.8

2p( 2P°)6rf 6c?' 3P° 0, 1, 2 656349.6 2p( 2 P?,J9(7 9(7' >P° 1 684015

2p( 2Pfi/2 )6rf 6(7' «P° 1 657392

2p( 2P°) 10s 10s' 3P° 0

2p( 2P°)7s 7s' 3P° 0

12 686954.2

1 666458.2 907 9 2 666665.4 zu / .z 2p( 2 P°)10p 10p' :, D 1

2p( 2Poi/2 )7p 7p' «P 1 667698.9

2

3 687432.9

2p( 2 P°)7p 7

p' 3D 12 667872.6 2p( 2 P°)10p 10p' 3 P 0, 1, 2 687548.3

3 668031.3

loo. /

to "C

-o 10p' 'D 2 687629.4

2p( 2 P°)7p Ip' 3P 0, 1, 2 668460.9

2p( 2 P°)10(7 10(7' 3 D° 1, 2, 3 687875.8

2p(2P?i/2 )7p 7p' 'D 2 668753.5

2p( 2 P°)10(7 10(7' 3 P° 0, 1, 2 688022.7

2p(2P°)7(7 7(7' 3D° 1, 2, 3 669328.5

2p( 2 P°1/z )10(7 10(7' 'P° 1 688094

2p( 2P°)7(7 7(7' 3P° 0, 1, 2 669596.6

2p( 2 P°)llp lip' 3 P 0, 1, 2 690659.5

2p( 2P°i/2 )7<7 Id' >P° 1 670086

2p( 2 Pr,/2 )np lip' ’D 2 690770.5

2p( 2P°)8s 8s' 3P° 0

1 2p( 2 P°)ll(7 11(7' ! D° 1, 2, 3 690976.4

2 676090.7

2p( 2 P°)12p 12p' 3P 0, 1, 2 693069.3

2p( 2P«

<;,/2 )8p 8p' ‘P 1 676706.4

2p( 2 P°)13p 13p' 3 P 0, 1, 2 694902.7

2p( 2 P°)8p 8p' 3D 12 2p( 2 P°)13(7 13(7' 3 D° 1, 2, 3 695124.4

3 676994.0

2p( 2P°)8p 8p' 3P 0, 1, 2 677276.5

Nv(2p 2P,:

i/t ) Limit 705327.9 2p( 2 Pn/2 )8p 8p' 'D 2 677458.7 259.7 N v(2p 2 P° 1/z ) Limit 705586.6 2p( 2P°)8(7 8(7' 3D° 1, 2, 3 677844.3

October 1970.

A7 iv-4
Atomic Energy Levels

N IV Observed Terms

Config. ls 2 + Observed Terms

2s 2 2s 2 »S

2s( 2S)2p

{

2p 3P°

2p’P°

2p 2 / 2p 23P

tl 2

p

2 «S 2

P

2 'D

ns(n 35 3) np(n 5* 3) rid(n 2 3)

2s( 2S)nl

f 3-1 Is 3S 3, 4p 3P° 3-15d

3D

l 3-8s »S 3-13p >P° 3-13d D

2p( 2P°)ra/' 1

3 -10s' 3P° 3,4p' 3S 3-13p' 3P 3-10p' 3D 3-10</' 3P° 3-11, 13d' 3D° 3d' 3F°

l 3-5s' >P° 3,4p"S 3-8p' «P 3,4,6-llp' 'D 3-IOgT 'P° 3,4d' 'D° 3,4, 6d' 'F°

nf{n s=4) ng(n 3= 5) nh(n 2: 6) ni(n 7)

2s(2 S)nl

f 4, 5f

:I F°

^ 4-6/ ‘F°

5, 6g 3G

5, 6g >G 6,7h

3, l H

o 7i 3 - 'I

A7 iv-5
' B
Multiplet Table

Part B NITROGEN

N iv (Z = 7)

I P 77.472 eV Limit 628466 ± 3 cm"1 160.034 A (Vac)

Anal A List A October 1970

REFERENCES

A. Olme, Physica Scripta 1, 256-260 (1970). I P

A R. Hallin, Ark. Fys. (Stockholm) 32, No. 11, 201-210 (1966). I P, T, C L, I; W L, 300 A-7702 A

B D. J. Michels, J. Opt. Soc. Am. 61, No. 5, 625-631 (1971), and private communication regarding intensity estimates.

T, CL, G I), Theory(I); W L, 159A-463A

C B. Edlen, Nova Acta Reg. Soc. Sci. Uppsala [IV] 9, No. 6, 62-65 (1934). T, C L, I; W L, 181 A-7127 A

P Predicted Lines

In column 3 parentheses indicate that the estimated intensities are from a different reference and on a different scale than the entries without parentheses.

New Multiplet Numbers, not inserted between older ones, start with UV 20 and 18.

*Blend

tRaie ultime

N iv N iv

I A Ref Int E P

J

Multiplet No. I A Ref Int E P

J

Multiplet No. Low High Low High

Vac

1486.496 A 2 0.00 8.34 0-1 2s 2 'S - 2p

3 P°

UV 0.01

Vac

211.405 B (400) 0.00 58.65 0-1 2s2 >S - 3s' UV 2.03

ipo

765.148$ A 15 0.00 16.20 0-1 2s 2 'S - 2p >P° UV 1 197.230 C (500) 0.00 62.86 0-1 2s 2 ‘S — 4p

UV 2.04

ipo

569.450 P 0.00 21.77 0-1 2s 2 *S - 2p 23 P

UV 1.01F

192.823 P 0.00 64.30 0-1 2s2 S - 3d' UV 2.05

ipo

529.430 P 0.00 23.42 0-2 2s 2 >S - 2p 21 D

UV 1.02F

181.746 C (400) 0.00 68.22 0-1 2s 2 'S - 5p

UV 2.06

ipo

424.864 P 0.00 29.18 0-0 2s 2 'S - 2p 21 S

UV 1.03F

174.602 B (200) 0.00 71.01 0-1 2s 2 'S - 6p

UV 2.07

ipo

247.205 C (900) 0.00 50.15 0-1 2s 2 *S - 3p «P° UV 2

172.171 P 0.00 72.01 0-1 2s2 'S - 4s' UV 2.08

ipo

246.313 P 0.00 50.33 0-1 2s 2 'S - 3p

3 P°

UV 2.01

170.074 B (200) 0.00 72.90 0-1 2s2 S - Ip

UV 2.09

ipo

214.882 P 0.00 57.70 0-1 2s 2 'S - 3s' 3P°

UV 2.02

167.709 B (150) 0.00 73.93 0-1 2s2 S - 8p UV 2.10 P°

B7 iv—

1
Multiplet Table

N iv — Continued N iv — Continued

I A Ref Int E P

J

Multiplet No. I A Ref Int E P

J

Multiplet No. Low High Low High

Vac Vac

167.074 P 0.00 74.21 0-1 2s2 *S - 4d' 1 P° 234.195 C (600m;)* 8.36 61.30 2-2 2p

3 P°- 3p' 3 P

UV 2.11 234.172 P 8.34 61.28 1-1 UV 5.05 234.249 C (600m;)* 8.36 61.28 2-1

165.945 B (50) 0.00 74.71 0-1 2s 2 *S - 9p >P° 234.203 P 8.34 61.28 1-0

UV 2.12 234.124 C (600m;)* 8.34 61.30 1-2

164.794 B (30) 0.00 75.23 0-1 2s 2 »S -10p *P° 233.762 P 8.34 61.38 1-0 2p

3 P°- 4s >S UV 2.13 UV 5.06

163.949 B (lOd) 0.00 75.62 0-1 2s 2 «S -lip 'P° 232.223 B (200) 8.36 61.75 2-1 2p

3 P°- 3p' 3 S

UV 2.14 232.145 B (150) 8.34 61. 75- 1-1 UV 5.07 232.112 B (100) 8.33 61.75 0-1

163.311 B (M) 0.00 75.92 0-1 2s 2 >S — 12p >P° UV 2.15 231.326 P 8.36 61.95 2-2 2p

3 P°- 3

p' 'D

231.249 P 8.34 61.95 1-2 UV 5.08 162.816 B (Id) 0.00 76.15 0-1 2s 2 >S — 13p >P° UV 2.16 225.212 B (800) 8.36 63.41 2-3 2p

3 P°- 4d3 D

225.142 B] [8.34 63.41 1-2 UV 6 225.110 BJ

(800m;)*

[8.33 63.41 0-1

923.220 A 16 8.36 21.79 2-2 2p

3 P°- 2p 23P 223.598 P 8.36 63.81 2-2 2p

3 P°- 4d >D 923.057 A 14- 8.34 21.77 1-1 UV 3 223.526 P 8.34 63.81 1-2 UV 6.01 924.283 A 14 + 8.36 21.77 2-1

923.675 A 14 8.34 21.76 1-0 223.066 P 8.34 63.92 1-0 2p

3 P°- 3

p'

*S 921.992 A 14 + 8.34 21.79 1-2 UV 6.02 922.519 A 14 8.33 21.77 0-1

209.471 B] [8.36 67.55 2-1 2p

3 P°- 5s 3 S

823.273 A 2 8.36 23.42 2-2 2p

3 P°- 2p 2l D 209.407 B (400m;)* 8.34 67.55 1-1 UV 6.03 822.299 P 8.34 23.42 1-2 UV 3.01 209.378 bJ [8.33 67.55 0-1

594.895 P 8.34 29.18 1-0 2p

3 P°- 2p 2l S 206.028 B (500) 8.36 68.54 2-3 2p

3 P°- 3d 3 D

UV 3.02 205.968 B] [8.34 68.54 1-2 UV 6.04 205.940 B

(500m;) 8.33 68.54 0-1

322.722 B 9 8.36 46.78 2-1 2p

3 P°- 3s 3S

322.572 B 8 8.34 46.78 1-1 UV 4 198.821 B (300) 8.36 70.72 2-1 2p

3 P°- 6s 3 S

322.506 B 7 8.33 46.78 0-1 198.764 B

1

f * [8.34 70.72 1-1 UV 6.05 198.740 Bl

(ZjUm/ j 8.33 70.72 0-1

310.962 P 8.34 48.21 1-0 2p

3 P°- 3s «S UV 4.01 197.000 B (400) 8.36 71.29 2- 2p

3 P°- 6d

3 D

196.944 Bl [8.34 71.29 1- UV 6.06 283.583 B 12 8.36 52.08 2-3 2p

3 P°- 3 d3 D 196.921 B! (400u;)*

8.33 71.29 0-1

283.476 B 11 8.34 52.08 1-2 UV 5 283.419 B 10 8.33 52.08 0-1 193.214 B (350) 8.36 72.53 2-1 2p

3 P°- 7s 3 S

193.160 Bl [8.34 72.53 1-1 UV 6.07 276.439 P 8.36 53.21 2-2 2p

3P°— 3d >D 193.139 B

(300m;) * 8.33 72.53 0-1

276.329 P 8.34 53.21 1-2 UV 5.01 192.859 B 8.36 72.64 2-3 2p

3 P°— 4p' 3 D

241.857 P 8.36 59.62 2-1 2p

3P°— 3p' »P 192.908 B 8.36 72.63 2-2 UV 6.08 241.773 P 8.34 59.62 1-1 UV 5.02 192.888 B

(400m;)* 8.34 72.62 1-1

241.736 P 8.33 59.62 0-1 192.941 B 8.36 72.62 2-1

239.616 B (500m;) 8.36 60.10 2-3 2p

3 P°— 3p' 3 D 191.951 B (350) 8.36 72.95 2- 2p

3 P°- Id 3 D

239.632 B 8.34 60.08 1-2 UV 5.03 191.898 B1 [8.34 72.95 1- UV 6.09 239.659 B 8.33 60.07 0-1 191.868 B

(350m>) * [8.33 72.95 0-1

239.708 B (400u>)

: ‘ 8.36 60.08 2-2

239.679 B 8.34 60.07 1-1 191.702 Bl 8.36 73.03 2-2 2p

3 P°- 4p' 3 P

239.763 B 8.36 60.07 2-1 191.676 B 8.34 73.02 1-1 UV 6.10 191.727 B 8.36 73.02 2-1

237.991 B (500) 8.36 60.45 2-1 2p

3 P°- 4s 3 S 191.748 B

(400m-)* 8.34 ' 73.00 1-0

237.908 B

] [8.34 60.45 1-1 UV 5.04 *191.651 B 8.34 73.03 1-2

237.873 BJ (8.33 60.45 0-1 *191.651 B 8.33 73.02 0-1

•I B7 iv-2
Multiplet Table

N IV — Continued N IV -Continued

F P

Multiplet

E P

I A Ref lilt I A Ref Int J Multiplet J

No. Low High Low High No.

Vac Vac

2p 3 P°- 7p' 3 D 189.437 B (10) 8.36 73.81 2-1 2p

3 P°- 4p' 3 S 166.496 B (20) 8.36 82.82 2-3

189.386 B (5) 8.34 73.81 1-1 UV 6.11 166.540 B (75) 8.36 82.80 2-2 UV 6.28 189.365 B (1) 8.33 73.81 0-1

166.377 B (20) 8.36 82.88 2-2 2p

3 P°- 7p' 3 P

188.818 B (300) 8.36 74.02 2- 2p

3 P°- 8d

3 D 166.337 B (10) 8.34 82.88 1-2 UV 6.29

188.762 B1 (300m;) * 8.34 74.02 1- UV 6.12

2p

3 P°- 8p' 3 D

UV 6.30 188.743 B 8.33 74.02 0-1 164.048 B (50) 8.36 83.93 2-3

188.656 B (250) 8.36 74.08 2-1 2p

3 P°- 8s 3 S

163.972 B (2) 8.36 83.97 2-2 2p

3 P°- 8p' 3 P

188.606

188.583

B]

BJ

(200m;) *

1

[8.34 8.33

74.08

74.08

1-1 0-1

UV 6.13 UV 6.31

2p

3 P°- 9s 3 S

162.423 B (10) 8.36 84.69 2-3 2p

3 P°- 9p ' 3 D

187.194 B (20) 8.36 74.59 2-1 UV 6.32 187.142 B (10) 8.34 74.59 1-1 UV 6.14 187.123 B (10) 8.33 74.59 0-1

162.374 B (2) 8.36 84.71 2-2 2p

3 P°- 9p' 3 P

UV 6.33 186.759 B (300<7) 8.36 74.74 2- 2p

3 P°- 9d3 D

186.709 B1

(250(7) * 8.34 74.74 1- UV 6.15 161.286 B (2(7) 8.36 85.23 2-3 2p

3 P° — 10p' 3 D

186.690 B, [8.33 74.74 0-1 UV 6.34

185.623 B (5) 8.36 75.15 2-1 2p

3 P° — 10s 3 S 161.256 B (2(7) 8.36 85.24 2-2 2p

3 P°-10p' 3 P

185.568 B (3) 8.34 75.15 1-1 UV 6.16 UV 6.35

185.306 B (200(7) 8.36 75.26 2- 2p

3 P°— 10d3 D 160.451 B (Id) 8.36 85.63 2- 2p

3 P°-llp' 3 P

185.257 B]

(150(7) * [8.34 75.26 1- UV 6.17 UV 6.36 185.237 BJ [8.33 75.26 0-1

159.833 B (Id) 8.36 85.93 2- 2p

3 P°-12p' 3 P

184.485 B (2) 8.36 75.56 2-1 2p

3 P°-lls 3 S UV 6.37 184.437 B (1) 8.34 75.56 1-1 UV 6.18 159.366 B (Id) 8.36 86.15 2- 2p

3 P° — 13p' 3 P

184.247 B]

(75(7)

* [8.36 75.65 2- 2p

3 P° — 11(7 3 D UV 6.38 184.200 BJ [8.34 75.65 1- UV 6.19

183.450 BJ [8.36 75.94 2- 2p

3 P°— 12rf 3 D Air

/

183.402 B

(50(7)

* 18.34 75.94 1- UV 6.20 2219.61 P 16.20 21.79 1-2 2p 'P°- 2p23 P

2225.78 P 16.20 21.77 1-1 UV 6.39 182.827 B (30(7) 8.36 76.17 2- 2p

3 P° — 13(7 3 D 2229.38 P 16.20 21.76 1-0

182.779 P 8.34 76.17 1- UV 6.21 Vac

182.323 B (20(7) 8.36 76.36 2- 2p

3 P°— 14(7 3 D 1718.551 A 20 16.20 23.42 1-2 2p *P°- 2p2

1

D

182.275 P 8.34 76.36 1- UV 6.22 UV 7

181.943 B (10(7) 8.36 76.50 2- 2p

3 P°— 15(7 3 D 955.335 A 20 16.20 29.18 1-0 2p 'P°- 2p2, S

UV 8

181.895 8.34 76.50 1- UV 6.23

177.602 B ( lOOic) * 8.36 78.17 2-3 2p

3 P°- 5p' 3 D 405.530 P 16.20 46.78 1-1 2p *P°- 3s 3 S

UV 8.01 177.646 B (250) 8.36 78.15 2-2 UV 6.24 177.621 B (100w)* 8.34 78.14 1-1

2p

3 P°- 5p' 3 P

387.353 C 4 16.20 48.21 1-0 2p *P°— 3s *S UV 9 177.163 B (200) 8.36 78.34 2-2

177.142 B

(100(c) * 8.34 78.33 1-1 UV 6.25 345 595 P 16.20 52.08 1-2 2p «P°- 3(7 3 D

177.182 B 8.36 78.33 2-1

345.600 P 16.20 52.08 1-1 UV 9.01 177.119 B 8.34 78.34 1-2

170.463 B (50) 8.36 81.09 2-3 2p

3 P°- 6p' 3 D 335.052 B 11 16.20 53.21 1-2 2p «P°- 3(7 «D

170.505 B (100) 8.36 81.07 2-2 UV 6.26 UV 10

170.249 B (100) 8.36 81.18 2-2 2p

3 P°- 6p ' 3 P 285.561 B (600) 16.20 59.62 1-1 2p >P°- 3p' l P

170.208 B (50) 8.34 81.18 1-2 2p UV 6.27 UV 11

B7 iv-3
Multiplet Table

N iv — Continued N IV — Continued

I A Ref Int E PJ Multiplet No.

I A Ref Int E P

J

Multiplet No. Low High Low High

Vac Vac

282.565 P 16.20 60.08 1-2 2P ip°_ 3p

'3 D 209.842 B (150m;) 16.20 75.29 1-2 2P >P°-10</ >D

282.642 P 16.20 60.07 1-1 UV 11.01 UV 12.16

280.180 P 16.20 60.45 1-1 2P >P°- 4s 3 S 208.510 B (lOOd) 16.20 75.66 1-2 2p 'P°-ll<f >D UV 11.02 UV 12.17

274.946 P 16.20 61.30 1-2 2P ip°_ 3p'3p 207.500 B (20d) 16.20 75.95 1-2 2p

1 P°— 12c? >D

275.016 16.20 61.28 1-1 UV 11.03 UV 12.18 275.058 16.20 61.28 1-0

206.707 B (10d) 16.20 76.18 1-2 2p

1 P° — 13(7 'D

274.451 B (250) 16.20 61.38 1-0 2p >P°- 4s >S UV 12.19 UV 11.04 200.340 B (300) 16.20 78.09 1-1 2p >P°- 5p' 'P

272.219 P 16.20 61.75 1-1 2P >P°- 3p' 3 S UV 12.20 UV 11.05 191.228 B ( 100 ) 16.20 81.04 1-1 2p >P°- 6p'«P

270.994 B (650) 16.20 61.95 1-2 2p ‘P°- 3p' 5 D UV 12.21 UV 12 190.625 B ( 200 ) 16.20 81.24 1-2 2P ip°_ 6p

'i D

262.638 P 16.20 63.41 1-2 2p ip°_ 4d

3 D UV 12.22 262.642 P 16.20 63.41 1-1 UV 12.01 186.218 B (50) 16.20 82.78 1-2 2P ip°_ 7p' ip

260.447 B (600) 16.20 63.81 1-2 2P >P°- 4d >D UV 12.23 UV 12.02 185.853 B (75) 16.20 82.91 1-2 2p *P°- 7p'»D

259.824 B (450) 16.20 63.92 1-0 2P *P°- 3p' >S UV 12.24 UV 12.03 183.146 B (5 d) 16.20 83.90 1-1 2p ‘P°- 8p' >P

240.363 B ( 200 ) 16.20 67.78 1-0 2P >P°- 5s >S UV 12.25 UV 12.04 182.894 B ( 10 ) 16.20 83.99 1-2 2P >P°- 8p' >D

236.068 B (550) 16.20 68.72 1-2 2p P°- 5d 'D UV 12.26 UV 12.05 180.928 B (5) 16.20 84.73 1-2 2P >P°- 9

p' >D

227.026 B ( 100 ) 16.20 70.81 1-0 2P 'P°- 6s 'S UV 12.27 UV 12.06 179.554 B (2) 16.20 85.25 1-2 2P 'P°-10p' >D

224.629 B (450m;) 16.20 71.40 1-2 2P 'P°- 6d >D UV 12.28 UV 12.07 178.547 B ( 1 ) 16.20 85.64 1-2 2P

1 P°— 1 lp' >D

220.280 B (400) 16.20 72.49 1-1 2P >P°- 4p’ 1 P UV 12.29 UV 12.08

220.124 B (50) 16.20 72 53 1-0 2P ip°_ is is

UV 12.09

'

218.250 B (400) 16.20 73.01 1-2 2P •P°- Id >D 437.083 P 21.79 50.15 2-1 2p2 3P _ 3p 'P° UV 12.10 436.845 P 21.77 50.15 1-1 UV 12.30 436.706 P 21.76 50.15 0-1

217.218 B (500) 16.20 73.28 1-2 2P ip°_ 4p

'i D

UV 12.11 434.235 P 21.79 50.34 2-2 2p

2 3 P - 3p 3 P° 434.067 P 21.77 50.33 1-1 UV 12.31 215.755 B (75) 16.20 73.67 1-0 2P 'P°- 4p M S 434.302 P 21.79 50.33 2-1

UV 12.12 434.097 P 21.77 50.33 1-0

434.000 P 21.77 50.34 1-2

214.843 B ( 10 ) 16.20 73.91 1-0 2p »P°- 8s »S 433.930 P 21.76 50.33 0-1

UV 12.13 345.062 B) [21.79 57.72 2-2 2p

23 P - 3s' 3 P°

214.291 B (250) 16.20 74.06 1-2 2P >P°- 8d >D 345.111 B 21.77 57.70 1-1 UV 13 UV 12.14 345.261 B L 21.79 57.70 2-1

345.207 B 21.77 57.69 1-0

211.679 B (250J) 16.20 74.77 1-2 2p P°- 9d ‘D 344.916 B 21.77 57.72 1-2

UV 12.15 345.025 B (21.76 57.70 0-1

B7 iv-4
Multiplet Table

N IV — Continued N IV — Continued

E P E P

I A Ref Int J Multiplet I A Ref Int J Multiplet

Low High High No. Low No.

Vac Vac

336.365 P 21.79 58.65 2-1 2p

23 P - 3s' 'P° 217.895 B (500(f) 21.79 78.69 2- 2p23 P - 5(f' 3 P°

336.224 P 21.77 58.65 1-1 UV 13.01 217.836 P 21.77 78.69 1 - UV 15.06 336.141 P 21.76 58.65 0-1

210.028 B ( 200 ) 21.79 80.82 2-2 2p 2 3 P - 6s' 3 P°

310.003 P 21.79 61.78 2-2 2p23 P - 3d' 1 D° 210.056 P 21.77 80.79 1-1 UV 15.07 309.883 P 21.77 61.78 1-2 UV 13.02 210.111 B

1 [21.79 80.79 2-1

210.092 B ( 100m;)* 21.77 80.78 1-0

304.927 P 21.79 62.45 2-2 2p

2 3p _ 4p

3 p° 209.976 bJ [21.77 80.82 1-2

304.800 P 21.77 62.45 1-1 UV 13.03 210.024 P 21.76 80.79 0-1

304.916 P 21.79 62.45 2-1

304.793 P 21.77 62.45 1-0 208.150 B) [21.79 81.35 2-3 2p2 3P - 6(f' 3 D°

304.811 P 21.77 62.45 1-2 208.131 B (400m;)* 4 21.77 81.34 1-2 UV 15.08 304.733 P 21.76 62.45 0-1 208.113 Bj [21.76 81.34 0-1

303.124

303.048 B

C

21.79 21.77

62.69

62.68 2-3

1-2

2p23P - 3d' 3 D°

UV 14

208.185 208.144 P

P

21.79

21.77

81.34

81.34 2-2

1-1

303.006 B 1 (500m;)* 21.76 62.68 0-1 208.113 P 21.79 8 l .34 2-1

303.162 B 21.79 62.68 2-2

2p

23 P - 6(f' 3 P° 303.078 B 21.77 62.68 1-1 208.066 B (400(f) 21.79 81.37 2-

303.191 bJ .21.79 62.68 2-1 208.012 P 21.77 81.37 1 - UV 15.09

297.816 B (700) 21.79 63.42 2-2 2p23 P - 3d' 3 P° 203.694 B (50m;)* 21.79 82.65 2-2 2p 23 P - 7

s' 3 P°

297.657 B (21.77 63.42 1-1 UV 15 203.728 P 21.77 82.63 1-1 UV 15.10 297.770 B 21.79 63.42 2-1 203.780 B (50) 21.79 82.63 2-1

297.634 B (600m;)* 21.77 63.43 1-0 203.642 B (50m;)* 21.77 82.65 1-2

297.704 B 21.77 63.42 1-2

297.595 C 121.76 63.42 0-1 202.595 B (500m;) 21.79 82.98 2- 2p23P - Id' 3 D°

UV 15.11 248.461 B (500m;)* 21.79 71.69 2-2 2p

23P - 4s' 3 P°

248.484 B (500m;)* 21.77 71.67 1-1 UV 15.01 202.485 B (300tf) 21.79 83.02 2p 23 P - 7(f' 3 P°

248.563 B [21.79 71.67 2-1 UV 15.12 248.540 B (500)* 21.77 71.66 1-0

248.383 B, [21.77 71.69 1-2 199.857 B (50) 21.79 83.82 2-2 2p

23 P _ 8s' 3 P°

248.433 B (500m;)* 21.76 71.67 0-1 199.806 B ( 20 ) 21.77 83.82 1-2 UV 15.13

239.212 B

| 21.79 73.62 2-3 2p 2 3 P _ 4g(' 3 D° 199.159 B (450m;) 21.79 84.04 2- 2p23 P - 8(f' 3 D°

239.174

239.146 i

(450m)*

21.77 21.7673.61 73.61

L-2

0-1

UV 15.02 UV 15.14

239.243 B' 21.79 73.61 2-2 199.087 B (200d) 21.79 84.06 2- 2p

23 P - 8d' 3 P°

239.188 P 21.77 73.61 1-1 UV 15.15 239.259

238.802

P

B (600)

21.79 73.61 2-1

2p23p _ 4d' 3 P°

197.343 B ( 2 ) 21.79 84.61 2- 2p 23P - 9s' 3P°

21.79 73.71 2-2 UV 15.16 238.694 B) 21.77 73.71 1-1 UV 15.03 238 769 B 21 79 73 71 2-1

(500m;) 2p 23P - 9(f ' 3D°

UV 15.17 238.683

238.731 238.657

B

B

B

(500m;)’ 21.77 21.77

21.76

73.72

73.71 73.71

1-0

1-2

0-1

196.866

196.802

B

B

21.79 84.76 2-

( 100(f) 2p23P - 9(f' 3 21.79 84.79 2 P° -

221.789 B (450) 21.79 77.69 2-2 2p 23P - 5s' 3 P° UV 15.18 221.810 P 21.77 77.67 1-1 UV 15.04 221.871 B| 21.79 77.67 2-1 195.610 B ( 1 ) 21.79 85.17 2-2 2p 23P - 10s' 3P°

221.854 B (300m;)* < 21.77 77.66 1-0 UV 15.19 221.729 B 21.77 77.69 1-2

221.774 P 21.76 77.67 0-1 195.258 B ( 100(f) 21.79 85.28 2- 2p 2 3P -10(f' 3 D°

UV 15.20 218.088 B) '21.79 78.64 2-3 2p 23 P - 3d' 3 D°

218.067 bI (400m;)*

J 21.77 78.63 1-2 UV 15.05 195.202 B (20d) 21.79 85.30 2- 2p

2 3P - 10(f ' 3 P°

218.044 B 21.76 78.62 0-1 UV 15.21 218.116 B) 21.79 78.63 2-2

218.079 P 21.77 78.62 1-1 194.083 B (75(f) 21.79 85.67 2p23P -ll(f' 3D°

218.138 P 21.79 78.62 2-1 UV 15.22

421-375 OL - 71 - 3 B7 iv-5
Multiplet Table

N IV — Continued N IV — Continued

I A Ref Int E P

/ Multiplet I A Ref Int E P

J

Multiplet No.

J Low High No. Low High

Vac Vac

2

p

2 ‘D - 4d' *D° 192.533 B (10d) 21.79 86.18 2p 23P -13d' 3D° 250.121 B (300) 23.42 72.99 2-2

UV 15.23 UV 18.12

248.654 B (450) 23.42 73.28 2-3 2

p

2 >D - 4d' ’F° 463.740 B (650) 23.42 50.15 2-1 2p21D - 3p 'P° UV 18.13 UV 15.24 244.100 B (300m;) 23.42 74.21 2-1 2

p

2 >D - 4d' *P° 460.532 P 23.42 50.34 2-2 2

p

2 ‘D - 3p 3P° UV 18.14 460.607 P 23.42 50.33 2-1 UV 15.25 227.446 P 23.42 77.91 2-1 2p21 D - 55' l P°

361.462 P 23.42 57.72 2-2 2

p

2 'D — 3s' 3P° UV 18.15 361.679 P 23.42 57.70 2-1 UV 15.26 223.421 a P (500d) 23.42 78.91 2-1 2

p

2 *D - 5

d' ‘P

0

351.931 C (500m;) 23.42 58.65 2-1 2

p

2 'D — 35' , P° UV 18.16 UV 16 214.414 B (50d) 23.42 81.24 2-3 2

p

2 >D - 6

d' >F° 323.178 B (600m;) 23.42 61.78 2-2 2

p

2 >D - 3d' *D° UV 18.17 UV 17 213.443 a P (300d) 23.42 81.50 2-1 2

p

2 'D - 6

d' «P° 317.664 P 23.42 62.45 2-2 2

p

2 >D - 4p 3P° UV 18.19 317.653 P 23.42 62.45 2-1 UV 17.01

2

p

2 >D - 3d' 3D°

207.812 a P (200d) 23.42 83.08 2-1 2p2l D - 7

d' »P° 315.708 P 23.42 62.69 2-3 UV 18.20 315.751 P 23.42 62.68 2-2 UV 17.02 315.785 P 23.42 62.68 2-1 204.354 a B (150d) 23.42 84.10 2-1 2p2l D - 8d' *P° UV 18.21 315.060 B (600) 23.42 62.77 2-3 2

p

2 *D - 3d' >F° UV 18 201.988 B (lOOd) 23.42 84.80 2-1 2p21 D - 9

d' >P° UV 18.22 314.324 B (20) 23.42 62.86 2-1 tc 6 l o UV 18.01 200.316 P 23.42 85.31 2-1 2p21 D — 10d' »P° UV 18.23 309.956 P 23.42 63.42 2-2 2

p

2 *D - 3d' 3P°

309.907 P 23.42 63.42 2-1 UV 18.02

591.180 P 29.18 50.15 0-1 2p21 S - 3p >P° 305.177 P 23.42 64.04 2-3 2

p

2 'D - 4/ 3F° UV 18.24 305.185 P 23.42 64.04 2-2 UV 18.03 586.104 P 29.18 50.33 0-1 2p21 S - 3p 3 P°

303.280 B (500) 23.42 64.30 2-1 2

p

2 'D — 3d' *P° UV 18.25 UV 18.04 434.779 P 29.18 57.70 0-1 2p21 S - 35' 3 P°

300.318 B (650) 23.42 64.70 2-3 2

p

2 'D - 4/ l F° UV 18.26 UV 18.05 420.769 B (500) 29.18 58.65 0-1 2p21 S - 35' »P° 276.741 B (10) 23.42 68.22 2-1 2

p

2 >D - 5p *P° UV 18.27 UV 18.06 368.108 B (450) 29.18 62.86 0-1 2p21 S - 4p >P° 273.140 B (300) 23.42 68.81 2-3 2

p

2 >D - 5/ 'F° UV 18.29 UV 18.07 353.056 B (700) 29.18 64.30 0-1 2

p

2 »S - 3d' 'P° 260.519 P 23.42 71.01 2-1 2

p

2 'D - 6p >P° UV 18.30 UV 18.08 317.596 B (200) 29.18 68.22 0-1 2p21 S - 5p »P° 258.320 B (150) 23.42 71.41 2-3 2p 2 >D - 6/ 'F

0 UV 18.31 UV 18.09 296.418 P 29.18 71.01 0-1 2p 21 S - 6p »P° 255.148 B (380) 23.42 72.01 2-1 2

p

2 >D - 45' >P° UV 18.32 UV 18.10

250.566 P 23.42 72.90 2-1 2p 2 'D - 7p >P° a Observed members of this series are shifted to longer waves by 0.309.4 to 0.052 A (

= 5 to 8), wher UV 18.11 autoionization is effective.

B7 iv-6
Multiplet Table

N IV — Continued N IV — Continued

I A Ref Int E P

J

Multiplet No.

I A Ref Int E P

J

Multiplet

Low High Low High No.

Vac Air 289.479 B (300) 29.18 72.01 0-1 2p2

1

S - 4s' ‘P° 6380.77 A 8 48.21 50.15 0-1 35 S - 3p «P° UV 18.33 2

283.599 P 29.18 72.90 0-1 2p21 S - Ip >P° 5835.11 P 48.21 50.33 0-1 35 ! S - 3p 3 P° UV 18.34 2.01

275.354 B (450) 29.18 74.21 0-1 2p21 S - 4c?' >P° Vac

UV 18.35 1306.909 P 48.21 57.70 0-1 35 >S - 3s' 3 P°

UV 18.48 254.338 B (100) 29.18 77.91 0-1 2

p

2 *S - 5s' >P° UV 18.36 1188.006 A 6 48.21 58.65 0-1 3s •S - 3s' *P° UV 18.49 249.316 B (300c?) 29.18 78.91 0-1 2

p

2 »S - 5d' >P° UV 18.37 846.215 P 48.21 62.86 0-1 35 >S - 4p >P° UV 18.50 236.954 B (150c?) 29.18 81.50 0-1 2p2

1

S - 6cf >P° UV 18.38 770.678 P 48.21 64.30 0-1 35 >S - 3d' >P° UV 18.51 230.035 B (lOOd) 29.18 83.08 0-1 2p2 ‘S - Id' «P° UV 18.39 619.663 P 48.21 68.22 0-1 3s *S - 5p >P° UV 18.52 225.741 B (50d) 29.18 84.10 0-1 2p21 S - M' >P° UV 18.40 520.934 P 48.21 72.01 0-1 3s >S - 4s' >P° UV 18.53 222.893 B (30c?) 29.18 84.80 0-1 2

p

2 >S - 9d' ‘P° UV 18.41 476.909 P 48.21 74.21 0-1 3s S - 4c?' >P° UV 18.54 220.885 B (2d) 29.18 85.31 0-1 2

p

2 «S -10d' >P° UV 18.42

Air Air 6438.53 P 50.15 52.08 1-2 3P ‘P°- 3d

3 D

3670.35 P 46.78 50.15 1-1 3s 3 S - 3p >P° 6440.11 P 50.15 52.08 1-1 2.02

0.01 4057.759 A 8 50.15 53.21 1-2 3P >P°- 3c? ] D

3478.71 A 15 46.78 50.34 1-2 3s 3 S - 3p 3 P° 3 3482.99 A 14 46.78 50.33 1-1 1 V ac 3484.96 A 13 46.78 50.33 1-0 1309.557 A 4 50.15 59.62 1-1 3P >P°- 3p' 'P UV 18.55 Vac

1133.117 A 4 46.78 57.72 1-2 3s 3 S - 3s' 3 P° 1248.868 P 50.15 60/08 1-2 3P ip°_ 3p' 3 D

1135.244 A 3 46.78 57.70 1-1 UV 18.43 1250.378 P 50. 15 60.07 1-1 UV 18.56

1136.241 A 2 46.78 57.69 1-0

1203.587 P 50.15 60.45 1-1 3p •P°- 4s 3 S

791.045 P 46.78 62.45 1-2 3s 3 S - 4p

3 P° UV 18.57

791.095 P 46.78 62.45 1-1 UV 18.44 791 167 P 46 78 62 45 1-0 1112.600 P 50. 15 61.30 1-2 3p ‘P°- 3

p' 3 P

1113.749 P 50.15 61.28 1-1 UV 18.58 1114.446 P 50.15 61.28 1-0

745.020 P 46.78 63.42 1-2 3s 3 S - 3c?' 3 P°

744.737 P 46.78 63.42 1-1 UV 18.45 1104.542 P 50.15 61.38 1-0 3P «P°- 4s »S 744.566 P 46.78 63.43 1-0 UV 18.59

497.696 P 46.78 71.69 1-2 3s 3 S - 4s' 3 P° 1069.255 P 50.15 61.75 1-1 3P «P°- 3p' 3 S

498.106 P 46.78 71.67 1-1 UV 18.46 UV 18.60 498.323 P 46.78 71.66 1-0

1050.602 P 50.15 61.95 1-2 3p «P°- 3

p' 'D

460.394 P 46.78 73.71 1-2 3s 3 S - 4(/' 3 P° UV 18.61 460.272 P 46.78 73.71 1-1 UV 18.47 460.217 P 46.78 73.72 1-0 908.057 P 50.15 63.81 1-2 3p «P°- 4d 'D UV 18.62

B7 iv7
Multiplet Table

N IV — Continued N IV — Continued

I A Ref Int E P

J

Multiplet No.

I A Ref Int E P J Multiplet

Low High Low No. High

Vac Vac

900.516 P 50.15 63.92 1-0 3p

! P°- 3p' »S 948.540 A 5 50.34 63.41 2-3 ip 3 P°- 4d 3 D

UV 18.63 948.244 A 4 50.33 63.41 1-2 UV 18.79 948.155 A 2 50.33 63.41 0-1

703.191 P 50.15 67.78 1-0 ip 'P°- 5s *S UV 18.64 720.510 P 50.34 67.55 2-1 ip 3 P°- 5s 3 S

667.653 P 50.15 68.72 1-2 ip 'P° — 5d *D 720.327 P 50.33 67.55 1-1 UV 18.80 UV 18.65 720.244 P 50.33 67.55 0-1

600.061 P 50.15 70.81 1-0 3p ‘P°- 6s 'S UV 18.66 1323.98 A 2 52.08 61.44 3-4 id 3 D - id’ 3 P

583.601 P 50.15 71.40 1-2 ip 'P°- 6d 'D 1325.685 A 1 52.08 61.43 2-3 UV 18.81 UV 18.67 1326.964 A 0 52.08 61.42 1-2

555.126 P 50.15 72.49 1-1 ip >P°- 4p' >P 1195.852 P 52.08 62.45 3-2 id 3 D - 4p 3 P° UV 18.68 1195.567 P 52.08 62.45 2-1 UV 18.82 1195.400 P 52.08 62.45 1-0

554.137 P 50.15 72.53 1-0 ip >P°- 7s >S UV 18.69 1168.599 A 3 52.08 62.69 3-3 id 3 D - id' 3 D°

1169.063 A 2 52.08 62.68 2-2 UV 18.83 542.412 P 50.15 73.01 1-2 ip 1 P°- Id 'D 1169.478 A 1 52.08 62.68 1-1 UV 18.70 1036.16 A 8w 52.08 64.05 id 3 D - 4/ 3 P

536.082 P 50.15 73.28 1-2 ip >P°- 4p' 'D UV 18.84 UV 18.71 1446.114 A 5 53.21 61.78 2-2 id >D - id' >D° 527.259 P 50.15 73.67 1-0 ip >P°- 4p' >S UV 18.85 UV 18.72 1296.600 A 5 53.21 62.77 2-3 id >D - id' »P

521.845 P 50.15 73.91 1-0 ip »P

0 - 8s >S UV 18.86 UV 18.73 1284.218 A 3 53.21 62.86 2-1 id 'D - 4p >P° 518.600 P 50.15 74.06 1-2 ip «P°- 8d *D UV 18.87 UV 18.74 1078.708 A 6 53.21 64.70 2-3 id >D - 4/ 'P

Air UV 18.88 7122.98 A 5 50.34 52.08 2-3 ip 3 P°- id 3 D

7109.40 A 3 50.33 52.08 1-2 4

Air 7103.28 A 2 50.33 52.08 0-1 5204.29 A 5 57.72 60.10 2-3 3s' 3 P°- ip' 3 D

7127.27 A 1 50.34 52.08 2-2 5200.40 A 4 57.70 60.08 1-2 5 7111.30 A 1 50.33 52.08 1-1 5205.15 A 3 57.69 60.07 0-1

7129.18 P 50.34 52.08 2-1 5245.61 A 3 57.72 60.08 2-2

5226.69 A 3 57.70 60.07 1-1 Vac 5272.35 P 57.72 60.07 2-1

1270.280 A 5 50.34 60.10 2-3 ip 3 P°- ip’ 3 D

1272.160 A 4 50.33 60.08 1-2 UV 18.75 3463.37 A 6 57.72 61.30 2-2 3s' 3 P°- 3p' 3 P

1273.47 A 3 50.33 60.07 0-1 3454.70 A 2 57.70 61.28 1-1 7 1272.74 A 2 50.34 60.08 2-2 3474.55 A 3 57.72 61.28 2-1

1273.716 A 2 50.33 60.07 1-1 3461.36 A 2 57.70 61.28 1-0

1274.285 P 50.34 60.07 2-1 3443.59 A 3 57.70 61.30 1-2

3445.20 A 2 57.69 61.28 0-1

1225.719 A 4 50.34 60.45 2-1 ip 3 P°- 4s 3 S

1225.192 A 3 50.33 60.45 1-1 UV 18.76 3075.19 P 57.72 61.75 2-1 3s' 3 P° — 3p ' 3 S

1224.960 A 1 50.33 60.45 0-1 3059.60 P 57.70 61.75 1-1 7.01 3052.20 P 57.69 61.75 0-1 1131.488 P 50.34 61.30 2-2 ip 3 P°- ip' 3 P

1132.225 P 50.33 61.28 1-1 UV 18.77

1086.691 A 2 50.34 61.75 2-1 ip 3 P°- ip' 3 S

1086.269 A 1 50.33 61.75 1-1 UV 18.78 12727.43 P 58.65 59.62 1-1 3s' 1 P° — 3p' «P ml086. 084 P Ni 50.33 61.75 0-1 7.02

B7 iv-8
Multiplet Table

N IV —Continued N IV — Continued

I A Ref Int E P

J Multiplet No.

I A Ref Int E P

J Multiplet No. Low High Low High

Air Vac

4538.32 P 58.65 61.38 1-0 3s' 'P°-4s ‘S 1702.006 A 5 61.44 68.73 4- 3rf' 3 P-5g 3 G

7.03 1699.03 A 4 61.43 68.73 3- UV 18.91 1696.86 A 3 61.42 68.73 2-

3747.54 A 6 58.65 61.95 1-2 3s' 1 P° — 3p ' 1 D

8 1246.51 A 2 61.44 71.39 4- 3d'*¥°-6g 3 G

1244.92 A 1 61.43 71.39 3- UV 18.92 2402.05 A 5 58.65 63.81 1-2 3s' >P°—

4

d *D ml243.73 P Nv 61.42 71.39 2-

UV 18.89

Air 6119.23 P 61.78 63.81 2-2 3d' ’D°— 4<f 1 D

5736.94 A 4 59.62 61.78 1-2 3p' ‘P —3d' ‘D°

9

16

3823.95 A 0 59.62 62.86 1-1 3p' >P —4p 'P° 5288.25 P 61.95 64.30 2-1 3

p' 1 D —3d' >P°

10 17

2649.88 P 59.62 64.30 1-1 3p' i P-3d' »P° UV 18.90

12870.47 P 62.45 63.41 2-3 4p 3 P° — 4t/ 3 D

9222.99 P 60.10 61.44 3-4 3p' 3 D —3d' 3 F° 12892.88 P 62.45 63.41 1-2 18 9182.16 P 60.08 61.43 2-3 10.01 12916.03 P 62.45 63.41 0-1

9165.07 P 60.07 61.42 1-2 9311.55 P 60 10 61 43 3-3

9247.04 P 60 08 61 42 2-2

2430.41 A 3 62.45 67.55 2-1 4p 3 P° — 5s 3 S

Q37« 9Q P ah i n ^1 /lO o 9 2431.07 A 2 62.45 67.55 1-1 UV 18.93

OU. 1U Ol o Z 2431.55 A 0 62.45 67.55 0-1

4786.92 P 60.10 62 69 3-3 3p' 3 D —3d' 3 D°

4762.09 P 60.08 62 68 2-2 1

1

2035.5 1 A 5 62.45 68.54 2-3 4p 3 P° — 5d 3 D

4747.96 P 60.07 62.68 1-1 2036.10 A 4 62.45 68.54 1-2 UV 18.94 4796.66 P 60.10 62.68 3-2 2036.42 A 1 62.45 68.54 0-1

4769.86 P 60.08 62.68 2-1 4752.49 P 60.08 62.69 2-3

4740.26 P 60.07 62.68 1-2 2080.34 A 6 62.77 68.73 3-4 3d' i F°—5g >G

3735.43 P 60.10 63.42 3-2 3p' 3 D —3d' 3 P° UV 18.95 3707.39 P 60.08 63.42 2-1 12 3689.94 P 60.07 63.43 1-0 Vac

3714.43 P 60.08 63.42 2-2 1438.37 A 3 62.77 71.39 3-4 3d' 1 F°-6g ‘G

3694.14 P 60.07 63.42 1-1 UV 18.96 3701.13 P 60.07 63.42 1-2

Air 2318.09 A 6 w 63.41 68.76 4d

3 D -5/ 3 F°

3141.16 A 3P 60.10 64.05 3-4 3p' 3D — 4/ 3F° UV 18.97 3127.41 A 2P 60.08 64.04 2-3 12.01 3118.79 A lp 60.07 64.04 1-2

2421.65 A 3 63.42 68.54 2-3 3d' 3 P° —3d 3 D

2424.73 A 2 63.42 68.54 1-2 UV 18.98 2426.54 A 1 63.43 68.54 0-1

6219.89 A 4 60.45 62.45 1-2 4s 3 S _4

p

3 p°

6215.43 A 3 60.45 62.45 1-1 12.02 6212.41 A 1 60.45 62.45 1-0

2809.35 A 2 63.81 68.22 2-1 4d 'D —5p ‘P° UV 18.99

5843.84 P 61.30 63.42 2-2 3

p' 3 P -3d' 3 P° 2477.69 A 8 63.81 68.81 2-3 4d 'D -5/ >F° 5795.09 P 61.28 63.42 1-1 15 UV 18.991 5826.43 P 61.30 63.42 2-1

5784.76 P 61.28 63.43 1-0

5812.31 P 61.28 63.42 1-2

5776.31 P 61.28 63.42 0-1 2646.956 A 12 64.05 68.73 4- 4/ 3 F°— 5^ 3 G

2646.176 A 11 64.04 68.73 3- UV 19 2645.654 A 10 64.04 68.73 2-

B7 iv-9
Multiplet Table

N IV- Continued N IV-Continued

I A Ref Int E P

J

Multiplet No.

I A Ref Int E P

J Multiplet

Low High Low High No.

Vac Air

1688.11 A 3 64.05 71.39 4- 4/ 3F°— 6g 3 G 2884.77 A 4w 68.73 73.02 5g

3 G —Ih 3 H°

1687.82 A 2 64.04 71.39 3- UV 20 UV 21 1687.60 A 1 64.04 71.39 2-

4707.31 A 4h 68 76 71 39 5 f

3 F°— 6^ 3 G

21

Air 3078.25 A 6 64.70 68.73 3-4 4/ 'F°-5£ 'G

19 7582.40 A 2wl 71.39 73.02 6g

3 G -Ih 3 H°

22

4606.33 A 6 68.73 71.42 5g

3 G -6h3 H° 7702.96 A 4m;s 71.42 73.03 6h

3 H°— 7i 3

I 20 23

B7 iv- 10
NSRDS-NBS 3, SECTION 4

NITROGEN, Z = 7

A N V Atomic Energy Levels

B Nv Multiplet Table
. .

-

.
Atomic Energy Levels

Part A NITROGEN

Nv

Li I sequence; 3 electrons Z = 7

Ground state Is2 2s

2 Soi/2

2s 2Soi/2 789537.2 ± 3.0 cm-1

, 126.656 A (Vac) I P 97.888 eV

The analysis is from Hallin, who has observed the spectrum in the range 200 A to 8000 A with a

theta pinch discharge as source. On the basis of these new measurements he has calculated unperturbed energy levels for the entire term system. The limit quoted above is determined from extended

Ritz formulae for levels with l — 0 and 1 and from the polarization formula for those, with / 2* 2. Tilford has observed the spectrum from 128 A to 266 A with a low-pressure, high-voltage con- densed capillary discharge as source, and extended the observed n5-series to n= 10, the np-series

to n = 17 and the nd- series to n — 18. From a Ritz-Rydberg formula he derives the limit 789516 ±24

cm-1 as compared with 789534.4 cm-1 calculated by Hallin from the 2 S series by an extended Ritz

formula.

In the table the energy levels obtained from the observations are quoted from Hallin, supplemented by his calculated unperturbed values for the series to n — 10. All calculated values are entered in brackets.

Tilford is quoted for the nd 2 D terms (n — 9, 10) and for all otherns, np, nd terms having n > 10. Hallin notes that in the region 140 A to 250 A the difference between his calculated wavelengths and

the measurements by Tilford ranges from +0.002 A to —0.006 A, which introduces appreciable

differences in the level values. It has been suggested by Edlen that the large and almost constant

intervals observed experimentally by Tilford in the nd 2 D terms, amounting to about 21 ±9 cm 1

, may result from some sort of Stark Effect. The predicted intervals are small for these terms.

REFERENCES

S. G. Tilford, J. Opt. Soc. Am. 53, No. 9, 1051-1054 (1963). I P, T, C L

R. Hallin, Ark. Fys. (Stockholm) 31, No. 36, 511-526 (1966). I P, T, C L, G D, Stark Effect

Nv N v

Config. Desig. J Level Interval Config. Desig. J Level Interval

2s 2s 2 S Of 0.0 4p 4p 2 P° Oh 615141.0

32.8

If 615173.8

2P 2p 2 P° of 0463.2

258.7 n 80721.9 4d 4d 2 D If2f

617916.3 617925.5

9.2

3s 3s 2 S oh 456126.6

3P 3p 2 P° Oh

Ih

477765.7

477842.0

76.3 4/ 4/ 2F° 2f3f

618059.3

618064.1

[4.8]

3d 3g? 2 D If 484404.3

22.0

55 5s 2 S Of 673886.2

2h 484426.3

5P 5p 2 P° Of 678300.4

16.1 4s 4s 2 S Oh 606348.8 If 678316.5

421-375 OL - 71 - 4
Atomic Energy Levels

Nv -Continued N y -Continued

Config. Desig. J Level Interval Config. Desig. J Level Interval

5d 5c/ 2 D n [679712.7]

[4.9] 9s 9s 2S 0i [754677.0]

2i 679717.6

9P 9p 2 P° Oi [ 755411.5

[2.8] 5/ 5/ 2 F° 2i, 3i 679790.4 li [755414.3]

5g 5^ 2 G 3i, 41 679802.3 9d 9d 2 D li 755608

25

2i 755633

6s 6s 2 S Oi 709939.2 9/ 9/ 2 F° 2i, 3i [755666.5]

6P 6p 2 P° Oi 712463.2

9.4 3i,4i [755667.9] li 712472.6 9g 9g 2 G

6d 6c/ 2 D li 713279.3

2.2 9h 9h 2 H° 4i, 5i [755668.4]

2i 713281.5

9i 9i

2 I Si, 6i [755668.6]

6/ 6/ 2 F° 21 3i 713324.7 9k 9k 2 K° 6i, li [755668.7]

6g 6g 2 G 3i,4i 713328.9 91 91 2 L li, 8* [755668.8]

6h 6A 2 H° 4i, 5i 713334.8 10s 10s 2S 0i [761382.7]

Is 7s 2 S Oi 731425.4 10p 10p 2 P° Oi [761916.3]

[2.0] li [761918.3]

Ip 7p 2 P° Oi {733003.3]

[5.9] 10c/ 10c/ 2 D li 762048

li 23 [ 733009.2

2i 762071

Id 7c/ 2 D li2i

[733515.4]

[733517.2]

[1.8] 10/ 10/ 2 F° 2i, 3i [762102.1]

10g 10g 2 G 3i,4i [762103.1]

7/ 7/ 2 F° 2i, 3i 733542.7

10h 10h 2 H° 4i, 5i [762/03.5]

7g 7g 2 G 3i 4i [733549.0]

10i 10/ 2 1 5i, 6i [762103.6]

Ih Ih 2 H° 4i, Si [ 733549.9

10k 10A: 2 K° 6i, 7i [762103.7]

7 / 7i 2 I 5h 6| [733550.4]

10/ 10/ 2 L li, 8i [762103.8]

8s 8s 2S Oi [745255.6] Up llp 2 P° 0i. li 766687

8p 8p 2 P° 0i [ 746306.0 ] [3.9] 11c/ 1 1 c/

2 D li,2i 766866

8c/ 8c/ 2 D

li

li

[ 746309.9

[746648.5]

12p 12p 2 P° Oi, li 770347

[1.2] 2i [746649.7] 12c/ 12c/ 2 D li, 2i 770483

8/ 8/ 2 F° 2i, 3i [746669.2] 13p 13p 2 P° Oi, li 773174

8g 8p -G 3i,4i [746671.3] 13c/ 13c/ 2 D li, 2i 773282

8h 8h

2 H° 4i, 5i [ 746671.9

14p 14p 2 P° Oi, li 775465

8i 8i 2 I Si, 6i [746672.2] 14c/ 14c/ 2 D li,2i 775581

8/i 8k 2 K° 6i, li [ 746672.4

15p 15p 2 P° Oi, li 777230

A7 v-2
Atomic Energy Levels

Nv —Continued Nv —Continued

Config. Desig. J Level Interval Config. Desig. J Level Interval

15d 15d 2 D lL 777490 \ld 17eT2 D n, 2* 780117

16p 16p 2 P° Oz, 1£ 778634 18d 18d 2 D H, 2i 781067

16d 16rf 2 D It, 2\ 778847

lip 17p 2 P° o*, H 779855 Nvi (>S 0 ) Limit 789537.2:1 3.0

July 1970.

A7 v-3
'
Multiplet Table

Part B NITROGEN

Nv (Z = 7)

I P 91.888eV Limit 789537.2 ± 3.0 126.656 A (Yac)

Anal A List A July 1970

REFERENCES

A R. Hallin, Ark. Fys. (Stockholm) 31 , No. 36, 511-526 (1966). I P, T, C L, G D, I; W L 140 A to 7618 A

B S. G. Tilford, J. Opt. Soc. Am. 53 , No. 9, 1051-1054 (1963). I P, T, C L, (I); W L 128 A to 1242 A. (Note that intensities from Reference B are entered in parentheses).

P Predicted wavelengths from Ref A, Table 4 and from calculated unperturbed energy levels in Ref A, Table 5. New Multiplet Numbers, not inserted between older ones, start with UV 7 and 13.

*Blend

* and § Blend of N V and N IV

N v N v

I A Ref Int E p

J Multiplet No. 1

I A Ref Int E p

J Multiplet

Low High Low High No.

Vac Vac

1238.8214 A 20 0.00 10.01 0f-l£ 2s

2 S - 2p 2 P° 131.254 B (5) 0.00 94.46 of- 2s 2 S - 10p

2 P°

1242.804 A 19 0.00 9.98 0i—Oi UV 1 UV 3.06

209.274 P (80) 0.00 59.24 0£-li 2s 2 S - 3p 2 P° 130.431 B (4) 0.00 95.05 Of- 2s

2 S -llp 2 P°

209.308 P (80) 0.00 59.23 Of-01 UV 2 UV 3.07

162.556 P (48) 0.00 76.27 of-U 2s 2 S - 4p 2 P° 129.811 B (3) 0.00 95.51 Or- 2s 2 S — 12p 2 P°

162.564 P 0.00 76.27 O5—

O

2 UV 3 UV 3.08

147.424 P (24) 0.00 84.10 O5-H 2s 2 S - 5p 2 P° 129.337 B ( 2 ) 0.00 95.86 of

2s 2 S — 13p 2 P°

147.427 P 0.00 84.10 Of-o| UV 3.01 UV 3.09

140.356 P (16) 0.00 88.33 0PH 2s 2 S - 6p

2 P° 128.954 B ( 1 ) 0.00 96.14 of- 2s 2 S — 14p 2 P°

140.358 P 0.00 88.33 oj-oi UV 3.02 UV 3.10

136.429 B ( 8 ) 0.00 90.88 O2— 2s 2 S - 7p 2 P° 128.662 B ( 1 ) 0.00 96.36 0b- 2s 2 S — 15p 2 P° UV 3.03 UV 3.11

133.994 B (7) 0.00 92.53 Or- 2s

2 S - 8p

2 P° 128.430 B ( 0 ) 0.00 96.54 0b- 2s 2 S — 16p 2 P°

UV 3.04 UV 3.12

132.383 B ( 6 ) 0.00 93.66 O5— 2s 2 S - 9p 2 P° 128.229 B ( 0 ) 0.00 96.69 Ob- 2s 2 S — 17p 2 P° UV 3.05 UV 3.13

B7v-1
Multiplet Table

Nv -Continued N v -Continued

I A Ref Int E P

J Multiplet No. Ref Int E P

J Multiplet

Low High Low High No.

Vac Vac

266.379 A (84) 10.01 56.55 14-04 2p

2 P°— 35 2 S 143.241 B (1) 10.01 96.56 1*— 2p 2 P°—16(7 2 D

266.196 A (80) 9.98 56.55 04—04 UV 4 UV 24

247.706 A (100) 10.01 60.06 14~ 24 2p

2 P°— 3d 2 D 142.981 B (0) 10.01 96.72 1 4~ 2p 2 P°—17(7 2 D

247.561 A (85) 9.98 60.06 04- 14 UV 5 UV 25

190.249 P (32) 10.01 75.18 H-04 2p

2 P°— 4s 2 S 142.797 B (0) 10.01 96.84 lb- 2p 2 P°—18(7 2 D

190.155 P (20) 9.98 75.18 04—04 UV 5.01 UV 26

186.149 P (62) 10.01 76.61 14~24 2p

2 P°— 4d

2 D

186.063 P (52) 9.98 76.61 Oj- l4 UV 6

168.587 P (12) 10.01 83.55 14—04 2p

2 P°— 55 2 S Air

168.514 P (5) 9.98 83.55 04—04 UV 7 4603.73 A 12 56.55 59.24 04-14 3s 2 S — 3p 2 P°

4619.98 A 10 56.55 59.23 04-04 1 166.946 P (52) 10.01 84.27 14~24 2p

2 P°— 5d

2 D

166.875 P (44) 9.98 84.27 04-14 UV 8 Vac

628.744 A 5 56.55 76.27 04— 14 3s 2 S — 4p

2 P°

158.928 P (7) 10.01 88.02 14-04 2p

2 P°— 65 2 S 628.874 A 3 56.55 76.27 04~04 UV 27

158.862 P (4) 9.98 88.02 01-01 UV 9

450.072 P 3* 56.55 84.10 04~l4 3s 2 S — 5p 2 P°

158.088 P (36) 10.01 88.43 14“24 2p

2 P°— 6d

2 D 450.105 P 3* 56.55 84.10 04—04 UV 28

158.024 P (24) 9.98 88.43 04-14 UV 10 390.102 P 56.55 88.33 O5— lz 3s 2 S — 6p 2 P°

153.683 B (6) 10.01 90.68 U

-o* 2p 2 P°— 75 2 S 390.116 P 56.55 88.33 04—04 UV 29

153.624 B (3) 9.98 90.68 04—04 UV 11

153.192 B (28) 10.01 90.94 14~24 2p

2 P°— Id 2 D

153.136 B (18) 9.98 90.94 oj-14 UV 12 Air

150.488 B (5) 10.01 92.40 14-0* 2p

2 P°— 85 2 S 15185.80 P 59.24 60.06 1*—2* 3p

2 P°— 3d 2 D

150.429 B (2) 9.98 92.40 04-04 UV 13 15061.34 P 59.23 60.06 Oz-lz 1.01

150.171 B (14) 10.01 92.57 14—24 2p

2 P°— M 2 D Vac

150.116 B (7) 9.98 92.57 04-14 UV 14 778.172 A 2 59.24 75.18 lz“Oz 3p

2 P°— 4s 2S

777.712 A 1 59.23 75.18 0*—0* UV 30

148.387 B (4) 10.01 93.57 14-04 2p

2 P°— 95 2 S

148.328 B (1) 9.98 93.57 04—04 UV 15 713.860 A 8 59.24 76.61 l*-2* 3p

2 P°— 4(7 2 D

713.518 A 6 59.23 76.61 0z~ 14 UV 31

148.168 B (7) 10.01 93.68 14-24 2p

2 P°— 9d

2 D

148.116 B (4) 9.98 93.68 04—14 UV 16 510.096 P 59.24 83.55 14-04 3p

2 P°— 5s 2 S

509.896 P 59.23 83.55 Oz—Oz UV 32

146.921 B (3) 10.01 94.40 14-04 2p 2 P°—IO5

2 S

UV 17 495.356 P 59.24 84.27 14-24 3p

2 P°— 5d2 D

495.180 P 59.23 84.27 04-14 UV 33

146.767 B (6) 10.01 94.48 14-24 2p

2 P°—lOrf 2 D

146.716 B (3) 9.98 94.48 04-14 UV 18 430.857 P 59.24 88.02 14-04 3p

2 P°— 6s 2 S

430.714 P 59.23 88.02 04-04 UV 34

145.742 B (5) 10.01 95.08 14- 2p 2 P°—lle( 2 D

UV in 424.75 A 2 59.24 88.43 14—24 3p

2 P°— 6d2 D

U V IV 424.61 A 1 59.23 88.43 04-14 UV 35

144.978 B (4) 10.01 95.53 14- 2p 2 P°

l2d 2 D

I TV 90 394.348 P 59.24 90.68 14-04 3p

2 P°— 7s 2 S

394.228 P 59.23 90.68 04-04 UV 36

144.392 B (3) 10.01 95.87 14- 2p 2 P°—13(7 2 D

TIV 91 391.123 P 59.24 90.94 14—24 3p 2 P°— Id 2 D

391.008 P 59.23 90.94 04-14 UV 37

143.914 B (2) 10.01 96.16 14- 2p 2 P°—14(7 2 D

UV 22

143.520 B (1) 10.01 °6.39 14- 2p 2 P°—15(7 2 D 764.840 P 60.06 76.27 24-14 3<f 2 D — 4p 2 P° UV 23 764.896 P 60.06 76 27 14— 04 UV 38

B7 v-2
Multiplet Table

NV -Continued Nv -Continued

I A Ref Int E P

J Multiplet No.

I A Ref Int E P

J

Multiplet

Low High Low High No.

Vac Air 748.291 A 9 60.06 76.63 2p3i 3(7 2 D — 4/ 2P 2590.81 A 2 83.55 88.33 OPH 5s 2 S — 6p

2 P°

748.195 A 8 60.06 76.63 lp2£ UV 39 2591.44 A 1 83.55 88.33 opo* UV 55

515.757 P 60.06 84.10 2PH 3(7 2 D — 5p

2 P°

515.741 P 60.06 84.10 lp0£ UV 40

511.834 A 5 0O.O6 84.28 3(7 2 D — 5/ 2F° 3161.38 A 3 84.10 88.02 1 PO5 5p

2 P°— 6s2 S

UV 41 3159.75 A 2 84.10 88.02 opo£ 2

436.85 A 4 60.06 88.44 3(7 2 D — 6/

2F° 2859.16 A 57 84.10 88.43 lp2* 5p

2 P°— 6(7 2 D

UV 42 2858.03 A 4 84.10 88.43 oPH UV 56

Vac

1882.92 A 1 84.10 90.68 lpO£ 5p

2 P°— 7s 2 S

Air 1882.36 A 0 84.10 90.68 opoi UV 57

11327.57 P 75.18 76.27 Or- H 4s 2 S — 4p 2 P°

11368.92 P 75.18 76.27 0p0j 1.02 1811.62 A 17 84.10 90.94 lp2s 5p

2 P°— 7(7 2 D

1811.08 A 07 84.10 90.94 opH UV 58

Vac

1389.514 A 3 75.18 84.10 4s 2 S — 5p

2 P°

1389.822 A 2 75.18 84.10 Op0£ UV 43

Air 942.278 P 75.18 88.33 0PH 4s 2 S — 6p

2 P° 2974.52 A 6P 84.27 88.44 5(7 2 D— 6/

2F°

942.361 P 75.18 88.33 OpO5 UV 44 UV 59

Vac

1857.88 A 37 84.27 90.95 2p 5(7 2 D— 7/

2F° 1703.218 A 4 76.27 83.55 lpOz 4p 2 P°— 5s 2 S 1857.69 A 37 84.27 90.95 lp2i UV 60

*1702.25§ A 3* 76.27 83.55 OpOJ UV 45

1549.336 A 6 76.27 84.27 lp2£ 4p 2 P°— 5(7 2 D

1548.647 P 76.27 84.27 04—li UV 46 Air 2980.78 A 8wl 84.28 88.44 5/ 2 P— 6^ 2 G

1055.229 P 76.27 88.02 IPO* 4p 2 P°— 6s 2 S UV 61 1054.871 P 76.27 88.02 0P0£ UV 47 Vac

1019.278 P 76.27 88.43 lp2i 4p 2 P°— 6(7 2 D 1860.37 A 6w 84.28 90.95 5/ 2p lg 2Q

1018.973 P 76.27 88.43 OpH UV 48 etc. UV 62 etc.

1495.5 A 2w 84.28 92.57 5/

2 F° — 8g2 Q

etc. UV 63 etc. 1655.879 P 2* 76.61 84.10 2PH 4(7 2 D — 5p 2 P°

1656.065 P 2* 76.61 84.10 14—oi UV 49

1616.328 A 9wl 76.61 84.28 4<7 2 D — 5/ 2 F° Air UV 50 2981.31 A lOic/ 84.28 88.44 5g

2 G — 671 2 H°

1 UV 64

1048.20 A 2w 76.61 88.44 4(7 2 D — 6/ 2 F° UV 51 Vac

1860.37 A 6w 84.28 90.95 5g

2 G — 7h 2 H°

etc. UV 65 etc.

1621.966 A 1 76.63 84.27 4/ 2 F°— 5(7 2 D 1495.5 A 2w 84.28 92.57 5g

2 G — 8h2 H°

UV 52 etc. UV 66 etc.

1619.688 A Uwl 76.63 84.28 4/ 2 F°— 5g 2 G

UV 53

Air 1049.65 A ?>U) 76.63 88.44 4/ 2 F°— 6g

2 G 4333.38 P 88.02 90.88 OPH 6s 2 S — 7p

2 P

UV 54 4334.49 P 88.02 90.88 opoi 3

B7 v-3
Multiplet Table

Nv —Continued Nv —Continued

I A Ref Int E P

J

Multiplet I A Ref Int E P

J Multiplet

Low High No. Low High No.

Air Air 5274.66 P 88.33 90.68 ih-oi 6p

2 P°— 7s 2 S 4944.49 P 88.44 90.95 6g 2 G — 7h 2 H°

5272.04 P 88.33 90.68 O5—0^ 4 etc. 10 etc.

4750.57 P 88.33 90.94 l!-2! 6p

2 P°— 7d 2 D

4748.86 P 88.33 90.94 oi-tt 5 4944.71 P 88.44 90.95 6h 2 H°— 7i 2

I etc. 10.01 etc. 5067.60 P 88.43 90.88 24-li 6d 2 D — Ip 2 P° 5068 40 P 88.43

88.43

90 88 U-oi

2J6

4933.36 P 90.95 6d

2 D — 7/ 2 F° 6716.95 P 90.68 92.53 O5— H 7s 2 S — 8p 2 P°

4932.68 P 88.43 90.95 U-2i 7 6718.71 P 90.68 92.53 O!-Oj 11

4951.32 P 88.44 90.94 ~2i 6/

2 F°— 7d 2 D

4951.76 P 88.44 90.94 2J-H 8 7329.09 P 90.88 92.57 l4-2i 7p 2 P°— 8d 2 D

7326.57 P 90.88 92.57 Os-H 12 4944.56 A 9w 88.44 90.95 6/

2 F°— 7g 2 G

etc. 9 etc.

2998.43 A 5w 88.44 92.57 6/

2 F°— 8g2 G 7618.46 A 5w 90.95 92.57 7g 2 G — 8/1 2 H°

etc. 9.01 etc. etc. 13 etc.

67 v-4
NSRDS-NBS 3, SECTION 4

NITROGEN, Z = 7

A N VI Atomic Energy Levels

B Nvi Multiplet Table

Atomic Energy Levels

Part A NITROGEN

Nvi

He I sequence; 2 electrons Z = 7

Ground state Is2 'So

Is2 'So 4452758 cm-1

, 22.458 A (Vac) I P 552.057 eV

In 1940 Tyren reported his observations of the first three members of the singlet series, and

the intersystem combination Is2 'So — 2p 3P?, in the range 23 A to 29 A. The resulting energy levels are given in Edlen’s 1952 paper and are quoted here.

Bockasten and his colleagues have observed the triplet 25 3S —

2

p

3P°in a theta-pinch discharge

as source. Their wavelengths have been used to obtain the levels 2p 3P-2,i. The third line of the

group is blended with N III. For this reason, Edlen’s estimated value is quoted for 2p 3 P£ and

entered in brackets in the table. The difference, o-c, is only — 6 cm-1. The remaining levels are based on the observations reported in 1966 by Fawcett and Irons. The center of gravity of the 2p 3 P° term, 3438480 cm-1 has been used to evaluate the nd 3 D terms.

These authors give calculated wavelengths for the combinations with terms np 3 P° and nd 3 D to n— 10, but further observations are needed to extend the analysis.

The limit is from the theoretical work by Pekeris on the “Ground State of Two-Electron

Atoms.”

REFERENCES

F. Tyren, Nova Acta. Reg. Soc. Sci. Uppsala [IV] 12, No. 1, 24-26 (1940). I P, T, C L

B. Edlen, Ark. Fys. (Stockholm) 4, No. 28, 441-453 (1952). I P, T, C L

C. L. Pekeris, Phys. Rev. 112, No. 5, 1649-1658 (1958). I P. Theory

K. Bockasten, R. Hallin, K. B. Johansson and P. Tsui, Phys. Lett. 8, No. 3, 181-182 (1964). C L

B. C. Fawcett, F. E. Irons, Proc. Phys. Soc. (London) 89 , Part 4, No. 566, 1063-1064 (L) (1966).

A7 vi-1
Atomic Energy Levels

N vi N vi

Config. Desig. J Level Interval Config. Desig. J Level Internal

Is2 ls21 S 0 0 Is 3p 3p

1 P° 1 4016390

Is 2s 2s 3 S 1 3385890 Is 4p 4p 3 P° 0, 1, 2 4202620

[3438310]

Is 4c? 4d 3 D 1, 2. 3 4205820

Is 2p 2p

3 P° 0

[10]

290

1 3438320 Is 4

p

4p ‘P° 1 4206810

2 3438610

Is 5

p

5p

3 P° 1. 2, 3 4293080

Is 2

p

2p >P° 1 3473790

Is 5d 5d

3 D 1, 2, 3 4294570

Is 3p 3p

3 P° 0, 1, 2 4006160

Is 3g? 3c? 3 D 1, 2, 3 4013460 N vii (2 S0 i/ 2 ) Limit 4452758

July 1970

A7 vi-2
Multiplet Table

Part B NITROGEN

Nvi (Z = 7)

I P 552.057 eV Limit 4452758 cm 1 22.458 A

Anal C List A July 1970

REFERENCES

A F. Tyren, Nova Acta Reg. Soc. Sci. Uppsala [IV] 12 , No. 1, 24—26 (1940). I P, T, C L; W L 23 A to 29 A

B K. Bockasten, R. Hallin, K. B. Johansson and P. Tsui, Phys. Lett. 8, No. 3, 181-182 (1964). C L, I; W L 1896 A to 1907 A

C B. C. Fawcett, F. E. Irons, Proc. Phys. Soc. (London) 89, Part 4, No. 566, 1063-1064 (1966). C L; W L 97 A to 173A

* and § Blend N III and N VI

Nvi Nvi

IA Ref Int EP

J

Multiplet No. I A Ref Int EP

J

Multiplet No. Low High Low High

Vac Vac

29.084 A 0.00 426.29 0-1 ls 21S —2p

3P° 161.22 C 419.79 496.69 1- 2s 3 S — 3p 3P°

1 6

28.7874 A 0.00 430.68 0-1 ls 2, S —2p 'P°

122.44 C 419.79 521.05 1- 25 3S _4p

3po

7 2

110.23 C 419.79 532.26 1- 2s 3S -5p

3P°

24.898 A 0.00 497.96 0-1 Is 2 'S —3p >P° 3

8

23.771 A 0.00 521.56 0-1 ls 21 S — 4p ‘P° 4

173.92 C 426.31 497.59 2p

3 P°—

3

d

3D

9

130.32 C 426.31 521.44 2p

3P°— 4d 3D

10 1896.82 B 3 419.79 426.32 1-2 2s 3 S -2p

3P°

1907.34 B 2 419.79 426.29 1-1 5 116.81 C 426.31 532.45 2p

3 P°-5d 3D

* 1907. 87§ B 2 419.79 426.29 1-0 11

B7vi-1
»

.

.

.
NSRDS-NBS 3, SECTION 4

NITROGEN, 1=1

A N vil Atomic Energy Levels

B N vii Multiplet Table

Atomic Energy Levels

Part A NITROGEN

N vii

Hi sequence; 1 electron Z=1

Ground state Is 2 Soi/ 2

1s 2 S0 i/2 5380089 cm-1

, 18.587 A (Vac) I P 667.029 eV

In 1940 Tyren reported his observation of the first member of the Lyman series. This line was

also detected in 1963 in the Zeta spectrum by the workers at Culham Laboratory, during the initial phase of their study of high-temperature plasmas. The first two members of this series, at 24.8 A

and 20.8 A respectively, were identified in the far ultraviolet solar spectrum by R. L. Blake and his

colleagues in 1964.

The terms listed below have been calculated by J. D. Garcia and J. E. Mack in their extensive

paper on the H-like spectra, H I to CaXX. Their values refer to the isotope 14 N vii for which they

used the value R= 109733.00982.

Edlen has, also, calculated centre-of-gravity wavelengths of the Lyman lines Is— np, n = 2 to 7

for the natural isotope mixture, but the difference is negligible for N vii.

REFERENCES

F. Tyren, Nova Acta Reg. Soc. Sci. Uppsala [IV] 12, No. 1, 1-66 (1940). C L

B. C. Fawcett, A. H. Gabriel, W. G. Griffin, B. B. Jones and R. Wilson, Nature 200, No. 4913, 1303-1304 (L) (1963). C L

R. L. Blake, T. A. Chubb, H. Friedman and A. E. Unzicker, Science 146, No. 3647, 1037-1038 (Nov. 20, 1964). C L

J. D. Garcia and J. E. Mack, J. Opt. Soc. Am. 55, No. 6, 654-685 (1965). I P, T, C L

B. Edlen, Ark. Fys. (Stockholm) 31, No. 35, 509-510 (1966). C L

N vii N vii

Config. Desig. J Level

-j

Interval

\

Config. Desig. J Level Interval

Is Is

2 S Oh 0 4p 4p 2 P° Oh 5043853

6

45 4s 2 S 0j 5043859 104

2P 2p 2 P° Oh 4034761 45 4p, 4d 4d 2 D 4p 2 P° lh 5043963 36

2s 2s 2 S Oh 4034806 4d, 4f 4d 2 D 4/ 2 F° 2h 5043999 IQ

2P 2p|2 P° lh 4035641 odd V 4/ 2 F° 3

h

5044018

5P 5p 2 P° Oh 5164916

3

3P 3p 2 P° Oh 4782263 55 5s 2 S Oh 5164919 54

35 3s 2 S Oh 4782276

Id 5p, 5d 5d 2 D 5p 2 P° lh 5164973 18 3d 3d 2 D lh 4782523

z4/

5d, 5/ 5d 2 D 5/ 2 F° 2h 5164991

10 3P 3p 2 P° lh 4782524

1 qa 5/, 5g 5g 2 G 5/ 2 F° 3h 5165001

5 3d 3d 2 D 2h 4782610 5g 3g 2 G 4i 5165006

A7 vii-1
Atomic Energy Levels

NVII —Continued N VII — Continued

Config. Desig. / Level Interval Config. Desig. J Level Interval

6P 6p 2 P° Oi 5230673

2 lip llp 2 P° Oi 5335641 1 6s 6s 2 S oi 5230675 11s 11s 2 S Oi 5335642 Q

6d 6(7 2 D li 5230705 i etc. lOi to 51 6p 6p 2 P° li 5230706 10

6d. 6/ 6(7 2 D 6/ 2 F° 2i 5230716 12p 12p 2 P° Oi 5342741

i 6/, 6* 6* 2 G 6/ 2 F° 3i 5230722 Q 12s 12s 2 S Oi 5342742 7 6g. 6h 6* 2 G 6A 2 H° 4i 5230725 9

etc. IH to 49

6h 6A 2 H° 5s 5230727

z

13s, 13p 13s 2 S 13p 2 P° Oi 5348267

Ip 7p 2 P° Oi 5270319

1 etc. 12i to 72

Is 7s 2 S oi 5270320 90

7p. Id 7(7 2 D 7p 2 P° li 5270340

6

14s, 14p 14s 2 S 14p 2P° Oi 5352651 4

Id, 7/ 7(7 2 D If 2 F° 2i 5270346

4

etc. 13i to 55

7/, 7* lg 2 G If 2 F° 3s 5270350

2

7*, Ih lg 2 G Ih 2 H° 4i 5270352

l 15s, 15p 15s 2 S 15p 2 P° Oi 5356187 A

7h li 77 2 I 7/i 2 H° 5i 5270353

1 etc. 14i to 91

li 77 2 I 6* 5270354

16s, 16p 16s 2 S 16p 2 P° Oi 5359082

8p 8p 2 P° Oi 5296049

1 etc. 15i to 85

O

8s 8s 2 S Oi 5296050

13 8p, 8(7 8(7 2 D 8p 2 P° li 5296063 5

17s, 17p 17s 2 S 17p 2 P° Oi 5361481 9 8d. 8/ 8(7 2 D 8/ 2 F° 2i 5296068

2

etc. 16i to 83 8/ 8* 8* 2 G 8/ 2 F° 3i 5296070

1 8g, 8h 8* 2 G 8h 2 H° 4i 5296071

] 18s, 18p 18s 2 S 00tj o Oi 5363491 2

8/i, 87 87 2 1 8h 2 H° 5i 5296072

l etc. 17i to 93

8i, 87k 87 2 I 8

A- 2 K° 6i 5296073

o 8A 8A 2 K° 7i 5296073 19s, 19p 19s 2 S 19p 2 P° Oi 5365192 9

etc. 18i to 94

9p 9p 2 P° OJ 5313689

l 9s 9s 2 S Oi 5313690 9

20s, 20p 20s 2 S 20p 2 P° Oi 5366645

9P, 9(7 9(7 2 D 9p 2 P° li 5313699 etc. 19i to 46

I 9d, 9/ 9(7 2 D 9/ 2 F° 2i 5313702 9

9f. 9# 9* 2 G 9/ 2 F° 3i 5313704

9g, 9h 9* 2 G 9A 2 H° 4i 5313705

io

9h. 97 97 2

I 9A 2 H° 5i 5313705 1 00 = Limit 5380089

9i. 9k 97 2 I 9A 2 K° 6i 5313706 n

9k, 91 9/ 2 L 9A

2 K° 7i 5313706 n

91 91 2 L 8i 5313706

10

p

10p 2 P° oi 5326306

10s 10s 2 S Oi 5326307

i

10(7 10(7 2 D li 5326313

o 10p 10p 2 P° li 5326314

i

10(7, 10/ 10(7 2 D 10/ 2 F° 2i 5326316

z

10/, 10* 10* 2 G 10/ 2 F° 3i 5326317

i

10*, 10/t 10* 2 G 10/i 2 H° 4i 5326318

l

lO/i, 107 107 2 I 10A 2 H° 5i 5326318

u

107, 107c 107 2 I 10A 2 K° 6i 5326319

1

10A, 10/ 10/ 2 L 10A 2 K° 7i 5326319

0

107, 10;n 10/ 2 L 10m2 M° 8i 5326319

0 10m 10m2 M° 9i 5326319

u

April 1970.
Multiplet Table

Part B NITROGEN

N vil (Z= 7)

I P 667.029 eV Limit 5380089 cm-' 18.587 A (Vac)

Anal A List B April 1970

REFERENCES

A J. D. Garcia and J. E. Mack, J. Opt. Soc. Am. 55, No. 6, 654—685 (1965). I P, T, C L; W L 18 A to 18107 A (All wavelengths are from theoretical calculations of H-like spectra. For unresolved groups the wavelength has been derived

from “the wave number of the statistically weighted mean of all components.”)

B. Edlen, Ark. Fys. (Stockholm) 31, No. 35, 509-510 (1966). C L

N vii N vii

I A Ref Int E P

J Multiplet No.

I A Ref Int E P

J Multiplet No. Low High Low High

Vac Vac

24.7792 A 0.00 500.34 0j-H Is 2 S - 2p 2 P° 18.6976 A 0.00 663.08 Oh- Is 2 S — 13p 2 P°

24.7846 A 0.00 500.23 0z — Oh 1 12

20.9095 A 0.00 592.94 Is 2 S - 3p 2 P° 18.6823 A 0.00 663.63 Oh- Is 2 S — 14p 2 P°

20.9106 A 0.00 592.91 0J— 0J 2 13

19.8257 A 0.00 625.36 oi-n Is 2 S - 4p 2 P° 18.6700 A 0.00 664.07 Oh- Is 2 S — 15p 2 P°

19.8261 A 0.00 625.34 0|-0| 3 14

19.3612 A

' 0.00 640.36 o^-li Is 2 S - 5p 2 P° 18.6599 A 0.00 664.42 Oh- Is 2 S — 16p 2 P°

19.3614 A 0.00 640.35 Oh —

O

2 4 15

19.1179 A 0.00 648.51 0*-li Is 2 S - 6p 2 P° 18.6516 A 0.00 664.72 0z — Is 2 S — 17p 2 P°

19.1180 A 0.00 648.50 Oh — 0| 5 16

18.9741 A 0.00 653.42 01- 1* Is 2 S - 7p 2 P° 18.6446 A 0.00 664.97 Oh- Is 2 S — 18p 2 P°

18.9742 A 0.00 653.42 0^ — Oj 6 17

18.8819 A 0.00 656.61 Cft-li Is 2 S - 8p 2 P° 18.6387 A 0.00 665.18 Oh- Is 2 S — 19p 2 P°

18.8820 A 0.00 656.61 0^

01 7 18

18.8193 A 0.00 658.80 Ok- Is 2 S - 9p 2 P° 18.6336 A 0.00 665.36 Oh- Is 2 S —20p 2 P°

8 19

18.7747 A 0.00 660.36 oh- Is 2 S — lOp 2 P°

9

133.934 A 500.34 592.91 lk-ok 2p 2 P°— 3s 2 S

18.7419 A 0.00 661.52 Oh- Is 2 S -llp 2 P° 133.777 A 500.23 592.91 0* — Oi 20

10 133.874 A 500.34 592.95 H-2h 2p 2 P°— 3d 2 D

18.7170 A 0.00 662.40 Oh- Is 2 S — 12p 2 P° 133.732 A 500.23 592.94 oi-H 21

11 133.890 A 500.34 592.94 Ik-ti
Multiplet Table

N vil — Continued N VII — Continued

I A Ref Int E P

J Multiplet No.

I A Ref Int E P

J Multiplet No. Low High Low High

Vac Vac

99.185 A 500.34 625.34 B-o* 2p 2 P° — 4s 2 S 75.701 A 500.30 664.07 2p 2 P° — 15c? 2 D

99.098 A 500.23 625.34 0*-0* 22 etc. 42 etc.

99 134 A 500.30 625.36 2p 2 P°— 4c? 2 D

etc. 23 etc. 133.740 A 500.24 592.24 O2—

2s 2 S - 3p 2 P°

88.552 A 500.34 640.35 B— 0? 2p 2 P°— 5s 2 S 133.787 A 500.24 592.91 Ok — 0? 43

88.483 A 500.23 640.35 0£ — 0j 24

99.093 A 500.24 625.36 Oj-B 2s 2 S - 4p 2 P°

88.515 A 500.30 640.36 2p 2 P°— 5c?

2 D 99.103 A 500.24 625.34 Oj — Oj 44

etc. 25 etc. 88.482 A 500.24 640.36 ok —

2s 2 S - 5p 2 P°

83.680 A 500.34 648.50 li-o* 2p 2 P°— 6s 2 S 88.487 A 500.24 640.35 Oj — 0£ 45

83.618 A 500.23 648.50 0j — Ok 26

83.619 A 500.24 648.51 <*-B 2s 2 S - 6p 2 P°

83.648 A 500.30 648.51 2p 2 P°— 6c? 2 D 83.621 A 500.24 648.50 — Oj 46

etc. 27 etc. 80.937 A 500.24 653.42 Ok-lk 2s 2 S - 7p 2 P°

80.993 A 500.34 653.42 B-0* 2p 2 P°— 7s 2 S 80.938 A 500.24 653.42 Oj — O5 47

80.935 A 500.23 653.42 Ok — 0^ 28

79.286 A 500.24 656.61 ok— B 2s 2 S - 8p 2 P°

80.963 A 500.30 653.42 2p 2 P°— 7e? 2 D 79.287 A 500.24 656.61 0| — Oj 48

etc. 29 etc. 78.193 A 500.24 658.80 Os—

2s 2 S - 9p 2 P°

79.339 A 500.34 656.61 B-o* 2p 2 P°— 8s 2 S 78.132 A 500.24 658.80 CB — Oi 49

79.284 A 500.23 656.61 Oj — Oj 30

77.429 A 500.24 660.36 Ok- 2s 2 S -10p 2 P°

79.311 A 500.30 656.61 2p 2 P°— 8c? 2 D 50

etc. 31 etc.

78.244 A 500.34 658.80 lk-Ok 2p 2 P°— 9s 2 S

78.190 A 500.23 658.80 ok—ok 32 382.651 A 592.94 625.34 lk-Ok 3p 2 P°— 4s 2 S

382.269 A 592.91 625.34 Oj — Oj 51 78.217 A 500.30 658.80 2p 2 P°— 9d 2 D

etc. 33 etc. 261.510 A 592.94 640.35 B— Oi 3p 2 P°— 5s 2 S

261.331 A 592.91 640.35 Oj — Oj 52

77.479 A 500.34 660.36 B— Oj 2p 2 P° — 10s 2 S

77.427 A 500.23 660.36 Oj — Oj 34 223.139 A 592.94 648.50 B—Oj 3p 2 P°— 6s 2 S

223.009 A 592.91 648.50 Oj — Oj 53

77.453 A 500.30 660.36 2p 2 P° — 10c? 2 D

etc. 35 etc. 205.004 A 592.94 653.42 B—Oz 3p 2 P°— 7s 2 S

204.894 A 592.91 653.42 0| — Oj 54

76.923 A 500.34 661.52 B-o* 2p 2 P°— 11s 2 S

76.871 A 500.23 661.52 Ok — Ok 36 194.732 A 592.94 656.61 B-o^ 3p 2 P°— 8s 2 S

194.633 A 592.91 656.61 01-01 55

76.897 A 500.30 661.52 2p 2 P°— lle? 2 D

etc. 37 etc. 188.265 A 592.94 658.80 lk-Ok 3p 2 P°— 9s 2 S

188.173 A 592.91 658.80 Oj — Oj 56

76.505 A 500.34 662.40 B-<* 2p 2 P° — 12s 2 S

76.454 A 500.23 662.40 CB — 0^ 38 183.897 A 592.94 660.36 lk-Ok 3p 2 P° — 10s 2 S

183.809 A 592.91 660.36 0|-0| 57

76.480 A 500.30 662.40 2p 2 P° — 12c? 2 D

etc. 39 etc.

76.158 A 500.30 663.08 2p 2 P° — 13c? 2 D 382.136 A 592.91 625.36 <*-B 3s 2 S - 4p 2 P°

etc. 40 etc. 382.297 A 592.91 625.34 (^-Oi 58

75.904 A 500.30 663.63 2p 2 P° — 14c? 2 D 261.303 A 592.91 640.36 01-

3s 2 S - 5p 2 P°

etc. 41 etc. 261.342 A 592.91 640.35 01-01 59

B7 viii-2
Multiplet Table

N VII —Continued N VII —Continued

EP 0 EP

IA Ref Int J Multiplet No. IA Ref Int J

Multiplet No. Low High Low High

Vac Vac

223.000 A 592.91 648.51 Oz-B 35 2 S - 6p 2 P° 396.677 A 625.36 656.61 4<f 2 D - 8/ 2 F°

223.017 A 592.91 648.50 Oz — 0z 60 etc. 78 etc.

204.891 A 592.91 653.42 0z-B 3s 2 S - 7p 2 P° 370.741 A 625.36 658.80 4d 2 D - 9/ 2 F°

204.900 A 592.91 653.42 Oz — Oz 61

354.177 A 625.36 660.36

etc. 79 etc.

4(7 2 D —10/ 2 F°

etc. 80 etc. 382.445 A 592.95 625.36 3(7 2 D — 4/ 2 F°

etc. 62 etc.

261.449 A 592.95 640.36 3(7 2 D - 5/ 2 F°

etc. 63 etc. 1522.024 A 640.36 648.50 lz — Oz 5p 2 P°- 6s 2 S

1520.704 A 640.35 648.50 0*-0i 81 223.106 A 592.95 648.51 3(7 2 D - 6/ 2 F°

etc. 64 etc. 949.244 A 640.36 653.42 lz — Oz 5p 2 P°— 7s 2 S

948.731 A 640.35 653.42 Oz — Oz 82 204.980 A 592.95 653.42 3(7 2 D - 7/ 2 F°

etc. 65 etc. 762.910 A 640.36 656.61 B-<* 5p 2 P° — 8s 2 S

762.579 A 640.35 656.61 ot-ot 83

194.713 A 592.95 656.61 3(7 2 D - 8/ 2 F°

etc. 66 etc. 672.418 A 640.36 658.80 lz — Oz 5p 2 P°— 9s 2 S

672.160 A 640.35 658.80 Oz — Oz 84

188.248 A 592.95 658.80 3(7 2 D - 9/ 2 F°

etc. 67 etc. 619.832 A 640.36 660.36 H-o* 5p 2 P°— 10s 2 S

619.613 A 640.35 660.36 OJ-OJ 85

183.881 A 592.95 660.36 3(7 2 D —10/ 2 F°

etc. 68 etc.

1521.41 A 640.36 648.51 5(7 2 D - 6/ 2 F°

826.747 A 625.36 640.35 B—0| 4p 2 P° — 5s 2 S etc. 86 etc. 825.996 A 625.34 640.35 0£-0| 69

949.134 A 640.36 653.42 5(7 2 D - 7/ 2 F°

535.584 A 625.36 648.50 B-<# 4p 2 P° — 6s 2 S etc. 87 etc. 535.269 A 625.34 648.50 0£-0| 70

762.884 A 640.36 656.61 5(7 2 D - 8/ 2 F°

441.780 A 625.36 653.42 H-Q* 4p 2 P°- 7s 2 S etc. 88 etc. 441.565 A 625.34 653.42 0| — 0| 71 Vac

396.688 A 625.36 656.61 lz Oz 4p 2 P° — 8s 2 S 672.420 A 640.36 658.80 5(7 2 D - 9/ 2 F°

396.515 A 625.34 656.61 0J-0* 72 etc. 89 etc.

370.745 A 625.36 658.80 B-<# 4p 2 P°— 9s 2 S 619.844 A 640.36 660.36 5(7 2 D —10/ 2 F°

370.594 A 625.34 658.80 0|-0£ 73 etc. 90 etc.

354.178 A 625.36 660.36 lz — Oz 4p 2 P°— 10s 2 S

354.040 A 625.34 660.36 Oz — 0| 74

Air 2523.601 A 648.51 653.42 B—Oz 6p 2 P°— 7s 2 S

2521.500 A 648.50 653.42 o| -oi 91

Vac

826.385 A 625.36 640.36 4(7 2 D - 5/ 2 F° 1530.362 A 648.51 656.61 B-o* 6p 2 P°— 8s 2 S

etc. 75 etc. 1529.590 A 648.50 656.61 0^-0* 92

535.510 A 625.36 648.51 4(7 2 D - 6/ 2 F° 1205.052 A 648.51 658.80 B-oj 6p 2 P° — 9s 2 S

etc. 76 etc. 1204.573 A 648.50 658.80 0|-0| 93

441.753 A 625.36 653.42 4(7 2 D - 7/ 2 F° 1046.014 A 648.51 660.36 B-Of 6p 2 P° — 10s 2 S

etc. 77 etc. 1045.653 A 648.50 660.36 CB— oi 94

B7 vi i-3
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Selected Tables of Atomic Spectra

Atomic Energy Level s-Second Edition

Multi pi et Tables: N iv, M v, N vi, N vii

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