A UNITED STATES DEPARTMENT OF COMMERCE

PUBLICATION

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PUBLICATIONS ——

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

All 102146145

/NSRDS-NBS

QC100 U573 V3;6;1972 C.1 NBS-PUB-C 1964

NSRDS-NBS 3, Section 6

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epartment

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COMMERCE

National

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NSRDS

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Selected Tables

of Atomic Spectra

Atomic Energy Levels and Multiplet Tables

HlD, T
NATIONAL BUREAU OF STANDARDS

Tne National Bureau of Standards1 was established by an act of Congress March 3, 190!. Tne Bureaus 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

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

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INSTITUTE FOR BASIC STANDARDS provides the central basis within the

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- Part of the Center for Radiation Research.

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1 Part of the Center for Building Technology.
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Selected Tables of Atomic Spectra

A Atomic Energy Levels - Second Edition

B Multiplet Tables

tUD,T

Data Derived from the Analyses of Optical Spectra

Charlotte E. Moore

Office of Standard Reference Data

National Bureau of Standards

Washington, D.C. 20234

E. O. Hulburt Center for Space Research

U.S. Naval Research Laboratory

Washington, D.C. 20390

JV (\^s swv\ & V e ~ c <? d oJt^L Se\rirS

J y\/SPDC'/VS5 /U

U.S. DEPARTMENT OF COMMERCE, Peter G. Peterson, Secretary

NATIONAL BUREAU OF STANDARDS,

Issued September 1972
Library of Congress Catalog Card Number: 64-60074

NSRDS-NBS 3, Section 6

Nat. Stand. Ref. Data Ser., Nat. Bur. Stand. (U.S.), 3, Sec. 6, 36 pages (Sept. 1972)

CODEN: NSRDAP

© 1972 by the Secretory of Commerce on Behalf of the United States Government

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

(Order by SD Catalog No. C13.48:3/Sec. 6). Price 40 cents. Stock Number 0303-0998
Abstract

The present publication is the sixth 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. The spectra of hydrogen and of the isotopes deuterium

and tritium are included. The form of presentation is described in detail in the text to Section 1. Key words: Atomic energy levels. Hi, D, T; hydrogen spectra, Hi, D, T; multiplet tables, Hi,

D, T; spectra H I, D, T; wavelengths, hydrogen spectra H I, D, T.

Ill
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

and compilation of data and make recommendations on needed improvements in experimental

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

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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.

Lawrence M. Kushner, Acting Director

IV
Preface

The present publication is the sixth 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 University 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 has been 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: C I, C II, C III, C IV, C V, C VI. Section 4 includes four spectra of nitrogen,

Z= 7: N iv, N V, N VI, N VII. Section 5 is scheduled to include the remaining spectra of nitrogen:

N I, N II, N ill. 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 who has published the earlier tables.

She appreciates the cordial cooperation of numerous atomic spectroscopists. She is particularly

indebted to J. D. Garcia and the late J. E. Mack, who carried out the extensive calculations on

hydrogen-like spectra, especially for inclusion in this Series. W. C. Martin and his colleagues in the Spectroscopy Section of the National Bureau of Standards have provided valuable suggestions

regarding details in the text and tables. Special thanks are due Isabel D. Murray for her meticulous

care in preparing the tabular data. The splendid work of Barbara N. Somerville in typing the press

copy of this difficult tabular material is, also, gratefully acknowledged.

Washington, D.C., March 24, 1972.

V
-
Abstract.

Foreword

Preface . .

Contents

P»*e

III IVV

Element: Z

Hydrogen 1

Deuterium

Tritium

Element: Z

Hydrogen 1

Deuterium

Tritium

Part A— Atomic Energy Levels

Spectrum

Hi A1 i 1 to A1 i-3

D A1 D, T-l to A1 D, T-2

T A1 D, T-l to A1 D, T-2

Part B — Multiplet Tables

Spectrum

Hi B1 I 1 to B1 1-8

D B1 D-l

T B1 T-l
-

-
NSRDS--NBS 3, SECTION 6

HYDROGEN Z = 1

A Hi Atomic Energy Levels

B Hi Multiplet Table

Atomic Energy Levels

HYDROGEN

Part A Hi

1 electron Z = 1

Ground state Is 2Soi/2

Is 2So,/ 2 109678.764 cm- 1 , 911.754 A (Vac) I P 13.598 eV

The data quoted here refer to the light isotope of hydrogen JHl. Deuterium and tritium are being handled separately.

The energy levels of the spectra of the hydrogen isoelectronic sequence H I to Ca XX have

been calculated by Garcia and Mack and reported in a paper entitled “Energy Level and Line

Tables for One-Electron Atomic Spectra.” For H I the level values are derived to six decimal places

to n — 50, with R = 109677.576 cm-1

. In the present table the calculated values have been rounded off to three decimals. Intervals are quoted to four places only in cases of resolved levels. For further details users should consult

the original paper.

For unresolved groups the term designations in Part B have no real significance. The center of

gravity of all levels having a given value of n has been used to derive the quoted wavelength, re- gardless of the arbitrary designation entered with “etc.” throughout.

Since the publication of “Atomic Energy Levels,” Humphreys has reported the observation

of the first member of the Sixth Series of H I at 12.37 /x, the second line of the Pfund Series and the

third, fourth and fifth lines of the Brackett Series.

The Lamb shift and both fine and hyperfine structure of H I have been widely discussed in the

literature. In 1964 Edlen and Svensson derived accurate “centre-of-gravity” wavelengths of the

Lyman lines, Is — np, n = 2 to 7, and discussed “the various factors pertinent to their use as standards.”

Observations of H I in the radiofrequency range have been of far-reaching significance. For

example, the transition between the two hyperfine structure levels F=0 and F = 1 of the ground

term Is 2Soi/2 , 0.0475 cm'1

, is well known as the 21-cm line whose observed frequency is 1420 Mc/s.

The presence of ground state hydrogen atoms in the interstellar medium was first established by

the detection of this line.

A limited bibliography of work on H I was published by the writer in 1968. Many other papers

could be quoted, as for example, the recent work by Shyn and his associates on the measurement

of the 2s 2 So,/ 2 — 2p

2 Pb/2 energy separation as 9911.250 ± 0.063 MHz, as determined by an atomicbeam radiofrequency method.

A more recent paper by Hansch and his co-workers on Laser Saturation Spectroscopy is of

far-reaching importance. These authors have succeeded for the first time in resolving the single

fine structure components of H a, and have observed the Lamb shift directly in the optical absorption spectrum.

An excellent general summary of the astrophysical importance of “The Spectra of Hydrogen”

is contained in the Presidential Address to the Royal Society of Canada given by Herzberg in 1967.

A1 i-l
Atomic Energy Levels

H I — Continued

REFERENCES

C. J. Humphreys, J. Research Nat. Bur. Std. 50, No. 1, 1-6, RP 2380 (1953). T, C L

B. Edlen and L. A. Svensson, Ark. Fys. (Stockholm) 28, No. 36, 427—446 (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

G. Herzberg, Trans. Roy. Soc. Canada [IV] 5, 3-36 (1967). T, C L. G D, Fine structure, hfs.

C. E. Moore, Nat. Bur. Std. Special Publ. 306, Section 1, 1-2 (1968). Bibliography

T. W. Shyn, T. Rebane, R. T. Robiscoe, and W. L. Williams, Phys. Rev. A3, No. 1, 116-122 (1971). Fine structure.

T. W. Hansch, I. S. Shahin, A. L. Schawlow, Nature Phys. Sci. 235, No. 56, 63-66 (1972). Fine structure.

L. Hagan and W. C. Martin. Nat. Bur. Std. Special Publ. 363. 103 pp. (1972). Bibliography.

Config.

Is

2P

2s

2P

3P

3s3p, 3d

3d

4P

4s4p, 4d

4d, 4/

4/

5P

5s5p, 5d

3d, 5/

5g- 5/

5g

6P

6s6p, 6d

6d, 6/

0g

6/

6g, 6h 6h

Ip

Is

etc.

8s, 8

p

etc.

H I Hi

Desig. J Level Interval Config. Desig. J Level

Is 2 S Oh 0.000 9s, 9

p

9s 2 S 9p

2P° 0? 108324.713

etc. 91 2 L 00d" 0 to .720 2p

2P° Oh 82258.913

0.0353

2s 2S 0^ 82258.949 10s, 10p 10s 2S lOp 2P° 0h 108581.983

2p

2P° H 82259.279

U.DovA)

etc. 10m 2M° to 9h to .988

3p 2 P° Oi 97492.205

n m 11s, lip 11s 2S lip 2 P° Oh 108772.334

3s 2 S Oh 97492.215

n aoq etc. lln 2N to 10| to .338 3d 2 D 3p

2 P° H 97492.313

U.UVo 3d 2D 2h 97492.349

0.036

12s, 12p 12s 2S 12p 2P° Oh 108917.111

etc. to 1H to .114 4p 2P° Oh 102823.842

4s 2 S Oh 102823.846

0.0044

13s, 13p 13s 2S 13p 2 P° 01 109029.782 4d 2 D 4p

2 P° lh 102823.887

0.041

etc. to 12| to .784 4d

2 D 4/ 2F° 2h 102823.902

0.015 4/ 2F° 3h 102823.910

0.008 14s, 14p 14s 2S 14p 2P° 0h 109119.183

etc. to 13i to .185

5p

2 P° Oh 105291.621

5s 2 S Oh 105291.624 0.0023 15s, 15p 15s 2S 15p 2 P° Oh 109191.307 3d 2 D 5p

2 P° 1 h 105291.645 0.021 etc. to 14^ to .308 3d 2 D 5/ 2F° 2h 105291.653

0.008

5^ 2 G 3h 105291.656 0.003 16s, 16p 16s 2 S 16p 2 P° Oh 109250.335 5/ 2F° 3h 105291.657

0.0000 etc. to 151 to .336

5^ 2 G 4h 105291.659 0.0023

17s, 17p 17s 2 S 17p 2 P° Oh 109299.256

etc. to 161 to .257 6p

2 P° Oh 106632.141

6s 2 S Oh 106632.143

0.0013

0 012 18s, 18p 18s 2S 18p 2P° 01 109340.252

6 d

2 D 6p 2P

U H 106632.155

0 004 etc. to 17A to .253 6d

2D 6/ 2F° 2h 106632.159

6g

2 G 3h 106632.161

0.002 0 0000 19s, 19p 19s 2S 19p 2 P° 01 109374.947 6/ 2F° 3h 106632.162

0 001 etc. to 181 to .948 6g 2 G bh 2 H° 4h 106632.163 bh 2 H° 3h 106632.164

0.001

20s, 20p 20s 2 S 20p 2 P° 01 109404.570

etc. to 191 .570 Ip 2 P° Oh 107440.431

7s 2S Oh 107440.432

0.0008

ft ni £ 21s, 21p 21s 2 S 21p 2 P° 01 109430.062

li 2 I to bh to .446 U.U1D

etc. to 201 .062

8s 2S 8p 2 P° Oh 107965.042

ft ftlft 22s, 22

p

22s 2 S 22p

2 P° 01 109452.157

8A 2K° I to lh to .052 etc. to 211 to .158

Interval

0.007

0.005

0.004

0.003

0.002

0.002

0.001

0.001

0.001

0.001

0.001

0.001

A1 i-2
Atomic Energy Levels

Hi— Continued Hi — Continued

Config. Desig. J Level Interval Config. D isig. J Level Interval

23s, etc. 23s 2 S, etc. 04, etc. 109471.434 38s, etc. 38s 2S, etc. 04 , etc. 109602.810

24s, etc. 24s 2 S, etc. 04, etc. 109488.351

0.001

39s, etc. 39s 2 S, etc. 04, etc. 109606.655

to .352

40s, etc. 40s 2S, etc. 0£, etc. 109610.216

25s, etc. 25s 2 S, etc. 04 , etc. 109503.280

41s, etc. 41s 2S, etc. 04, etc. 109613.519

26s, etc. 26s 2S, etc. 04, etc. 109516.519

42s, etc. 42s 2S, etc. 04, etc. 109616.589

27s, etc. 27s 2S, etc. 04, etc. 109528.315

43s, etc. 43s 2 S, etc. 04, etc. 109619.447

28s, etc. 28s 2S, etc. 04, etc. 109538.869

44s, etc. 44s 2 S, etc. 04, etc. 109622.113

29s, etc. 29s 2S, etc. 04, etc. 109548.351

45s, etc. 45s 2S, etc. 04, etc. 109624.602

30s, etc. 30s 2 S, etc. 04, etc. 109556.900

46s, etc. 46s 2 S, etc. 04, etc. 109626.932

31s, etc. 31s 2S, etc. 04, etc. 109564.635

to .636 U.OUl

47s, etc. 47s 2 S, etc. 04, etc. 109629.114

32s, etc. 32s 2 S, etc. 04, etc. 109571.657 48s, etc. 48s 2 S, etc. 04, etc. 109631.161

33s, etc. 33s 2 S, etc. 04, etc. 109578.050 49s, etc. 49s 2S, etc. 04, etc. 109633.084

34s, etc. 34s 2 S, etc. 04, etc. 109583.887 50s, etc. 50s 2S, etc. 04, etc. 109634.893

35s, etc. 35s 2S, etc. Of, etc. 109589 231

36s, etc. 36s 2S, etc. 04, etc. 109594.136 Limit 109678.764

37s, etc. 37s

2 S, etc. 04, etc. 109598.649

August, 1971.

A1 i-3
V „
Multiplet Table

HYDROGEN

Part B H i (Z = 1 )

I P 13.598 eV Limit 109678.764 cm-1 911.754 A (Vac)

Anal A List B August 1971

The data given here refer to the light isotope of hydrogen } H I. REFERENCES

B. Edlen and L. A. Svensson, Ark. Fys. (Stockholm) 28, No. 36, 427-446 (1964). C L; W L 930.7483 A to 1215.6701 A

C. J. Humphreys, J. Research Nat. Bur. Std. 50, No. 1 , 1-6, RP2380 (1953). C L; W L 4861 A to 123684 A

A Wavelengths calculated from term values derived by J. D. Garcia and J. E. Mack, J. Opt. Soc. Am. 55, No. 6, 654-685

(1965). I P, T, C L; W L 914.0386 A to 887313.171 A. For higher values of n where the terms are unresolved, the wavelength derived from the statistical mean of the components is quoted.

P Predicted wavelength for series members having n >20, i.e., for series carried further than in reference A. In cal- culating these wavelengths the following mean values have been used for the lower level:

2p

2P° etc. 82259.102 cm-1

3d

2D etc. 97492.296 cm"1 4/ 2F° etc. 102823.890 cm'1 5g

2 G etc. 105291.649 cm*1 6h

2H° etc. 106632.159 cm' 1

New UV Multiplet Numbers start with UV 18. The Multiplet Numbers in the 1945 Multiplet Table (A. > 3000 A) have

been replaced. The newly-assigned numbers are printed in bold face type through number 14 to distinguish them

from the older ones.

%Raie Ultime

Hi HI

I A Ref Int

E P

J

Multiplet No.

I A Ref Int

E P

J

Multiplet No. Low High Low High

Vac Vac

1215.66834 A La 0.00 10.20 Of- If Is 2S — 2p

2P° 949.7430 A L8 0.00 13.05 of- If Is 2S — 5p *P° 1215.6737 A 0.00 10.20 Of- Of UV 1 949.7432 A 0.00 13.05 Of-Of UV 4

1025.7219 A L/3 0.00 12.09 of- If Is

2S — 3p

2P° 937.8034 A Le 0.00 13.22 Of— If Is *S — 6p *P° 1025.7230 A 0.00 12.09 Of- Of UV 2 937.8035 A 0.00 13.22 Of-Of UV 5

972.5367 A Ly 0.00 12.75 Of- If Is

2S — 4p

2P° 930.7483 A 0.00 13.32 Of- Is *S — 7p

S P°

972.5371 A 0.00 12.75 Of-Of UV 3 UV 6

926.2257 A 0.00 13.39 Of- Is *S — 8p »P° UV 7

B1 i-l
Multiplet Table

Hi — Continued Hi — Continued

I A Ref Int E P

J Multiplet No.

I A Ref Int E P

J Multiplet

Low High Low High No.

Vac Vac

923.1504 A 0.00 13.43 op Is 2S — 9p

2P°

UV 8

913.006 P 0.00 13.58 oh- Is 2 S —27p 2 P

UV 26

920.9631 A 0.00 13.46 oh- Is 2S —10p 2P° UV 9

912.918 P 0.00 13.58 oh- Is 2 S —28p 2 P

UV 27

919.3514 A 0.00 13.49 Oh- Is

2 S —lip 2 P° UV 10

912.839 P 0.00 13.58 Oh- Is 2 S —29p

2 P

UV 28

918.1294 A 0.00 13.50 Oh- Is

2S —12p 2P° UV 11

912.768 P 0.00 13.58 Oh- Is 2 S —30p 2 P° UV 29

917.1806 A 0.00 13.52 Oh- Is 2S —13p 2P° UV 12

912.703 P 0.00 13.58 Oh- Is 2 S —31p 2 P° UV 30

916.4291 A 0.00 13.53 Oh- Is

2S —14p 2P° UV 13

912.645 P 0.00 13.58 Oh- Is 2 S —32p

2 F

UV 31

915.8238 A 0.00 13.54 Oh- Is 2S —15p 2 P° UV 14

912.592 P 0.00 13.59 Oh- Is 2 S —33p 2 P° UV 32

915.3290 A 0.00 13.54 Oh- Is

2S —16p 2P° UV 15

912.543 P 0.00 13.59 Oh- Is 2 S —34p 2 P° UV 33

914.9193 A 0.00 13.55 Oh- Is 2 S —17p 2P° UV 16

912.498 P 0.00 13.59 Oh- Is 2 S —35p 2 P° UV 34

914.5763 A 0.00 13.56 Oh- Is 2 S —18p 2P° UV 17

912.458 P 0.00 13.59 Oh- Is 2 S —36p 2 P° UV 35

914.2862 A 0.00 13.56 Oh- Is 2 S —19p 2P° UV 18

912.420 P 0.00 13.59 op Is 2 S —37p

2 P

UV 36

914.0386 A 0.00 13.56 Oh- Is 2 S —20p 2 P° UV 19

912.385 P 0.00 13.59 Oh- Is 2 S —38p 2 P

UV 37

913.826 P 0.00 13.57 Oh- Is 2 S —21p 2 P

UV 20

912.353 P 0.00 13.59 Oh- Is 2 S —39p 2 P

UV 38

913.641 P 0.00 13.57 Oh- Is 2 S —22p 2 P

UV 21

912.324 P 0.00 13.59 Oh- Is 2 S —40p 2 F

UV 39

913.480 P 0.00 13.57 Oh- Is 2 S —23p

2 P

UV 22

912.296 P 0.00 13.59 op

• Is 2 S —41p 2 P

UV 40

913.339 P 0.00 13.57 Oh- Is 2 S —24p 2 P

UV 23

912.271 P 0.00 13.59 op Is 2 S —42p 2 P

UV 41

913.215 P 0.00 13.58 Oh- Is 2 S —25p

2 P

UV 24

912.247 P 0.00 13.59 OP Is 2 S —43p 2 P

UV 42

913.104 P 0.00 13.58 Oh- Is 2 S —26p

2 P

UV 25

912.225 P 0.00 13.59 OP Is 2 S —44p 2 F

UV 43

B1 i-2
Multiplet Table

B1 i-3
Multiplet Table

Hi- Continued Hi — Continued

I A Ref Int E P

J Multiplet No.

I A Ref Int E P

J Multiplet

Low High Low High No.

Air Air

3682.808 A 10.20 13.56 2p

2 P°—20

d

2 D

etc. 18 etc. 3651.822 P 10.20 13.59 2p

2 P—50d 2 D

etc. 37 etc. 3679.352 P 10.20 13.57 2p

2 P—21 d2 D

etc. 19 etc.

3676.363 P 10.20 13.57 2p

2 P—22d2 D 3645.979 A 10.20 13.60 2p

2 P—Limit

3673.758 10.20 13.57

etc. 20 etc. etc. 38

P 2p

2 P—23d 2 D

etc. 21 etc. 18751.210 A 12.09 12.75 li-oi 3p 2P°— 4s 2 S

3671.476 P 10.20 13.57 2p

2 P—24d 2 D 18750.830 A 12.09 12.75 01- 01 39.01

etc. 22 etc. 18750.724 A 12.09 12.75 Oi-I* 3s 2 S — 4p 2po

3669.464 P 10.20 13.58 2p

2 P—25

d

2 D 18750.883 A 12.09 12.75 Oi-Oi 39.02

etc. 23 etc. 18751.015 A 12.09 12.75 3d 2D — 4/ 2p°

3667.682 P 10.20 13.58 2p

2 P—26

d

2 D etc. 39 etc.

etc. 24 etc. 12818.140 A 12.09 13.05 li-oi 3p 2P°— 5s 2S

3666.095 P 10.20 13.58 2p

2 P—27

d

2 D 12817.962 A 12.09 13.05 0i-0£ 40.01

etc. 25 etc. 12817.945 A 12.09 13.05 oj-H 3s 2S — 5

p

2p°

3664.677 P 10.20 13.58 2p

2 P—28

d

2 D 12817.983 A 12.09 13.05 Oi-Oi 40.02

etc. 26 etc. 12818.082 A 12.09 13.05 3d 2 D — 5

/

2p°

3663.403 P 10.20 13.58 2p

2 P—29

d

2 D etc. 40 etc.

etc. 27 etc. 10938.126 A 12.09 13.22 li-Oi 3p

2P°— 6s 2 S

3662.256 P 10.20 13.58 2p

2 P—30

d

2 D 10937.998 A 12.09 13.22 Oi-Oi 41.01

etc. 28 etc. 10937.995 A 12.09 13.22 o*-H 3s 2S — 6

p

2p°

3661.219 P 10.20 13.58 2p 2 P—31 d

2 D 10938.012 A 12.09 13.22 Oi-Oi 41.02

etc. 29 etc.

3660.277 P 10.20 13.58 2p 2 P—32d 2 D

etc. 30 etc. 10938.095 A 12.09 13.22 3d 2D — 6/ 2p°

etc. 41 etc.

3659.420 P 10.20 13.59 2p 2 P—33

d

2 D

10049.374 A 12.09 13.32 3d 2 D — 7/

2po

etc. 31 etc. etc. 42 etc.

3658.639 P 10.20 13.59 2p 2 P—34

d

2 D

9545.972 A 12.09 13.39 3d 2D — 8/ 2p°

etc. 32 etc.

etc. 43 etc.

3657.923 P 10.20 13.59 2p 2 P—35d 2 D 9229.015 A 12.09 13.43 3d 2 D — 9/ 2p°

etc. 33 etc.

etc. 44 etc.

3657.267 P 10.20 13.59 2p

2 P—36d 2 D 9014.911 A 12.09 13.46 3d 2 D —10/ 2p°

etc. 34 etc.

etc. 45 etc.

3656.663 P 10.20 13.59 2p 2P°—37d 2D 8862.784 A 12.09 13.49 3d 2D —11/ 2P°

etc. 35 etc. etc. 46 etc.

3656.107 P 10.20 13.59 2p 2 P—38d 2 D 8750.473 A 12.09 13.50 3d 2 D —12/ 2p°

etc. 36 etc. etc. 47 etc.

B1 i-4
Multiplet Table

H I — Continued H I — Continued

I A Ref Int E P

J Multiplet No.

I A Ref Int E P

J Multiplet

Low High Low High No.

Air Air

8665.019 A 12.09 13.52 3d

2 D —13/ 2p 8276.309 P 12.09 13.58 3d 2D —32/ 2F°

etc. 48 etc. etc. 67 etc.

8598.392 A 12.09 13.53 3d

2 D —14/ 2 jr° 8271.932 P 12.09 13.59 3d 2 D —33/ 2F°

etc. 49 etc. etc. 68 etc.

8545.383 A 12.09 13.54 3d 2 D —15/ 2p 8267.938 P 12.09 13.59 3d 2 D —34/ 2F°

etc. 50 etc. etc. 69 etc.

8502.483 A 12.09 13.54

' 3d 2 D —16/ 2p 8264.286 P 12.09 13.59 3d 2D —35/ T0

etc. 51 etc. etc. 70 etc.

8467.254 A 12.09 13.55 3d 2 D —17/ 2p 8260.936 P 12.09 13.59 3d 2D —36/ 2F°

etc. 52 etc. etc. 71 etc.

8437.955 A 12.09 13.56 3d 2 D —18/ 2p 8257.856 P 12.09 13.59 3d 2D —37/ *F°

etc. 53 etc. etc. 72 etc.

8413.318 A 12.09 13.56 3d 2 D —19/ 2p 8255.019 P 12.09 13.59 3d 2D —38/ T

0

etc. 54 etc. etc. 73 etc.

8392.397 A 12.09 13.56 3d 2 D —20/ 2p

etc. ' 55 etc. 8233.208 A 12.09 13.59 3d 2D —50/ 2F° 8374.476 P 12.09 13.57 3d 2 D —21/ 2p etc. 74 etc.

etc. 56 etc.

8359.004 P 12.09 13.57 3d 2 D —22/ 2p

etc. 57 etc. 8203.568 A 12.09 13.60 3d 2D —Limit 8345.553 P 12.09 13.57 3d 2 D —23/ 2p 75

etc. 58 etc.

8333.784 P 12.09 13.57 3d 2 D —24/ 2p

etc. 59 etc. 40511.92 A 12.75 13.05 U-Oi 4p 2P°— 5s 2S

40511.17 A 12.75 13.05 Oi-Oi 76.01

8323.426 P 12.09 13.58 3d 2 D —25/ 2p

etc. 60 etc. 40510.87 A 12.75 13.05 Oi-H 4s 2S— 5p

2P° 40511.28 A 12.75 13.05 Oi-oi 76.02

8314.261 P 12.09 13.58 3d 2 D —26/ 2p

etc. 61 etc. 40511.579 A 12.75 13.05 4/ T

0 — 5g°-G 76

8306.112 P 12.09 13.58 3d 2D —27

/

2p°

etc. 62 etc. 26251.57 A 12.75 13.22 H-0£ 4p 2P°— 6s 2S

26251.27 A 12.75 13.22 Of-Oi 77.01 8298.836 P 12.09 13.58 3d 2D —28/ 2p

etc. 63 etc. 26251.21 A 12.75 13.22 04-H 4s 2S — 6p

!P°

26251.31 A 12.75 13.22 Oi-Oi 77.02 8292.308 P 12.09 13.58 3d 2D —29/ 2p°

etc. 64 etc. 26251.512 A 12.75 13.22 4/ *F° — 6**0

77 8286.432 P 12.09 13.58 3d 2D —30/ 2p°

etc. 65 etc.

8281.123 P 12.09 13.58 3d 2D —31/ 2F

o 21655.287 A 12.75 13.32 4/ *F°— 7#r Hi

etc. 66 etc. etc. 78 etc.

B1 i-5
Multiplet Table

Hi— Continued Hi — Continued

F P

Multiplet

F. P

I A Ref Int J I A Ref Int J

Multiplet

Low High

No. Low High

No.

Air

j Air

19445.564 A 12.75 13.39 4/ 2F° — 8g

2G 14888.010 P 12.75 13.58 4f

2F° —28g 2G

etc. 79 etc. etc. 99 etc.

18174.123 A 12.75 13.43 4f

2F° — 9g 2G 14867.017 P 12.75 13.58 4/ 2 P—29g 2 G

etc. 80 etc.; etc. 100 etc.

17362.110 A 12.75 13.46 4/ 2F°—10g 2G 14848.142 P 12.75 13.58 4/ 2 P—30g 2 G

etc. 81 etc.| etc. 101 etc.

16806.522 A 12.75 13.49 4f

2F° —1 lg 2G

etc. 82 etc. 14678.114 P 12.75 13.59 4/ 2 P— 50g 2 G

etc. 102 etc. 16407.193 A 12.75 13.50 4f

2F° —12g 2G

74578.80 A 13.05 13.22 H-oj 5p

2 P— 65 2 S

etc. 83 etc.

16109.314 A 12.75 13.52 4f

2F° —13g 2G

etc. 84 etc.

103.01

15880.543 A 12.75 13.53 4f

2F°—14g 2G 74578.250 A 13.05 13.22 5g

2 G — 6h2 H°

etc. 85 etc. 103

15700.663 A 12.75 13.54 4f

2F° —15g 2 G

etc. 86 etc. 46525.098 A 13.05 13.32 5g 2 G — lh 2 W

etc. 104 etc. 15556.450 A 12.75 13.54 4f

2F° —16g 2G

etc. 87 etc. 37395.370 A 13.05 13.39 5g 2 G — 8h 2 H°

etc. 105 etc. 15438.922 A 12.75 13.55 4f

2F° —17g 2G

etc. 88 etc.

4f

2F° —18g 2G

32960.929 A 13.05 13.43 5g 2 G — 9h 2 H°

etc. 106 etc. 15341.791 A 12.75 13.56

etc. 89 etc. 30383.737 A 13.05 13.46 5g 2 G — 10h

2 H°

15260.539 A 12.75 13.56 4f

2F° —19g 2G

etc. 107 etc.

etc. 90 etc. 28722.126 A 13.05 13.49 5g

2 G — ll/i 2 H°

15191.845 A 12.75 13.56 4f

2F°

20g

2G

etc. 108 etc.

etc. 91 etc. 27575.156 A 13.05 13.50 5g

2 G°— \2h 2 H°

15133.225 P 12.75 13.57 4f

2F°—21 g

2G

etc. 92 etc. 26744.018 A 13.05 13.52

etc. 109 etc.

5g 2 G°— 13h

2H°

15082.777 P 12.75 13.57 4f

2F°—22g

2G

etc. 110 etc.

etc. 93 etc. 26119.352 A 13.05 13.53» 5g 2 G — 14A 2H°

15039.040 P 12.75 13.57 4/ 2 F° —23g 2G . etc. Ill etc.

etc. 94 etc. 25636.276 A 13.05 13.54 5g 2G — 15/i 2H°

15000.862 P 12.75 13.57 4f

2F° —24g 2G etc. 112 etc.

etc. 95 etc. 25254.015 A 13.05 13.54 5g 2G — 16h

2 H°

14967.131 P 12.75 13.58 4f

2F° —25g 2G etc. 113 etc. etc. 96 etc. 24945.738 A 13.05 13.55 5g 2 G — 17h

2H°

14937.730 P 12.75 13.58 4f

2F° —26g 2G etc. 114 etc.

etc. 97 etc. 24693.137 A 13.05 13.56 5g 2G — 18/i 2 H°

14911.447 P 12.75 13.58 4/ 2F° —27g 2G

etc. 98 etc.

etc. 115 etc.

B 1 1-6
Multiplet Table

Hi — Continued H I — Continued

I A Hef Int EP

J

Multiplet No.

I A Kef Int EP

J

Multiplet No. Low High Low High

Air Air

24483.323 A 13.05 13.56 5g

2G — m 2 H° 113056.141 A 13.32 13.43 7i 2

I — 9k Z K°

etc. 116 etc. etc. 135 etc.

24306.989 A 13.05 13.56 5g

2 G — 20h2 H° 87576.773 A 13.32 13.46 7i H — 10A 2 K°

etc. 117 etc. etc. 136 etc.

75060.591 A 13.32 13.49 li 2

I — 11A 2 K°

23017.983 P 13.05 13.59 5g

2G — 50h 2 H° etc. 137 etc.

etc. 118 etc. 67701.453 A 13.32 13.50 li 2

I — 12A 2 K°

etc. 138 etc. 123685.270 A 13.22 13.32 6h -H°— li 2 I etc. 119 etc. 62902.015 A 13.32 13.52 li 2

I -13A 2 K°

etc. 139 etc. 75004.488 A 13.22 13.39 6h 2H°— 8/ 2 I etc. 120 etc. 59552.203 A 13.32 13.53 li 2 I —14A 2 K°

etc. 140 etc. 59066.034 A 13.22 13.43 6h

2 H°— 9i

2 I etc. 121 etc. 57099.058 A 13.32 13.54 li 2

I —15A 2 K°

etc. 141 etc. 51272.598 A 13.22 13.46 6h -H°— 10i

2 I etc. 122 etc. 55236.826 A 13.32 13.54 li 2 I —16A 2 K'

etc. 142 etc

46712.353 A 13.22 13.49 6h

2 H°— lit 2I 53783.083 A 13.32 13.55 li 2I —17A 2 K°

etc. 123 etc.

etc. 143 etc

43752.617 A 13.22 13.50 6h

2 H°— 12i 2I 52622.492 A 13.32 13.56 li 2 I —18A 2 K°

etc. 124 etc. etc. 144 etc

41696.572 A 13.22 13.52 6h

2H°— 13t 2I 51678.714 A 13.32 13.56 li 2I —19A 2 K°

etc. 125 etc. etc. 145 etc.

40197.716 A 13.22 13.53 6h

2 H°— 14t 2 I 50899.318 A 13.32 13.56 li 2

I —20A 2K°

etc. 126 etc. etc. 146 etc

39064.836 A 13.22 13.54 6h

2 H°— 15/ 2 I etc. 127 etc. 277958.040 A 13.39 13.43 8 A

2 K°— 91 -L 38184.101 A 13.22 13.54 6h

2 H°—16/ 2 I etc. 147 etc

etc. 128 etc. 162046.877 A 13.39 13.46 8A

2 K°—10/ 2 L

37483.714 A 13.22 13.55 6h

2 H°— 17/ 2 I etc. 148 etc

etc. 129 etc.

36916.270 A 13.22 13.56 6h

2 H°— 18/ 2

I 123837.927 A 13.39 13.49 8A 2 K°—11/ 2 L

etc. 149 etc. etc. 130 etc.

36449.295 A 13.22 13.56 6h 2 H°— 19/ 2

I 105006.373 A 13.39 13.50 8A 2K°—12/ 2 L

etc. 131 etc. etc. 150 etc

36059.849 A 13.22 13.56 6h

2 H°— 20t 2

1 93894.586 A 13.39 13.52 8 A

!K°—13/ -L

etc. 132 etc. etc. 151 etc

86621.417 A 13.39 13.53 8 A -K°—14/ : L

33293.900 P 13.22 13.59 6h 2 H°— 50/ 2

1 etc. 152 etc 133 81526.684 A 13.39 13.54 8A -K°—15/ S L

etc. 153 etc. 190567.045 A 13.32 13.39 li 2

I — 8A 2 K°

etc. 134 etc.

B1 i-7
Multiplet Table

Hi — Continued Hi — Continued

I A Ref Int EP

J Multiplet No.

I A Ref Int EP

J Multiplet No. Low High Low High

Air

388592.763 A 13.43 13.46 91 2L —10m 2M°

etc. 154 etc.

Air

141792.199 A 13.43 13.52 91 2L —13m 2M°

etc. 157 etc.

223343.698 A 13.43 13.49 91 2L —11m 2M°

etc. 155 etc.

125836.471 A 13.43 13.53 91 2 L —14m 2 M°

etc. 158 etc.

168760.287 A 13.43 13.50 91 2 L —12m 2 M°

etc. 156 etc.

115363.473 A 13.43 13.54 91 2L —15m 2 M°

etc. 159 etc.

B 1 1-8
NSRDS-NBS 3, SECTION 6

DEUTERIUM AND TRITIUM Z = 1

A D and T Atomic Energy Levels

B D Multiplet Table

B T Multiplet Table

Atomic Energy Levels

DEUTERIUM AND TRITIUM

Part A D AND T

1 electron Z — 1

Ground state Is 2 Soi /2

Is 2 Soi / 2 D(2 H I) 109708.608 cm- 1 , 911.500 A (Vac) I P (D)13.602 eV

Is 2 S 0 i /2 T(^H i) 109718.538 cm- 1

, 911.423 A (Vac) I P (T)13.603 eV

The energy levels are quoted from the paper by Garcia and Mack, who calculated “Energy

Levels and Line Tables for One-Electron Atomic Spectra” for the spectra of the hydrogen iso- electronic sequence H I to Ca XX. For D and T the level values are determined to six decimal

places to « = 50, with R = 109707.420 (D) and 109717.350 (T), respectively.

In the present table the calculated values have been rounded off to three decimals. Intervals are given to four places only in cases of resolved levels. For further details users should consult

the original paper, in which the formulas and constants are fully described.

REFERENCE

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

D D

Config. Desig. J Level Level

Is Is 2 S Of 0.000 0.000

2p 2p

2 P° Of 82281.296 82288.743

2s 2s 2 S Oh 82281.331 82288.779

2P 2p

2 P° n 82281.662 82289.109

3P 3p

2 P° Oh 97518.732 97527.559

35 3s 2 S of 97518.743 97527.569

3d 3d 2 D if 97518.840 97527.667

3P 3p

2 P° lh 97518.841 97527.667

3d 3d 2 D 2h 97518.877 97527.703

4p 4p

2 P° Oh 102851.820 102861.129

4s 4s 2 S Oh 102851.824 102861.133

4p, 4d 4d 2 D 4p

2 P° if 102851.866 102861.175

4d, 4

4d 2 D 4/ 2 F° 2h 102851.881 102861.190

¥ 4/ 2 F° 3h 102851.888 102861.198

5p 5p

2 P° Of 105320.271 105329.804

5s 5s 2 S of 105320.274 105329.806

5p, 5d 3d 2 D 5p 2 P° If 105320.295 105329.827

5d, 5/ 3d 2 D 5/ 2 F° 2h 105320.303 105329.835

5/, 3g 5g

2 G 5/ 2 F° 3h 105320.306 105329.839

5g 5g 2 G 4h 105320.309 105329.841

Interval

0.0353 0.3307

0.0105

0.0978 0.0002 0.0360

0.0044

0.041 0.015 0.0076

0.0023

0.0211 0.0078 0.0039

0.0023

Config. Desig. J Level

6P 6p

2 P° Of 106661.156

6s 6s 2 S Of 106661.157

6p, 6d 6d 2 D 6p

2 P° If 106661.169

6d, 6/ 6d 2 D 6f

2 F° 2f 106661.174

6/, 6g 6g

2 G 6f2 F° 3f 106661.176

6g, 6h 6g 2 G 6h

2 H° 4f 106661.178

6h 6h 2 H° 5f 106661.178

7P Ip 2 P° Of 107469.666

7s 7s 2 S Of 107469.667

7p. Id Id 2 D Ip 2 P° If 107469.674

Id, If Id 2 D If 2 F° 2f 107469.677

7/, 7g Ig 2 G If 2 F° 3f 107469.679

7g, lh lg 2 G lh 2 H° 4f 107469.679

lh, li li 2

I lh 2 H° 5f 107469.680

li li 2 I 6f 107469.680

8P 8p 2 P° Of 107994.419

8s 8s 2 S Of 107994.420

8p, 8d 8d 2 D 8p 2 P° If 107994.425

8d, 8/ 8d 2 D 8/ 2 F° 2f 107994.427

00 00 8g

2 G 8/ 2 F° 3f 107994.428

00 CO *< 8p 2 G 8h

2 H° 4f 107994.428

8h, 88i 2I 8/1 2 H° 5f 107994.429

do 00 81 2

1 8A- 2 K° 6f 107994.429

00 8A 2 K° 7f 107994.429 |

Level

106670.810

106670.811 106670.823

106670.828 106670.830

106670.831 106670.832

107479.393 107479.394

107479.401 107479.404

107479.406

107479.406

107479.407 107479.407

108004.194 108004.194

10800-1.199 108004.201 108004.202

108004.203 108004.203

108004.203 108004.204

Interval

0.0013

0.0122 0.0045

0.0022 0.0014

0.0009

0.0018

0.0077

0.0028

0.0014

0.0009

0.0006

0.0004

0.0006

0.0052 0.0019

0.0009

0.0006

0.0004

0.0003

0.0002

A1 D, T-l
Atomic Energy Levels

D and T—Continued

D T D T

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

9P 9p

2 P° 01 108354.188 108363.995

0 0004 lOp lOp 2 P° Oh 108611.528 108621.359

0 0003

95 9s 2 S 01 108354.188 108363.995

0.0036

10s 10s 2 S Oh 108611.529 108621.359

0.0026

9p, 9d 9d 2 D 9p

2 P° H 108354.192 108363.999 0 001

3

lOp, lOrf 10t/ 2 D lOp 2 P° 1 h 108611.531 108621.362 0 0010

9d, 9/ 9d 2 D 9/

2F° 21 108354.193 108364.000 0 0007 10d, 10/ 10</ 2 D 10/ 2 F° 2h 108611.532 108621.363

0 0005

9/, 9g 9g

2 G 9/ 2F° 31 108354.194 108364.001 0 0004 10/, 10* lOg 2 G 10/ 2 F° 3h 108611.533 108621.363

0 0003

9g, 9h 9g 2 G 9h 2 H° 41 108354.194 108364.001 0 0003 lOg, 10* lOg 2 G lOh 2 H° 4h 108611.533 108621.363 0 000?

9h, 9i 9i 2 I 9* 2 H° 51 108354.195 108364.002

0 0009 10A, lOi 10/ 2 I 10* 2 H° 5h 108611.533 108621.364 0 0001 9/, 9k 9i 2 I 9* 2 K° 61 108354.195 108364.002

0 0001 10/ 10* 10/ 2

I 10* 2 K° 6h 108611.533 108621.364

0 0001

9k, 91 91 2 L 9* 2 K° 71 108354.195 108364.002 0 0001 10*, 10/ 10/ 2 L 10* 2 K° lh 108611.533 108621.364

0 0001

91 9/ 2 L 81 108354.195 108364.002 10/, 10m 10/ 2 L 10m 2 M° 85 108611.534 108621.364

0.0001 10m 10m 2 M° 9h 108611.534 108621.364

Limit 109708.608 109718.538

February 1972.

A1 D, T-2
Multiplet Table

DEUTERIUM

Part B D(?H i)

I P 13.602 eV Limit 109708.608 cm'1 911.506 A (Vac)

Anal A List C February 1972

REFERENCE

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 925.9737 A to 123652.691 A. For higher values of n where the terms are unresolved, the wavelength derived from the statistical mean of the components is quoted.

New Multiplet Numbers have been assigned.

D D

I A Ref Int E P

J

Multiplet No.

I A Ref Int EP

J

Multiplet No. Low High Low High

Vac Air 1215.3376 A 0.00 10.20 0i-U Is 2 S -2

p

2po 6561.0104 A Da 10.20 12.09 2p 2 P° —3d 2 D

1215.3430 A 0.00 10.20 0i-0i UV 1 etc. 1 etc.

1025.4429 A 0.00 12.09 oj-ii Is 2 S —3

p

2p° 4860.0028 A D/J 10.20 12.75 2p 2 P° —4d 2 D

1025.4401 A 0.00 12.09 0i-0i UV 2 etc. 2 etc.

972.2721 A 0.00 12.75 oi-ii Is 2 S —4p 2 p° 4339.2829 A Dy 10.20 13.06 2p 2 P° — 5d 2 D

972.2725 A 0.00 12.75 0i-0J UV 3 etc. 3 etc.

949.4846 A 0.00 13.06 oi-li Is 2 S —5

p

2 p° 4100.6191 A D6 10.20 13.22 2p 2 P° — 6d 2 D

949.4848 A 0.00 13.06 OJ-Oi UV 4 etc. 4 etc.

937.5483 A 0.00 13.22 ot-U Is 2 S —6p 2JX> 3968.9922 A De 10.20 13.32 2p 2 P°

Id 2 D

937.5484 A 0.00 13.22 0i-0i UV 5 etc. 5 etc.

930.4951 A 0.00 13.32 0i- Is 2 S —7p

2fK> 3887.9909 A 10.20 13.39 2p 2 P°

6d *D

UV 6 etc. 6 etc.

925.9737 A 0.00 13.39 0i- Is 2 S —8p 2JJO UV 7 18745.914 A 12.09 12.75 3d S D —4/ *P

etc. 7 etc.

911.5055 A 0.00 13.60 0£- Is 2 S — Limit 12814.595 A 12.09 13.06 3d *D —5/ 2 P

UV 8 etc. 8 etc.

10935.120 A 12.09 13.22 3d 2 D —6/ tp

etc. 9 etc.

10046.640 A 12.09 13.32 3d *D —7/ ip

etc. 10 etc.

9543.375 A 12.09 13.39 3d‘D —8/ ip

etc. 1

etc.

B1 D-l
. -i' •

• v '# j

.. .. ;

.

;

: i

k. ’

<

: I :: .
Multi plet Table

TRITIUM

Part B T(?H i)

I P 13.603 eV Limit 109718.538 cm-1 911.423 A (Vac)

Anal A List D February 1972

REFERENCE

A J. D. Garcia and J. E. Mack, J. Opt. Soc. Am. 55, No. 6, 654-685 (1965). I F, T, C L; W L 925.8900 A to 123641.500 A

For higher values of n where the terms are unresolved, the wavelength derived from the statistical mean of the components is quoted.

T T

I A Ref Int E P

J

Multiplet No.

I A Ref Int E P

J

Multiplet No. Low High Low High

Vac Air 1215.2276 A 0.00 10.20 0i-H Is 2 S —2p

2 P° 6560.4166 A Ta 10.20 12.09 2p 2 P

3d 2 D

1215.2330 A 0.00 10.20 0F-0* UV 1 etc. 1 etc.

1025.3501 A 0.00 12.09 oi-H Is 2 S —3p

2 P° 4859.5630 A T/3 10.20 12.75 2p 2 P°

\d 2 D

1025.3512 A 0.00 12.09 0£-0£ UV 2 etc. 2 etc.

972.1841 A 0.00 12.75 Is 2 S —4p 2 P 4338.8902 A Ty 10.20 13.06 2p

2 P—5<f 2 D

972.1845 A | 0.00 12.75 0£-0* UV 3 etc. 3 etc.

949.3987 A 0.00 13.06 oi-n Is 2 S —5p 2 P° 4100.2479 A T8 10.20 13.23 2p

2 P—

6

d

2 D

949.3989 A 0.00 13.06 0*-0£ UV 4 etc. 4 etc.

937.4635 A 0.00 13.23 ot-n Is 2 S —6p

2 P° 3968.6329 A Te 10.20 13.33 2p 2 P—Id 2 D

937.4636 A 0.00 13.23 0i-0i UV 5 etc. 5 etc.

911.4230 A 0.00 13.60 Is 2 S — Limit

UV 6

Bl T-l
;
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NSRDS-NBS 1, National Standard Reference

Data System — Plan of Operation, by E. L. Brady and M. B. Wallenstein, 1964 (15 cents), SD

Catalog No. 03.48:1.

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NSRDS-NBS 28, Molten Salts: Vol. 2, Section

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from Equilibrium-Type Cells, by G. J. Janz

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NSRDS-NBS 29, Photon Cross Sections, Attenuation Coefficients, and Energy Absorption Coefficients from 10 keV to 100 GeV,

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NSRDS-NBS 30, High Temperature Properties and Decomposition of Inorganic Salts,

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NSRDS-NBS 33, Electrolytic Conductance

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NSRDS-NBS 34, Ionization Potentials and

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NSRDS-NBS 35, Atomic Energy Levels as Derived from the Analyses of Optical Spectra, Vol. I, H to 23V; Vol. II, 24 Cr to 41 Nb;

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$4.50), SD Catalog No. 03.48:35/ Vols. I, II, and III. NSRDS-NBS 36, Critical Micelle Concentrations of Aqueous Surfactant Systems, by P. Mukerjee and K. J. Mysels, 1971 ($3.75), SD

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NSRDS-NBS 37, JANAF Thermochemical

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NSRDS-NBS 38, Critical Review of Ultraviolet Photoahsorption Cross Sections

for Molecules of Astrophysical and

Aeronomic Interest, by R. D. Hudson, 1971

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NSRDS-NBS 39, Tables of Molecular Vibrational Frequencies, Consolidated Tables,

by T. Shimanouchi, 1972 (In press), SD Catalog

No. 03.48:39.

NSRDS-NBS 40, A Multiple! Table of Astrophysical Interest (Reprint of 1945 Edition), by

C. E. Moore, 1972 ($2), SD Catalog No. 03.48:40.

NSRDS-NBS 41, Crystal Structure Transformations in Binary Halides, by C. N. R.

Rao, 1972 (In press), SD Catalog No. 03.48:41.

NSRDS-NBS 42, Selected Specific Rates of

Reactions of the Solvated Electron in

Alcohols, by E. Watson, Jr., and S. Roy, 1972

(In press), SD Catalog No. 03.48:42.

NSRDS-NBS 43, Selected Specific Rates of

Reactions of Transients from Water in

Aqueous Solution, by M. Anbar, M. Bambenek,

and A. B. Ross, 1972 (In press), SD Catalog No.

03.48:43.

NSRDS-NBS 44, The Radiation Chemistry

of Gaseous Ammonia, by D. B. Peterson, 1972

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NSRDS-NBS 3. Section 6

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Selected Tables of Atomic Spectra

5. Publication Date September 1972

7. AUTHOR!S) Charlotte E. Moore«.

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ABSTRACT (A 200-word or less factual summary of most significant information. If document includes a significant

bibliography or literature survey, mention it here.)

The present publication is the sixth 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. The spectra of hydrogen and of the isotopes

deuterium and tritium are included. The form of presentation is described

17. in detail in the text to Section 1.

KEY WORDS (Alphabetical order, separated by s emicolons)

Atomic energy levels, H I, D, T; hydrogen spectra, H I, D, T; multiplet tables,

HI, D, T; spectra HI, D, T; wavelengths, hydrogen spectra H I, D, T.

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