Nuclear Data Section
International Atomic Energy Agency
P.O.Box 100, A-1400 Vienna, Austria
Memo CP-D/661
Date:
To:
From:

5 August 2010
Distribution
N. Otsuka

Subject:

Draft of updated LEXFOR (IAEA-NDS-208 Rev.2010/09)

A draft of updated LEXFOR (IAEA-NDS-208 Rev.2010/09) is now available at theNRDC webpage:
http://www-nds.iaea.org/nrdc/nrdc_doc/iaea-nds-0208-201009-dra.pdf.
Participants of the EXFOR Workshop (30 August to 3 September, 2010) are asked
to look through the draft, and inform me misprints, more serious mistakes as well asquestions for discussion. I will correct the manuscript based on these feedbacks.
Major changes are based on memos, conclusions and actions, and they aresummarized in the table below. In order to simplify production of the table ofcontents, headings of some chapters are reformatted, and the all headings are collected
and sorted by page numbering in the table of contents.
Some revisions were made without memos. For example, Chapter “Covariance” isrewritten because the definition in the current version is not understandable for me.
Probably the matrix coded under the keyword COVARIANCE is not covariance matrix,
but correlation matrix. “Error Correlation” is several used, but this term is alsoquestionable for me. But I did not change them.
I do not think we need a lot of equations in LEXFOR. But some equations useful tounderstand the quantity are added (e.g., definition of spectrum averaged cross section).
Some equations in the current version are corrected and/or improved.
The original transcription proposed in Memo CP-N/81 was for keyword TITLE, but I
put the table of transcription in the chapter “Free Text” because I do not see thereason to limit this proposal to free text under TITLE.
Comparison of various notations of polarization quantities in chapter “Polarization”
was taken from N. Hoshizaki, J. Phys. Soc. Jpn. 55, Suppl. p.549 (1986). I intend
compilers may understand that we can not determine quantity codes by the notation
used in the article.
This is still a draft, and open for discussion for one month. On the basis of yourcomments, I will revised the current draft, and release the final version in September
2010.

Main Changes
Page Chapter
A.1 Absorption
A.8Author

C.1

Centre-of-MassSystem

D.1

Data Type

ChangeProcess code of photo-nuclear data
below particle emission thresholdTranslation of characters notallowed in the EXFOR format
Cross section and Rutherford ratio
as invariant quantity
Invariance of centre-of-mass energy
and incident energy per nucleon
under exchange of target andprojectile
Omission of data type code forexperimental data.
New example of derived data

D.12 Differential Data

Invariance of relative energy

F.2

Fission

F.5

Fission-NeutronSpectra

Deletion of ratio of binary to ternary
fissionCoding of average kinetic energy
and energy spectrum of fission
neutronFission neutron spectrum relative toMaxwellian distribution(moved from LEXFOR “SpectrumAverage”)
Explanation of fission fragment
production cross section
Explanation of total chain yield
derivation and definition offractional yields
Explanation of provisional mass

F.9
F11

F.12
F.13
F.14
F.14

Differential fission yield
Fission yield

F.22
F.23
F.24
F.25

Free Text(Title)
FusionG.2

General Quantity

References
CP-D/629
NRDC2010/A50
CP-N/80
NRDC2009/A45
CP-D/577
CP-D/622
NRDC2010/A50

CP-D/552
NRDC2009/C17
CP-D/582
NRDC2010/C23
NRDC2010/A50
CP-D/611
NRDC2010/C17
NRDC2010/A50
CP-D/600
NRDC2010/A50
CP-D/599
CP-D/635
NRDC2010/C20
NRDC2010/C26
CP-D/635
NRDC2010/C26
NRDC2010/A50
CP-D/589
CP-D/585

CP-D/569

CP-D/613
NRDC2010/A50
Use of SF4 and SF7 for fission yield CP-D/599
NRDC2010/C20
NRDC20010/A50
Transcription of special characters
CP-N/81and hyphenation in free text
NRDC2009/A45
New chapter
CP-D/626
NRDC2010/C29
NRDC2010/A50
Full revision
CP-D/621

G.3

Modifiers

I..2I..3

Explanation of inverse kinematics

L.1
L.2

Incident Particles(renamed fromIncident-ProjectileEnergy)
Independent
Variables
Light-Nuclei
Reaction (Z<6)

N.4

Nuclear Quantities

Explanation of level density coding

P.1

Partial Reactions

P.7

Polarization

P.15
P.16

Production andEmission Cross
Sections
Reaction
Mechanisms

Definition of partial reaction and
REACTION example
Distinction between tensor
analyzing power and initial statespin-correlation parameter
Use of new modifier RAB

I.7

R.4

R.6

Reference

S.1

SampleS.2

Scattering

Heading of independent variable forreaction combination
Coding of intermediate state
unstable against particle-decay

Deletion of “fusion, fast fission, anddeep inelastic scattering”.
(Moved to a new chapter “Fusion”)
Articles compiled under
REFERNCE
Omission of TMP (data at the room
temperature, thermal scattering)
Definition of elastic and inelasticscattering
Elastic scattering for CPND

S.6
S. 8

S.13

SecondaryParticles
Single-Level
Resonance
Parameters
Spectrum Average

S.15
S.18
S.19

StatusPresence of EN-SEC

NRDC2010/C22
NRDC2010/A50
CP-D/622
NRDC2010/A50

CP-D/606
CP-C/389
NRDC2010/C28
NRDC2010/A56
CP-D/643
CP-D/512revNRDC2008C/19
CP-D/587
CP-D/520

CP-D/546
NRDC2009/C7
NRDC2009/A40
CP-D/626
NRDC2010/C29
NRDC2010/A50
CP-D/565 (Rev.)
NRDC2009/C10
CP-D/574 (Rev.)
CP-D/607
NRDC2010/C24
NRDC2010/A50
CP-D/521
NRDC2008/A60
CP-D/587

Resonance parameters outside the
EXFOR compilation scope

CP-D/632

Definition of Bremsstrahlung
spectrum average cross section
Use of kT without conversion tomean energy
Difference between TABLE andAPPRVD.
Source of numerical data

CP-E/117
NRDC2007/C10
NRDC2009/C13
CP-D/573
NRDC2008/A34
NRDC2009/C44C-4/177

T.8

Thick- and ThinTarget yield

Difference between yield andmultiplicity

T.13

Total

Total for CPND
Total for PhND

T.14
T.15
T.16

Transmission andReaction Yield

New chapter

NRDC2010/C27
NRDC2010/A47
CP-D/619
NRDC2010/C21
NRDC2010/A50
CP-D/521
NRDC2008/A60
CP-D/629
NRDC2010/A50
CP-D/584

Note that 2008NRDC/C14 (“No reply from author”) was also concluded in
2005NRDC/C11 and implemented in the current manual.
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