RUSSIA NUCLEAR DATA CENTER - RNDC
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MEMO 4C-4/172
DATE:
TO:
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Subject:

18 September 2008
Distribution
M.Mikhaylyukova, V.Pronyaev
Working paper to NRDC2008

EXFOR entries corrections: important points
1. Find all References and read.
As REFERENCE – give only publications, which contain data for this ENTRY.
Other references (containing details of experiment, method of analysis and so on) have to
be moved to REL-REF lines.
If the first author of second reference (or any subsequent references) is different fromthe first author of first (main) reference, then this should be mentioned in the free text ofthe lines with these references.

2. Check data in Tables and in text, compare with data for ALL Subentries of Entry(visually and by plotting as graphs).

3. Check data at Figures of publication, their correspondence to Tables and EXFOR Entrydata.

4. Search for duplications in EXFOR database. It is very useful to make Quick Plot fromEXFOR database and evaluated libraries by software developed by Victor Zerkin andcompare data. Large difference with data from other entries or evaluations may show also,that used reaction code is wrong (e.g. “inelastic collision” used by authors does not mean
inelastic scattering cross section, but non-elastic cross section, etc.)

5. Old data (before 1976 year) could be checked against data published in UCRL-50400.
Careful analysis of data was done by R.J.Howerton, D.E.Cullen, M.H.NacGregor andS.T.Perkins, when Livermore Evaluated Data Library was prepared. There are several
volumes, where experimental and evaluated data are presented at Figures.
Data from many journals, reports, even private communication are presented and could
be find using author name or reference or reaction.

6. Check of physical meaning of data. The questions should be answered:What was really measured (primarily measured quantity)?
How was done (if done) the normalization of the cross sections, which standard crosssection or monitor reaction was used?
It is very useful to communicate with evaluators and physicists. Any questions anddiscussions are helpful. Again it’s useful to make Quick Plot to compare with other data
for the same reaction. These plots can be sent to authors for explanations if they differ too
much from other data in the EXFOR database.

7. Ask authors (if possible) any questions about found disagreements and possible
misprints through e-mail. Often authors answer more readily at the questions aboutpossible misprints, than on request at their data.

8. Use NuDat retrievals to understand decay properties and decay radiation actually used
(if used) in measurements.

9. Check also ERRATA or CORRIGENDUM lists published usually in the last issue ofthe journal of the year of publication.

10. Use CHEX code to find errors.
11. Use Spellcheckers to correct free text and remove simple misprints.
Proposals:
To prepare a short Guideline for EXFOR compilers on the base of these working
paper with adding comments and other proposals worked out at the meeting.
To recommend all compilers to use this Guideline as checklist at correction of oldEntries and at compilation of new ones.