Nuclear Data Section
International Atomic Energy Agency
P.O.Box 100, A-1400 Vienna, Austria
Memo CP-D/730
Date:
To:
From:

17 February 2012
Distribution
N. Otsuka

Subject:
Reference:

Spectrum averaged cross section at temperature kT
WP2009-31

When a spectrum averaged cross section is given at a temperature kT, the temperaturemust be coded under the heading KT (Conclusion 13 of the 2009 NRDC Meeting).
There are data sets coded with (3/2) kT under the heading EN-MEAN. In such subentries,the heading EN-MEAN must be changed to KT and values must be corrected accordingly.
All affected subentries are listed below.
Subentry
22371.004
22386.014-019
22388.014-019

22419.002
22436.003

22448.002
22456.004
22485.002
22485.005
22498.014
22498.015-019
22669.003
22670.002-014
22692.002-003
22692.004
22801.002,007
22804.002
22813.014-019
22815.005-007
22816.008-010
22816.011
22829.002-004
22829.005-008
22829.009-010

Additional remarks

REFERENCE : KFK-5967 -> FZKA-5967,
also main reference must be J,PR/C,57,391,1998
REACTION: Remove FCT in SF8REFERENCE: INDC(EUR)-039 -> INDC(EUR)-031
The entry must be updated with the main reference
J,NP/A,621,262,1997.
A similar value is seen in22485.002.
REACTION: Remove FCT in SF8Correct DATA values. STATUS: Table 7 -> Table VIIISTATUS: Table 7 -> Table VIII
REACTION: Remove FCT in SF8
DATA: 2.47 mb -> 2.37 mb @ kT=100 keV

REACTION: Remove FCT in SF8Delete. Not data measured in the experiment.

22841.002
22846.006
22846.007-010
22852.003
22908.002-005
22908.006
40960.001
40960.073
40960.074
40960.075-080
40960.081
40960.082
41148.
013,016,019,
022,025,028

Keep only 30 keV and 500 keV data?
Delete. Not data measured in the experiment.

DATA: 2.93 mb -> 2.91 mb @ kT=5 keV
REFERENCE: Add J,SNP,50,375,1989
DATA: 140 mb -> 149 mb
DATA: 40.4 mb -> 40 mb
SF9: CALC -> DERIV?
(MACS derived from unresolved resonance parameters)

Additional remarks
1. Some compilers have applied MXW/FCT or FCT/MXW in REACTION SF8 for
MACS. This FCT is unnecessary and its deletion is also asked in the table
when necessary.
2. Experimental spectrum averaged cross sections are often complemented bymodel and/or other experimental results to extract MACS coded in EXFOR(e.g., [1]). Because we have not discussed the most straightforward derivationof experimental MACS, I do not discuss when we should apply DERIV in SF9in this memo. Further discussion and clarification would be necessary.
3. When cross sections averaged for quasi-Maxwellian (e.g., kT=25 keV datafrom KFK) are given, SPA is more suitable than MXW. The compilers have tocheck if SPA is more suitable when they perform corrections of thesesubentries.
Reference[1] K. Wisshak et al., Phys. Rev. C42(1990)1731 Section VII.

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