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Last updated on 1 July 2008

 

  • Feedback on the Neutron Files
  • Feedback on the Thermal Scattering Files
  • Feedback on the Radioactive Decay Data Files
  • Feedback on the Neutron Fission Yields
  • Feedback on the Activation Files

    • The status column identify the feedback status:
  • Submitted: Feedbacks submitted to the NEA and not yet revised by the Working Group
  • Accepted: Feedback has been accepted by the Working Group
  • Updated: A new updated file is available

    • *: Z-sym-A and state if not ground, or compound
    **: File name as in the official CD-ROM

    Feedback on the Neutron Files

    Nuclide* File name** From Date Comment Status
    11-Na- 23 JEFF31N1125_0.ASC D. Brown 28 November 2005 MF=4.The data is given in the wrong frame as LCT = 2. Submitted
    12-Mg- 24,25,26 JEFF31N1225(28,31)_0.ASC W. Haeck 14 June 2006 Large discrepencies compare with the elemental version in JEFF3.0 (JEF/DOC-1125 and JEF/DOC-1141). Major differences for angular distributions in different levels of innelastic scattering (MT 51 and 52). Submitted
    17-Cl- 35 JEFF31N1725_0.ASC Lopez-Aldama 21 June 2005 File 14 (MF=14) the NK value should be equal to the NK in file 12 and 13 JEFF31N1725_1.ASC). Accepted and updated
    17-Cl- 37 JEFF31N1731_0.ASC NEA 3 June 2005 The number of lines in MF3, MT1,MT2 and MT102 is wrong in the MF1, MT451 list. The number of lines should be 4189, instead of 2043. JEFF31N1731_0.ASC). Accepted and updated on final version
    20-Ca- 46 JEFF31N2043_0.ASC V. Sinitsa and M. Pescarini 24 March 2006 The total cross section (MF3,MT1) below 1 keV is zero, while the capture cross section is not zero. The total (MT1) is not the sum of the cross sections. M. Pescarini is proposing the following file: JEFF31N2043_2.ASC. The file has been proposed to JEFF3.2, see the JEFF3.2-Beta JEFF-3.2-beta page. accepted
    22-Ti- 50 JEFF31N2237_0.ASC E. Dorval 31 October 2006 Neutron capture cross section data, MT=102, is wrong. It is not from isotope Ti-50. but from natural Titanium. Submitted
    22-Ti- all Ti isotopes D. Brown 28 November 2005 MF=6. In MT102 MF6 (n,gamma), the energy-angle distributions for the outgoing gammas from the continuum. The interpolation table has all E' set to 0 for all entries. Submitted
    22-Ti-46,49 C. Dean 12 March 2007 Elastic cross section negative above 18.797MeV Revision is needed before updating JEFF3.2 Submitted
    24-Cr- 52 JEFF31N2431_0.ASC O. Bouland, M. Mattes 31 January 2006 Corrections on MF=4, MT=2: 1/ The file can not be processed by GROUPR of NJOY because of the very high number of energy points (23825 instead of max 2000 for the ENDF format)--> number of points decreased down to 1394. 2/ The GROUPR module of NJOY can not process the section MF4/MT2 because of redundant energy points in the file. This is due to the option 'conversion of data fields to standard form' in the STANEF code which forces the file MF4/MT2 output to adopt the ENDF format with 6 significant digits, rather than 7, for the energy values. --> section MF4/MT2 recreated correctly. JEFF31TNN2431_1.ASC Accepted
    26-Fe- 56 JEFF31N2631_0.ASC D. Brown 28 November 2005 There is a mismatch between the level excitations in the MF3 data and the MF12 data. The file proposed is JEFF31N2631_1.ASC Accepted
    26-Fe- 56 JEFF31N2631_0.ASC O. Cabellos 20 November 2006 The processing of the file for radiation damage calculations MT=444 has a discotinuity above 20 MeV. Is the discontinuity caused by the lack of recoil information above 20 MeV? To be discussed within the Working Group
    26-Fe- 57 JEFF31N2634_0.ASC A. Trkov 26 August 2005 Inconsistency between the total MT1 and the sum of the partials. Submitted
    26-Fe- 58 JEFF31N2637_0.ASC A. Trkov 4 May 2006 Correction total and non-elastic cross section JEFF31TN2637_1.ASC. Accepted
    27-Co- 58 JEFF31N2722_0.ASC O. Cabellos 4 October 2005 Capture ,(n,gamma),discontinuity for the resonances Submitted
    42-Mo- 92 JEFF31N4225_0.ASC O. Kalchenko 18 June 2008 Processing with NJOY 99.81 (and 99.90) – the code stops immediately. Evaluation is from JENDL 3.2 (also exhibits the same effect). Submitted
    42-Mo- 95 JEFF31N4234_0.ASC D. Brown 5 November 2006 Flag on first 2 tables of legendre coeffs set to 0, it should be set to 1 The file proposed is JEFF31N4234_1.ASC Accepted
    42-Mo- 98 JEFF31N4243_0.ASC O. Kalchenko 18 June 2008 Processing with NJOY 99.81 (and 99.90) – the code stops immediately. Evaluation is from JENDL 3.2 (also exhibits the same effect). The file from JENDL 3.0 library is valid for MCNP operation. Submitted
    52-Te-127m JEFF31N5247_0.ASC F. Leszczynski 7 February 2007 Huge difference observed in thermal capture value: JEFF-3.1=JEF-2,.2= 9.4 barn, ENDF/B-VII=JENDL3.3: 3380 barn Proposed
    63-Eu-151 JEFF31N6325_0.ASC D. Brown 28 November 2005 MF=12. Energies out of order. Submitted
    77-Ir-191 JEFF31N7725_0.ASC Lopez-Aldama 21 June 2005 File 14 (MF=14) the NK value should be equal to the NK in file 12 and 13 JEFF31N7725_1.ASC). Accepted and updated
    77-Ir-191 JEFF31N7725_1.ASC D. Brown 5 November 2006 File 12 (MF=12) The number of gammas is incorrect, it is listed as 153, but should be 152. The file proposed is: JEFF31N7725_2.ASC). Accepted
    77-Ir-191 JEFF31N7725_2.ASC M. Becker 30 June 2008 Processing JEFF31N7725_2.ASC with NJOY99.259 results in a reading error by module MODER. Changing NK equal 152 back to 153 makes the file readable by NJOY, but this would be contrary to the change of D. Brown. Submitted
    77-Ir-193 JEFF31N7731_0.ASC Lopez-Aldama 21 June 2005 File 14 (MF=14) the NK value should be equal to the NK in file 12 and 13 JEFF31N7731_1.ASC). Accepted and updated
    77-Ir-193 JEFF31N7731_0.ASC D. Brown 5 November 2006 File 12:1) MF=12, MT=52 Added file so that can correctly deexcite higher levels. It is more or less a copy of the MT=51 file but the level energy matches that in MF=3, MT=52.
    2) MF=12, MT=102, Lowered number of lines specidfied in header by one to match the actual number in the file.
    3) MF=1, MT=451 Update to reflect the addition of the new MF=12,MT=52 file.
    The file proposed is JEFF31N7731_2.ASC)    		 Accepted
    77-Ir-193 JEFF31N7731_2.ASC M. Becker 30 June 2008 Processing JEFF31N7731_2.ASC with NJOY99.259 results in "***error in moder*** should have found send card". This error does not appear in JEFF31N7731_1.ASC. Submitted
    81-Tl JEFF31N8100_0.ASC E. Dupont and O. Cabellos 13 November 2006 Different results using NJOY and PREPRO, MF=3 MT=102. A change in the interpolation law ( from lin-lin to log-log) will improve the results (PREPRO treatement) . E. Dupont have proposed the following file JEFF31N8100_1.ASC and the documentation of the modifications proposed memo_natTl.pdf Submitted
    83-Bi-209 JEFF31N8325_0.ASC W. Haeck 14 June 2006 Problem in the secondary photon distribution mt=849, continium spectrum at incidente energy equal to 200ev is zero. Haeck proposed to modify the existing zero values in the continium spectra for the incident energy points 1e-5eV, 0.0253 eV and 200 eV a small value such as 1e-25. The proposed file is: JEFF31N8325_1.ASC Accepted
    92-U-233 JEFF31N9222_0.ASC Dean 24 May 2005 The decay constant for the 4th time group is a factor 10 too low 1.330420-2 instead of 1.330420-1 JEFF31N9222_1.ASC). Accepted and updated on final version
    92-U-233 JEFF31N9222_1.ASC J-C Sublet 31 March 2008 MF-5 MT-16,17,91 Q-value, threshold and spectra modified MF-5 MT-20,21,38 threshold spectra reshuffled. A strict interpretation of the original spectra would lead to the generation of too many neutron below 0.2 eV "U-234, U-233 energy distribution of secondary particles" jefdoc-1217 JEFF31N9222_2.ASC). submitted
    92-U-233 JEFF31N9222_2.ASC J-C Sublet 16 May 2008 Correction of the JEFF31N9222_2.ASC file so that it includes previous correction (JEFF31N9222_1.ASC, see above) by C Dean (the decay constant for the 4th time group is a factor 10 too low 1.330420-2 instead of 1.330420-1). JEFF31N9222_3.ASC). submitted
    92-U-234 JEFF31N9225_0.ASC B. Naranjo and NEA 28 June 2005 The number of lines in MF2, MT151 is 489. The value 498 is wrongly stated in MF1, MT451. JEFF31N9225_0.ASC). Accepted and updated on final version
    92-U-234 JEFF31N9225_0.ASC J-C Sublet 31 March 2008 MF-5 MT-16,17,91 Q-value, threshold and spectra modified MF-5 MT-20,21,38 threshold spectra reshuffled. A strict interpretation of the original spectra would lead to the generation of too many neutron below 0.2 eV "U-234, U-233 energy distribution of secondary particles" jefdoc-1217 JEFF31N9225_1.ASC). submitted
    94-Pu-239 JEFF31N9437_0.ASC Dupont 14 June 2005 Upper limit unresolved resonance range, the evaluation selected is: JEFF31N9437_3.ASC a report to summarized the proposals). Submitted
    94-Pu-239 JEFF31N9437_0.ASC Dean 09 June 2005 Upper limit unresolved resonance range (two solutions proposed by C. Dean for the evaluators to decide between, based on validation and comparisons) JEFF31N9437_1.ASC and JEFF31N9437_2.ASC). Submitted
    94-Pu-239 JEFF31N9437_0.ASC Dean 01 Sept 2008 There are non ascending energy points in the prompt and total NU-BAR tabulations for Pu-239. The JEFF3.1 file has multiple points at 6.50000E+02, 5.65500E+06 and 1.26520E+07. In all cases the same value of Nu is used. Note, these points were already present in JEFF-3.0 Submitted
    94-Pu-240 JEFF31N9440_0.ASC D. Brown 28 November 2005 MF=4.The data is given in the wrong frame as LCT = 2. Submitted
    95-Am-241 JEFF31N9543_0.ASC O. Bouland 16 November 2006 A/During the revision of the resolved resonance parameters for JEFF31, the fission widths of the 4th energy lowest resonances were not updated accordingly to the new neutron width values. This is now done with preserving the capture trends.
    B/ For JEFF31, the un-assigned spins of the old Froehner's evaluation were assigned on statistical distribution laws. Following the new branching ratio information and the probable spins (see JEF/DOC-1086 , the spins of the bound and of the 4th lowest resonances were fixed.
    C/ In the Branching Ratio to AM241m file (MF=9, MT=102), the LFS flag (Level number of the final state) was erroneously set to 2 which corresponds to the second metastable state and not the the second excited state. LFS corrected to 1.
    A new file including the corrections addressed above will be submited to the NEA    		 Submitted

    Feedback on the Thermal Scattering Files

    Nuclide* File name** From Date Comment Status
    H(ZrH) JEFF31TS0007_0.ASC NEA 30 June 2005 Format error: The ZA number, 1.007000+3 changed to 1.070000+2 in MF/MT 1/451,7/2 and 7/4. Number of lines in MF/MT 1/451 corrected to 27 lines and for 7/4 corrected to 43116 lines JEFF31TS0007_1.ASC). Accepted and updated on JEFF Web page
    H(CaH2) JEFF31TS0008_0.ASC NEA 30 June 2005 Format error: The ZA number, 1.001000+3 changed to 1.080000+2 in MF/MT 1/451, 7/2 and 7/4, and number of lines for 1/451 corrected to 73 lines and for 7/4 corrected to 16210 lines JEFF31TS0008_1.ASC). Accepted and updated on JEFF Web page
    D(D2O) JEFF31TS0011_0.ASC NEA 30 June 2005 Format error: Number of lines in 1/451 corrected to 25 lines and for 7/4 corrected to 69538 lines JEFF31TS0011_1.ASC). Accepted and updated on JEFF Web page
    Ca(CaH2) JEFF31TS0059_0.ASC NEA 30 June 2005 Format error: The ZA number, 2.000000+3 changed to 1.590000+2 in MF/MT 1/451, 7/2 and 7/4 JEFF31TS0059_1.ASC). Accepted and updated on JEFF web page

    Feedback on the Radioactive Decay Data Files

    Nuclide* File name** From Date Comment Status
    92-U-238 JEFF31RDD.ASC A. Nichols 4 July 2005 ERROR: U-238 BF(sf) should be 5.46E-7. The original value of 5.46E-5 is an error, and was an aberration at the time of the re-evaluation of the decay data in January 2000. Accepted.Updated on the JEFF3.1.1 library
    various above Z=70 JEFF31RDD.ASC O. Cabellos and M. Kellett 20 October 2005 Wrong natural abundance data for nuclei above Z=70 added as the final line in the comments section: MF=1, MT=451. Accepted.Updated on the JEFF3.1.1 library
    89-Sr JEFF31RDD.ASC O. Bersillon 2 January 2006 The uncertainty on the mean beta energy for the 89-Sr (MAT=964) decay given in the JEFF-3.1 RDD (233.8 keV) is not correct. It should be 1.0 keV! Accepted.Updated on the JEFF3.1.1 library
    95-Am-242 JEFF31RDD.ASC T. D. Huynh 3 March 2006 Am-242M and Am-242N (Mat. 3607 and 3608) have both state numbers LIS=2 while the isomeric state is LISO=1 and 2 respectively. Accepted.Updated on the JEFF3.1.1 library
    JEFF31RDD.ASC Walter Josephson 19 September 2007 AWR values in JEFF-3.1 RDD converted from NUBASE atomic masses are innacurate.This issue will be addressed in a future update. Accepted.Updated on the JEFF3.1.1 library

    Feedback on the Neutron induced Fission Yields Data Files

    Nuclide* File name** From Date Comment Status
    92-U-235 JEFF31NFY.ASC Mills and Vidal 1 November 2007 Incorrect value in file MF=8. Vidal reported an inconsistency for Cs137 between the cumulative and independent yields for the thermal fission of U235.The reason was found to be an incorrect independent yield of I137. The value in the file was 2.9508E-2 instead of 3.0976E-2. This was the result of an incorrect unit conversion in the modification of UKFY3.6 to produce UKFY3.6A. A corrected file is proposed JEFF31NFY-U235-modified.ASC Proposed

    Feedback on the Activation Files

    Nuclide* File name** From Date Comment Status
    Many JEFF31A.ASC A. Konobeyev 16 August 2007 Product nuclei (ZAP) incorrect, E.G. Ni-56 (MAT=2819), MF=10, MT=112 Submitted
    (Kr-78, Kr-80, Kr-82, Zr-86, Te-120, Xe-133, Ce-134, Pm-151, Os-191, Pt-194, Pt-196, Pt-198, Tl-205, Np-239, Es-255) JEFF31A.ASC A. Konobeyev 14 August 2007 Interpolation ranges are incorrect for MF=9 MT=102 Submitted
    41-Nb-93 JEFF31A.ASC A. Konobeyev 15 Nov 2006 MF=10: Single measurement of the cross-section available at 17.01 - 19.21 MeV [Qaim et al, Phys.Rev C34 (1986) pp.489-492] seems to be ignored in the evaluation. The difference between evaluated cross-section and measured data is large. The evaluated cross-section could be easy corrected, if no doubts are found in Qaim et al measurements. Submitted
    Many (mainly fissile isotopes.) JEFF31A.ASC A. Rineiski 30 Jan 2006 Q-values for (n,f) reactions (MF3,MT18) are wrong for some isotopes, e.g. Pu-240. Submitted

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