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71-Lu-176 ORNL,BNW EVAL-MAR98 R.Q. WRIGHT, LEONARD-STEWART
DIST-JAN09 20090105
----JEFF-311 MATERIAL 7128 REVISION 1
-----INCIDENT NEUTRON DATA
------ENDF-6 FORMAT
*************************** JEFF-3.1.1 *************************
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** Original data taken from: JEFF-3.1 **
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***************************** JEFF-3.1 *************************
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** Original data taken from: ENDF/B-VI.8 **
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ENDF/B-VI MOD 1 Revision, March 1998, R.Q. Wright (ORNL)
This revision contains the following changes relative to the
1967 evaluation:
MF= 2 RESONANCE PARAMETERS
RESOLVED RESONANCE RANGE 1.0E-5 to 102.0 eV (revised)
The resolved resonance parameters are taken from Mughabghab
[16]; the MLBW formalism is used.
UNRESOLVED RESONANCE RANGE is revised - 102 eV to 10 keV.
The scattering radius, R = 7.6 fm.
MF=3 SMOOTH CROSS SECTIONS
Total, elastic, and capture are set to zero below 10 keV.
The capture cross-section (MT = 102) is revised for the 10 keV
to 20 MeV energy range, based on data of Beer [17].
Scattering cross-section is revised to reflect the change in
the capture and to keep the total cross-section unchanged.
Table 1. Lu-176 Average Capture (mb)
Energy (keV) Evaluation Beer [17]
Flat wt.
3 - 4 5478 5360
4 - 6 4330 4272
6 - 8 3470 3450
8 -10 2975 2925
10 -15 2424 2378
15 -20 1948 1914
20 -30 1594 1597
30 -40 1348 1348
40 -60 1154 1147
60 -80 998.1 985
80-100 914.0 907
100-150 828.4 832
150-200 750.6 764
200-300 670.0 663
300-400 583.2 575
400-500 506.9 512
500-600 420.5 420
600-700 353.9 351
2200 m/s cross sections (barns)
Evaluation Mughabghab [16]
Total 2100.34 2093
Elastic 2.51 3.1 +/- 0.8
Capture 2097.83 2090 +/- 70
Capture resonance integral (barns)
Evaluation Mughabghab [16]
921.60 1092 +/- 40
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ENDF/B-VI MOD 0, February 1990 (NNDC)
ENDF/B-V material converted to ENDF-6 format by NNDC.
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ENDF/B-V Evaluation, MAT 1033, June 1967, B.R. Leonard and
K.B. Stewart (BNW)
THIS FILE TRANSFERED FROM ENDF/B-III WITH NO MODIFICATIONS.
DATA MODIFIED JUNE,1970 TO CONFORM TO ENDF/B-II FORMATS
MF= 1 GENERAL INFORMATION
MT=451 Atomic mass=175.94 [2] I=7 [3]
MT=453 Radioactive decay for mt=17,102,107 [3]
MF= 2 RESONANCE PARAMETERS
RESOLVED REGION defined from 0.88 eV to 48.0 eV
Resonance parameters from Hughes [4] and Roberge [5] (0.142
eV). Potential scatting from Atoji [6].
UNRESOLVED REGION defined from 48 eV to 10 keV
s-wave parameters calculated from resolved [1].
p-wave parameters from S1=1.4E-4 [7].
No smooth cross sections given for resonance region.
MF= 3 SMOOTH CROSS SECTIONS
MT= 1 Total 0.0001 eV to 0.88 eV calculated by UNICORN [8]
for 0 K using parameters of File 2.
10 keV to 2.5 MeV total similar to erbium and hafnium
2.5 to 15 MeV eye fit to data of Foster [9] elemental Lu.
15 to 20 MeV Optical-Model calculations [1] ABACUS-2 [10]
MT= 2 Elastic scattering 0.0001 eV to 0.88 eV from UNICORN
calculation [1]. No Bragg effects.
10 keV to 20 MeV by subtraction of all others from total.
MT= 4 Inelastic scattering from ABACUS calculation [1].
MT= 16,17 Thresholds to 20 MeV calculated [1] by procedure of
Pearlstein [11].
MT=102 Capture 0.0001 eV to 0.88 eV from UNICORN calculation
[1].
10 keV to 20 MeV based on 1.58 times 175Lu as indicated
by data of Macklin [12] from 30 to 200 keV.
MT=103,107 n,p and n,alpha cross sections taken as equal to
those of 175Lu (ENDF/B).
MF= 4 ANGULAR DISTRIBUTIONS (Legendre polynomials)
MT= 2 20x20 transformation matrix c.m.-lab calculated [1]
by CHAD. 19 c.m. Legendre coefficients 10 keV to 20 MeV
calculated from distributions of ABACUS by modified version
of CHAD [1]. No compound-elastic for E > 5 MeV.
MF= 5 SECONDARY ENERGY DISTRIBUTIONS
MT= 4 Inelastic scattering threshold to 20 MeV to 4 levels
from [14] plus 4 assumed levels [1] from Hausser-Feshback
ABACUS calculation [1].
2 to 20 MeV nuclear temperatures for Maxwellian [15].
MT= 16,17 Nuclear temperatures for Maxwellian [15] thresholds
to 20 MeV.
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REFERENCES
1. B.R. Leonard and K.B. Stewart, PNL (June 1967).
2. F. Everling et al., Nucl.Phys. 18, 529 (1960)
3. D.T. Goldman, Chart of the Nuclides, June 1964
4. D.J. Hughes et al., BNL-325, Second Edition, Suppl.1 (1960)
5. J.P. Roberge and V.L. Sailor, Nucl.Sci.Eng. 7, 502 (1960)
6. M. Atoji, Phys.Rev. 121, 610 (1961)
7. H.W. Newson, Neutron Cross Section Technology, Proc. Conf.,
Washington, DC, March 1966 (AEC Tecnical Information Div.,
1966) p. 562
8. J.M. Otter, report NAA-SR-11980, Vol.6 (1966)
9. D.G. Foster Jr. and D.W. Glasgow, Phys.Rev.C 3, 576 (1971)
10. E.H. Auerbach, report BNL-6562 (1962)
11. S. Pearlstein, Nucl.Sci.Eng. 23, 238 (1965)
12. R.L. Macklin and J.H. Gibbons, Phys.Rev. 159, 1007 (1967)
13. R.F. Berland, report NAA-SR-11231 (1965)
14. Nulcear Data Sheets, 6-6-34 (Jan. 1965)
15. S. Weinberg and E. Wigner, The Physical Theory of Nuclear
Chain Reactions (U. of Chicago Press, 1958)
16. S.F. Mughabghab, Neutron Cross Sections, Vol. 1, Neutron
Resonance Parameters and Thermal Cross Sections (Academic
Press, 1984)
17. H. Beer et al., Phys.Rev. C 30, 464 (1984)
See also EXFOR 12880.004
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