64-Gd-157 NEA RCOM-JUN82 E.MENAPACE ET.AL.
JEF/DOC- 8 DIST-JAN09 20090105
----JEFF-311 MATERIAL 6440
-----INCIDENT NEUTRON DATA
------ENDF-6 FORMAT
*************************** JEFF-3.1.1 *************************
** **
** Original data taken from: JEFF-3.1 **
** **
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***************************** JEFF-3.1 *************************
** **
** Original data taken from: JEFF-3.0 **
** **
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***************************** JEFF-3.0 ***********************
DATA TAKEN FROM :- JENDL-3.2 (DIST-SEP90 REV-SEP93)
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* JEF-2 *
* DATA WERE TAKEN FROM JENDL-1. *
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* 8-MAR-85: Q-VALUE FOR MT=102 CORRECTED
* 23-MAR-85: DATA EXTENDED TO 20 MEV
* 22-MAR-88: CHANGE OF THE FLAG FROM SINGLE LEVEL TO MULTI LEVEL
* BREIT-WIGNER RESONANCE PARAMETERS.FOR THE SPIN OF
* L=0,RESONANCES HAVE BEEN RANDOMLY ASSIGNED BY THE
* COMPUTER CODE RNDSPIN (H. GRUPPELAAR)
* 27-APR-89: MISSING CHARGE PARTICLE PRODUCTION DATA INCLUDED
* FROM REAC-ECN-4 LIBRARY
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JEA EVAL-1977 JNDC FFP W.G.
DIST-1977
RESONANCE ENERGY REGION ( 1.0E-5EV - 215EV )
-------------------------------------------
RESONANCE PARAMETERS TAKEN FROM BNL-325(3RD).
CAPTURE WIDTH ................ 100 MILLI-EV
THERMAL CAPTURE CROSS SECTION.(BARNS)
FROM RESONANCES ........... 254500
FROM 1/V TERM ............. 0
TOTAL ..................... 254500
RESONANCE INTEGRAL(CAPTURE) .. 763 BARNS
EFFECTIVE SCATTERING RADIUS .. 4.9 FERMI
INTERMEDIATE REGION
-------------------
CAPTURE CROSS SECTION FROM 215EV TO 25.0KEV AND
ELASTIC SCATTERING CROSS SECTION FROM 215EV TO 100.0KEV
CALCULATED BY USING S0=2.30E-4 ,S1=0.40E-4 ,D-OBS=2.5EV
AND R=4.9FERMI.
FAST ENERGY REGION ( UP TO 15 MEV)
---------------------------------
OPTICAL AND STATISTICAL MODEL CALCULATIONS BY 'CASTHY'.
CAPTURE CROSS SECTION NORMALIZED TO 1600.0 MILLI-BARNS
AT 30.0 KEV.
OPTICAL POTENTIAL PARAMETERS(MEV AND FERMI)
-------------------------------------------
REAL (V) .............. 46.0-0.25*E-40*(N-Z)/A
VOLUME (WI) ........... 0.125*E-0.0004*E**2
SURFACE (WS) .......... 7.0
SPIN-ORBIT (VSO) ...... 7.0
FORM FACTOR FOR V AND WI .. WOODS-SAXON (A0=0.62)
FORM FACTOR FOR WS ........ WOODS-SAXON (B =0.35)
RADIUS FOR V,WI AND VSO ... 1.16*(A**1/3)+0.6
RADIUS FOR WS ............. 1.16*(A**1/3)+1.3
OTHER PARAMETERS
----------------
MEAN LEVEL SPACING .... 2.8 EV
MEAN CAPTURE WIDTH .... 100 MILLI-EV
NEUTRON BINDING ENERGY. 7.9307 MEV
LEVEL DENSITY PARAMETERS
(TARGET) (COMPOUND)
DENSITY PARAMETER(1/MEV).... 20.640 20.119
SPIN CUT-OFF FACTOR ........ 11.741 11.641
PAIRING ENERGY(MEV) ........ 0.970 1.700
TANGENCY POINT(MEV) ........ 4.425 5.149
NORMALIZATION FACTOR ....... 2910.36 2855.03
ADOPTED LEVELS(MEV)
-------------------
0. GROUND 3/2 -
1. 0.0545 5/2 -
2. 0.0640 5/2 +
3. 0.1158 7/2 +
4. 0.1315 7/2 -
5. 0.1810 9/2 +
6. 0.2274 9/2 -
7. 0.3460 11/2 -
8. 0.3600 13/2 +
9. 0.4250 11/2 -
10. 0.4366 5/2 -
11. 0.4772 3/2 +
12. 0.5170 7/2 -
13. 0.5270 5/2 +
14. 0.6170 9/2 -
15. 0.6390 15/2 -
16. 0.6830 3/2 +
17. 0.6850 1/2 +
18. 0.6870 3/2 +
19. 0.7000 3/2 -
20. 0.7040 1/2 -
21. 0.7210 9/2 +
22. 0.7450 3/2 -
23. 0.7510 5/2 -
24. 0.7650 7/2 -
25. 0.7910 5/2 -
26. 0.8100 3/2 -
27. 0.8130 7/2 -
28. 0.8390 5/2 -
ABOVE 0.85 MEV, TREATED AS CONTINUOUS REGION.
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