8-O - 16 JNDC EVAL-DEC83 Y.KANDA(KYU) T.MURATA(NAIG)+
JAERI-M 90-012 DIST-SEP89 REV2-DEC93
----JENDL-3.2 MATERIAL 825
-----INCIDENT NEUTRON DATA
------ENDF-6 FORMAT
HISTORY
83-12 NEW EVALUATION FOR JENDL-3
SUB-WORKING GROUP ON EVALUATION OF O-16,
WORKING GROUP ON NUCLEAR DATA FOR FUSION,
JAPANESE NUCLEAR DATA COMMITTEE
IN CHARGE
SIG-T Y.NAKAJIMA K.SHIBATA(JAERI)
SIG-EL T.MURATA(NAIG)
SIG-IN S.TANAKA(JAERI)
CAPTURE T.ASAMI(JAERI)
(N,2N),(N,P),(N,D),(N,ALPHA) Y.KANDA(KYU)
COMPILATION
EVALUATED DATA WERE COMPILED BY K.SHIBATA.
84-07 DATA OF MF=4 (MT=16,91) WERE REVISED.
COMMENT WAS ALSO MODIFIED.
87-01 DATA OF MF=3 (MT=51-64,67), MF=4 (MT=51-55) AND MF=5(MT=16)
WERE MODIFIED (S.CHIBA, JAERI). COMMENT WAS ALSO MODIFIED.
90-10 MF=5 (EXCEPT MT=91), MF=12, MT=102 MODIFIED.
93-12 CAPTURE AND GAMMA PRODUCTION CROSS SECTIONS WERE MODIFIED.
***** MODIFIED PARTS FOR JENDL-3.2 ******************************
(3,102) REEVALUATED BY K. SHIBATA.
(3,2),(3,3) RECALCULATED
(12,102) MODIFIED DUE TO ENERGY CONSERVATION
(12,51;57;62) 510 KEV GAMMAS INCORPORATED
(13,3) REEVALUATED BY T. ASAMI (DE)
******************************************************************
MF=1 GENERAL INFORMATION
MT=451 DESCRIPTIVE DATA
MF=2 RESONANCE PARAMETERS
MT=151 SCATTERING RADIUS ONLY.
MF=3 CROSS SECTIONS
CALCULATED 2200M/S CROSS SECTIONS AND RES. INTEGRALS
2200M/S (B) RES. INTEG. (B)
TOTAL 3.780 -
ELASTIC 3.780 -
CAPTURE 1.9E-4 6.33E-4
MT=1 SIG-T
BELOW 3 MEV, THE TOTAL CROSS SECTION WAS CALCULATED
WITH THE R-MATRIX THEORY.
ABOVE 3 MEV, BASED ON THE EXPERIMENTAL DATA OF
CIERJACKS ET AL./1/.
MT=2 SIG-EL
BELOW 3 MEV, CALCULATED WITH THE R-MATRIX THEORY.
ABOVE 3 MEV, THE ELASTIC SCATTERING CROSS SECTION WAS
OBTAINED BY SUBTRACTING THE REACTION CROSS SECTIONS FROM
THE TOTAL CROSS SECTION.
MT=3 NON-ELASTIC
SUM OF MT=4, 16, 102, 103, 104 AND 107.
MT=4 TOTAL INELASTIC
SUM OF MT=51 TO 91.
MT=16 (N,2N)
BASED ON EXPERIMENTAL DATA/2/.
MT=51-79,91 SIG-IN
SHAPE OF THE EXCITATION FUNCTIONS WAS CALCULATED WITH
THE STATISTICAL MODEL.
THE OPTICAL POTENTIAL PARAMETERS ARE THE FOLLOWING:
V = 48.25-0.053E, WS = 3.0 + 0.25E, VSO = 5.5 (MEV)
R = 1.255 , RS = 1.352 , RSO = 1.15 (FM)
A = 0.536 , B = 0.205 , ASO = 0.50 (FM).
LEVEL SCHEME
NO ENERGY(MEV) SPIN-PARITY
G.S. 0.0 0+
1 6.0490 0+
2 6.1300 3-
3 6.9170 2+
4 7.1169 1-
5 8.8720 2-
6 9.6300 1-
7 9.8470 2+
8 10.360 4+
9 10.960 0-
10 11.080 3+
11 11.100 4+
12 11.520 2+
13 11.600 3-
14 12.050 0+
15 12.440 1-
16 12.530 2-
17 12.800 0-
18 12.970 2-
19 13.020 2+
20 13.090 1-
21 13.120 3-
22 13.260 3-
23 13.660 1+
24 13.870 4+
25 13.980 2-
26 14.030 0+
27 14.100 3-
28 14.300 4+
29 14.400 5+
CONTINUUM LEVELS WERE ASSUMED ABOVE 14.4 MEV.
CONSTANT TEMPERATURE OF 3.4 MEV WAS USED.
FOR THE INELASTIC SCATTERING TO THE SECOND AND THIRD
LEVELS, THE (N,N')GAMMA DATA OF NORDBORG ET AL./3/ AND
LUNDBERG ET AL./4/ BELOW 10MEV.
FOR MT=51 TO 55, THE 14 MEV CROSS SECTIONS WERE
NORMALIZED TO THE EXPERIMENTAL DATA/5/-/8/.
CROSS SECTIONS FOR MT=56-64 AND 67 WERE NORMALIZED TO
REPRODUCE THE DDX DATA AT 14 MEV/8/,/9/.
MT=102 CAPTURE
1/V CURVE NORMALIZED TO THE RECOMMENDED VALUE IN THE
4TH EDITION OF BNL-325 /10/ AT 0.0253 EV.
ABOVE 100 EV, P-WAVE CAPTURE WAS CONSIDERED./28/
MT=103 (N,P)
BASED ON EXPERIMENTAL DATA/11/-/14/.
MT=104 (N,D)
BASED ON THE EVALUATION OF FOSTER, JR. AND YOUNG /15/.
MT=107 (N,ALPHA)
BASED ON EXPERIMENTAL DATA/3/,/16/-/21/.
MT=251 MU-BAR
CALCULATED FROM ANGULAR DISTRIBUTIONS IN MF=4.
MF=4 ANGULAR DISTRIBUTIONS OF SECONDARY NEUTRONS
MT=2
10E-5 EV TO 3 MEV R-MATRIX CALCULATION
3 MEV TO 5 MEV BASED ON THE EXPERIMENTAL DATA OF
LISTER AND SAYRES /22/.
5 MEV TO 9 MEV MULTI-LEVEL FORMULA/23/.
9 MEV TO 15 MEV BASED ON THE EXPERIMENTAL DATA OF
GLENDINNING ET AL./24/
15 MEV TO 20 MEV CALCULATED WITH THE SPHERICAL
OPTICAL MODEL. THE POTENTIAL
PARAMETERS ARE THE SAME AS THOSE
GIVEN IN SIG-IN.
MT=16
ASSUMED TO BE ISOTROPIC IN THE LABORATORY SYSTEM.
MT=51-79
CALCULATED WITH THE STATISTICAL MODEL.
FOR MT=51, 52 AND 55, EXPERIMENTAL DATA/8/ AT 14.2 MEV.
FOR MT=53 AND 54 ENDF/B-IV WAS ADOPTED.
MT=91
ISOTROPIC DISTRIBUTIONS IN THE CENTER OF MASS SYSTEM
WERE TRANSFORMED INTO THE ONES IN THE LABORATORY SYSTEM.
THE FORMULA IS GIVEN IN REF./25/.
MF=5 ENERGY DISTRIBUTION FOR SECONDARY NEUTRONS
MT=16
EVAPORATION SPECTRUM WAS ASSUMED. CONSTANT TEMPERATURE
WAS DEDUCED FROM THE EXPERIMENTAL DATA OF CHIBA ET AL.
/26/ FOR LI-7 ACCORDING TO THE SQRT(E/A) LAW.
MT=91
EVAPORATION SPECTRUM WAS ASSUMED. CONSTANT TEMPERATURE
OF 3.4 MEV WAS DETERMINED FROM THE STAIR CASE PLOTTING.
MF=12 PHOTON PRODUCTION MULTIPLICITIES
MT=52-68,102,103,107
CALCULATED WITH GNASH/27/.
MF=13 PHOTON PRODUCTION CROSS SECTIONS
MT=3
CALCULATED WITH GNASH/27/.
MF=14 PHOTON ANGULAR DISTRIBUTIONS
MT=3,52-68,102,103,107
ISOTROPIC
MF=15 PHOTON ENERGY DISTRIBUTIONS
MT=3,102,103,107
CALCULATED WITH GNASH/27/.
REFERENCES
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7) MEIER,D. ET AL.: EXFOR 20907,007 (1969).
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25)NAKAGAWA,T: JAERI-M 84-103 (1984).
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27)YOUNG,P.G. AND ARTHUR,E.D.: LA-6947 (1977).
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