28-Ni- 64
28-NI- 64 NAIG EVAL-MAR87 S.IIJIMA
DIST-SEP89 REV2-SEP93
----JENDL-3.2 MATERIAL 2843
-----INCIDENT NEUTRON DATA
------ENDF-6 FORMAT
HISTORY
87-03 EVALUATION WAS PERFORMED FOR JENDL-3. SHORT DESCRIPTION
ON THE EVALUATION IS GIVEN IN REF./1/
87-05 COMPILED BY K.SHIBATA (JAERI).
93-09 JENDL-3.2.
COMPILED BY T.NAKAGAWA (NDC/JAERI)
***** MODIFIED PARTS FOR JENDL-3.2 ********************
(3,106), (3,111) DELETED.
(4,16-28), (4,91) TAKEN FROM JENDL FUSION FILE
(5,16-91) TAKEN FROM JENDL FUSION FILE
***********************************************************
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JENDL FUSION FILE /2/ (AS OF SEP. 1993)
EVALUATED BY S.CHIBA (NDC/JAERI)
COMPILED BY S.CHIBA
CROSS SECTIONS WERE TAKEN FROM JENDL-3.1. EDX'S OF
MT=16, 22, 28 AND 91 WERE REPLACED BY THOSE CALCULATED
WITH SINCROS-II CODE SYSTEM/3/ BECAUSE NORMALIZATION
ERRORS WERE FOUND IN THE DATA STORED IN JENDL-3.1. DDX'S
OF CONTINUUM REACTIONS WERE CREATED WITH F15TOB PROGRAM
/2/ IN WHICH KUMABE'S SYSTEMATICS /4/ WAS USED. THE
PRECOMPOUND/COMPOUND RATIO WAS CALCULATED BY THE SINCROS-
II CODE SYSTEM.
OPTICAL-MODEL, LEVEL DENSITY AND OTHER PARAMETERS USED
IN THE SINCROS-II CALCULATION ARE DESCRIBED IN REF./3/.
LEVEL SCHEMES WERE DETERMINED ON THE BASIS OF ENSDF/5/.
-------------------------------------------------------------
MF=1,MT=451 COMMENTS AND DICTIONARY
MF=2,MT=151 RESOLVED RESONANCE PARAMETERS : 1.0E-5 EV - 553 KEV
PARAMETERS WERE TAKEN FROM JENDL-2.
SCATTERING RADIUS: 6.4 FM
CALCULATED 2200 M/S VALUES AND RESONANCE INTEGRALS (BARN):
2200 M/S VALUE RES.INT
TOTAL 1.515 -
ELASTIC 0.035 -
CAPTURE 1.480 0.820
MF=3 NEUTRON CROSS SECTIONS
BACKGROUND CROSS SECTIONS WERE APPLIED TO RESONANCE REGION.
CROSS SECTIONS ABOVE 553 KEV WERE EVALUATED AS FOLLOWS :
MT=1 : TOTAL CROSS SECTION
EXPERIMENTAL DATA OF FARRELL ET AL./6/ WERE ADOPTED
BETWEEN 553 KEV AND 698 KEV. ABOVE 698 KEV UP TO 20 MEV,
THE OPTICAL-MODEL CALCULATION WAS PERFORMED. POTENTIAL
PARAMETERS WERE OBTAINED BY FITTING NAT-NI DATA /7/:
V =51.33 - 0.331*EN ,WS=8.068 + 0.112*EN ,VSO=7.0 (MEV)
R0=RSO=1.24 ,RS=1.40 (FM)
A0=ASO=0.541 ,AS=0.4 (FM)
SURFACE IMAGINARY PART IS IN DERIVATIVE WOODS-SAXON FORM.
MT=2 : ELASTIC SCATTERING
(TOTAL) - (NONELASTIC CROSS SECTION).
MT=3 : NONELASTIC CROSS SECTION
SUM OF MT=4,16,17,22,28,102,103,104,105,107.
MT=16,17,22,28,103,104,105: (N,2N),(N,3N),(N,N'A),(N,N'P),
(N,P),(N,D),(N,T)
CALCULATED WITH PEGASUS/8/. INVERSE CROSS SECTIONS
WERE CALCULATED FROM THE FOLLOWING OMP'S:
PROTON = PEREY/9/
ALPHA = HUIZENGA AND IGO/10/
DEUTERON = LOHR AND HAEBERLI/11/
HELIUM-3 AND TRITON = BECCHETTI AND GREENLEES/12/
MT=4,51-70,91,102 : INELASTIC SCATTERING AND CAPTURE
CALCULATED WITH THE STATISTICAL MODEL CODE CASTHY/13/.
THE LEVEL SCHEME/14/ USED IS GIVEN AS FOLLOWS:
NO ENERGY(MEV) SPIN-PARITY
G.S 0.0 0 +
1. 1.3459 2 +
2. 2.2750 0 +
3. 2.6080 4 +
4. 2.7500 2 +
5. 2.8650 0 +
6. 2.8850 2 +
7. 2.9710 2 +
8. 3.0280 0 +
9. 3.1650 4 +
10. 3.2730 2 +
11. 3.3930 3 +
12. 3.4590 1 +
13. 3.4830 4 +
14. 3.5600 3 -
15. 3.6470 2 +
16. 3.7480 4 +
17. 3.7950 1 +
18. 3.8080 3 +
19. 3.8480 5 -
20. 3.9650 4 +
CONTINUUM LEVELS ASSUMED ABOVE 4.084 MEV. THE GAMMA-RAY
STRENGTH FUNCTION OF 7.67E-6 WAS OBTAINED FROM THE CAPTURE
CROSS SECTION DATA OF BEER AND SPENCER/15/.
LEVEL DENSITY PARAMETERS ARE:
PAIRING SPIN-CUTOFF F.
A(1/MEV) T(MEV) ENERGY(MEV) (MEV**0.5) EX(MEV)
-------------------------------------------------------------
NI-64 9.300 1.02 2.70 7.124 8.940
NI-65 10.95 0.86 1.20 7.870 6.400
-------------------------------------------------------------
MT=107 : (N,A)
CALCULATED WITH PEGASUS AND MODIFIED BELOW 11 MEV ON THE
BASIS OF EXPERIMENTAL DATA OF QAIM ET AL./16/
MT=251 : MU-BAR
CALCULATED WITH OPTICAL MODEL.
MF=4 ANGULAR DISTRIBUTIONS OF SECONDARY NEUTRONS
MT=2 : CALCULATED WITH OPTICAL MODEL.
MT=16,22,28,91: APPROXIMATELY TRANSFORMED FROM THE MF=6 DATA
(DDX) OF JENDL FUSION FILE.
MT=51-70 : 90 DEGREE SYMMETRIC IN THE CENTER-OF-MASS
SYSTEM, CALCULATED WITH CASTHY.
MF=5 ENERGY DISTRIBUTIONS OF SECONDARY NEUTRONS
MT=16,22,28,91: APPROXIMATELY TRANSFORMED FROM THE MF=6 DATA
(DDX) OF JENDL FUSION FILE.
REFERENCES
1) IIJIMA S. ET AL.: PROC. INT. CONF. NUCLEAR DATA FOR SCIENCE
AND TECHNOL., MITO, 1988, P.627 (1988).
2) CHIBA S. ET AL.: JAERI-M 92-027, P.35 (1992).
3) YAMAMURO N.: JAERI-M 90-006 (1990).
4) KUMABE I. ET AL.: NUCL. SCI. ENG., 104, 280 (1990).
5) ENSDF: EVALUATED NUCLEAR STRUCTURE DATA FILE, BNL/NNDL.
6) FARRELL J.A. ET AL.: ANN. PHYS., 37, 367 (1966)
(EXFOR 11601009).
7) KAWAI M. : UNPUBLISHED.
8) IIJIMA S. ET AL.: JAERI-M 87-025, P.337 (1987).
9) PEREY F.G: PHYS. REV. 131, 745 (1963).
10) HUIZENGA J.R. AND IGO G.: NUCL. PHYS. 29, 462 (1962).
11) LOHR J.M. AND HAEBERLI W.: NUCL. PHYS. A232, 381 (1974).
12) BECCHETTI F.D., JR. AND GREENLEES G.W.: POLARIZATION
PHENOMENA IN NUCLEAR REACTIONS ((EDS) H.H.BARSHALL AND
W.HAEBERLI), P. 682, THE UNIVERSITY OF WISCONSIN PRESS (1971).
13) IGARASI S. AND FUKAHORI T.: JAERI 1321 (1991).
14) LEDERER C.M. AND SHIRLEY V.S.: TABLE OF ISOTOPES, 7TH EDI.,
WILEY-INTERSCIENCE (1978).
15) BEER H. AND SPENCER R.R.: NUCL. PHYS., A240, 29 (1975).
16) QAIM S.M. ET AL.: NUCL. SCI. ENG., 88, 143 (1984).