28-Ni- 62
28-NI- 62 NAIG EVAL-MAR87 S.IIJIMA
DIST-SEP89 REV2-SEP93
----JENDL-3.2 MATERIAL 2837
-----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).
90-10 MF=5: DATA AT THRESHOLD ENERGIES WERE MODIFIED.
93-09 JENDL-3.2.
COMPILED BY T.NAKAGAWA (NDC/JAERI)
***** MODIFIED PARTS FOR JENDL-3.2 ********************
(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/.
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MF=1,MT=451 COMMENTS AND DICTIONARY
MF=2,MT=151 RESOLVED RESONANCE PARAMETERS : 1.0E-5 EV - 557 KEV
PARAMETERS WERE TAKEN FROM JENDL-2.
SCATTERING RADIUS: 6.2 FM
CALCULATED 2200 M/S VALUES AND RESONANCE INTEGRALS (BARN):
2200 M/S VALUE RES.INT
TOTAL 23.704 -
ELASTIC 9.505 -
CAPTURE 14.199 6.91
MF=3 NEUTRON CROSS SECTIONS
BACKGROUND CROSS SECTIONS WERE APPLIED TO THE RESONANCE REGION.
CROSS SECTIONS ABOVE 557 KEV WERE EVALUATED AS FOLLOWS :
MT=1 : TOTAL CROSS SECTION
EXPERIMENTAL DATA OF FARRELL ET AL./6/ WERE ADOPTED
BETWEEN 557 KEV AND 670 KEV. ABOVE 670 KEV UP TO 20 MEV,
THE OPTICAL-MODEL CALCULATION WAS PERFORMED. POTENTIAL
PARAMETERS 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=4,16,22,28,102,103,104,105,106,107,111.
MT=16,22,28,103,104,105,106,111 (N,2N),(N,N'A),(N,N'P),
(N,P),(N,D),(N,T),(N,HE-3),(N,2P)
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=4,51-71,91,102 : INELASTIC SCATTERING AND CAPTURE
CALCULATED WITH THE STATISTICAL-MODEL CODE CASTHY/13/ BY
CONSIDERING THE SUM OF OTHER THRESHOLD REACTIONS AS
COMPETING PROCESSES. THE LEVEL SCHEME/14/ USED IS GIVEN
AS FOLLOWS:
NO ENERGY(MEV) SPIN-PARITY
G.S 0.0 0 +
1. 1.1729 2 +
2. 2.0486 0 +
3. 2.3018 2 +
4. 2.3364 4 +
5. 2.8912 0 +
6. 3.0582 2 +
7. 3.1580 2 +
8. 3.1765 4 +
9. 3.2577 2 +
10. 3.2620 4 +
11. 3.2699 2 +
12 3.2774 4 +
13. 3.3703 1 +
14. 3.4620 4 +
15. 3.4860 0 +
16. 3.5185 2 +
17. 3.5229 3 +
18. 3.7570 3 -
19. 3.8493 1 +
20. 3.8530 2 +
21. 3.8600 2 +
CONTINUUM LEVELS ASSUMED ABOVE 3.967 MEV. THE GAMMA-RAY
STRENGTH FUNCTION OF 1.379E-5 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-62 8.215 1.13 2.61 6.552 9.280
NI-63 9.666 0.985 1.20 7.187 7.260
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MT=107 : (N,A)
BASED ON THE CACULATION WITH PEGASUS. BELOW 10 MEV,
EXPERIMENTAL DATA BY QAIM ET AL./16/ WERE ADOPTED.
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=51-71 : 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).