72-HF-174 NAIG+ EVAL-JUL89 HIDA, YOSHIDA AND SHIBATA(JAERI)
DIST-SEP89 REV2-JAN94
----JENDL-3.2 MATERIAL 7225
-----INCIDENT NEUTRON DATA
------ENDF-6 FORMAT
HISTORY
89-07 NEW EVALUATION FOR JENDL-3 WAS MADE BY K.HIDA, T.YOSHIDA
(NAIG) AND K.SHIBATA (JAERI).
94-01 JENDL-3.2.
COMPILED BY T.NAKAGAWA (NDC/JAERI)
***** MODIFIED PARTS FOR JENDL-3.2 ********************
(3,2), (3,4), (3,51), (3,52), (3,55-63), (3,65-68)
CURVES OF INELASTIC SCATTERING CROSS SECTIONS
WERE SMOOTHED BY ADDING INTERPOLATED VALUES AT
SEVERAL ENERGY POINTS.
***********************************************************
MF=1 GENERAL INFORMATION
MT=451 DESCRIPTIVE DATA AND DICTIONARY
MF=2 RESONANCE PARAMETERS
MT=151 RESOLVED AND UNRESOLVED RESONANCE PARAMETERS
RESOLVED RESONANCES FOR MLBW FORMULA
ENERGY RANGE : 1.0E-5 EV TO 220 EV.
RES. ENERGIES AND GAM-N : BNL-325 /1/.
GAM-GAMMA : 0.060 EV ASSUMED IF UNKNOWN.
RADIUS : 7.5 FM
UNRESOLVED RESONANCES
ENERGY RANGE : 220 EV TO 50 KEV.
S0, S1, R AND GAM-GAMMA : ADJUSTED SO THAT THE CALCULATED
TOTAL AND CAPTURE CROSS SECTIONS
WERE REPRODUCED WELL.
RESULTS ARE D-OBS = 13.4 EV, S0 = 2.8E-4, S1 = 1.00E-4,
R = 7.9 FM AND GAM-GAMMA = 0.054 EV.
2200 M/SEC CROSS SECTIONS AND CALCULATED RES. INTEGRALS.
2200 M/SEC RES. INTEG.
TOTAL 576.4 B -
ELASTIC 15.0 B -
CAPTURE 561.5 B 363.8 B
MF=3 NEUTRON CROSS SECTIONS
BELOW 50 KEV :
NO BACKGROUND WAS GIVEN.
ABOVE 50 KEV :
MT=1,2,4,51-68,91,102 TOTAL,ELASTIC,INELASTIC AND CAPTURE
CALCULATED WITH ECIS /2/ AND CASTHY /3/. DEFORMED OPTICAL
POTENTIAL FOR ECIS CALCULATION WAS DETERMINED SO AS TO REPRODUCE
THE EXPERIMENTAL TOTAL CROSS SECTION OF NATURAL HAFNIUM,
STARTING WITH THE HAOUAT POTENTIAL /4/.
V0 = 47.05-0.3*EN, WS = 3.92+0.4*EN (EN<10), VSO = 6.2 (MEV),
7.92 (EN>10)
A0 = 0.63, AS = 0.52, ASO = 0.47 (FM),
R0 = 1.24, RS = 1.24, RSO = 1.12 (FM),
BETA-2 = 0.266, BETA-4 = 0.0.
THE DEFORMATION PARAMETER BETA-2 WAS DETERMINED FROM THE
MEASURED E2 TRANSITION PROBABILITY DATA /5/. THE LOWEST THREE
LEVELS BELONGING TO THE GROUND STATE ROTATIONAL BAND WERE
COUPLED IN THE CALCULATION. THE SPHERICAL OPTICAL POTENTIAL FOR
CASTHY CALCULATION IS THE SAME AS THAT OF JENDL-2.
V0 = 38.0, WS = 8.0+0.5*SQRT(EN), VSO = 7.0 (MEV),
A0 = 0.47, AS = 0.52 , ASO = 0.47 (FM),
R0 = 1.32, RS = 1.32 , RSO = 1.32 (FM).
COMPETING PROCESSES (N,2N) AND (N,3N) WERE CALCULATED WITH GNASH
/6/ AND FED TO ECIS-CASTHY CALCULATION. THE LEVEL FLUCTUATION
AND INTERFERENCE EFFECTS WERE CONSIDERED. LEVEL SCHEME WAS
TAKEN FROM TABLE OF ISOTOPES /7/.
NO. ENERGY(MEV) SPIN-PARITY
G.S. 0.0 0 +
1 0.0910 2 +
2 0.2975 4 +
3 0.6084 6 +
4 0.8282 0 +
5 0.9002 2 +
6 1.0622 4 +
7 1.2268 2 +
8 1.3034 3 +
9 1.3087 2 -
10 1.3194 2 +
11 1.3365 3 +
12 1.3947 4 +
13 1.4253 4 -
14 1.4429 5 -
15 1.4489 4 +
16 1.4964 2 +
17 1.5034 3 +
18 1.6261 4 +
CONTINUUM LEVELS ASSUMED ABOVE 1.6487 MEV.
THE LEVEL DENSITY PARAMETERS FOR GILBERT AND CAMERON'S FORMULA
/8/ ARE THE SAME AS THOSE OF JENDL-2.
A(1/MEV) C(1/MEV) T(MEV) EX(MEV) SIGMA**2
HF-174 23.09 2.31 0.477 5.01 7.47
HF-175 22.93 10.0 0.484 4.42 6.00
MT=16,17 (N,2N), (N,3N)
CALCULATED WITH GNASH /6/. THE TRANSMISSION COEFFICIENTS FOR THE
INCIDENT CHANNEL WERE GENERATED WITH ECIS /4/, WHILE THOSE FOR
THE EXIT CHANNELS WITH ELIESE-3 /9/. THE PREEQUILIBRIUM PARAME-
TER F2 WAS ADJUSTED TO REPRODUCE THE MEASURED (N,2N) CROSS
SECTION AT 14.5 MEV AND RESULTED IN F2=5.0.
MT=251 MU-BAR
CALCULATED WITH ECIS /2/ AND CASTHY /3/.
MF=4 ANGULAR DISTRIBUTIONS OF SECONDARY NEUTRONS
MT=2,51-68,91
CALCULATED WITH ECIS /2/ AND CASTHY /3/.
MT=16,17
ISOTROPIC IN THE LABORATORY SYSTEM.
MF=5 ENERGY DISTRIBUTIONS OF SECONDARY NEUTRONS
MT=16,17,91
CALCULATED WITH GNASH /6/.
MF=12 PHOTON MULTIPLICITIES AND TRANSITION PROBABILITIES
MT=16,17,91,102
CALCULATED WITH GNASH /6/ AND STORED UNDER OPTION-1 (PHOTON
PRODUCTION MULTIPLICITIES). THE PHOTON STRENGTH FUNCTIONS FOR
MOST NUCLEI WERE TAKEN FROM /1/, WHILE THOSE FOR SOME HAFNIUM
ISOTOPES WERE DETERMINED FROM CAPTURE CROSS SECTION NORMALIZA-
TION TO THE EXPERIMENTAL DATA. THE PHOTON PROFILE FUNCTION IS A
SUPERPOSITION OF THE BERMAN-TYPE GIANT DIPOLE RESONANCE /10/ AND
THE PYGMY RESONANCE WHOSE PARAMETER VALUES WERE CITED FROM THE
NEIGHBOURING NUCLEUS TA /11/.
EG1 = 15.23, EG2 = 12.3 , EP = 5.2 (MEV),
GG1 = 4.48, GG2 = 2.43, GP = 2.5 (MEV),
SIG-PYGMY/SIG-GDR = 0.0245.
MT=51-68
STORED UNDER OPTION-2 (TRANSITION PROBABILITY ARRAY). DATA WERE
TAKEN FROM /7/.
MF=14 PHOTON ANGULAR DISTRIBUTIONS
MT=16,17,51-68,91,102
ISOTROPIC.
MF=15 CONTINUOUS PHOTON ENERGY SPECTRA
MT=16,17,91,102
CALCULATED WITH GNASH /6/.
REFERENCES
1) MUGHABGHAB S.F.: NEUTRON CROSS SECTIONS, VOL.1, PART B (1984).
2) RAYNAL J.: IAEA SMR-9/8 (1970).
3) IGARASI S. AND FUKAHORI T.: JAERI 1321 (1991).
4) HAOUAT G. ET AL.: NUCL. SCI. ENG., 81, 491 (1982).
5) RAMAN S. ET AL.: AT. DATA NUCL. DATA TABLES, 36, 1 (1987).
6) YOUNG P.G. AND ARTHUR E.D.: LA-6947 (1977).
7) LEDERER C.M. AND SHIRLEY V.S.: TABLE OF ISOTOPES 7TH EDITION
(1979).
8) GILBERT A. AND CAMERON A.G.W.: CAN. J. PHYS., 43, 1446 (1965).
9) IGARASI S.: JAERI-1224 (1972).
10) BERMAN B.L.: AT. DATA NUCL. DATA TABLES, 15, 319 (1975).
11) IGASHIRA M. ET AL.: INT. SYMP. CAPTURE GAMMA-RAY SPECROSCOPY
AND RELATED TOPICS - 1984, 523 (1985).