72-Hf-179
72-HF-179 NAIG+ EVAL-JUL89 HIDA, YOSHIDA AND SHIBATA(JAERI)
DIST-SEP89 REV2-JAN94
----JENDL-3.2 MATERIAL 7240
-----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), (3,51-58), (3,61-62)
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 250 EV
RES. ENERGIES AND GAM-N : BNL-325 /1/. IF UNKNOWN, GAM-N IS
CALCULATED FROM D-OBS AND S0 GIVEN
IN /1/.
GAM-GAMMA : 0.066 EV ASSUMED IF UNKNOWN.
RADIUS : 7.8 FM
UNRESOLVED RESONANCES
ENERGY RANGE : 250 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 = 5.71 EV, S0 = 2.20E-4, S1 = 0.83E-4,
R = 7.7 FM AND GAM-GAMMA = 0.066 EV.
2200 M/SEC CROSS SECTIONS AND CALCULATED RES. INTEGRALS.
2200 M/SEC RES. INTEG.
TOTAL 49.5 B -
ELASTIC 6.8 B -
CAPTURE 42.8 B 523.0 B
MF=3 NEUTRON CROSS SECTIONS
BELOW 50 KEV :
NO BACKGROUND WAS GIVEN.
ABOVE 50 KEV :
MT=1,2,4,51-62,91,102 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 = 46.66-0.3*EN, WS = 3.73+0.4*EN (EN<10), VSO = 6.2 (MEV),
7.73 (EN>10)
A0 = 0.63, AS = 0.52, ASO = 0.47 (FM),
R0 = 1.24, RS = 1.24, RSO = 1.12 (FM),
BETA-2 = 0.261, 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).
CAPTURE CROSS SECTION WAS NORMALIZED TO THE MEASURED DATA OF
BEER ET AL. /6/ AT 30 KEV. COMPETING PROCESSES (N,2N), (N,3N),
(N,P), AND (N,ALPHA) WERE CALCULATED WITH GNASH /7/ AND FED TO
ECIS-CASTHY CALCULATION. THE LEVEL FLUCTUATION AND INTERFERENCE
EFFECTS WERE CONSIDERED. LEVEL SCHEME WAS TAKEN FROM TABLE OF
ISOTOPES /8/.
NO. ENERGY(MEV) SPIN-PARITY
G.S. 0.0 9/2 +
1 0.1227 11/2 +
2 0.2143 7/2 -
3 0.2688 13/2 +
4 0.3377 9/2 -
5 0.3750 1/2 -
6 0.4386 15/2 +
7 0.5184 5/2 -
8 0.6169 7/2 -
9 0.6312 17/2 +
10 0.8483 19/2 +
11 0.8702 7/2 -
12 1.0034 5/2 +
CONTINUUM LEVELS ASSUMED ABOVE 1.0700 MEV.
THE LEVEL DENSITY PARAMETERS FOR GILBERT AND CAMERON'S FORMULA
/9/ ARE THE SAME AS THOSE OF JENDL-2.
A(1/MEV) C(1/MEV) T(MEV) EX(MEV) SIGMA**2
HF-179 22.57 6.88 0.465 3.98 9.31
HF-180 21.37 2.35 0.519 5.42 7.64
MT=16,17,103,107 (N,2N), (N,3N), (N,P) AND (N,ALPHA)
CALCULATED WITH GNASH /7/. THE TRANSMISSION COEFFICIENTS FOR
THE THE INCIDENT CHANNEL WERE GENERATED WITH ECIS /2/, WHILE
THOSE FOR THE EXIT CHANNELS WITH ELIESE-3 /10/. THE PREEQUILI-
BRIUM PARAMETER F2 WAS F2=5.0.
MT=251 MU-BAR
CALCULATED WITH ECIS /2/ AND CASTHY /3/.
MF=4 ANGULAR DISTRIBUTIONS OF SECONDARY NEUTRONS
MT=2,51-62,91
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 /7/.
MF=12 PHOTON MULTIPLICITIES AND TRANSITION PROBABILITIES
MT=16,17,91,102,103,107
CALCULATED WITH GNASH /7/ 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 /11/
AND THE PYGMY RESONANCE WHOSE PARAMETER VALUES WERE CITED FROM
THE NEIGHBOURING NUCLEUS TA /12/.
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=51-62
STORED UNDER OPTION-2 (TRANSITION PROBABILITY ARRAY). DATA WERE
TAKEN FROM /8/.
MF=14 PHOTON ANGULAR DISTRIBUTIONS
MT=16,17,51-62,91,102,103,107
ISOTROPIC.
MF=15 CONTINUOUS PHOTON ENERGY SPECTRA
MT=16,17,91,102,103,107
CALCULATED WITH GNASH /7/.
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) BEER H. AND MACKLIN R.L.: PHYS. REV., C26, 1404 (1982).
7) YOUNG P.G. AND ARTHUR E.D.: LA-6947 (1977).
8) LEDERER C.M. AND SHIRLEY V.S.: TABLE OF ISOTOPES 7TH EDITION
(1979).
9) GILBERT A. AND CAMERON A.G.W.: CAN. J. PHYS., 43, 1446 (1965).
10) IGARASI S.: JAERI-1224 (1972).
11) BERMAN B.L.: AT. DATA NUCL. DATA TABLES, 15, 319 (1975).
12) IGASHIRA M. ET AL.: INT. SYMP. CAPTURE GAMMA-RAY SPECROSCOPY
AND RELATED TOPICS - 1984, 523 (1985).