9-F - 19
9-F - 19 JAERI EVAL-JUL89 T.SUGI
DIST-SEP89 REV2-JUN94
----JENDL-3.2 MATERIAL 925
-----INCIDENT NEUTRON DATA
------ENDF-6 FORMAT
HISTORY
83-11 EVALUATION FOR JENDL-2 WAS PERFORMED BY SUGI AND NISHIMURA
(JAERI)/1/.
89-07 RESONANCE PARAMETERS AND TOTAL CROSS SECTION WERE
RE-EVALUATED FOR JENDL-3.
89-07 COMPILED BY T. NARITA (JAERI).
94-06 JENDL-3.2.
GAMMA PRODCTION DATA MODIFIED BY T.ASAMI (DATA ENG.)
OTHER DATA WERE MAINLY ADOPTED FROM JENDL FUSION FILE.
COMPILED BY T.NAKAGAWA (NDC/JAERI)
***** MODIFIED PARTS FOR JENDL-3.2 ********************
(3,2), (3,4), (3,22), (3,28), (3,52-91), (3,104), (3,251)
ALL ANGULAR DISTRIBUTIONS
ALL ENERGY DISTRIBUTIONS
NEW EVALUATION FOT GAMMA-RAY PRODUCTION DATA
***********************************************************
-------------------------------------------------------------
JENDL FUSION FILE /2/ (AS OF JUN. 1994)
EVALUATED AND COMPILED BY S.CHIBA (NDC/JAERI).
THE CALCULATIONS HAVE BEEN CARRIED OUT WITH THE SINCROS-II
CODE SYSTEM (DWUCKY, EGNASH AND CASTHY2Y) /3/. THE
FOLLOWING SET OF OMPS WERE SELECTED:
N : YAMAMURO (MODIFIED WALTER-GUSS) /3/
P : PEREY AND WALTER-GUSS COMBINED /4/
D : LOHR-HAEBERLI /5/
T : BECCHETTI-GREENLEES /6/
HE-3 : BECCHETTI-GREENLEES /6/
ALPHA : LEMOS SET MODIFIED BY ARTHUR-YOUNG /7/
THE FOLLOWING VALUES OF LEVEL DENSITY PARAMETERS (1/MEV)
WERE USED TO REPRODUCE THE DDX AT 14 MEV:
F-20 F-19 F-18 O-19 O-18 O-17 N-17 N-16 N-15 N-14 C-15 C-14
4.49 3.50 2.50 2.50 3.00 2.99 3.51 2.00 2.00 2.03 2.84 2.46
THE DATA WERE TAKEN FROM JENDL-3.1 EXCEPT FOR THE FOLLOWING:
MF=3, MT= 2: ADJUSTED TO CONSERVE THE TOTAL C.S.
MF=3, MT= 3: CALCULATED AS A SUM OF REACTION C.S.
MF=3, MT= 4: CALCAULATED AS A SUM OF INELASTIC C.S.
MF=3, MT=22, 28, 32, 91 : TAKEN FROM THE SINCROS-II
CALCULATION
MF=3, MT=52: REPLACED BY THE SINCROS-II CALCULATION ABOVE
2.5 MEV
MF=3, MT=53-60: REPLACED BY THE SINCROS-II CALCULATION
MF=3, MT=203,204,205,207: TAKEN FROM THE SINCROS-II CALC.
MF=4, MT= 2: REPALCED BY THE SINCROS-II CALCULATION
MF=6, MT=22, 28, 32, 91 : TAKEN FROM THE SINCROS-II
CALCULATION. KUMABE'S SYSTEMATICS WAS USED.
MF=6, MT=203,204,205,207: TAKEN FROM THE SINCROS-II
CALCULATION. KALBACH'S SYSTEMATICS WAS USED.
-------------------------------------------------------------
MF=1 GENERAL INFORMATION
MT=451 DESCRIPTIVE DATA AND DICTIONARY
MF=2 RESONANCE PARAMETERS
MT=151 RESOLVED RESONANCE PARAMETERS : 1.0E-5 EV - 100 KEV
THE MULTI-LEVEL BREIT-WIGNER FORMULA WAS USED.
RES. ENERGIES AND GAM-N : THE FIRST TWO LEVELS WERE BASED ON
JOHNSON ET AL. /8/. THE 3RD AND 4TH LEVELS WERE ADJUSTED
SO AS TO FIT TO THE EXPERIMENTAL DATA OF LARSON ET AL./9/
GAM-G : THE FIRST THREE LEVELS WERE BASED ON MACKLIN AND
WINTERS /10/. THE 4TH LEVEL WAS ADJUSTED SO AS TO FIT TO
THE RECOMMENDED THERMAL CAPTURE CROSS SECTION OF
MUGHABGHAB ET AL./11/.
SCATTERING RADIUS: 5.525 FM
CALCULATED 2200-M/S CROSS SECTIONS AND RES. INTEGRALS.
2200 M/S RES. INTEG.
ELASTIC 3.643 B -
CAPTURE 9.6 MILLI-B 19.5 MILLI-B
TOTAL 3.652 B -
MF=3 NEUTRON CROSS SECTIONS
MT=1 TOTAL CROSS SECTION
BELOW 100 KEV: NO BACKGROUND.
ABOVE 100 KEV: BASED ON THE EXPERIMENTAL DATA OF LARSON ET
AL./9/
MT=2 ELASTIC SCATTERING CROSS SECTION
DERIVED BY SUBTRACTING THE NONELASTIC CROSS SECTION FROM
THE TOTAL CROSS SECTION.
MT=4 TOTAL INELASTIC SCATTERING CROSS SECTION
SUM OF MT=51-60,91.
MT=16 (N,2N) CROSS SECTION
CALCULATED BY FITTING THE PEARLSTEIN'S FUNCTION /12/ TO THE
EXPERIMENTAL DATA.
MT=22 (N,N' ALPHA) AND (N,ALPHA N') CROSS SECTIONS
CALCULATED BY THE SINCROS-II CODE SYSTEM.
MT=28 (N,N' P) AND (N,P N') CROSS SECTIONS
CALCULATED BY THE SINCROS-II CODE SYSTEM.
MT=51-60 INELASTIC SCATTERING CROSS SECTIONS
MT=51 (TAKEN FROM JENDL-3.1)
UP TO 1 MEV : BASED ON THE EXPERIMENTAL DATA OF BRODER
ET AL. /13/.
1 MEV - 5.5 MEV : CALCULATED WITH THE HAUSER-FESHBACH
METHOD (ELIESE-3 /14/) TAKING INTO ACCOUNT
(N,ALPHA) AND (N,P) AS COMPETING PROCESSES. THE
LEVEL SCHEME OF F-19, N-16 AND O-19 WAS TAKEN FROM
AJZENBERG-SELOVE /15,16/. THE OPTICAL POTENTIAL
PARAMETERS ARE :
V = 51.56 - 1.492*E (MEV),
WS = 11.82 (MEV),
VSO= 10.0 (MEV),
R0 = RS = RSO = 1.31 (FM),
A = ASO = 0.66 (FM),
B = 0.47 (FM).
THE LEVEL DENSITY PARAMETER OF 3.609 (1/MEV)/17/ AND
PAIRING ENERGY OF 2.52 MEV /18/ WERE USED.
MT=52
UP TO 2.5 MEV: TAKEN FROM JENDL-3.1, WHICH IS BASED ON THE
DATA OF BRODER ET AL. /13/.
ABOVE 2.5 MEV: CALCULATED BY THE SINCROS-II CODE SYSTEM.
MT=53 - 60
CALCULATED BY THE SINCROS-II CODE SYSTEM.
THE SINCROS-II CALCULATION ADOPTED THE FOLLOWING DISCRETE
LEVELS. THE LEVELS WITH L AND BETA-L INCLUDE THE
CONTRIBUTION OF DIRECT INELASTIC SCATTERING, WHICH WAS
CALCULATED ASSUMING THE WEAK-COUPLING MODEL BY THE DWBA
METHOD:
----------------------------------------------
MT EX(MEV) SPIN-PARITY L BETA-L
----------------------------------------------
2 0.0 1/2+
51 0.1099 1/2-
52 0.1972 5/2+ 2 0.4
53 1.3457 5/2-
54 1.4585 3/2-
55 1.5541 3/2+ 2 0.6
56 2.7798 9/2+ 4 0.4
57 3.9071 3/2+
58 3.9985 7/2-
59 4.0325 9/2-
60 4.3777 7/2+ 4 0.4
----------------------------------------------
MT=91 INELASTIC TO CONTINUUM
CALCULATED WITH SINCROS-II CODE SYSTEM.
MT=102 CAPTURE CROSS SECTION
BELOW 100 KEV : NO BACKGROUND.
100 KEV - 1.87 MEV : BASED ON THE EXPERIMENTAL DATA OF
GABBARD ET AL. /19/.
1.87 MEV - 20 MEV : ASSUMED TO DECREASE WITH 1/V LAW.
MT=103 (N,P) CROSS SECTION
UP TO 9 MEV : BASED ON THE EXPERIMENTAL DATA OF BASS ET
AL. /20/.
9 MEV - 20 MEV : CALCULATED WITH THE STATISTICAL MODEL BY
USING PEARLSTEIN' EMPIRICAL FORMULA.
MT=104 (N,D) CROSS SECTION
CALCULATED BY THE SINCROS-II CODE SYSTEM.
MT=105 (N,T) CROSS SECTION
CALCULATED BY THE SINCROS-II CODE SYSTEM.
MT=107 (N,ALPHA) CROSS SECTION
BELOW 9 MEV, BASED ON THE FOLLOWING EXPERIMENTAL DATA:
UP TO 4MEV DAVIS ET AL. /21/,
4MEV - 5.5MEV SMITH ET AL. /22/,
5.5MEV - 9MEV BASS ET AL. /20/.
ABOVE 9 MEV, CALCULATED WITH THE PEARLSTEIN'S FORMULA.
MT=251 AVERAGE COSINE IN THE LABORATORY SYSTEM
DERIVED FROM THE ANGULAR DISTRIBUTIONS.
MF=4 ANGULAR DISTRIBUTIONS OF SECONDARY NEUTRONS
MT=2
CALCULATED WITH OPTICAL MODEL BY THE SINCROS-II CODE SYSTEM.
MT=16,22,28
CALCULATED BASED ON KUMABE'S SYSTEMATICS /23/.
MT=51-60
CALCULATED BY THE SINCROS-II CODE SYSTEM.
MT=91
CALCULATED BASED ON KUMABE'S SYSTEMATICS /23/.
MF=5 ENERGY DISTRIBUTIONS OF SECONDARY NEUTRONS
MT=16,22,28.91
CALCULATED BY THE SINCROS-II CODE SYSTEM.
REFERENCES
1) SUGI T. AND NISHIMURA K.: JAERI-M 7253 (1977), ENGLISH TRANS-
LATION : ORNL-TR-4605.
2) CHIBA, S. ET AL.: JAERI-M 92-027, P.35(1992).
3) YAMAMURO, N.: JAERI-M 90-006 (1990).
4) WALTER, R.L. AND GUSS, P.P.: INT. CONF. ON NUCL. DATA FOR
BASIC AND APPLIED SCIENCE, SANTA FE, N.M. P.1079(1985).
5) LOHR, J.M. AND HAEBERLI, W.: NUCL. PHYS. A232, 381 (1974).
6) BECCHETTI, F.D. AND GREENLEES, G.W.: "POLARIZATION PHENOMENA
IN NUCLEAR REACTIONS", UNIV. OF WISCONSIN PRESS, P.682
(1971).
7) ARTHUR, E.D. AND YOUND, P.G.: LA-8626-MS (1980).
8) JOHNSON C.H. ET AL.: ORNL-5025 (1975).
9) LARSON D.C. ET AL.: ORNL/TM-5612 (1976).
10) MACKLIN R.L. AND WINTERS R.R.: PHYS. REV. C7, 1766 (1973).
11) MUGHABGHAB S.F. ET AL.: NEUTRON CROSS SECTIONS, VOL.1, PART A,
Z=1-60, ACADEMIC PRESS (1981).
12) PEARLSTEIN S.: NUCL. SCI. ENG. 23, 238 (1965).
13) BRODER ET AL.: 70 HELSINKI CONF. 2, 295 (1970).
14) IGARASI S.: JAERI 1224 (1972).
15) AJZENBERG-SELOVE F.: NUCL. PHYS. A166, 1 (1971).
16) AJZENBERG-SELOVE F.: NUCL. PHYS. A190, 1 (1972).
17) ABDELMALEK N.N. AND STAVINSKY V.S.: NUCL. PHYS. 58, 601 (1964)
18) NEWTON T.D.: CAN. J. PHYS. 34, 804 (1956).
19) GABBARD F. ET AL.: PHYS. REV. 114, 201 (1959).
20) BASS R. ET AL.: EANDC(E) 66-64.
21) DAVIS E.A. ET AL.: NUCL. PHYS. 27, 448 (1961).
22) SMITH D.M. ET AL.: PHYS. REV. 117, 514 (1960).
23) KUMABE, I. ET AL.: NUCL. SCI. AND ENG., 104, 280 (1990).