24-CR- 54 NEDAC EVAL-MAR87 T.ASAMI(NEDAC)
DIST-MAR02 REV3-DEC01 20011226
----JENDL-3.3 MATERIAL 2437
-----INCIDENT NEUTRON DATA
------ENDF-6 FORMAT
HISTORY
87-03 New evaluation was made for JENDL-3.
93-09 JENDL-3.2.
Compiled by T.Nakagawa (ndc/jaeri)
00-03 Reevaluation was made by T.Asami.
01-11 Compiled by K.Shibata (ndc/jaeri)
***** modified parts for JENDL-3.3 ********************
(2,151) revised
(3,2) re-calculated
(3,102) revised
(3,104,105,106,111, 203,207) evaluated newly
(3,251) deleted
(4,2) transformation matrix deleted
(4,16,22,28,91) deleted
(5,16,22,28,91) deleted
(6,16,22,28,91) taken from JENDL fusion file
(6,203, 207) taken from JENDL fusion file
(12,16-107) evaluated newly
(14,16-107) isotropic distributions
(15,16-107) evaluated newly
***********************************************************
mf=1 General information
mt=451 Descriptive data and dictionary
mf=2 Resonance parameters
mt=151 Resolved resonance parameters
Resolved parameters for rech-moore formula were given in the
energy region from 1.0e-5 eV to 750 keV. Evaluated based on
the experimental data of Stieglitz+71/4/, Beer+74/5/,
Allen+77/6/, Kenny+77/7/ and Brusegan+86/8/.
Effective scattering radius = 5.3 fm/9/.
calculated 2200 m/s cross sections and resonance integral.
2200 m/s cross section(b) res. integral(b)
elastic 2.72
capture 0.34 0.18
total 3.06
mf=3 Neutron cross sections
Below 750 keV, no background cross section was given.
Above 750 keV, the total and partial cross sections were given
pointwise.
mt=1 Total
Below 750 keV, created from the resonance parameters.
Above 750 keV, optical and statistical model calculation was
made with the casthy code/10/.
The optical potential parameters used are:
V = 46.78 - 0.262*En, Vso = 7.0 (MeV)
ws = 4.87 + 0.352*En, Wv = 0 (MeV)
r = 1.30, rs = 1.40, rso = 1.30 (fm)
a = 0.55, b = 0.40, aso = 0.48 (fm)
Surface imaginary part is in derivative woods-saxon form.
mt=2 Elastic scattering
Obtained by subtracting the sum of the partial cross sections
from the total cross section.
mt=4, 51-56, 91 Inelastic scattering
Calculated with the casthy code/10/, taking account of the
contribution from the competing processes and using the
discrete level data/3/ shown below. The contributions from
the direct process for the levels marked with '*' were calcu-
lated with the dwuck code/11/. The deformation parameters used
in the calculation were assumed based on a weak coupling
model.
mt no. level energy(mev)
51 0.8349 *
52 1.8237 *
53 2.6195 *
54 2.8294 *
55 3.0739 *
56 3.1600 *
91 3.2000
levels above 3.20 MeV were assumed to be overlapping.
mt=16 (n,2n)
Calculated with the gnash code/12/.
mt=22 (n,na)
Calculated with the gnash code/12/ and normalized.
mt=28 (n,np)
Calculated with the gnash code/12/ and normalized.
mt=102 Capture
Below 750 keV, created from the resonance parameters.
Above 750 keV, calculated with the casthy code/10/ and
normalized at 50 keV so as to reproduce the element data of
10 mb, and added the semidirect component calculated with the
quick gnash code/19,20/.
mt=103 (n,p)
Calculated with the gnash code/12/ and normalized at 14.7 MeV
to an average value of the experimental data/13,14,15/.
mt=104,105,106 (n,d), (n,t), (n,He-3)
Obtained from from the sincros-ii calculation made with the
the egnash code/2/.
mt=107 (n,a)
Calculated with the gnash code/12/ and normalized at 14.8 MeV
to an average value of the experimental data/14,15,16/.
mt=111 (n,2p)
Obtained from from the sincros-ii calculation made with the
the egnash code/2/.
mt=203 Total proton production
Sum of mt=28 and 103.
mt=207 Total alpha production
sum of mt=22 and 107.
mf=4 Angular distributions of secondary neutrons
mt=2 Elastic scattering
Calculated with the casthy code/10/.
mt=51-56 Inelastic scattering
Calculated with the casthy code and the dwuck code/11/.
mf=6 Energy-angle distributions of secondary particles
mt=16, 22, 28, 91
Based on modified Kumabe's systematics/1/.
mt=203, 207
Based on Kalbach's 1988 systematics/17/.
mf=12 Photon production multiplicities and transition probability
arrays
mt=16, 22, 28, 51-56, 91,103, 104, 107
mt=51-16 were given as the transition probability arrays.
mt=16, 22, 28, 91, 102, 103, 104, 107 were calculated with
the egnash code/2/ and processed by the gamfil2 code/18/.
mt=102 was calculated with the casthy code/10/.
mf=14 photon angular distributions
mt=16, 22, 28, 51-56, 91, 102, 103, 104, 107
assumed to be isotropic distributions
mf=15 Continuous photon energy spectra
mt=16, 22, 28, 91, 103, 104, 107
Calculated with the egnash code/2/.
mt=102
Calculated with the casthy code/10/.
references
1) Chiba S. et al.: JAERI-M 92-027, p.35 (1992).
2) Yamamuro N.: JAERI-M 90-006 (1990).
3) Data taken from ENSDF(Evaluated Nuclear Structure Data File).
4) Stiegliz R.G. et al.: Nucl. Phys. A163, 592 (1971).
5) Beer H. and Spencer R.P.: KfK-2063 (1974), also Nucl. Phys.
A240, 29 (1975).
6) Allen B.J. and Musgrove A.R.de L.: Neutron Data of Structural
Materials for FBR, 1977 Geel meeting, p.447, Pergamon Press
(1979).
7) Kenny M.J. et al.: AAEC/E-400 (1977).
8) Brusegan A. et al.: 85 Santa Fe Vol.1 p.633 (1986).
9) Mughabghab S.F. et al.: "Neutron Cross Sections ", Vol.1,
Part A (1981).
10) Igarasi S. and Fukahori T.: JAERI 1321 (1991).
11) Kunz P.D.: unpublished.
12) Young P.G. and Arthur E.D.: LA-6947 (1977).
13) Valkonen M.: Taken from EXFOR (1976).
14) Husain L. et al.: J. Inorg. Nucl. Chem. 29, 2665 (1967).
15) Qaim S.M. et al.: Nucl. Phys. A283, 269 (1977).
16) Sailer K. et al.: 1977 Kiev Conf. Vol.1, 246 (1977).
17) Kalbach C. : Phys. Rev. C37, 2350(1988).
18) Hida K.: JAERI-M 86-150 (1986) (in Japanese).
19) Young p.g. et al. : LA-12343-MS (1992).
20) Koning A.J. and Delaroche J.P. : ECN-RX-98-015 (1998).