24-CR- 53 NEDAC EVAL-MAR87 T.ASAMI(NEDAC)
DIST-MAR02 REV3-DEC01 20011226
----JENDL-3.3 MATERIAL 2434
-----INCIDENT NEUTRON DATA
------ENDF-6 FORMAT
HISTORY
87-03 New evaluation was made for JENDL-3
88-12 mf/mt=3/107 modified.
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
(3,28,102,103,107) 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 Reich-Moore formula were given in the
energy region from 1.0e-5 eV to 245 keV. Evaluated based on the
experimental data of Stieglitz+71/4/, Beer+74/5/, Allen+77/6/,
Kenny+77/7/, Brusegan+86/8/ and Mueller+71/9/. Effective
scattering radius = 5.4 fm/10/.
calculated 2200 m/s cross sections and resonance integral.
2200 m/s cross section(b) res. integral(b)
elastic 8.46
capture 17.6 8.35
total 26.0
mf=3 Neutron cross sections
Below 245 keV, no background cross section was given.
Above 245 keV, the total and partial cross sections were given
pointwise.
mt=1 Total
Below 245 keV, created from the resonance parameters
Above 245 keV, optical and statistical model calculation was
made with the casthy code/11/.
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, 51-63, 91 Inelastic scattering
Calculated with the casthy code/11/, 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
calculated with the dwuck code/12/. The deformation parame-
ters used in the calculation were assumed based on a weak
coupling model.
level energy(MeV) spin-parity
g.s. 0.0 3/2-
1 0.5640 1/2- *
2 1.0063 5/2- *
3 1.2895 7/2- *
4 1.5366 7/2- *
5 1.9736 5/2- *
6 2.1724 11/2-
7 2.2330 9/2-
8 2.3208 3/2-
9 2.4531 3/2-
10 2.6570 5/2-
11 2.6695 1/2-
12 2.7065 13/2-
13 2.7080 3/2-
14 2.7720 5/2-
15 2.8266 11/2-
16 2.9930 7/2-
17 3.0841 15/2-
18 3.0930 5/2-
19 3.1380 5/2-
20 3.1793 3/2-
21 3.2439 11/2-
22 3.2610 5/2-
The calculated data for the inelastic scattering were finally
lumped for the convenieince on the construction of the element
data as follows:
mt no. level energy(MeV) lumping
51 0.5640 1
52 1.0063 2
53 1.2895 3
54 1.5366 4
55 1.9736 5
56 2.1724 6
57 2.2330 7
58 2.3208 8
59 2.4531 9
60 2.6695 10-13
61 2.7720 14
62 2.8266 15
63 2.9930 16
91 3.0500 over 17
Levels above 3.05 MeV were assumed to be overlapping.
mt=16 (n,2n)
Calculated with the gnash code/13/.
mt=22 (n,na)
Calculated with the gnash code/13/ and normalized.
mt=28 (n,np)
Obtained from from the sincros-ii calculation made with the
with the egnash code/2/.
mt=102 capture
Below 245 keV, created from the resonance parameters
Above 245 keV, calculated with the casthy code/11/ and
normalized at 50 keV to reproduce the element data of 10 mb,
and added the semidirect component calculated with the quick
gnash code/18,19/.
mt=103 (n,p)
Below 9 MeV, evaluated based on the experimental data of
Smith/14/. Above 9 MeV, calculated with the gnash code/13/
and normalized so as to be connected with Smith's experimental
data/14/.
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 egnash code/2/ to reproduce Dolja's
experimental data at 14.7 MeV /15/.
mt=111 (n,2p)
obtained from from the sincros-ii calculation made with the
the egnash code/2/.
mf=4 Angular distributions of secondary neutrons
mt=2 Elastic scattering
Calculated with the casthy code/11/.
mt=51-63 Inelastic scattering
Calculated with the casthy code and the dwuck code/12/.
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/16/.
mf=12 Photon production multiplicities and transition probability
arrays
mt=16, 22, 28, 51-62, 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/17/.
mt=102 was calculated with the casthy code/10/.
mf=14 Photon angular distributions
mt=16, 22, 28, 51-62, 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) ENSDF: Evaluated Nuclear Structure Data File, BNL/NNDC.
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) Mueller K.N. et al.: Nucl. Phys. A164, 97 (1971).
10) Mughabghab S.F. et al.: "Neutron Cross Sections", Vol.1,
Part A (1981).
11) Igarasi S. and Fukahori T.: JAERI 1321 (1991).
12) Kunz P.D.: Unpublished.
13) Young P.G. and Arthur E.D.: LA-6947 (1977).
14) Smith D.L. et al.: Nucl. Sci. Eng. 78, 420 (1981).
15) Dolja G.D. et al.: 1973 Kiev Conf. Vol.3, 131 (1973).
16) Kalbach C. : Phys. Rev. C37, 2350(1988).
17) Hida K.: JAERI-M 86-150 (1986) (in Japanese).
18) Young P.G. et al. : LA-12343-MS (1992).
19) Koning A.J. and Delaroche J.P. : ECN-RX-98-015 (1998).