80-HG-198 JNDC EVAL-SEP97 K.SHIBATA, T.FUKAHORI, S.CHIBA,+
JNST 34, 1171 (1997) DIST-MAR02 20020208
----JENDL-3.3 MATERIAL 8031
-----INCIDENT NEUTRON DATA
------ENDF-6 FORMAT
HISTORY
97-09 Evaluation was performed for JENDL-3.3.
97-10 Compiled by T.Fukahori (jaeri).
99-04 Comments were added by T.Fukahori
01-07 Modified by K.Shibata for JENDL-3.3.
(3,251) deleted.
(4,2) transformation matrix deleted.
(5,16-91) INT=22.
mf=1 General information
mt=451 Descriptive data and dictionary
mf=2 Resonance parameters
mt=151 Resolved resonances
Resonance region = 1.0e-5 eV to 459.14 eV
Parameters for the multilevel Breit-Wigner formula
were adopted from the compilation by Mughabghab+ /1/.
R=10.7 fm was selected to reproduce the thermal elastic
scattering cross section of natural Mercury measured by
Hibdon+ /2/.
calculated 2200-m/s cross sections and res. integrals.
2200-m/s res. integ.
elastic 12.78 b -
capture 1.99 b 74.36 b
total 14.77 b
mf=3 Neutron cross sections
mt=1 Total
Below 459.14 eV , no background cross section was given.
Spherical optical model calculation was made by
casthy code /3/ above 459.14 eV. Modified Walter-Guss
potential parameters /4,5/ were used.
mt=2 Elastic scattering
Given as total minus nonelastic cross sections.
mt=16,17,22,28,103,104,107
(n,2n),(n,3n),(n,n'a),(n,n'p),(n,p),(n,d),(n,a)
Calculated by scincros-ii /4/ with the following
parameters.
optical potential parameters
neutron : modified Walter-Guss /4,5/
proton : combined Perey /6/ and Walter-Guss
alpha : Lemos /7/ modified by Arthur-Young /8/
deuteron: Lohr-Haeberli /9/
level density parameters
nuclei a(1/MeV) pair(MeV) t(MeV) Ex(MeV) Ec(MeV)
Hg-194 21.5 2.00 0.42 3.66 2.89
Hg-195 21.0 0.87 0.59 5.45 0.89
Hg-196 20.5 1.71 0.49 4.36 2.50
Hg-197 20.0 0.87 0.63 6.00 1.03
Hg-198 19.5 1.66 0.63 6.45 1.91
Hg-199 18.0 0.87 0.70 6.48 0.75
Hg-200 17.0 1.69 0.75 7.81 2.19
Hg-201 16.0 0.87 0.79 7.22 0.77
Hg-202 15.0 1.58 0.84 8.35 1.79
Hg-203 14.5 0.87 0.83 7.02 0.58
Hg-204 14.0 1.28 0.82 6.88 2.81
Hg-205 13.5 0.87 0.84 6.59 1.86
Au-195 21.0 0.84 0.57 5.05 1.11
Au-196 20.5 0.00 0.43 1.63 0.60
Au-197 19.6 0.79 0.58 4.70 1.26
Au-198 19.1 0.00 0.62 4.52 0.57
Au-199 18.0 0.82 0.65 5.52 1.16
Au-200 17.0 0.00 0.64 4.07 0.47
Au-201 15.5 0.71 0.73 5.53 0.90
Au-202 15.0 0.00 0.77 5.40 0.00
Au-203 14.0 0.41 0.82 6.01 0.00
Au-204 13.0 0.00 0.87 5.84 0.00
Pt-192 23.2 1.84 0.58 7.15 1.44
Pt-193 22.5 0.71 0.58 5.64 0.52
Pt-194 21.0 1.55 0.59 6.28 1.67
Pt-195 21.0 0.71 0.61 5.69 0.66
Pt-196 20.0 1.50 0.58 5.63 1.97
Pt-197 18.9 0.71 0.67 6.11 0.60
Pt-198 18.7 1.53 0.65 6.53 1.52
Pt-199 18.5 0.71 0.67 6.09 0.51
Pt-200 18.0 1.42 0.66 6.29 0.00
Pt-201 17.5 0.71 0.68 5.66 0.00
mt=4,51-69,91 Inelastic scattering
The casthy and sincros-ii calculations were adopted. the
direct-process component was considered by the DWBA theory.
Deformation parameters were taken from ref. /10/ and
listed in the table below for adopted levels.
the level scheme is given as follows:
no. energy(MeV) spin-parity deformation-parameter
g.s. 0.0 0 +
1. 0.4118 2 + L=2, beta=0.110
2. 1.0485 4 + L=4, beta=0.023
3. 1.0877 2 + L=2, beta=0.018
4. 1.4015 0 + L=0, beta=0.013
5. 1.4194 2 +
6. 1.5485 0 +
7. 1.6124 2 +
8. 1.6356 5 - L=5, beta=0.027
9. 1.6833 7 - L=7, beta=0.013
10. 1.7600 1 +
11. 1.8158 6 +
12. 1.8325 2 +
13. 1.8349 4 + L=4, beta=0.049
14. 1.8472 3 +
15. 1.8588 2 +
16. 1.8993 1 +
17. 1.9014 2 +
18. 1.9097 6 -
19. 1.9108 9 -
Continuum levels were assumed above 1.911 MeV.
Following levels were included in the continuum.
1.9300 L=3, beta=0.031
2.1340 L=5, beta=0.032
2.3316 L=4, beta=0.030
2.4870 L=3, beta=0.058
2.5350 L=3, beta=0.043
mt=102 Capture
Below 459.14 eV, no background cross section was given.
The casthy calculation was adopted above 459.14 eV.
mf=4 Angular distributions of secondary neutrons
mt=2,51-69
Optical and statistical-model calculations were adopted.
The DWBA calculations were added.
mt=16,17,22,28,91
Calculated with sincros-ii.
mf=5 Energy spectrum of secondary neutron
mt=16,17,22,28,91
Calculated with sincros-ii.
mf=12 Photon multiplicities and transition probability arrays
mt=16,17,22,28,51-69,91,102,103,104,107
Multiplicities were calculated with casthy and sincros-ii.
mf=14 Photon angular distributions
mt=16,17,22,28,51-69,91,102,103,104,107
Assumed to be isotropic.
mf=15 Photon energy spectra
mt=16,17,22,28,91,102,103,104,107
Calculated with casthy and sincros-ii.
References
1) Mughabghab S.F. et al.: "Neutron Cross Sections", Vol.1,
Part B, Academic Press (1984).
2) Hibdon C.T. et al.: Phys. Rev., 82, 560 (1951).
3) Igarasi S. and Fukahori T.: JAERI-1321 (1991).
4) Yamamuro N.: JAERI-M 90-006 (1990).
5) Walter R.L. and Guss P.P.: Proc. Int. Conf. on Nucl. Data
for Basic and Applied Sci., Santa Fe, May 13-17, 1985,
p.1079 (1986).
6) Perey F.G.: Phys. Rev., 131, 745 (1963).
7) Lemos O.F.: Orsay Rep., Ser. A. No. 136 (1972).
8) Arthur E.D. and Young P.G.: LA-8626-MS (1980).
9) Lohr J.M. and Haeberli W.: Nucl. Phys., A232, 381 (1974).
10) Hogenbirk A. et al: Nucl. Phys., A524, 251 (1991).