80-Hg-204 JNDC EVAL-SEP97 K.SHIBATA, T.FUKAHORI, S.CHIBA,+
JNST 34, 1171 (1997) DIST-JUL13 20130308
----JENDL-4.0u1 MATERIAL 8049
-----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.
10-01 Modified by K.Shibata for JENDL-4.0.
(1,451) Updated.
(2,151) Unresolved parameters added.
(3,1) Re-calculated from partial cross sections.
(3,4) Re-calculated from partial cross sections.
13-03 Modified by K.Shibata for JENDL-4.0u1
(5,16) Spectrum at 8 MeV was revised to avoid negative
Kerma factors.
(5,17) Spectrum at 14 MeV was revised to avoid
negative Kerma factors.
mf=1 General information
mt=451 Descriptive data and dictionary
mf=2 Resonance parameters
mt=151 Resolved resonances
No resonance parameter was given. R=9.5 fm /1/
was selected to reproduce the thermal elastic
scattering cross section of natural Mercury measured by
Hibdon+ /2/.
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For JENDL-4.0, the unresolved resonance parameters were
obtained so as to reproduce the total and capture cross
sections in the energy region from 1.0 keV to 400 keV.
The parameters should be used only for self-shielding
calculations.
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Calculated 2200-m/s cross sections and res. integrals.
2200-m/s res. integ.
elastic 29.39 b -
capture 0.43 b 2.72 b
total 29.82 b
mf=3 Neutron cross sections
mt=1 Total
Spherical optical model calculation was made by
casthy code /3/. 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=4,51-68,91 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. 0.4365 2 + L=2, beta=0.069
2. 1.1283 4 + L=4, beta=0.049
3. 1.8286 1 +
4. 1.8414 1 +
5. 1.8513 2 +
6. 1.9477 2 +
7. 1.9890 2 +
8. 2.0888 1 +
9. 2.1408 1 +
10. 2.1908 6 + L=6, beta=0.013
11. 2.2628 5 - L=5, beta=0.033
12. 2.3004 7 - L=7, beta=0.021
13. 2.3961 2 +
14. 2.6790 3 - L=3, beta=0.089
15. 2.7241 5 +
16. 2.7267 2 +
17. 2.7603 3 +
18. 2.8128 3 - L=3, beta=0.046
Continuum levels were assumed above 2.813 MeV.
Following levels were included in the continuum.
3.0210 L=4, beta=0.016
3.1120 L=4, beta=0.016
3.2270 L=5, beta=0.020
3.3150 L=3, beta=0.048
3.3640 L=5, beta=0.049
4.1130 L=4, beta=0.039
mt=102 Capture
The casthy calculation was adopted.
mf=4 Angular distributions of secondary neutrons
mt=2,51-68
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=16,17,22,28,51-68,91,102,103,104,107
Multiplicities were calculated with casthy and sincros-ii.
mf=14 Photon angular distributions
mt=16,17,22,28,51-68,91,102,103,104,107
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).