83-Bi-209
83-BI-209 JAERI EVAL-MAY89 N.YAMAMURO,A.ZUKERAN,JENDL-3 C.G.
DIST-MAR02 REV3-SEP01 20010928
----JENDL-3.3 MATERIAL 8325
-----INCIDENT NEUTRON DATA
------ENDF-6 FORMAT
HISTORY
89-04 Evaluation was performed for JENDL-3.
89-05 Compiled by K.Shibata and T.Narita (jaeri).
94-02 JENDL-3.2.
Compiled by T.Nakagawa (ndc/jaeri)
***** Modified parts for JENDL-3.2 ********************
(3,2), (3,4), (3,58) Around 3 MeV.
(4,16-91), (5,16-91) Taken from JENDL fusion file.
(12,102) From energy balance.
***********************************************************
-------------------------------------------------------------
JENDL fusion file /1/ (as of sep. 1993)
Evaluated and compiled by S. Chiba (ndc/jaeri)
Data were taken from JENDL-3.1 except for the following:
The neutron energy distributions of mt=16, 17, 22, 28
and 91 were replaced with calculated values with snicros-
II/2/. However, those of mt=16 and 91 above 17 MeV were
taken from JENDL-3.1 because they reproduced the data
measured by Matsuyama et al./3/ at 18 MeV better than the
sincros-II calculation. The angular distributions of
continuum neutrons were created by f15tob/1/. The MSD/MSC
ratio was taken from the sincros-II calculation, and
Kumabe's systematics/4/ was used.
Optical-model, level-density and other parameters used
in the sincros-ii calculation are described in ref./2/.
Level schemes were determined on the basis of ENSDF/5/.
-------------------------------------------------------------
01-09 JENDL-3.3
Compiled by K.Shibata (jaeri).
***** Modified parts for JENDL-3.3 **********************
(1,451) Updated.
(3,1) Re-calculated.
(3,2) Re-calculated.
(3,102) Revised above 200 keV.
(3,203-207) Calculated.
(3,251) Deleted.
(4,2) Tranformation matrix deleted.
(4,16-91) Deleted.
(5,16-91) Deleted.
(6,16-91) Taken from JENDL fusion file.
(6,203-207) Taken from JENDL fusion file.
***********************************************************
mf=1 General information
mt=451 Descriptive data and dictionary
mf=2 Resonance parameters
mt=151 Resolved resonance parameters for MLBW formula
Parameters were mainly taken from the work of Mughabghab
et al. /6/.
Resonance region : 1.0e-5 eV to 200 keV.
Scattering radius: 9.68 fm
Calculated 2200-m/s cross sections and res. integrals
2200-m/s res. integ.
elastic 9.298 b -
capture 0.034 b 0.199 b
total 9.331 b -
mf=3 Neutron cross sections
mt=1 Total
Below 200 keV : Background cross sections given between
30 kev and 200 keV.
200 keV to 20 MeV: Based on the experimental data
/7,8,9/.
mt=2 Elastic scattering
(total) - (reaction cross section)
mt=3 Non elastic
Sum of mt=4, 16, 17, 22, 28, 102, 103, 104, 107
mt=4,51-62,91 Inelastic scattering
Statistical model calculations were made with the sincros
system /2/ using the modified Walter-Guss potential
parameters for neutrons. For mt=51,52,58,62, the experi-
mental data of Smith et al./10/ were adopted below 5 MeV.
The calculated cross section of mt=91 was modified so as
to reproduce the measurements of the total inelastic cross
section below 8 MeV. The direct-process components were
considered for the levels of mt=51,52,58,91 by the DWBA
calculations.
The level scheme is given as follows:
no. energy(MeV) spin-parity
g.s. 0.0 9/2 -
1. 0.8964 7/2 -
2. 1.6085 13/2 +
3. 2.4300 1/2 +
4. 2.4920 3/2 +
5. 2.5645 9/2 +
6. 2.5830 7/2 +
7. 2.5990 11/2 +
8. 2.6017 13/2 +
9. 2.6170 5/2 +
10. 2.7411 15/2 +
11. 2.7660 5/2 +
12. 2.8220 5/2 -
Levels above 2.85 MeV were assumed to be overlapping.
mt=16,17,22,28,103,104,107 (n,2n),(n,3n),(n,n'a),(n,n'p),(n,p)
(n,d) and (n,a) cross sections
Calculated with sincros/2/. Optical potential parameters
for proton, alpha-particle and deuteron were taken from
the works of Perey/11/, Lemos/12/ and Lohr and Haeverli
/13/, respectively. The calculated (n,p) cross section
was multiplied by 0.3333 in order to fit to the
experimental data /14,15,16/ around 14 MeV.
mt=102 Radiative capture cross section
1.0e-5 eV to 200 keV: Resonance parameters given between
30 keV and 200 keV.
200 keV to 3 MeV: calculated with the casthy code/17/.
The calculation was normalized to
4 mb at 100 keV.
3 MeV to 20 MeV: Based on the measurements./18,19,20/.
******* For JENDL-3.3 **********************************
At 200 keV, a background cross section of 1.5 mb was set.
Between 200 keV and 3 MeV, the cross sections were reduced
by a factor of 0.52 so as to reproduce the data measured
at 500 keV /23/.
**********************************************************
mt=203 : Total proton production
Sum of mt=28 and 103.
mt=204 : Total deuteron production
Equal to mt=104.
mt=207 : Total alpha production
Sum of mt=22 and 107.
mf=4 Angular distributions of secondary neutrons
mt=2,51-62
Calculated with casthy for equilibrium process.
the components of the direct process were added to
the levels of mt=51,52,58 by using the dwuck code /21/.
mf=6 Energy-angle distributions of secondary particles
mt=16, 17, 22, 28, 91
Based on Kumabe's systematics/1,4/.
mt=203,204,207
Based on Kalbach's systematics/1,22/.
mf=12 Photon production multiplicities
mt=3 (above 200 keV)
Calculated with sincros.
mt=102 (below 200 keV)
Calculated from energy balance.
mf=14 Photon angular distributions
mt=3,102
Assumed to be isotropic.
mf=15 Photon energy distributions
mt=3,102
Calculated with sincros.
References
1) Chiba, S. et al.: JAERI-M 92-027, p.35 (1992).
2) Yamamuro, N.: JAERI-M 90-006 (1990).
3) Matsuyama, S. et al.: JAERI-M 92-027, p.309 (1992).
4) Kumabe, I. et al.: Nucl. Sci. Eng., 104, 280 (1990).
5) ENSDF: Evaluated Nuclear Structure Data File, BNL/NNDC.
6) Mughabghab S.F.: "Neutron Cross Sections, Vol. 1, Part B",
Academic Press (1984).
7) Foster, Jr., D.G. and Glasgow, D.W.: Phys. Rev., C3, 576
(1971).
8) Smith, A.B., et al.: Nucl. Sci. Eng., 41, 63 (1970).
9) Cierjacks, S., et al.: "High Resolution Total Neutron
Cross-Sections between 0.5 and 30 MeV", KfK-1000, (1968).
10) Smith, A., et al.: Nucl. Sci. Eng., 75, 69 (1980).
11) Perey, F.G.: Phys. Rev. 131, 745 (1963).
12) Lemos, O.F.: "Diffusion Elastique de Particules Alpha de
21 a 29.6 MeV sur des Noyaux de la Region Ti-Zn", Orsay
report, Series A., No. 136, (1972).
13) Lohr, J.M. and Haeberli, W.: Nucl. Phys. A232, 381 (1974).
14) Coleman, R.F., et al.: Proc. Phys. Soc.(London), 73, 215
(1959).
15) Poularikas, A. and Fink, R.W.: Phys. Rev., 115, 989 (1959).
16) Belovitckij, G.E., et al.: Proc. 3rd All Union Conf. Neutron
Physics, Kiev, 1975, 4, 209 (1976).
17) Igarasi, S. and Fukahori, T.: JAERI 1321 (1991).
18) Budnar, M., et al.: "Prompt Gamma-ray Spectra and Integrated
Cross Sections for the Radiative Capture of 14 MeV neutrons
for 28 Natural Targets in the Mass Region from 12 to 208",
INDC(YUG)-6,(1979).
19) Csikai, J., et al.: Nucl. Phys., A95, 229 (1967).
20) Bergqvist, I., et al.: Nucl. Phys., A120, 161 (1968).
21) Kunz, P.D.: Univ. Colorado (1974).
22) Kalbach, C. and Mann, F.M.: Phys. Rev., C23, 112 (1981).
23) Igashira, M.: Private communication (2001).