22-TI- 48 KUR EVAL-SEP88 K.KOBAYASHI(KUR),H.HASHIKURA(TOK)
DIST-MAR02 REV3-FEB02 20020214
----JENDL-3.3 MATERIAL 2231
-----INCIDENT NEUTRON DATA
------ENDF-6 FORMAT
HISTORY
88-09 Compiled by T.Asami(nedac)
93-03 (4,91) changed into lab system.
93-12 JENDL-3.2
Data were mainly adopted from JENDL fusion file.
Compiled by T.Nakagawa
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
(3,1) revised
(3,2) re-calculated
(3,28,102,103) revised
(3,104,105,106,203,207) evaluated newly
(3,251) deleted
(4,2) re-evaluated
(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
***********************************************************
02-02 Covariances were estimated by T. Asami.
mf=1 General information
mt=451 Descriptive data and dictionary
mf=2 Resonance parameters
mt=151 Resolved resonance parameters
Resolved parameters for MLBW formula were given in the energy
region from 1.0e-5 eV to 300 keV. Parameters were taken from
ref./5/, for positive resonances. Parameters for negative
resonance were obtained so that the reproduced cross sections
for both scattering and capture gave the 2200 m/s values of
4.61+-0.2 and 7.84+-0.25 barns, respectively/5/. The scatter-
ing radius was assumed to be 4.2 fermi instead of 3.9 fermi in
ref./5/. Calculated 2200 m/sec cross sections and resonance
integrals are as follows:
2200 m/s cross section(b) res. integral(b)
elastic 4.32
capture 7.84 3.68
total 12.16
mf=3 Neutron cross sections
Below 300 keV, no background cross section was given.
For JENDL-3.2, all cross-section data except for the total,
capture and (n,a) were adopted from JENDL fusion file. The
calculation was made with sincros-ii system/2/ by adopting
Walter-Guss omp modified by Yamamuro/2/ for neutron, Perey omp
/6/ for proton, Lemos omp modified by Arthur and Young/7/ for
alpha, Lohr-Haeberli omp/8/ for deuteron, Becchettii-Greenlees
omp/9/ for triton and he-3, and standard level density
parameters of sincros-ii system.
mt=1 Total
Optical and statistical model calculation was made with
casthy code/10/. The optical potential parameters used are:
V = 50.75 - 0.120*En, Vso = 4.72 (MeV)
Ws = 10.9 - 0.234*En, Wv = 0.0 (MeV)
r = 1.26, rs = 1.02, rso = 1.16 (fm)
a = 0.52, aso = 0.52, b = 0.40 (fm)
In JENDL-3.1, the total cross section was not the same as this
calculation. For JENDL-3.2, it was replaced with the casthy
calculation.
For JENDL-3.3, the total cross sections were determined so as
to reproduce measured elemental data.
mt=2 Elastic scattering
Obtained by subtracting the sum of the partial cross sections
from the total cross section.
mt=4, 51-68, 91 Inelastic scattering
The cross sections were taken from JENDL fusion file. The
level scheme was based on ref./4/ Contributions of the direct
process were calculated for the levels marked with '*', using
deformation parameters compiled by Raman et al./11/ and
Spear/12/.
no. energy(MeV) spin-parity (direct process)
g.s. 0.0 0+
1 0.9835 2+ *
2 2.2956 4+ *
3 2.421 2+ *
4 2.9973 0+ *
5 3.224 3+
6 3.2398 4+ *
7 3.3332 6+
8 3.3588 3- *
9 3.3709 2+
10 3.5085 6+
11 3.6168 2+ *
12 3.6336 2+
13 3.6994 1+
14 3.711 1+
15 3.7386 1+
16 3.7825 4-
17 3.8028 1+
18 3.8522 3- *
Levels above 3.852 MeV were assumed to be overlapping.
mt=16 (n,2n)
Adopted from JENDL fusion file. Theoretical calculation was
made with sincros-ii.
mt=22 (n,na)
Obtained from from the sincros-ii calculation made with the
the egnash code/2/.
mt=28 (n,np)
Adopted from JENDL activation file/14/.
mt=102 Capture
Calculated with the casthy code/10/ and normalized to 4.3 mb
at 20 keV, and added the semidirect component calculated
with the quick gnash code/17,18/.
mt=103 (n,p)
Adopted from JENDL activation file/14/.
mt=107 (n,a)
Evaluated based on the experimental data.
mf=4 Angular distributions of secondary neutrons
mt=2
Calculated with the casthy code/10/, newly for JENDL-3.3.
mt=51-68
Taken from JENDL fusion file/1/.
mf=6 Energy-angle distributions of secondary particles
Taken from JENDL fusion file/1/.
- Energy distributions of secondary neutrons were replaced
by those calculated by egnash2. The ddx's of the
continuum neutrons were calculated by Kumabe's systema-
tics /3/ using f15tob /1/. The precompound/compound
ratio was calculated by the sincros-ii code system/2/.
mt=16, 22, 28, 91
Based on modified Kumabe's systematics/1/.
mt=203, 207
Based on Kalbach's 1988 systematics/13/.
mf=12 Photon production multiplicities and transition probability
arrays
mt=16, 22, 28, 51-68, 91,103, 104, 107
mt=51-68 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/15/.
mt=102 was calculated with the casthy code/10/.
mf=14 Photon angular distributions
mt=16, 22, 28, 51-68, 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/.
For 18-133.5 keV, based on the data measured by the Tokyo
Institute of Tech. group /19/.
mf=33 Covariances of cross sections /20/
mt=1
Based on experimental data. A chi-value was 5.86.
mt=4
Based on experimental data. A chi-value was 2.29.
mt=16
Based on experimental data.
mt=22
Based on systematics.
mt=28
Based on experimental data. A chi-value was 2.45.
mt=102
Based on experimental data. A chi-value was 3.52.
mt=103
Based on experimental data. A chi-value was 1.10.
mt=107
Based on experimental data. A chi-value was 0.82.
References
1) Chiba, S. et al.: JAERI-M 92-027, p.35 (1992).
2) Yamamuro, N.: JAERI-M 90-006 (1990).
3) Kumabe, I. et al.: Nucl. Sci. Eng., 104, 280 (1990).
4) ENSDF: Evaluated Nuclear Structure Data File, BNL/NNDC.
5) Mughabghab, S.F. et al.: " Neutron Cross Sections ", Vol.1,
Part A (1981).
6) Perey, F.G.: Phys. Rev., 131, 745 (1963).
7) Arthur, E.D. and Young, P.G.: LA-8626-MS (1980).
8) Lohr, J.M. and Haeberli W.: Nucl. Phys., A232, 381 (1974).
9) Becchetti, F.D. Jr. and Greenlees G.W.: "Polarization
Phenomena in Nucl. Reactions," Univ. Wisconsin Press, p.682
(1971).
10) Igarasi, S. and Fukahori, T.: JAERI 1321 (1991).
11) Raman, S., et al.: Atom. Data and Nucl. Data Tables 36, 1
(1987)
12) Spear, R.H.: Atom. Data and Nucl. Data Table, 42, 55 (1989).
13) Kalbach C. : Phys. Rev. C37, 2350(1988).
14) JAERI Nuclear Data Center : private communication (1996).
15) Hida K.: JAERI-M 86-150 (1986) (in Japanese).
17) Young P.G. et al. : LA-12343-MS (1992).
18) Koning A.J. and Delaroche J.P. : ECN-RX-98-015 (1998).
19) Igashira M.: private communication (1999).
20) Asami T.: private communication (2002).