22-Ti- 50
22-Ti- 50 KUR EVAL-SEP88 K.KOBAYASHI(KUR),HASHIKURA(TOK)
DIST-MAY10 20090805
----JENDL-4.0 MATERIAL 2237
-----INCIDENT NEUTRON DATA
------ENDF-6 FORMAT
HISTORY
88-09 Compiled by T.Asami(nedac)
93-11 JENDL-3.2
Data were mainly adopted from JENDL fusion file.
Compiled by T.Nakagawa
00-03 Reevaluation was made by T.Asami.
01-07 Compiled by K.Shibata (ndc/jaeri)
***** modified parts for JENDL-3.3 ********************
(2,151) modified
(3,2) re-calculated
(3,102,107) revised
(3,104,105,106,203,207) evaluated newly
(3,251) deleted
(4,2) revised
(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
***********************************************************
09-08 Compiled by K. Shibata.
The resolved resonance parameters were revised. The upper
limit of the resolved resonance region was changed to
587.0 keV from 300 keV. As a result, the total, elastic
scattering and capture cross sections were revised between
300 and 587.0 keV.
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 value of
3.7+-0.3 and 0.179+-0.003 barns, respectively/5/. The
scattering radius was assumed to be 4.5 fermi.
For JENDL-4, the resonance parameters were modified by Kawano
/19/.
Thermal cross sections and resonance integrals at 300 K
----------------------------------------------------------
0.0253 eV res. integ. (*)
(barns) (barns)
----------------------------------------------------------
Total 3.9361E+00
Elastic 3.7566E+00
n,gamma 1.7953E-01 8.8317E-02
----------------------------------------------------------
(*) Integrated from 0.5 eV to 10 MeV.
mf=3 Neutron cross sections
Below 300 keV, no background cross section was given.
The calculation with sincros-ii system/2/ was made 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
Below 300 keV, created from the resonance parameters.
Above 300 keV, optical and statistical model calculation was
made with the 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)
mt=2 Elastic scattering
Obtained by subtracting the sum of the partial cross sections
from the total cross section.
mt=4, 51-61, 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 1.5538 2 + *
2 2.6749 4 + *
3 3.1987 6 + *
4 3.771 2 +
5 3.8681 0 +
6 3.9748 4 +
7 4.1473 4 + *
8 4.1718 3 +
9 4.1723 2 + *
10 4.311 2 + *
11 4.4105 3 - *
Levels above 4.411 MeV were assumed to be overlapping.
mt=16, 22, 28, 103 (n,2n), (n,na),(n,np), (n,p)
Adopted from JENDL fusion file. theoretical calculation was
made with sincros-ii. The results were normalized to
(n,2n) 1.0 b at 14.9 MeV (systematics by Kasugai/13/),
(n,p) 0.0134 b at 14.94 MeV measured by Ikeda et al./14/,
mt=102 Capture
Below 300 keV, created from the resonance parameters.
Above 300 keV, calculated with the casthy code/10/ and
Normalized to 2.3 mb at 25 keV. Added the semidirect component
calculated with the quick gnash code/17,18/.
mt=107 (n,a)
Obtained from from the sincros-ii calculation made with the
the egnash code/2/.
mf=4 Angular distributions of secondary neutrons
mt=2
Calculated with the casthy code/10/,newly for JENDL-3.3.
mt=51-61
Taken from JENDL fusion file/1/.
Calculated with the casthy code/10/.
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/3/.
mt=203, 207
Based on kalbach's 1988 systematics/15/.
mf=12 Photon production multiplicities and transition probability
arrays
mt=16, 22, 28, 51-61, 91,103, 104, 107
mt=51-61 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/16/.
mt=102 was calculated with the casthy code/10/.
mf=14 Photon angular distributions
mt=16, 22, 28, 51-61, 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) 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) Kasugai, Y.: private communication (1993).
14) Ikeda, Y. et al.: JAERI 1312 (1988).
15) Kalbach C. : Phys. Rev. C37, 2350(1988).
16) 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) Kawano T.: Private communication (2009).