17-Cl- 37 KHI EVAL-MAR94 T.WATANABE DIST-MAY10 20090828 ----JENDL-4.0 MATERIAL 1731 -----INCIDENT NEUTRON DATA ------ENDF-6 FORMAT =========================================================== The data were taken from JENDL-3.3. =========================================================== HISTORY 94-3 Newly evaluated 00-11 JENDL-3.3 ***** Modified parts for JENDL-3.3 ************************* (1,451) Updated. (3,251) Deleted. (4,2) Transformation matrix deleted. (5,16-91) Distributions at threshold were modified. ************************************************************ mf=1 General information mt=451 Comments and dictionary mf=2 Resonance parameters(below 202.0keV) mt=151 resolved resonance parameters Resolved resonance parameters for MLBW formula with varing scat- ering radius. Negative energy level data were adjusted to reproduce 2200m/s cross sections. Evaluation was mainly based on Macklin's/1/ data and Mughabghab's/2/ compilation. calculated 2200-m/s cross sections and res. integrals (barns) 2200 m/s res. integ. total 1.583 - elastic 1.15 - capture 0.433 0.204 mf=3 Neutron cross sections Below 202 keV, resonance parameters were given. Above 202 keV, the total, elastic and inelastic scattering, and capture cross sections were calculated with the optical and statistical model code casthy/3/. Direct/semidirect cross section normalized to 0.286mb at 14 MeV were corrected to casthy's results/4/. Optical model parameters used in casthy calculation were as follows. depth (MeV) radius(fm) diffuseness(fm) ---------------------- ------------ --------------- V = 46.68-0.3459E , r0 = 4.8317 , a0 = 0.308 Ws = 3.584+1.224E , rs = 4.7751 , as = 0.338 Vso= 6.2 , rso= 3.9987 , aso= 0.638 The level scheme was adopted from ENSDF file/5/. no. energy(MeV) spin-parity beta2/beta3 gr. 0.0 3/2 + 1 1.7266 1/2 + 0.2 2 3.0866 5/2 + 0.2 3 3.1033 7/2 - 0.25 4 3.6260 3/2 + 0.15 5 3.7078 3/2 + 0.15 6 3.7409 5/2 - 0.25 7 4.0099 9/2 - 0.2 8 4.0163 3/2 + 0.15 9 4.1766 3/2 - 0.2 10 4.2689 1/2 + 0.15 11 4.2726 7/2 - 0.2 12 4.3963 5/2 + 0.1 13 4.4600 7/2 - 14 4.5460 11/2 - 15 4.7700 13/2 + 16 4.8012 5/2 + 17 4.8109 7/2 + 18 4.8376 5/2 + 19 4.8540 1/2 - 20 4.9042 7/2 + 21 4.9210 9/2 - 22 4.9230 13/2 + 23 4.9608 3/2 + 24 4.9740 13/2 + 25 5.0093 5/2 + 26 5.0552 5/2 + 27 5.0591 3/2 - Levels above 5.06 MeV were assumed to be overlapping. Parameters for the composite level density formula of Gilbert- Cameron were evaluated. Spin cut-off parameter c1 was taken as 0.146. Cl- 37 Cl- 38 -------- -------- a (1/MeV) 5.564 6.299 spin cut-off param. 3.824 4.142 pairing energy (MeV) 2.040 0.0 normalization factor 389.80 453.22 e-joint (MeV) 7.099 3.313 The capture cross section was adjusted to dovbenkos data/6/. mt=16,22,28,32,33,103,104,105,106,107 (n,2n),(n,na),(n,np),(n,nd),(n,nt),(n,p),(n,d),(n,t), (n,he-3),(n,a) were evaluated with modified egnash-2/7/ using f2=0.5 and following optical potential neutron :same as used in casthy proton :Perey's omp/8/ deutron :Pperey-Perey's omp/9/ triton :Ragaini's omp/10/ he-3 :Luetzeshwab's omp/11/ alpha :Bock's omp/12/ and normalized to following data. (n,na) 3.93 mb systematics/13/ (n,p) 22.3 mb Kawade's data/14/ (n,d) 8.18 mb systematics (n,t) 0.84 mb systematics (n,a) 31.5 mb av. exp. data/15,16,17/ mf=4 Angular distributions of secondary neutrons mt=2,16,22,28,32,51-77,91 Elastic and inelastic scattering cross section,(n,2n),(n,na), (n,np) and (n,nd) Angular distributions were calculated with casthy for ela- stically and inelastically scattered neutrons. Direct inelastic contribution were calculated with dwucky/18/. Deformation parameters used in dwucky calculation were evaluated from compilations/19,20/ and ENSDF half life data. As for (n,2n),(n,na),(n,np) and (n,nd) isotropic distributions were assumed. mf=5 Energy distributions of secondary neutrons mt=16,22,28,32,91 For (n,2n),(n,na),(n,np),(n,nd) and continum inelastic scattering cross sections, secondary neutron energy distribution were calculated with egansh-2. References 1)R.L.Macklin et. at., PR C29,1996(1984) 2)S.F.Mughabghab et. al., Neutron Cross Section Vol.1 Part A Academic Press(1981) 3)S.Igarasi,T.Fukahori JAERI-1321 (1991) 4)T.Nakagawa CAPDIR manual 5)Evaluated Nuclear Structural Data File 6)A.G. Dovbenko et al. AE 23,151(1967) 7)N.Yamamuro JAERI-M 90-006(1991) 8)F.G.Perey PR 131, 745(1963) 9)C.M.Perey,F.G.Perey PR 132, 752(1963) 10)R.C.Ragaini et. al. PR C2,1020(1970) 11)J.W.Luetzelscfwab et.al PR 180,1023(1964) 12)R.Bock et. al. NP A92, 539(1967) 13)R.A.Forrest AERE-R 12419(1986) 14)K.Kawade et al. JAERI-M 90-171(1990) 15)R.Prasad NP 85,476(1966) 16)I.N.Ngoc Ngoc 17)R.S.Scalan et al. NP 9,334(1958) 18)N.Yamamuro JAERI-M 88-140(1988) 19)S.Raman et.al. AND 42,1(1989) 20)R.H.Spear AND 42,55(1989)