ENTRY 31682 20090608 31393168200000001 SUBENT 31682001 20090608 31393168200100001 BIB 11 46 3168200100002 TITLE Kinetic-energy distribution in the reactor neutron 3168200100003 fission of U-232 and thermal neutron fission of Pu-241 3168200100004 and Cm-245 3168200100005 AUTHOR (A.Ramaswami, S.Prakash, S.B.Manohar,S.P.Dange, 3168200100006 P.P.Venkatesan, M.V.Ramaniah) 3168200100007 INSTITUTE (3INDTRM) Radiochemistry Division 3168200100008 REFERENCE (J,PR/C,16,716,1977) 3168200100009 FACILITY (REAC,3INDTRM) CIRUS reactor 3168200100010 INC-SOURCE (REAC) Thermal neutron flux of 1.4 10**13 n/(cm2s) 3168200100011 for 24 hours 3168200100012 DETECTOR (GELI) Activiation of first and second catcher foils 3168200100013 were analyzed either by direct gamma counting with a 3168200100014 Ge(Li) detector or by dissolving the foils and 3168200100015 chemically separating the desired fission product 3168200100016 activities employing standard radiochemical techniques.3168200100017 SAMPLE Covered with a 7.5 mu-m superpure Al foil followed by 3168200100018 a 25 mu-m superpure Al foil. The whole assembly was 3168200100019 wrapped in 25 mu-m thick Al foil. 3168200100020 * Thin uniform target of U-232: 3168200100021 Electrodeposited on goald coated Al foil; 3168200100022 The Cd cutoff ratio was approx. 0.50; 3168200100023 Isotopic composition: 3168200100024 U-232 99.14%, U-232 0.81% and U-234 0.009%. 3168200100025 * Thin uniform target of 10 mu-g/cm2; 3168200100026 Electrodeposited on a gold coated Al foils; 3168200100027 The Cd cutoff ratio was approx 200. 3168200100028 The isotopic compositions: 3168200100029 Pu-241 80.56%, Pu-240 10.88%, Pu-239 4.77%, 3168200100030 Pu-242 3.78%. 3168200100031 * Thin uniform Cm-245 target of 50 mu-g/cm2; 3168200100032 Electrodeposited on a gold covered Al foil; 3168200100033 The Cd cutoff ratio was approx 200. 3168200100034 The isotopic composition: 3168200100035 Cm-244 93.86%, Cm-246 4.13 %, Cm-245 2.01%. 3168200100036 As Cm-245 has (nth,f) cross section approx. 1660 3168200100037 times higher than that of Cm-244, 98% of the total 3168200100038 fission is from Cm-245. 3168200100039 METHOD (REC,FPGAM,RCHEM) 3168200100040 Recoil ranges were obtained from the measured 3168200100041 activities of the fission products in the first and 3168200100042 second catcher foil. Using the semiempirical formula 3168200100043 by Alexander et al.(J,PR,129,1471,1963) the kinetic 3168200100044 energy of fragment is determined from recoil ranges. 3168200100045 ADD-RES (RANGE) Recoil ranges in Table I and Fig.1 3168200100046 HISTORY (20090528C) Stefan Kopecky (EC-JRC-IRMM) 3168200100047 (20090608U) On 3168200100048 ENDBIB 46 0 3168200100049 COMMON 1 3 3168200100050 EN-DUMMY 3168200100051 EV 3168200100052 0.0253 3168200100053 ENDCOMMON 3 0 3168200100054 ENDSUBENT 53 0 3168200199999 SUBENT 31682002 20090608 31393168200200001 BIB 3 3 3168200200002 REACTION (92-U-232(N,F)ELEM/MASS,PRE,KE,LF+HF,MXW) 3168200200003 ERR-ANALYS No uncertainty given 3168200200004 STATUS (TABLE) Table II, J,PR/C,16,716,1977 3168200200005 ENDBIB 3 0 3168200200006 NOCOMMON 0 0 3168200200007 DATA 3 19 3168200200008 ELEMENT MASS DATA 3168200200009 NO-DIM NO-DIM MEV 3168200200010 38. 89. 175.9 3168200200011 38. 91. 178.1 3168200200012 40. 95. 186.6 3168200200013 40. 97. 190.7 3168200200014 42. 99. 192.6 3168200200015 44. 103. 188.6 3168200200016 47. 111. 165.0 3168200200017 48. 115. 163.5 3168200200018 50. 121. 179.3 3168200200019 50. 125. 191.0 3168200200020 51. 127. 190.5 3168200200021 53. 131. 188.3 3168200200022 53. 132. 188.3 3168200200023 53. 133. 183.3 3168200200024 54. 135. 177.6 3168200200025 56. 140. 182.2 3168200200026 58. 141. 169.8 3168200200027 58. 143. 161.3 3168200200028 60. 147. 166.6 3168200200029 ENDDATA 21 0 3168200200030 ENDSUBENT 29 0 3168200299999 SUBENT 31682003 20090608 31393168200300001 BIB 3 3 3168200300002 REACTION (94-PU-241(N,F)ELEM/MASS,PRE,KE,LF+HF,MXW) 3168200300003 ERR-ANALYS No uncertainty given 3168200300004 STATUS (TABLE) Table II, J,PR/C,16,716,1977 3168200300005 ENDBIB 3 0 3168200300006 NOCOMMON 0 0 3168200300007 DATA 3 18 3168200300008 ELEMENT MASS DATA 3168200300009 NO-DIM NO-DIM MEV 3168200300010 38. 91. 175.0 3168200300011 40. 97. 178.0 3168200300012 42. 99. 172.0 3168200300013 44. 103. 196.4 3168200300014 44. 105. 188.0 3168200300015 47. 111. 187.0 3168200300016 48. 115. 175.0 3168200300017 50. 121. 168.0 3168200300018 50. 125. 175.5 3168200300019 51. 127. 178.0 3168200300020 53. 131. 199.0 3168200300021 53. 132. 199.0 3168200300022 53. 133. 193.0 3168200300023 54. 135. 190.0 3168200300024 56. 140. 183.0 3168200300025 58. 141. 181.0 3168200300026 58. 143. 176.0 3168200300027 60. 147. 167.5 3168200300028 ENDDATA 20 0 3168200300029 ENDSUBENT 28 0 3168200399999 SUBENT 31682004 20090608 31393168200400001 BIB 3 3 3168200400002 REACTION (96-CM-245(N,F)ELEM/MASS,PRE,KE,LF+HF,MXW) 3168200400003 ERR-ANALYS No uncertainty given 3168200400004 STATUS (TABLE) Table II, J,PR/C,16,716,1977 3168200400005 ENDBIB 3 0 3168200400006 NOCOMMON 0 0 3168200400007 DATA 3 16 3168200400008 ELEMENT MASS DATA 3168200400009 NO-DIM NO-DIM MEV 3168200400010 38. 91. 182.2 3168200400011 40. 97. 189.4 3168200400012 42. 99. 188.5 3168200400013 44. 105. 195.7 3168200400014 47. 111. 202.6 3168200400015 48. 115. 202.7 3168200400016 50. 125. 188.5 3168200400017 51. 127. 195.0 3168200400018 53. 131. 201.1 3168200400019 53. 132. 199.0 3168200400020 53. 133. 195.3 3168200400021 54. 135. 195.1 3168200400022 56. 140. 187.5 3168200400023 58. 141. 175.7 3168200400024 58. 143. 175.2 3168200400025 60. 147. 168.7 3168200400026 ENDDATA 18 0 3168200400027 ENDSUBENT 26 0 3168200499999 SUBENT 31682005 20090608 31393168200500001 BIB 3 3 3168200500002 REACTION (92-U-232(N,F),PRE,AKE,LF+HF,MXW) 3168200500003 ERR-ANALYS (DATA-ERR) No source of uncertainties given 3168200500004 STATUS (TABLE) Table III, J,PR/C,16,716,1977 3168200500005 ENDBIB 3 0 3168200500006 NOCOMMON 0 0 3168200500007 DATA 2 1 3168200500008 DATA DATA-ERR 3168200500009 MEV MEV 3168200500010 169.0 2.0 3168200500011 ENDDATA 3 0 3168200500012 ENDSUBENT 11 0 3168200599999 SUBENT 31682006 20090608 31393168200600001 BIB 3 3 3168200600002 REACTION (94-PU-241(N,F),PRE,AKE,LF+HF,MXW) 3168200600003 ERR-ANALYS (DATA-ERR) No source of uncertainties given 3168200600004 STATUS (TABLE) Table III, J,PR/C,16,716,1977 3168200600005 ENDBIB 3 0 3168200600006 NOCOMMON 0 0 3168200600007 DATA 2 1 3168200600008 DATA DATA-ERR 3168200600009 MEV MEV 3168200600010 183.0 2.0 3168200600011 ENDDATA 3 0 3168200600012 ENDSUBENT 11 0 3168200699999 SUBENT 31682007 20090608 31393168200700001 BIB 3 3 3168200700002 REACTION (96-CM-245(N,F),PRE,AKE,LF+HF,MXW) 3168200700003 ERR-ANALYS (DATA-ERR) No source of uncertainties given 3168200700004 STATUS (TABLE) Table III, J,PR/C,16,716,1977 3168200700005 ENDBIB 3 0 3168200700006 NOCOMMON 0 0 3168200700007 DATA 2 1 3168200700008 DATA DATA-ERR 3168200700009 MEV MEV 3168200700010 188.5 3.0 3168200700011 ENDDATA 3 0 3168200700012 ENDSUBENT 11 0 3168200799999 ENDENTRY 7 0 3168299999999