ENTRY 30437 20211108 32033043700000001 SUBENT 30437001 20211108 32033043700100001 BIB 12 44 3043700100002 INSTITUTE (3INDTRM) 3043700100003 REFERENCE (J,JIN,41,1649,1979) Final publication 3043700100004 (P,BARC-900,87,1976) Brief, table, graph given 3043700100005 (P,BARC-872,104,1976) Preliminary results 3043700100006 (C,75CALCUTTA,2,141,1975) Data on graphs 3043700100007 AUTHOR (A.Ramaswami,S.P.Dange,Satya Prakash,M.V.Ramaniah) 3043700100008 (R.Kannabiran,A.G.C.Nair) 3043700100009 TITLE Mass yield from thermal neutron induced fission 3043700100010 of Cm-245 3043700100011 FACILITY (REAC,3INDTRM) CIRUS reactor 3043700100012 INC-SPECT Thermal reactor spectrum. The cadmium-ratio for U-235 3043700100013 and Cm-245 is about 200 in irradiation position. 3043700100014 SAMPLE (96-CM-245,ENR=0.9386) 3043700100015 Curium purified free of plutonium and fission products.3043700100016 Curium (approx. 50 micrograms/cm2) and uranium (approx.3043700100017 5 micrograms/cm2) electrodeposited on gold-plated alu- 3043700100018 minum foils, wrapped in superpure Al-catcher-foils. 3043700100019 Isotopic composition: 3043700100020 Curium sample Cm-244 93.86% 3043700100021 Cm-245 2.01% 3043700100022 Cm-246 4.13% 3043700100023 Uranium sample 90% U-235 3043700100024 METHOD Yield determined by Th 'R-value' method relative to 3043700100025 U-235 thermal fission yields (see EXFOR 30437.002). 3043700100026 (REC) Fission fragments were collected by the 'thin- 3043700100027 target-recoil-catcher' technique. 3043700100028 (GSPEC) High yield products were measured by direct 3043700100029 gamma counting. 3043700100030 (CHSEP) For low yield products radiochemical separation3043700100031 was employed followed by beta- or gamma-counting 3043700100032 DETECTOR (GELI) 3043700100033 (PROPC) 3043700100034 STATUS (TABLE) Table 2 of J.Inorg.Nucl.Chem.41,1649 3043700100035 (APRVD), R.Ramaswami, on 1980-03-19 3043700100036 HISTORY (19780228C) OS. Data from progr.report compiled. 3043700100037 (19800201A) ML. Entry revised according final public. 3043700100038 (20090310A) SD:Updated to new date formats,lower case. 3043700100039 (20211018A) VS. Reference 75CALCUTTA,2,141,1974 added. 3043700100040 002 corrected. 3043700100041 CORRECTION Since 99% of all fissions in the curium-sample 3043700100042 will be from Cm-245, no corrections for contributions 3043700100043 from fissions of other curium isotopes were applied. 3043700100044 No information is given on corrections due to chemical 3043700100045 separation procedures and sample counting. 3043700100046 ENDBIB 44 0 3043700100047 COMMON 1 3 3043700100048 EN-DUMMY 3043700100049 EV 3043700100050 2.3500E-02 3043700100051 ENDCOMMON 3 0 3043700100052 ENDSUBENT 51 0 3043700199999 SUBENT 30437002 20211108 32033043700200001 BIB 6 24 3043700200002 REACTION (96-CM-245(N,F)ELEM/MASS,CUM,FY,,MXW) 3043700200003 ANALYSIS From measured fission product activities ratios 3043700200004 'R-values' calculated as 3043700200005 R=a(99,235)*a(X,245)/(a(99,245)*a(X,235)) 3043700200006 where 99,X,235 and 245 have the meaning explained 3043700200007 under method above. 3043700200008 Yields for product X from fission of Cm-245 (=Y(X,245))3043700200009 are calculated as 3043700200010 Y(X,245)=R*Y(99,245)*Y(X,235)/Y(99,235), where 3043700200011 Y(99,245) is an assumed value for the Cm-245 fission 3043700200012 yield of Mo-99 3043700200013 Y(X,235) and Y(99,235) are the U-235 fission yields of 3043700200014 fission product X and Mo-99 respectively. 3043700200015 MONITOR ((MONIT1)96-CM-245(N,F)42-MO-99,CUM,FY,,MXW) 3043700200016 Internal standard before normalization 3043700200017 ((MONIT2)92-U-235(N,F)ELEM/MASS,CUM,FY,,MXW) 3043700200018 Taken from the evaluation of Meek and Rider 3043700200019 MONIT-REF ((MONIT2),M.E.Meek+,R,NEDO-12154-1,1974) 3043700200020 ERR-ANALYS The present yield determination is 5-10% for asymmetric3043700200021 fission products and 10-15% for symmetric fission 3043700200022 products. 3043700200023 (ERR-S) Total statistical uncertainty: 5% 3043700200024 HISTORY (20211018A) VS. MISC-COL and MISC data deleted. 3043700200025 ERR-ANALYS corrected. 3043700200026 ENDBIB 24 0 3043700200027 COMMON 2 3 3043700200028 MONIT1 ERR-S 3043700200029 PC/FIS PER-CENT 3043700200030 4.09E+00 5. 3043700200031 ENDCOMMON 3 0 3043700200032 DATA 4 19 3043700200033 MASS ELEMENT DATA MONIT2 3043700200034 NO-DIM NO-DIM PC/FIS PC/FIS 3043700200035 89. 38. 0.820 4.85 3043700200036 91. 38. 0.932 5.916 3043700200037 95. 40. 2.14 6.459 3043700200038 97. 40. 2.89 5.945 3043700200039 99. 42. 4.00 6.133 3043700200040 103. 44. 6.55 3.135 3043700200041 111. 47. 3.84 0.0185 3043700200042 115. 48. 0.418 0.00918 3043700200043 121. 50. 0.025 0.01296 3043700200044 125. 50. 0.074 0.0136 3043700200045 127. 51. 0.45 0.1284 3043700200046 131. 53. 2.93 2.835 3043700200047 132. 52. 3.74 4.188 3043700200048 133. 54. 5.34 6.77 3043700200049 135. 54. 6.90 6.633 3043700200050 140. 56. 5.537 6.316 3043700200051 141. 58. 4.99 5.887 3043700200052 143. 58. 4.42 5.969 3043700200053 147. 60. 2.50 2.283 3043700200054 ENDDATA 21 0 3043700200055 ENDSUBENT 54 0 3043700299999 ENDENTRY 2 0 3043799999999