ENTRY 30437 20211108 320330437 0 1 SUBENT 30437001 20211108 320330437 1 1 BIB 12 44 30437 1 2 INSTITUTE (3INDTRM) 30437 1 3 REFERENCE (J,JIN,41,1649,1979) Final publication 30437 1 4 (P,BARC-900,87,1976) Brief, table, graph given 30437 1 5 (P,BARC-872,104,1976) Preliminary results 30437 1 6 (C,75CALCUTTA,2,141,1975) Data on graphs 30437 1 7 AUTHOR (A.Ramaswami,S.P.Dange,Satya Prakash,M.V.Ramaniah) 30437 1 8 (R.Kannabiran,A.G.C.Nair) 30437 1 9 TITLE Mass yield from thermal neutron induced fission 30437 1 10 of Cm-245 30437 1 11 FACILITY (REAC,3INDTRM) CIRUS reactor 30437 1 12 INC-SPECT Thermal reactor spectrum. The cadmium-ratio for U-235 30437 1 13 and Cm-245 is about 200 in irradiation position. 30437 1 14 SAMPLE (96-CM-245,ENR=0.9386) 30437 1 15 Curium purified free of plutonium and fission products.30437 1 16 Curium (approx. 50 micrograms/cm2) and uranium (approx.30437 1 17 5 micrograms/cm2) electrodeposited on gold-plated alu- 30437 1 18 minum foils, wrapped in superpure Al-catcher-foils. 30437 1 19 Isotopic composition: 30437 1 20 Curium sample Cm-244 93.86% 30437 1 21 Cm-245 2.01% 30437 1 22 Cm-246 4.13% 30437 1 23 Uranium sample 90% U-235 30437 1 24 METHOD Yield determined by Th 'R-value' method relative to 30437 1 25 U-235 thermal fission yields (see EXFOR 30437.002). 30437 1 26 (REC) Fission fragments were collected by the 'thin- 30437 1 27 target-recoil-catcher' technique. 30437 1 28 (GSPEC) High yield products were measured by direct 30437 1 29 gamma counting. 30437 1 30 (CHSEP) For low yield products radiochemical separation30437 1 31 was employed followed by beta- or gamma-counting 30437 1 32 DETECTOR (GELI) 30437 1 33 (PROPC) 30437 1 34 STATUS (TABLE) Table 2 of J.Inorg.Nucl.Chem.41,1649 30437 1 35 (APRVD), R.Ramaswami, on 1980-03-19 30437 1 36 HISTORY (19780228C) OS. Data from progr.report compiled. 30437 1 37 (19800201A) ML. Entry revised according final public. 30437 1 38 (20090310A) SD:Updated to new date formats,lower case. 30437 1 39 (20211018A) VS. Reference 75CALCUTTA,2,141,1974 added. 30437 1 40 002 corrected. 30437 1 41 CORRECTION Since 99% of all fissions in the curium-sample 30437 1 42 will be from Cm-245, no corrections for contributions 30437 1 43 from fissions of other curium isotopes were applied. 30437 1 44 No information is given on corrections due to chemical 30437 1 45 separation procedures and sample counting. 30437 1 46 ENDBIB 44 0 30437 1 47 COMMON 1 3 30437 1 48 EN-DUMMY 30437 1 49 EV 30437 1 50 2.3500E-02 30437 1 51 ENDCOMMON 3 0 30437 1 52 ENDSUBENT 51 0 30437 199999 SUBENT 30437002 20211108 320330437 2 1 BIB 6 24 30437 2 2 REACTION (96-CM-245(N,F)ELEM/MASS,CUM,FY,,MXW) 30437 2 3 ANALYSIS From measured fission product activities ratios 30437 2 4 'R-values' calculated as 30437 2 5 R=a(99,235)*a(X,245)/(a(99,245)*a(X,235)) 30437 2 6 where 99,X,235 and 245 have the meaning explained 30437 2 7 under method above. 30437 2 8 Yields for product X from fission of Cm-245 (=Y(X,245))30437 2 9 are calculated as 30437 2 10 Y(X,245)=R*Y(99,245)*Y(X,235)/Y(99,235), where 30437 2 11 Y(99,245) is an assumed value for the Cm-245 fission 30437 2 12 yield of Mo-99 30437 2 13 Y(X,235) and Y(99,235) are the U-235 fission yields of 30437 2 14 fission product X and Mo-99 respectively. 30437 2 15 MONITOR ((MONIT1)96-CM-245(N,F)42-MO-99,CUM,FY,,MXW) 30437 2 16 Internal standard before normalization 30437 2 17 ((MONIT2)92-U-235(N,F)ELEM/MASS,CUM,FY,,MXW) 30437 2 18 Taken from the evaluation of Meek and Rider 30437 2 19 MONIT-REF ((MONIT2),M.E.Meek+,R,NEDO-12154-1,1974) 30437 2 20 ERR-ANALYS The present yield determination is 5-10% for asymmetric30437 2 21 fission products and 10-15% for symmetric fission 30437 2 22 products. 30437 2 23 (ERR-S) Total statistical uncertainty: 5% 30437 2 24 HISTORY (20211018A) VS. MISC-COL and MISC data deleted. 30437 2 25 ERR-ANALYS corrected. 30437 2 26 ENDBIB 24 0 30437 2 27 COMMON 2 3 30437 2 28 MONIT1 ERR-S 30437 2 29 PC/FIS PER-CENT 30437 2 30 4.09E+00 5. 30437 2 31 ENDCOMMON 3 0 30437 2 32 DATA 4 19 30437 2 33 MASS ELEMENT DATA MONIT2 30437 2 34 NO-DIM NO-DIM PC/FIS PC/FIS 30437 2 35 89. 38. 0.820 4.85 30437 2 36 91. 38. 0.932 5.916 30437 2 37 95. 40. 2.14 6.459 30437 2 38 97. 40. 2.89 5.945 30437 2 39 99. 42. 4.00 6.133 30437 2 40 103. 44. 6.55 3.135 30437 2 41 111. 47. 3.84 0.0185 30437 2 42 115. 48. 0.418 0.00918 30437 2 43 121. 50. 0.025 0.01296 30437 2 44 125. 50. 0.074 0.0136 30437 2 45 127. 51. 0.45 0.1284 30437 2 46 131. 53. 2.93 2.835 30437 2 47 132. 52. 3.74 4.188 30437 2 48 133. 54. 5.34 6.77 30437 2 49 135. 54. 6.90 6.633 30437 2 50 140. 56. 5.537 6.316 30437 2 51 141. 58. 4.99 5.887 30437 2 52 143. 58. 4.42 5.969 30437 2 53 147. 60. 2.50 2.283 30437 2 54 ENDDATA 21 0 30437 2 55 ENDSUBENT 54 0 30437 299999 ENDENTRY 2 0 3043799999999