ENTRY 21532 20120917 22342153200000001 SUBENT 21532001 20120917 22342153200100001 BIB 11 25 2153200100002 INSTITUTE (2GERMUN) 2153200100003 REFERENCE (J,JIN,39,1217,1977) Independent yields. 2153200100004 (J,PR/C,16,254,197707) Yield ratios and analysis 2153200100005 for fragment angular momenta. 2153200100006 AUTHOR (D.C.Aumann,W.Gueckel,H.Zeising) 2153200100007 TITLE Independent yields of Pm-148m,Pm-148g and Pm-146 for 2153200100008 thermal neutron induced fission of U-233 and U-235 2153200100009 FACILITY (REAC,2GERMUN) Graphite moderated 2153200100010 Munich research reactor. 2153200100011 INC-SOURCE (REAC) Irradiation in the graphite reflector. 2153200100012 METHOD (CHSEP) .Chemical separation and purification after 2153200100013 irradiation gamma activity measured. 2153200100014 DECAY-DATA ((1.)61-PM-148-M,41.3D,DG,629.9,0.898,DG,725.6,0.325) 2153200100015 ((2.)61-PM-148-G,5.370D,DG,1465.1,0.243) Ground state. 2153200100016 ((3.)61-PM-146,5.53YR,DG,453.8,0.667) 2153200100017 DETECTOR (GELI) Coaxial Ge(Li) detector with 16.9% 2153200100018 photopeak efficiency relative to 3 by 3 NaI. 2153200100019 The detector was shielded by 20 cm lead to reduce 2153200100020 background from K-40. 2153200100021 STATUS (TABLE) .Table 7, page 1221, J.Inorg,Nucl.Chem,39. 2153200100022 HISTORY (19800520C) 2153200100023 (19800603E) 2153200100024 (20120917A) SD: Updated to new date formats,lower case.2153200100025 Corrected according last EXFOR rules and Dict. 2153200100026 Data in Subents 2,3 were revised. BIB update. 2153200100027 ENDBIB 25 0 2153200100028 COMMON 1 3 2153200100029 EN-DUMMY 2153200100030 EV 2153200100031 2.5300E-02 2153200100032 ENDCOMMON 3 0 2153200100033 ENDSUBENT 32 0 2153200199999 SUBENT 21532002 20120917 22342153200200001 BIB 7 31 2153200200002 REACTION (92-U-233(N,F)ELEM/MASS,IND,FY,,MXW) 2153200200003 Independent fission product yields. 2153200200004 INC-SPECT Thermal neutron flux was 1.8 x 10**13 n/cm2/sec 2153200200005 SAMPLE (92-U-233,0.997) The 233U sample of 0.1 g of 2153200200006 233U (99.7%) as U3O8 2153200200007 The 233U3O8 sample was divided into 4 portions of 2153200200008 approx. 25 mg, each of which was wrapped in aluminum 2153200200009 foil. These 4 portions were then embedded in aluminum 2153200200010 powder contained in the small aluminum capsule which 2153200200011 again was sealed in a larger aluminum can. 2153200200012 MONITOR (92-U-233(N,F)56-BA-140,IND,FY,,MXW) Normalised to 2153200200013 a value of 6.32 pc/fis for the independent yield of 2153200200014 Ba-140. 2153200200015 DECAY-MON (56-BA-140,12.789D) 2153200200016 (57-LA-140,40.22HR,DG,1596.6,0.955) monitor. 2153200200017 ERR-ANALYS (ERR-T) .Errors include: 2153200200018 (ERR-S) statistical errors in counting of sample 2153200200019 (ERR-1) For U-233 total errors are further increased 2153200200020 to take account of the uncertainty associated 2153200200021 with the secondary neutron capture reaction on 2153200200022 Pm-147, these additional errors are estimated as 2153200200023 five and fifteen percent for the yields of the 2153200200024 Pm-148 metastable and ground state respectively. 2153200200025 (ERR-2) error in detector efficiency 2153200200026 (ERR-3) chemical yield errors 2153200200027 (ERR-4) fission rate normalisation uncertainty. 2153200200028 (ERR-5) uncertainties in intensity of gamma-ray 2153200200029 (ERR-6) uncertainties in isomeric transition 2153200200030 No errors for the half-lives of the Pm isomers are 2153200200031 included. 2153200200032 HISTORY (20120917A) SD: Data were revised. 2153200200033 ENDBIB 31 0 2153200200034 COMMON 4 3 2153200200035 MONIT ERR-2 ERR-3 ERR-4 2153200200036 PC/FIS PER-CENT PER-CENT PER-CENT 2153200200037 6.3200E+00 5. 4. 8. 2153200200038 ENDCOMMON 3 0 2153200200039 DATA 11 4 2153200200040 ELEMENT MASS ISOMER DATA DATA-MAX ERR-T 2153200200041 ERR-1 ERR-5 ERR-6 ERR-S DECAY-FLAG 2153200200042 NO-DIM NO-DIM NO-DIM PC/FIS PC/FIS PC/FIS 2153200200043 PER-CENT PER-CENT PER-CENT PER-CENT NO-DIM 2153200200044 61. 146. 1.1000E-08 2153200200045 3. 2153200200046 61. 148. 1. 1.1300E-06 1.3000E-072153200200047 5. 1.8 1.5 1. 2153200200048 61. 148. 0. 3.7000E-07 9.0000E-082153200200049 15. 2.5 10. 2.5 2. 2153200200050 61. 148. 1.5000E-06 1.6000E-072153200200051 2153200200052 ENDDATA 12 0 2153200200053 ENDSUBENT 52 0 2153200299999 SUBENT 21532003 20120917 22342153200300001 BIB 8 36 2153200300002 REACTION (92-U-235(N,F)ELEM/MASS,IND,FY,,MXW) 2153200300003 independent fission product yields. 2153200300004 INC-SPECT Thermal neutron flux was: 2153200300005 235U-I : 1.8 x 10**13 n/cm2/sec 2153200300006 235U-II : 1.4 x 10**13 n/cm2/sec 2153200300007 235U-III: 1.1 x 10**13 n/cm2/sec 2153200300008 235U-IV : 1.8 x 10**13 n/cm2/sec 2153200300009 SAMPLE (92-U-235,0.90) The 235U samples consisted of 3-5 g 2153200300010 of enriched 235U (90%) as uranium metal. 2153200300011 The 235U sample was made up of approx. 80 chips of 2153200300012 35-65 mg of uranium metal. Each chip was wrapped in 2153200300013 aluminum foil (20 mu-m thick). 8-10 of these chips 2153200300014 were embedded in coarse-grained aluminum powder and the2153200300015 mixture was sealed in small aluminum capsules (inner 2153200300016 diameter 9 mm, length 60 mm). 2153200300017 ANALYSIS .Values quoted are the weighted mean of four 2153200300018 separated measurements. 2153200300019 MONITOR (92-U-235(N,F)56-BA-140,IND,FY,,MXW) Value taken 2153200300020 as 6.33 pc/fis. 2153200300021 DECAY-MON (56-BA-140,12.789D) 2153200300022 (57-LA-140,40.22HR,DG,1596.6,0.955) Monitor. 2153200300023 ERR-ANALYS (ERR-T) .Errors include: 2153200300024 (ERR-S,3.,35.) statistical errors in counting of sample2153200300025 Pm-148-m Pm-148-g 2153200300026 235U-I 5% 30% 2153200300027 235U-II 3% 16% 2153200300028 235U-III 7% 35% 2153200300029 235U-IV 3% 13% 2153200300030 (ERR-1) error in detector efficiency 2153200300031 (ERR-2) chemical yield errors 2153200300032 (ERR-3) fission rate normalisation uncertainty. 2153200300033 (ERR-4) uncertainties in intensity of gamma-ray 2153200300034 (ERR-5) uncertainties in isomeric transition 2153200300035 No errors for the half-lives of the Pm isomers are 2153200300036 included. 2153200300037 HISTORY (20120917A) SD: Data were revised. 2153200300038 ENDBIB 36 0 2153200300039 COMMON 4 3 2153200300040 MONIT ERR-1 ERR-2 ERR-3 2153200300041 PC/FIS PER-CENT PER-CENT PER-CENT 2153200300042 6.3300E+00 5. 4. 8. 2153200300043 ENDCOMMON 3 0 2153200300044 DATA 9 4 2153200300045 ELEMENT MASS ISOMER DATA DATA-MAX ERR-T 2153200300046 ERR-4 ERR-5 DECAY-FLAG 2153200300047 NO-DIM NO-DIM NO-DIM PC/FIS PC/FIS PC/FIS 2153200300048 PER-CENT PER-CENT NO-DIM 2153200300049 61. 146. 4.5000E-10 2153200300050 3. 2153200300051 61. 148. 1. 6.7000E-09 6.000E-102153200300052 1.8 1. 2153200300053 61. 148. 0. 2.8000E-09 7.0000E-102153200300054 2.5 10. 2. 2153200300055 61. 148. 9.5000E-09 9.0000E-102153200300056 2153200300057 ENDDATA 12 0 2153200300058 ENDSUBENT 57 0 2153200399999 ENDENTRY 3 0 2153299999999