ENTRY 30787 20211119 32043078700000001 SUBENT 30787001 20211119 32043078700100001 BIB 12 46 3078700100002 TITLE Fragment shell effect in low energy fission: 3078700100003 Independent yields of technetium isotopes in the 3078700100004 thermal-neutron-induced fission of 239Pu 3078700100005 AUTHOR (A.Srivastava, A.Goswami, B.K.Srivastava, 3078700100006 A.G.C.Nair, S.B.Manohar, S.Prakash, M.V.Ramaniah) 3078700100007 INSTITUTE (3INDTRM) Radiochemistry Division 3078700100008 REFERENCE (J,PR/C,33,969,1986) 3078700100009 (P,BARC-1297,11,1986) 3078700100010 H.Naik+, Same values given in table 3078700100011 (C,83MYSORE,2,145,1983) 3078700100012 B.K,Srivastava+, Figures given 3078700100013 (P,BARC-1381,51,1987) 3078700100014 A.Srivastava+, Same values given in table. 3078700100015 FACILITY (REAC,3INDTRM) Swimming pool type reactor APSARA 3078700100016 INC-SPECT - 1e+13 neutrons/sec/cm2 3078700100017 - Irradiated for 10 to 30 sec (depending on half-lives 3078700100018 of fission products and their precursors) 3078700100019 SAMPLE (94-PU-239,ENR=0.941) About 12 ug of plutonium 94.1% of3078700100020 239Pu in solution form sealed in polypropylene tubes.3078700100021 METHOD (CHSEP,GSPEC) Technetium was separated at various 3078700100022 cooling times (40 to 100 sec) as tetraphenyl arsonium 3078700100023 pertechnate by exchange on a performed precipitate of 3078700100024 tetraphenyl arsonium chlorate 3078700100025 DETECTOR (GE-IN) 45 cm3 intrinsic Ge detector 3078700100026 DECAY-DATA (43-TC-101,14.2MIN,DG,306.8,0.88) 3078700100027 (43-TC-103,54.2SEC,DG,346.4,0.162) 3078700100028 (43-TC-104,18.4MIN,DG,358.,0.89) 3078700100029 (43-TC-105,7.7MIN,DG,159.3,0.070) 3078700100030 (44-RU-105,4.44HR,DG,724.2,0.467) 3078700100031 (42-MO-99,66.HR,DG,739.4,0.121) 3078700100032 (43-TC-99-M,6.01HR,DG,140.5,0.877) 3078700100033 Used as a tracer for chemical yield determination 3078700100034 (44-RU-106,371.6D) 3078700100035 Used as a tracer for chemical yield determination 3078700100036 (45-RH-106-M,,DG,511.9,0.864) 3078700100037 Daughter of 106Ru 3078700100038 REL-REF (M,,A.Srivastava+,J,RCA,35,15,1984) 3078700100039 Chemical separation of technetium 3078700100040 (R,,U.Reus+,J,AND,29,1,1983) 3078700100041 Decay data 3078700100042 HISTORY (20101008C) On 3078700100043 (20210427A) On. ELEMENT=43 in 001 deleted. 3078700100044 (20210917A) VS: SF5: IND->CUM in 004.1 3078700100045 REACTION ratio -> SF8=FRC 3078700100046 (20211119U) VS. Reference BARC-1381,51,1987 added. 3078700100047 SAMPLE code added. 3078700100048 ENDBIB 46 0 3078700100049 COMMON 1 3 3078700100050 EN-DUMMY 3078700100051 EV 3078700100052 0.0253 3078700100053 ENDCOMMON 3 0 3078700100054 ENDSUBENT 53 0 3078700199999 SUBENT 30787002 20101008 31483078700200001 BIB 3 3 3078700200002 REACTION (94-PU-239(N,F)MASS,CHN,FY) 3078700200003 ERR-ANALYS (DATA-ERR) No information on source of uncertainty 3078700200004 STATUS (TABLE) Table II of J,PR/C,33,969,1986 3078700200005 ENDBIB 3 0 3078700200006 NOCOMMON 0 0 3078700200007 DATA 3 4 3078700200008 MASS DATA DATA-ERR 3078700200009 NO-DIM PC/FIS PC/FIS 3078700200010 101. 5.95 0.08 3078700200011 103. 6.95 0.14 3078700200012 104. 5.96 0.12 3078700200013 105. 5.57 0.11 3078700200014 ENDDATA 6 0 3078700200015 ENDSUBENT 14 0 3078700299999 SUBENT 30787003 20101008 31483078700300001 BIB 5 22 3078700300002 REACTION 1((94-PU-239(N,F)ELEM/MASS,IND,FY)/ 3078700300003 (94-PU-239(N,F)MASS,CHN,FY)) 3078700300004 2(94-PU-239(N,F)ELEM/MASS,IND,FY) 3078700300005 RESULT 1(FRIND) Fractional independent yield for a given 3078700300006 mass chain 3078700300007 ANALYSIS Since the last members of the mass chains 101, 103, 3078700300008 and 104 are either long lived or stable, their 3078700300009 independent formations were assumed to be negligible 3078700300010 and therefore the fractional independent yields (FIY) 3078700300011 of 101Tc, 103Tc, and 104Tc were obtained as (1-FCY), 3078700300012 where FCY refers to the fractional cumulative yield 3078700300013 of precursor molybdenum. In the case of 105Tc, the 3078700300014 FIY was obtained from the difference between the FCY's3078700300015 of 105Tc and 105Mo with the assumption that the chain 3078700300016 terminates at 105Rh. 3078700300017 ERR-ANALYS1(DATA-ERR) Standard deviation of average value based 3078700300018 on 3 independent measurements. The following sources 3078700300019 were taken into account: 3078700300020 - chemical yield; 3078700300021 - separation time; 3078700300022 - counting statistics. 3078700300023 STATUS (TABLE) Table II of J,PR/C,33,969,1986 3078700300024 ENDBIB 22 0 3078700300025 COMMON 1 3 3078700300026 ELEMENT 3078700300027 NO-DIM 3078700300028 43. 3078700300029 ENDCOMMON 3 0 3078700300030 DATA 5 4 3078700300031 MASS DATA 1DATA-ERR 1DATA 2DATA-ERR 2 3078700300032 NO-DIM NO-DIM NO-DIM PC/FIS PC/FIS 3078700300033 101. 0.0023 0.0015 0.014 0.009 3078700300034 103. 0.0346 0.015 0.241 0.097 3078700300035 104. 0.090 0.014 0.536 0.083 3078700300036 105. 0.195 0.045 1.086 0.251 3078700300037 ENDDATA 6 0 3078700300038 ENDSUBENT 37 0 3078700399999 SUBENT 30787004 20211005 32023078700400001 BIB 4 5 3078700400002 REACTION 1(94-PU-239(N,F)ELEM/MASS,IND,FY,,FRC) 3078700400003 2(94-PU-239(N,F)ELEM/MASS,CUM,FY,,FRC) 3078700400004 ERR-ANALYS (DATA-ERR) No information on source of uncertainty 3078700400005 STATUS (TABLE) Table III of J,PR/C,33,969,1986 3078700400006 HISTORY (20210917A) VS: SF5: IND->CUM in 004.2 RESULT: deleted 3078700400007 ENDBIB 5 0 3078700400008 COMMON 1 3 3078700400009 ELEMENT 3078700400010 NO-DIM 3078700400011 43. 3078700400012 ENDCOMMON 3 0 3078700400013 DATA 5 4 3078700400014 MASS DATA 1DATA-ERR 1DATA 2DATA-ERR 2 3078700400015 NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM 3078700400016 101. 0.0018 0.0012 0.0018 0.0012 3078700400017 103. 0.0301 0.0131 0.0382 0.0136 3078700400018 104. 0.0670 0.0152 0.1052 0.0204 3078700400019 105. 0.1358 0.0389 0.241 0.0439 3078700400020 ENDDATA 6 0 3078700400021 ENDSUBENT 20 0 3078700499999 SUBENT 30787005 20101008 31483078700500001 BIB 5 8 3078700500002 REACTION 1(94-PU-239(N,F)ELEM,,AP) 3078700500003 2(94-PU-239(N,F)ELEM,CHG,FY) 3078700500004 ANALYSIS Obtained by fitting of independent yields by Gaussian 3078700500005 function 3078700500006 MISC-COL (MISC) Gaussian width 3078700500007 ERR-ANALYS (DATA-ERR) No information on source of uncertainty 3078700500008 STATUS (TABLE) Table IV of J,PR/C,33,969,1986 3078700500009 (DEP,30787003) Independent yield used for fitting 3078700500010 ENDBIB 8 0 3078700500011 COMMON 1 3 3078700500012 ELEMENT 3078700500013 NO-DIM 3078700500014 43. 3078700500015 ENDCOMMON 3 0 3078700500016 DATA 6 1 3078700500017 DATA 1DATA-ERR 1DATA 2DATA-ERR 2MISC MISC-ERR 3078700500018 NO-DIM NO-DIM PC/FIS PC/FIS NO-DIM NO-DIM 3078700500019 108.35 0.45 8.01 1.32 1.80 0.25 3078700500020 ENDDATA 3 0 3078700500021 ENDSUBENT 20 0 3078700599999 ENDENTRY 5 0 3078799999999