ENTRY 30655 20090830 31403065500000001 SUBENT 30655001 20090830 31403065500100001 BIB 12 30 3065500100002 INSTITUTE (3INDPOO) 3065500100003 REFERENCE (J,RRL,51,(6),391,198205) 3065500100004 AUTHOR (V.K.Chindhade,A.G.Joglekar,V.N.Bhoraskar) 3065500100005 TITLE Isomer ratio and activation cross section for the 3065500100006 Ba-137(n,2n)Ba-136-m reaction at 14.4 MeV 3065500100007 INC-SOURCE (D-T) Neutron generator with flux 5*10**8 n/cm2/sec 3065500100008 SAMPLE Five samples prepared by mixing uniformly pure (99.9%) 3065500100009 powders of BaOo and PbO in the ratios 1 to 1, 3065500100010 2 to 1, 2 to 1.5, 3 to 1, 2 to 3. Each powder mixture 3065500100011 with weight about 0.1 g was sealed in polyethylene 3065500100012 container of about 6.mm in diameter and 20.mm length 3065500100013 METHOD (MOMIX) Activation method with typical activation 3065500100014 cycle 3065500100015 Irradiation - 1.sec 3065500100016 Transfer (including cooling time) - 0.15 sec 3065500100017 Counting time - 1.sec 3065500100018 Waiting time - 5.sec 3065500100019 Fast pneumatic transfer system was developed 3065500100020 DETECTOR (NAICR) 3.*3.inch NaI(Tl) detector coupled with 3065500100021 4096-channel analyzer 3065500100022 ANALYSIS The solution of the radiation decay equation with 3065500100023 number of counts evaluated after substracting of 3065500100024 background activity, smoothing the spectrum and 3065500100025 Gaussian function fitting 3065500100026 STATUS (TABLE) Data were taken from Table 1 of the reference 3065500100027 HISTORY (19830530C) VP. 3065500100028 (20090725A) SD:Updated to new date formats,lower case. 3065500100029 CORRECTION The correction due to self-absorption in the sample 3065500100030 and dead time correction are neglected because of the 3065500100031 small size of the sample and low count rate 3065500100032 ENDBIB 30 0 3065500100033 NOCOMMON 0 0 3065500100034 ENDSUBENT 33 0 3065500199999 SUBENT 30655002 20090830 31403065500200001 BIB 7 14 3065500200002 REACTION (56-BA-137(N,2N)56-BA-136-M,,SIG) 3065500200003 DECAY-DATA (56-BA-136-M,0.32SEC,DG,164.,0.40, 3065500200004 DG,818.,1.00) 3065500200005 MONITOR (82-PB-208(N,2N)82-PB-207-M,,SIG) 3065500200006 MONIT-REF (10361002,G.N.SALAITA+,J,JIN,35,2139,197307) 3065500200007 DECAY-MON (82-PB-207-M,0.8SEC,DG,570.,0.98) 3065500200008 COMMENT It was assumed that contribution from (n,inel) reaction3065500200009 to the formation of Ba-136-m in natural mixture of 3065500200010 barium isotopes for 14.MeV neutrons was negligible 3065500200011 ERR-ANALYS (DATA-ERR) Include root mean square values comprised of3065500200012 uncertainties in: 3065500200013 * Estimating photopeak area, 3065500200014 * Relative detection efficiency, 3065500200015 * Sample weighing and timing 3065500200016 ENDBIB 14 0 3065500200017 NOCOMMON 0 0 3065500200018 DATA 6 1 3065500200019 EN EN-RSL DATA DATA-ERR MONIT MONIT-ERR 3065500200020 MEV MEV MB MB MB MB 3065500200021 1.4400E+01 3.0000E-01 3.5000E+02 4.0000E+01 1.3100E+03 1.1600E+023065500200022 ENDDATA 3 0 3065500200023 ENDSUBENT 22 0 3065500299999 ENDENTRY 2 0 3065599999999