ENTRY 14632 20200411 14711463200000001 SUBENT 14632001 20200411 14711463200100001 BIB 9 43 1463200100002 TITLE Beta-delayed neutron emission studies of 137,138I and 1463200100003 144,145Cs performed with trapped ions 1463200100004 AUTHOR (A.Czeszumska,N.D.Scielzo,S.A.Caldwell,J.A.Clark, 1463200100005 G.Savard,B.S.Wang,A.Aprahamian,M.T.Burkey,C.J.Chiara, 1463200100006 J.Harker,A.F.Levand,S.T.Marley,G.Morgan,J.M.Munson, 1463200100007 E.B.Norman,A.Nystrom,R.Orford,S.W.Padgett, 1463200100008 A.Perez Galvan,K.S.Sharma,K.Siegl,S.Y.Strauss) 1463200100009 INSTITUTE (1USALRL,1USAUCX,1USAANL,1USACHI,1USANOT,1USAMRY, 1463200100010 1CANMNA,1CANMCG) 1463200100011 REFERENCE (J,PR/C,101,024312,2020) 1463200100012 FACILITY (LINAC,1USAANL) Studied precursors were were produced 1463200100013 at the Californium Rare Isotope Breeder Upgrade 1463200100014 (CARIBU) facility from the spontaneous fission of a 1463200100015 approx. 100-mCi 252Cf source.The fission products 1463200100016 thermalized in helium buffer gas and extracted from 1463200100017 the exit nozzle of the gas catcher. Ions were then 1463200100018 focused into the RFQ section and accelerated to 36 keV.1463200100019 DETECTOR Ions of interest were studied using the Beta-decay Paul1463200100020 Trap (BPT), an open-geometry linear radio frequency 1463200100021 quadrupole (RFQ) ion trap designed for precision 1463200100022 beta-decay studies. BPT was used to collect and suspend1463200100023 radioactive ions of interest at the center of detector 1463200100024 array. The detector array consisted of 1463200100025 (TELES,SCIN,SCIN) Two plastic scintillation telescopes 1463200100026 with EJ-204 plastic scintillators were used to detect 1463200100027 beta particles. dE detector has diameter of 10.6mm and1463200100028 1 mm thickness. E detector was 10.2cm thick with 13.3 1463200100029 cm diameter. 1463200100030 (MCPLT) Two microchannel plate detectors with nominal 1463200100031 active area of 50.3 x 50.3 mm2 with 1 ns timing 1463200100032 resolution to detect recoiling daughter ions. Position1463200100033 of ion impact was determined from relative amounts of 1463200100034 charge collected at the corners of resistive anode 1463200100035 with sub-mm precision. 1463200100036 (HPGE) Two high-purity germanium p-type HPGe detectors,1463200100037 with relative efficiency of 140 and 80% were used 1463200100038 to detect gamma rays 1463200100039 METHOD Ions of interest were produced by spontaneous fission 1463200100040 of 252Cf, captured by the BPT ion trap and their decay 1463200100041 radiation detected by an array of various radiation 1463200100042 detectors 1463200100043 ERR-ANALYS (DATA-ERR) Origin of uncertainties not described 1463200100044 HISTORY (20200411C) Compiled by S.H. 1463200100045 ENDBIB 43 0 1463200100046 NOCOMMON 0 0 1463200100047 ENDSUBENT 46 0 1463200199999 SUBENT 14632002 20200411 14711463200200001 BIB 4 14 1463200200002 REACTION 1(53-I-137(0,B-)54-XE-137,,PN) 1463200200003 2(53-I-137(0,B-)54-XE-137,,PN) 1463200200004 3(53-I-137(0,B-)54-XE-137,,PN) 1463200200005 DECAY-DATA (53-I-137,,DG,1218.,0.163) 1463200200006 (52-TE-137,,DG,243.4) 1463200200007 It was determined that 20% of trapped ions decays come 1463200200008 from 137Te 1463200200009 ANALYSIS 1Results determined from beta-ion coincidences with 1463200200010 longer flight time. This is the recommended value 1463200200011 2Results obtained by comparison of beta-ion coincidences1463200200012 associated with beta-n emission to the detected 1463200200013 beta particles from the trapped species 1463200200014 3Results determined from beta-gamma coincidences 1463200200015 STATUS (TABLE) Data taken from tab.1 of the reference 1463200200016 ENDBIB 14 0 1463200200017 NOCOMMON 0 0 1463200200018 DATA 6 1 1463200200019 DATA 1DATA-ERR 1DATA 2DATA-ERR 2DATA 3DATA-ERR 31463200200020 NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM 1463200200021 7.18 0.56 6.13 0.49 6.13 0.49 1463200200022 ENDDATA 3 0 1463200200023 ENDSUBENT 22 0 1463200299999 SUBENT 14632003 20200411 14711463200300001 BIB 4 12 1463200300002 REACTION 1(53-I-138(0,B-)54-XE-138,,PN) 1463200300003 2(53-I-138(0,B-)54-XE-138,,PN) 1463200300004 3(53-I-138(0,B-)54-XE-138,,PN) 1463200300005 DECAY-DATA (53-I-138,,DG,588.8,0.560) 1463200300006 (54-XE-138,,DG,258.1,0.315) 1463200300007 ANALYSIS 1Results determined from beta-ion coincidences with 1463200300008 longer flight time. This is the recommended value 1463200300009 2Results obtained by comparison of beta-ion coincidences1463200300010 associated with beta-n emission to the detected 1463200300011 beta particles from the trapped species 1463200300012 3Results determined from beta-gamma coincidences 1463200300013 STATUS (TABLE) Data taken from tab.1 of the reference 1463200300014 ENDBIB 12 0 1463200300015 NOCOMMON 0 0 1463200300016 DATA 6 1 1463200300017 DATA 1DATA-ERR 1DATA 2DATA-ERR 2DATA 3DATA-ERR 31463200300018 NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM 1463200300019 6.18 0.50 5.82 0.55 6.34 0.86 1463200300020 ENDDATA 3 0 1463200300021 ENDSUBENT 20 0 1463200399999 SUBENT 14632004 20200411 14711463200400001 BIB 4 12 1463200400002 REACTION 1(55-CS-144(0,B-)56-BA-144,,PN) 1463200400003 2(55-CS-144(0,B-)56-BA-144,,PN) 1463200400004 3(55-CS-144(0,B-)56-BA-144,,PN) 1463200400005 DECAY-DATA (55-CS-144,,DG,198.9,0.465) 1463200400006 (56-BA-144,,DG,387.9,0.134) 1463200400007 ANALYSIS 1Results determined from beta-ion coincidences with 1463200400008 longer flight time. This is the recommended value 1463200400009 2Results obtained by comparison of beta-ion coincidences1463200400010 associated with beta-n emission to the detected 1463200400011 beta particles from the trapped species 1463200400012 3Results determined from beta-gamma coincidences 1463200400013 STATUS (TABLE) Data taken from tab.1 of the reference 1463200400014 ENDBIB 12 0 1463200400015 NOCOMMON 0 0 1463200400016 DATA 6 1 1463200400017 DATA 1DATA-ERR 1DATA 2DATA-ERR 2DATA 3DATA-ERR 31463200400018 NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM 1463200400019 2.95 0.24 2.49 0.23 2.31 0.36 1463200400020 ENDDATA 3 0 1463200400021 ENDSUBENT 20 0 1463200499999 SUBENT 14632005 20200411 14711463200500001 BIB 4 12 1463200500002 REACTION 1(55-CS-145(0,B-)56-BA-145,,PN) 1463200500003 2(55-CS-145(0,B-)56-BA-145,,PN) 1463200500004 3(55-CS-145(0,B-)56-BA-145,,PN) 1463200500005 DECAY-DATA (55-CS-145,,DG,175.2,0.198) 1463200500006 (56-BA-145,,DG,544.3,0.099) 1463200500007 ANALYSIS 1Results determined from beta-ion coincidences with 1463200500008 longer flight time. This is the recommended value 1463200500009 2Results obtained by comparison of beta-ion coincidences1463200500010 associated with beta-n emission to the detected 1463200500011 beta particles from the trapped species 1463200500012 3Results determined from beta-gamma coincidences 1463200500013 STATUS (TABLE) Data taken from tab.1 of the reference 1463200500014 ENDBIB 12 0 1463200500015 NOCOMMON 0 0 1463200500016 DATA 6 1 1463200500017 DATA 1DATA-ERR 1DATA 2DATA-ERR 2DATA 3DATA-ERR 31463200500018 NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM 1463200500019 13.53 0.90 13.15 1.04 16.84 2.79 1463200500020 ENDDATA 3 0 1463200500021 ENDSUBENT 20 0 1463200599999 ENDENTRY 5 0 1463299999999