ENTRY 14519 20181215 14481451900000001 SUBENT 14519001 20181215 14481451900100001 BIB 10 52 1451900100002 TITLE Beta-decay half-lives of 134,134mSb and their 1451900100003 isomeric yield ratio produced by the spontaneous 1451900100004 fission of 252Cf 1451900100005 AUTHOR (K.Siegl,K.Kolos,N.D.Scielzo,A.Aprahamian,G.Savard, 1451900100006 M.T.Burkey,M.P.Carpenter,P.Chowdhury,J.A.Clark, 1451900100007 P.Copp,G.J.Lane,C.J.Lister,S.T.Marley,E.A.McCutchan, 1451900100008 A.J.Mitchell,J.Rohrer,M.L.Smith,S.Zhu) 1451900100009 INSTITUTE (1USANOT,1USALRL,1USACHI,1USAANL,1USALTI,3AULCBR, 1451900100010 1USALSU,1USABNL) 1451900100011 REFERENCE (J,PR/C,98,054307,2018) 1451900100012 FACILITY (LINAC,1USAANL) The Californium Rare Isotope Breeder 1451900100013 Upgrade facility at Argonne National Laboratory was 1451900100014 used to deliver pure beams of mass-separated ions 134, 1451900100015 134mSb from the spontaneous fission of approx. 1.7-Ci 1451900100016 252Cf source at the CARIBU facility. A radio frequency 1451900100017 quadrupole RFQ buncher containing residual helium gas 1451900100018 was used to accumulate, cool, and bunch the beam with 1451900100019 a timing of 100 ms between bunches. 1451900100020 DETECTOR (SCIN) Decay station consisted equiped with a plastic 1451900100021 scintillation detector for detection of beta rays 1451900100022 with diameter of 10 cm and length of 10 cm. The 1451900100023 detector has a 6-mm diameter well bored in it to 1451900100024 allow the beam to implant on a 35-mm-wide 1451900100025 aluminized-mylar tape which passes through a slot in 1451900100026 the middle of the detector oriented at 90deg to the 1451900100027 beam direction. 1451900100028 (HPGE) Array of five high-purity germanium clover 1451900100029 detectors was used mainly to determine half-lifes of 1451900100030 134Sb nuclei. 1451900100031 INC-SOURCE 134mSb,134Sb ions were produced from the spontaneous 1451900100032 fission of a 1.7-Ci 252Cf source at the CARIBU 1451900100033 facility. The 252Cf fission fragments were 1451900100034 thermalized using a large helium-filled gas catcher 1451900100035 and extracted as a continuous low-energy beam of 1451900100036 singly charged ions from the nozzle of this device 1451900100037 using a combination of gas flow and electric fields. 1451900100038 The beam was sent through an isobar separator operated 1451900100039 with a mass resolution of M/dM=15000 to 1451900100040 isolate 134,134mSb. 1451900100041 ANALYSIS Ratio of the yield of the high-spin to low-spin 1451900100042 nuclear states of 134mSb to 134Sb was determined from 1451900100043 beta singles build-up and decay for both the short 1451900100044 and long tape cycles, taking into account the 1451900100045 relative efficiency for beta detection for each 1451900100046 species, as well as the decay losses incurred during 1451900100047 the transport time 1451900100048 CORRECTION The correction for decay prior to measurement was made.1451900100049 This included 30 ms extraction time of the fission 1451900100050 products from the CARIBU source to the buncher followed1451900100051 by the 100 ms buncher cycle. These corrections shift 1451900100052 the yield ratio by 8%. 1451900100053 HISTORY (20181215C) Compiled by S.H. 1451900100054 ENDBIB 52 0 1451900100055 NOCOMMON 0 0 1451900100056 ENDSUBENT 55 0 1451900199999 SUBENT 14519002 20181215 14481451900200001 BIB 4 5 1451900200002 REACTION (98-CF-252(0,F)51-SB-134-M/G,IND,FY/RAT) 1451900200003 DECAY-DATA (51-SB-134-M,9.93SEC) Measured by authors 1451900200004 (51-SB-134-G,0.6744SEC) Measured by authors 1451900200005 STATUS (TABLE) Data taken from tab.2 of the reference 1451900200006 ERR-ANALYS (DATA-ERR) Source of uncertainties not described 1451900200007 ENDBIB 5 0 1451900200008 NOCOMMON 0 0 1451900200009 DATA 2 1 1451900200010 DATA DATA-ERR 1451900200011 NO-DIM NO-DIM 1451900200012 2.03 0.05 1451900200013 ENDDATA 3 0 1451900200014 ENDSUBENT 13 0 1451900299999 ENDENTRY 2 0 1451999999999