ENTRY 22583 20170823 22652258300000001 SUBENT 22583001 20170823 22652258300100001 BIB 9 32 2258300100002 TITLE A new half-life determination of 59Ni 2258300100003 AUTHOR (W.Ruehm, B.Schneck, K.Knie, G.Korschinek, 2258300100004 L.Zerle, E.Nolte, D.Weselka, H.Vonach) 2258300100005 INSTITUTE (2GERMUN) Faculty of Physics, Technical University of 2258300100006 Munich, D-85747, Garching, Germany. W.Ruehm, 2258300100007 B.Schneck, K.Knie, G.Korschinek, L.Zerle, E.Nolte. 2258300100008 (2AUSAUS) Institute of High Energy Physics, Austrian 2258300100009 Academy of Sciences, Vienna, Austria. D.Weselka. 2258300100010 (2AUSIRK) Institute of Radium Research, University of 2258300100011 Vienna, Austria. H.Vonach. 2258300100012 (1USALRL) Lawrence Livermore National Lab., 2258300100013 experimental site 2258300100014 REFERENCE (J,PSPS,42,(3),227,1994) Main reference, data given 2258300100015 (J,JP/G,17,S355,1991) - the same data given 2258300100016 (C,91JUELIC,,559,1991) - prelim.results for Ni-60. 2258300100017 REL-REF (I,,P.W.Kubik+,J,NIM/B,1,51,1984) - The AMS facility 2258300100018 described 2258300100019 (I,,H.Faestermann+,J,NIM/B,50,275,1990) - The AMS 2258300100020 facility described 2258300100021 FACILITY (VDGT,2GERMUN) Munich accelerator for Accelerator 2258300100022 Mass Spectrometry (AMS) analysis 2258300100023 (ACCEL,1USALRL) RTNS-II neutron facility for sample 2258300100024 irradiation 2258300100025 DETECTOR (IOCH) Bragg ionization chamber for totally stripped 2258300100026 Ni-59 ions 2258300100027 METHOD (CHSEP,BCINT) Accelerator mass spectrometry AMS 2258300100028 The 60Ni current was measured at the entrance of the 2258300100029 Tandem accelerator with a Faraday cup within a 2258300100030 precision of 10%. 2258300100031 HISTORY (20080214C) SM 2258300100032 (20090218U) AUTHOR name corrected. Minor corrections. 2258300100033 (20170823U) SD: Ref. J,JP/G,17,S355,1991 was added. 2258300100034 ENDBIB 32 0 2258300100035 NOCOMMON 0 0 2258300100036 ENDSUBENT 35 0 2258300199999 SUBENT 22583002 20140109 22382258300200001 BIB 8 18 2258300200002 REACTION (28-NI-60(N,2N)28-NI-59,,SIG) 2258300200003 SAMPLE .Natural nickel foil irradiated with fluence 2258300200004 5.2 x 10**17 n/cm2 at RTNS-II neutron facility and 2258300200005 diluted 10 times after irradiation by natural nickel 2258300200006 DECAY-DATA (28-NI-59,1.08E+05YR) 2258300200007 ANALYSIS By comparing with a standard of known 59Ni/58Ni ratio 2258300200008 of (1.04+-0.21) x 10**(-8) it was derived a ratio of 2258300200009 59Ni/60Ni= (8.1+-2.0) x 10**(-9) in the sample (the 2258300200010 relative uncertainties of current measurement, standard2258300200011 and statistics were added quadratically). 2258300200012 After correcting for the dilution factor, a cross- 2258300200013 section for the reaction 60Ni(n,2n)59Ni was deduced. 2258300200014 CORRECTION .Correction was made for sample dilution 2258300200015 ADD-RES (DECAY) Half life of Ni-59 determined in this work, 2258300200016 HL = 108000+-13000 years 2258300200017 ERR-ANALYS (DATA-ERR) Not specified 2258300200018 (ERR-HL) Error of the Ni-59 half-life 2258300200019 STATUS (TABLE) .From text of PSPS,42 on p.228 2258300200020 ENDBIB 18 0 2258300200021 NOCOMMON 0 0 2258300200022 DATA 4 1 2258300200023 EN DATA DATA-ERR ERR-HL 2258300200024 MEV MB MB YR 2258300200025 14.8 410. 100. 1.3 E+04 2258300200026 ENDDATA 3 0 2258300200027 ENDSUBENT 26 0 2258300299999 ENDENTRY 2 0 2258399999999