ENTRY 21581 20220208 23092158100000001 SUBENT 21581001 20220208 23092158100100001 BIB 15 67 2158100100002 TITLE Half-lives, neutron emission probabilities and 2158100100003 fission yields of neutron-rich rubidium isotopes 2158100100004 in the mass region A=96 to A=100 2158100100005 AUTHOR (P.Peuser,H.Otto,M.Weis,G.Nyman,E.Roeckl,J.Bonn, 2158100100006 L.von Reisky,C.Spath) 2158100100007 REFERENCE (J,ZP/A,289,219,1979) Issue 2 2158100100008 (C,79GRENOB,,288,1979) 2158100100009 INSTITUTE (2GERMNZ) Experimental site, P.P,H.O.,M.W. 2158100100010 (Institut fuer Kernchemie), J.B.,L.V.R.,C.S. 2158100100011 (Institut fuer Physik). 2158100100012 (2GERGSI) G.N.,E.R. 2158100100013 FACILITY (REAC,2GERMNZ) TRIGA reactor. 2158100100014 INC-SOURCE (REAC) 2158100100015 INC-SPECT Thermal Maxwellian neutron spectrum from reactor. 2158100100016 Flux density 1.7E+11 n/sec/cm2. 2158100100017 SAMPLE Surface ionization source. Thin sheets of 2158100100018 graphite coated with about 200 mg of U-235 at 2158100100019 1700 degr Kelvin in a W-oven where the alkaline 2158100100020 ions are accelerated at 6 kV. 2158100100021 METHOD (OLMS) Isotope separator using a surface ionization 2158100100022 source, mass resolution delta(A)/A = 700., maximum 2158100100023 efficiency is 6% for Rb-90. 2158100100024 Measurement of the decay curve by delayed neutron 2158100100025 emission after collection of the fission products 2158100100026 in a 25 microns thick window of aluminized capton 2158100100027 in the well shielded detector position. 2158100100028 DETECTOR (PROPC) 8 He-3 proportional counters circularly 2158100100029 embedded in paraffin and shielded by a Cd-sheet and 2158100100030 boron paraffin. Neutron detection efficiency 2158100100031 measured with a Am-Li standard source, 13.8 +- 0.5% 2158100100032 (Delayed neutron detection). 2158100100033 (SCIN) Plastic scintillator (detection of beta 2158100100034 particles) 0.5 mm long * 20 mm in diam., efficiency 2158100100035 about 30.% 2158100100036 (GELI) Ge(Li) detector, 18% efficiency 2158100100037 relative to a 3 in * 3 in Na-I-(Tl) crystal. 2158100100038 Energy resolution = 1.95 keV at 1332. keV. For 2158100100039 detection of the fission product decay gammas. 2158100100040 PART-DET (B,DG,DN) 2158100100041 CORRECTION For background. 2158100100042 For decay of nuclei during the diffusion process. 2158100100043 ADD-RES From text, page 224 of J.Zeitschrift fuer Physik A, 2158100100044 v.289,is.2,p.219,1979 : 2158100100045 Most probable mass for Rb was defined from fit of a 2158100100046 Gaussian through the data to be 92.40+-0.03. 2158100100047 Width of Gaussian distribution 1.47+-0.02 2158100100048 Most probable charge for mass=99. was defined taking 2158100100049 into account other data at mass 99. than for Rb 2158100100050 from M.Weis, H.O.Denschlag, Annual Report 1975 2158100100051 Institut fuer Kernchemie der Universitaet Mainz, 2158100100052 p.84. using Gaussian fit to be 39.80+-0.05; 2158100100053 width of Gaussian distribution 0.64+-0.04. 2158100100054 ERR-ANALYS (DATA-ERR) No details given. 2158100100055 HISTORY (19800708C) G.C. 2158100100056 (19801120A) G.C., REACTION strings in SUBWORK 002 2158100100057 corrected. 2158100100058 (19821119A) SUBWORK 2 deleted, delayed neutron emission2158100100059 probabilities not coded in EXFOR. 2158100100060 (20171021A) M.M. Upper -> lower case correction. 2158100100061 Dates were corrected for 4-digits year. 2158100100062 Subent 002 was not found in archive, re-compiled 2158100100063 according to now-days rule. 2158100100064 EN was moved in Subents 003-005. 2158100100065 Subents 004-005 were deleted according to a comment of2158100100066 N.Otsuka (NDS,IAEA), information was moved in ADD-RES.2158100100067 (20201211U) SD: Correction in Subent 003. 2158100100068 (20220208U) SD: Ref. C,79GRENOB,,288,1979 added. 2158100100069 ENDBIB 67 0 2158100100070 NOCOMMON 0 0 2158100100071 ENDSUBENT 70 0 2158100199999 SUBENT 21581002 20171021 22682158100200001 BIB 6 15 2158100200002 REACTION (37-RB-99(0,B-)38-SR-98,,PN) 2158100200003 DECAY-DATA (37-RB-99,59.MSEC) 59.+-4 msec from neutron decay curve2158100200004 37-RB-98 HL was defined to be 2158100200005 112+-4 msec from neutron decay curve, 2158100200006 109+-12 msec from gamma-rays spectra. 2158100200007 MONITOR (37-RB-98(0,B-)38-SR-98,,PN) 2158100200008 Average of two values was used: 2158100200009 MONIT-REF . K.D.Wuensch+,Contribution to the Isotope Separator 2158100200010 On-line Workshop, Brookhaven, 31 Oct.,1977,unpublished2158100200011 18.4+-2.9 % . 2158100200012 (23361007,E.Roecl+,J,NP/A,222,621,1974) 13.3+-2.1 % 2158100200013 STATUS (TABLE) Table 1 of 2158100200014 J.Zeitschrift fuer Physik A,v.289,is.2,p.219,1979 2158100200015 HISTORY (20171021C) M.M. 2158100200016 Subent was not found in archive, compiled again. 2158100200017 ENDBIB 15 0 2158100200018 NOCOMMON 0 0 3 2158100200019 DATA 4 1 2158100200020 DATA DATA-ERR MONIT MONIT-ERR 2158100200021 NO-DIM NO-DIM NO-DIM NO-DIM 2158100200022 0.15 0.03 0.158 0.026 2158100200023 ENDDATA 3 0 2158100200024 ENDSUBENT 23 0 2158100299999 SUBENT 21581003 20201211 22962158100300001 BIB 7 20 2158100300002 REACTION (92-U-235(N,F)ELEM/MASS,IND,FY,,MXW) 2158100300003 DECAY-DATA ((1.)37-RB-97,173.MSEC) 173 +- 3 msec 2158100300004 ((2.)37-RB-98,112.MSEC,DN,,0.158) 2158100300005 112 +- 4 msec ; 15.8 +- 2.6% 2158100300006 ((3.)37-RB-99,59.MSEC,DN,,0.15) 2158100300007 59 +- 4 msec. 15. +- 3.% (measured, see Subent 002) 2158100300008 Half-lives were measured. 2158100300009 MONITOR (92-U-235(N,F)37-RB-96,IND,FY,,MXW) 2158100300010 DECAY-MON (37-RB-96,188.MSEC,DG,815., 2158100300011 ,DG,692., 2158100300012 ,DG,1037.) 2158100300013 188. +- 2. msec. Three (from 9)prominent gamma lines. 2158100300014 ANALYSIS Independent fission yields were derived from the mass 2158100300015 spectral distribution of delayed neutrons. 2158100300016 STATUS (TABLE) Table 1 of 2158100300017 J.Zeitschrift fuer Physik A,v.289,is.2,p.219,1979 2158100300018 (DEP,21582003) Pn for Rb-99(0,B-) 2158100300019 HISTORY (19800708C) G.C. 2158100300020 (20201211U) SD: DECAY-DATA of Rb-98 and Rb-99 corrected2158100300021 (missed comma before intensity added). 2158100300022 ENDBIB 20 0 2158100300023 COMMON 4 3 2158100300024 EN-DUMMY ELEMENT MONIT MONIT-ERR 2158100300025 EV NO-DIM PC/FIS PC/FIS 2158100300026 2.5300E-02 37. 0.17 0.04 2158100300027 ENDCOMMON 3 0 2158100300028 DATA 4 3 2158100300029 MASS DATA DATA-ERR DECAY-FLAG 2158100300030 NO-DIM PC/FIS PC/FIS NO-DIM 2158100300031 97. 4.6E-02 1.5E-02 1. 2158100300032 98. 2.2E-03 9.E-04 2. 2158100300033 99. 2.5E-04 1.3E-04 3. 2158100300034 ENDDATA 5 0 2158100300035 ENDSUBENT 34 0 2158100399999 NOSUBENT 21581004 20171021 22682158100400001 NOSUBENT 21581005 20171021 22682158100500001 ENDENTRY 5 0 2158199999999