ENTRY F1273 20220825 F094F1273 0 1 SUBENT F1273001 20220825 F094F1273 1 1 BIB 12 42 F1273 1 2 TITLE Experiments on the synthesis of superheavy nuclei F1273 1 3 Fl-284 and Fl-285 in the Pu-239,240 + Ca-48 reactions. F1273 1 4 AUTHOR (V.K.Utyonkov,N.T.Brewer,Yu.Ts.Oganessian, F1273 1 5 K.P.Rykaczewski,F.Sh.Abdullin,S.N.Dmitriev, F1273 1 6 R.K.Grzywacz,M.G.Itkis,K.Miernik,A.N.Polyakov, F1273 1 7 J.B.Roberto,R.N.Sagaidak,I.V.Shirokovsky, F1273 1 8 M.V.Shumeiko,Yu.S.Tsyganov,A.A.Voinov,V.G.Subbotin, F1273 1 9 A.M.Sukhov,A.V.Sabel'nikov,G.K.Vostokin,J.H.Hamilton, F1273 1 10 M.A.Stoyer,S.Y.Strauss) F1273 1 11 INSTITUTE (4ZZZDUB) Flerov Laboratory of Nuclear Reactions F1273 1 12 (1USAORL) Physics Division F1273 1 13 Science and Technology Partnerships DirectorateF1273 1 14 (1USATEN) Department of Physics and Astronomy F1273 1 15 (3POLWWA) Faculty of Physics F1273 1 16 (1USAVBT) Department of Physics and Astronomy F1273 1 17 (1USALRL) Nuclear and Chemical Sciences Division F1273 1 18 (1USANOT) Department of Physics F1273 1 19 REFERENCE (J,PR/C,92,034609,2015) F1273 1 20 #doi:10.1103/PhysRevC.92.034609 F1273 1 21 FACILITY (CYCLO,4ZZZDUB) U-400 F1273 1 22 SAMPLE The target was prepared by depositing of PuO(2) onto F1273 1 23 Ti foil (0.71-0.72 mg/cm2 thickness). F1273 1 24 INC-SOURCE The maximum intensity was 1.3 particle mu-A. F1273 1 25 DETECTOR (MAGSP,MWPC) For nucleus separation Dubna Gas-Filled F1273 1 26 Recoil Separator was used. Recoil nucleus passed F1273 1 27 through time-of-flight system consisted of multiwire F1273 1 28 proportional counters. The distance between them was F1273 1 29 65 mm. F1273 1 30 (SI) For registration of alpha-particles of residual F1273 1 31 nucleus focal-plane detector was used. The system F1273 1 32 included a 0.3-mm-thick double-sided silicon detector F1273 1 33 (DSSD) which has 1-mm-wide strips, 48 on the front F1273 1 34 side and 128 on the back side. The recoil implantation F1273 1 35 counter was surrounded by six single Si detectors, eachF1273 1 36 500 microns thick and having an active area of 65 mm byF1273 1 37 by 120 mm. F1273 1 38 METHOD (TOF,ASPEC) F1273 1 39 ADD-RES (DECAY) F1273 1 40 STATUS (APRVD) Entry was approved by authors F1273 1 41 HISTORY (20151211C) F1273 1 42 (20220825A) DECAY-DATA and REACTION records in Sub 002 F1273 1 43 were changed. F1273 1 44 ENDBIB 42 0 F1273 1 45 COMMON 1 3 F1273 1 46 EN-ERR F1273 1 47 MEV F1273 1 48 1. F1273 1 49 ENDCOMMON 3 0 F1273 1 50 ENDSUBENT 49 0 F1273 199999 SUBENT F1273002 20220825 F094F1273 2 1 BIB 6 13 F1273 2 2 REACTION (94-PU-240(20-CA-48,3N)114-FL-285,,SIG) F1273 2 3 DECAY-DATA (114-FL-285,0.15SEC,A,10410.) F1273 2 4 Half-life error: (+0.14/-0.05) s. F1273 2 5 SAMPLE (94-PU-240,ENR=0.9897) F1273 2 6 (94-PU-240,ENR=0.92) A mixed sample with the average F1273 2 7 thickness of 0.39+/-0.04 mg/cm2. F1273 2 8 ERR-ANALYS (DATA-ERR) Errors include statistical and systematic F1273 2 9 uncertainties, error of nuclei transmission and F1273 2 10 registration efficiency. F1273 2 11 (ERR-EDD) Error of alpha energy value F1273 2 12 STATUS (TABLE) Data were taken from the text (page 034609-5). F1273 2 13 HISTORY (20220825A) SF4 in REACTION record was changed, F1273 2 14 114-FL-285-M->114-FL-285. Correction in DECAY-DATA. F1273 2 15 ENDBIB 13 0 F1273 2 16 NOCOMMON 0 0 F1273 2 17 DATA 5 1 F1273 2 18 EN DATA +DATA-ERR -DATA-ERR ERR-EDD F1273 2 19 MEV PB PB PB MEV F1273 2 20 245. 2.5 2.9 1.4 0.05 F1273 2 21 ENDDATA 3 0 F1273 2 22 ENDSUBENT 21 0 F1273 299999 SUBENT F1273003 20151211 F060F1273 3 1 BIB 5 9 F1273 3 2 REACTION (94-PU-240(20-CA-48,4N)114-FL-284,,SIG) F1273 3 3 DECAY-DATA (114-FL-284,2.5MSEC,SF) F1273 3 4 Half-life error: (+1.8/-0.8) ms. F1273 3 5 SAMPLE (94-PU-240,ENR=0.9897) F1273 3 6 (94-PU-240,ENR=0.92) A mixed sample with the average F1273 3 7 thickness of 0.39+/-0.04 mg/cm2. F1273 3 8 ERR-ANALYS (DATA-ERR) Errors include account probability for F1273 3 9 detection. F1273 3 10 STATUS (TABLE) Data were taken from the text (page 034609-6). F1273 3 11 ENDBIB 9 0 F1273 3 12 NOCOMMON 0 0 F1273 3 13 DATA 4 1 F1273 3 14 EN DATA +DATA-ERR -DATA-ERR F1273 3 15 MEV PB PB PB F1273 3 16 250. 2.6 3.3 1.7 F1273 3 17 ENDDATA 3 0 F1273 3 18 ENDSUBENT 17 0 F1273 399999 SUBENT F1273004 20151211 F060F1273 4 1 BIB 5 8 F1273 4 2 REACTION (94-PU-239(20-CA-48,3N)114-FL-284,,SIG) F1273 4 3 DECAY-DATA (114-FL-284,2.5MSEC,SF) F1273 4 4 Half-life error: (+1.8/-0.8) ms. F1273 4 5 SAMPLE (94-PU-239,ENR=0.982) The average thickness of the F1273 4 6 target is 0.50+/-0.05 mg/cm2. F1273 4 7 ERR-ANALYS (DATA-ERR) Errors include account probability for F1273 4 8 detection. F1273 4 9 STATUS (TABLE) Data were taken from the text (page 034609-7). F1273 4 10 ENDBIB 8 0 F1273 4 11 NOCOMMON 0 0 F1273 4 12 DATA 4 1 F1273 4 13 EN DATA +DATA-ERR -DATA-ERR F1273 4 14 MEV PB PB PB F1273 4 15 245. 0.23 0.59 0.20 F1273 4 16 ENDDATA 3 0 F1273 4 17 ENDSUBENT 16 0 F1273 499999 ENDENTRY 4 0 F127399999999