ENTRY C2225 20160725 C162C222500000001 SUBENT C2225001 20160725 C162C222500100001 BIB 10 51 C222500100002 TITLE Confirmation of production of element 110 by the C222500100003 208Pb(64Ni,n) reaction C222500100004 AUTHOR (T.N.Ginter,K.E.Gregorich,W.Loveland,D.M.Lee, C222500100005 U.W.Kirbach,R.Sudowe,C.M.Folden III,J.B.Patin,N.Seward,C222500100006 P.A.Wilk,P.M.Zielinski,K.Aleklett,R.Eichler,H.Nitsche, C222500100007 D.C.Hoffman) C222500100008 INSTITUTE (1USABRK,1USAORU,1USAUCX,2UK SUR,2SWDUPP,2SWTPSI) C222500100009 REFERENCE (J,PR/C,67,064609,2003) C222500100010 FACILITY (CYCLO,1USABRK) Experiment performed at the LBNL 88- C222500100011 inch cyclotron facility using the Berkeley gas-filled C222500100012 separator. C222500100013 SAMPLE 208Pb target consisted of nine arc shaped segments, C222500100014 each with a 500-mg/cm2 thick lead layer sandwiched C222500100015 between layers of carbon with thicknesses of 40 C222500100016 mu-g/cm2 facing the beam and 2 mg/cm2. These segments C222500100017 were mounted around the periphery of a 14-inch C222500100018 diameter wheel which was rotated to minimize thermal C222500100019 stress on the target from beam heating wheel which C222500100020 was rotated to minimize thermal stress on the target C222500100021 from beam heating. C222500100022 DETECTOR (SPEC) Berkeley gas-filled separator (BGS) spatially C222500100023 separated the recoiling fusion evaporation residues C222500100024 (with E approx. 70 MeV) in flight from both beam C222500100025 particles and transfer reaction products on the basis C222500100026 of their differing magnetic rigidities within the C222500100027 separator's 0.88-torr helium atmosphere. The magnetic C222500100028 rigidity Br of the recoiling fusion evaporation C222500100029 residues (EVR) with Z=110 and A=271 was estimated to C222500100030 be 2.1 T m C222500100031 (SISD) EVR's were deposited at the BGS focal plane C222500100032 300-mm thick passivated ion implanted silicon C222500100033 detector with an active area of 116 mm (horizontal) x C222500100034 358 mm (vertical). Detector recorded the time, C222500100035 energy, and position of the implanted EVR's and of C222500100036 their subsequent alpha decays. Resistive charge C222500100037 division provided vertical position resolution within C222500100038 each strip C222500100039 (PPAC) Parallel plate avalanche counter placed 24 cm C222500100040 in front of the strip detector, recorded the time and C222500100041 position of recoiling ions before implantation. The C222500100042 presence or absence of signals from ions passing C222500100043 through the PPAC distinguished beam-related events in C222500100044 the strip detector and those from the alpha decay of C222500100045 previously implanted ions. C222500100046 METHOD (COINC) Coincidence of PPAC and SISD within the C222500100047 position resolution indicated existence of correlation C222500100048 between evaporation residues and their alpha decay. C222500100049 EVR were identified by alpha decay sequences. Two C222500100050 decay chains were observed. C222500100051 ERR-ANALYS (DATA-ERR) Sources of uncertainties unknown C222500100052 HISTORY (20160725C) Compiled by S.H. C222500100053 ENDBIB 51 0 C222500100054 NOCOMMON 0 0 C222500100055 ENDSUBENT 54 0 C222500199999 SUBENT C2225002 20160725 C162C222500200001 BIB 3 4 C222500200002 REACTION (82-PB-208(28-NI-64,N)110-DS-271,,SIG) C222500200003 STATUS (TABLE) Data taken from text, page 4 of the reference C222500200004 DECAY-DATA (110-DS-271,0.0011SEC,A,10.74,1.) C222500200005 (108-HS-267,0.06SEC,A,10.71,1.) C222500200006 ENDBIB 4 0 C222500200007 NOCOMMON 0 0 C222500200008 DATA 5 3 C222500200009 EN DATA +DATA-ERR -DATA-ERR DATA-MAX C222500200010 MEV PB PB PB PB C222500200011 306.7 7.7 C222500200012 309.2 8.3 11. 5.3 C222500200013 312.8 29. C222500200014 ENDDATA 5 0 C222500200015 ENDSUBENT 14 0 C222500299999 ENDENTRY 2 0 C222599999999