ENTRY C1884 20120110 C115C188400000001 SUBENT C1884001 20120110 C115C188400100001 BIB 12 52 C188400100002 TITLE Near-barrier fusion of the 8B + 58Ni proton-halo systemC188400100003 AUTHOR (E.F.Aguilera,P.Amador-Valenzuela,E.Martinez-Quiroz, C188400100004 D.Lizcano,P.Rosales, H.Garcia-Martinez, C188400100005 A.Gomez-Camacho,J.J.Kolata,A.Roberts,L.O.Lamm, C188400100006 G.Rogachev,V.Guimaraes,F.D.Becchetti,A.Villano, C188400100007 M.Ojaruega,M.Febbraro,Y.Chen,H.Jiang,P.A.Deyoung, C188400100008 G.F.Peaslee,C.Guess,U.Khadka,J.Brown,J.D.Hinnefeld, C188400100009 L.Acosta,E.S.Rossi Jr,J.F.P.Huiza,T.L.Belyaeva) C188400100010 INSTITUTE (3MEXINI,1USANOT,1USAMHG,1USAISB,3BZLUSP,1USAHPE, C188400100011 1USAISB) C188400100012 (1USAUSA)Wabash College,Crawfordsville, Indiana C188400100013 (2SPNSPN)Universidad de Huelva,Huelva C188400100014 (3BZLBZL)UNIFIEO-Centro Universitario FIEO-CEP, C188400100015 Osasco-SP C188400100016 (3BZLBZL)Universidade Estadual do Sudoeste da C188400100017 Bahia,Bahia C188400100018 (3MEXMEX)Universidad Autonoma del Estado de Mexico, C188400100019 Toluca C188400100020 REFERENCE (J,PRL,107,092701,2011) Main reference C188400100021 (J,JP/CS,322,012007,2011) Preliminary data C188400100022 FACILITY (VDGT,1USANOT) Experiment performed at the TwinSol C188400100023 facility at the University of Notre Dame. C188400100024 SAMPLE Several samples of natural Ni or enriched 58Ni were C188400100025 used during experiment. The thickness of natural C188400100026 samples varied between 1.36 and 5.60 mg/cm2. C188400100027 Thickness of enriched 58Ni samples varied between C188400100028 0.725 and 0.924 mg/cm2. C188400100029 DETECTOR (TELES,SIBAR,SIBAR) Several dE-E silicon surface- C188400100030 barrier telescopes were used at backward angles to C188400100031 detect protons evaporated from the fused system. C188400100032 Either three telescopes at 120,135 and 150 deg or C188400100033 four telescopes at 112.5, 127.5,142.5 and 157.5 deg C188400100034 were used in various experimental runs. C188400100035 METHOD (EDE,TOF) C188400100036 INC-SOURCE The 8B beams were generated using the 3He(6Li,8B) C188400100037 reaction at the TwinSol facility at the University of C188400100038 Notre Dame. Primary 6Li3+ beams with energies between C188400100039 31 and 38 MeV produced the 8B beams with energies C188400100040 between 22.4 and 30.0 MeV. Primary beam currents for C188400100041 the different stages varied from 50 to 220 particle- C188400100042 nanoamperes (pnA), yielding secondary beam rates of C188400100043 (0.5-2.7)E+4 ions/s. The most relevant contaminants C188400100044 and typical yields (relative to 8B) were 3He2+ (45%) C188400100045 and 7Li3(45%). C188400100046 ANALYSIS Cross section are based on measurement of protons C188400100047 evaporated from fused system in backward direction. C188400100048 Fusion cross sections values are based on the C188400100049 assumption that complete fusion (CF) is the only C188400100050 mechanism responsible for the observed proton C188400100051 yields C188400100052 ERR-ANALYS (DATA-ERR) No information given C188400100053 HISTORY (20120110C) Compiled by S.H. C188400100054 ENDBIB 52 0 C188400100055 NOCOMMON 0 0 C188400100056 ENDSUBENT 55 0 C188400199999 SUBENT C1884002 20120110 C115C188400200001 BIB 3 10 C188400200002 REACTION (28-NI-58(5-B-8,FUS),,SIG) C188400200003 STATUS (TABLE) Data presented in fig. 2 of the PLR 107 C188400200004 reference sent by author (E.F.A) C188400200005 MISC-COL (MISC) Effective fusion energies were determined C188400200006 iteratively and include a correction for mean C188400200007 energy loss in the target obtained by using C188400200008 successive Wong-model fits to the data as C188400200009 weighting functions. Cross sections data as C188400200010 sent by author depend on fusion energy. C188400200011 Tab. 1 was used to convert to CM energy C188400200012 ENDBIB 10 0 C188400200013 NOCOMMON 0 0 C188400200014 DATA 5 10 C188400200015 EN-CM DATA DATA-ERR MISC MISC-ERR C188400200016 MEV MB MB MEV MEV C188400200017 15.2 28.8 3.9 18.9 0.2 C188400200018 19.4 113.0 42.0 20.1 0.3 C188400200019 21.1 212.0 53.0 21.2 0.3 C188400200020 21.7 390.0 74.0 22.1 0.3 C188400200021 22.0 408.0 75.0 22.1 0.2 C188400200022 23.25 491.0 130.0 23.3 0.4 C188400200023 23.6 608.0 124.0 23.7 0.3 C188400200024 23.7 568.0 157.0 23.8 0.3 C188400200025 25.0 713.0 211.0 25.0 0.3 C188400200026 25.5 865.0 162.0 25.6 0.3 C188400200027 ENDDATA 12 0 C188400200028 ENDSUBENT 27 0 C188400299999 ENDENTRY 2 0 C188499999999