ENTRY O1704 20101021 O044O170400000001 SUBENT O1704001 20101021 O044O170400100001 BIB 14 58 O170400100002 TITLE Interaction of F-17 with a Pb-208 target below the O170400100003 Coulomb barrier. O170400100004 AUTHOR (C.Signorini,D.Pierroutsakou, B.Martin, M.Mazzocco, O170400100005 T.Clodariu, R.Bonetti, A.Guglielmetti, M.La Commara, O170400100006 M.Romoli, M.Sandoli, H.Esbensen, F.Farinon, P.Molini, O170400100007 C.Parascandolo, F.Soramel, S.Sidortchuk, L.Stroe) O170400100008 REFERENCE (J,EPJ/A,44,63,2010) Final data O170400100009 (J,EPJ/ST,150,47,2007) Prelim. data O170400100010 INSTITUTE (2ITYPAD) Physics department and INFN, via Marzolo O170400100011 and INFN, Legnaro Nazionally Laboratory, Padova,ItalyO170400100012 (2ITYNAP) INFN - Sezione di Napoli, via Cinthia, O170400100013 Napoli, Italy O170400100014 (3RUMBUC) O170400100015 (2ITYCIS) O170400100016 (1USAANL) O170400100017 (2GERGSI) O170400100018 (4ZZZDUB) O170400100019 FACILITY (VDGT,2ITYPAD) The LNL-tandem XTU accelerator O170400100020 An important feature of this system is the large O170400100021 secondary beam acceptance of its optics elements and O170400100022 its large capability to suppress all the unwanted O170400100023 scattered beams. O170400100024 INC-SOURCE The F-17 secondary beam was obtained through the O170400100025 reaction p(O-17,F-17)n of E(lab)=104 MeV impinging ontoO170400100026 a gas target filled with pure H-2 at a pressure of O170400100027 800 mb and at room temperature, corresponding to a O170400100028 thickness of 0.323 mg/cm**2. O170400100029 SAMPLE A 1 mg/cm**2 thick Pb-208 self-supporting targets was O170400100030 used. O170400100031 METHOD (EDE) O170400100032 (EXTB) O170400100033 (COINC) The exclusive breakup process was studied via O170400100034 8-O-16 and p coincidences. O170400100035 MONITOR (79-AU-197(9-F-17,EL)79-AU-197,,DA) the elastic O170400100036 scattering cross section on a 2 mg/cm**2 thick Au-197 O170400100037 self-supporting target. O170400100038 DETECTOR (SPEC) The reaction products were detected with EXODET O170400100039 array, consisted of 16 solid state Si detectors O170400100040 arranged in 8 two-stage delta-E-E telescopes. Each O170400100041 EXODET detector had an active ares of 50 mm*50 mm. O170400100042 The thickness of the Si detectors was 40(70) mum for O170400100043 six (two) delta-E layers and 500 mum for all the E O170400100044 layers. O170400100045 (TELES,SI,SI) See above O170400100046 COMMENT *By authors*.Since the energy resolution did not allow O170400100047 to resolve the first F-17 excited state, the data have O170400100048 to be considered as quasi-elastic. The contribution of O170400100049 this inelastic excitation to the reaction cross-sectionO170400100050 was evaluated around 35 mb. O170400100051 STATUS (TABLE).Table 1 of J,EPJ/A,44,63,2010 O170400100052 HISTORY (20081120C) SB O170400100053 (20101021A).Entry was re-compiler after publication O170400100054 final data in J,EPJ/A,44,63,2010 O170400100055 ADD-RES The upper limit of the reaction cross-section O170400100056 compatible with experimental data that authors call O170400100057 quasi-elastic reaction cross-section is 5 mb. This O170400100058 cross-section includes all the non-elastic processes O170400100059 except the excitation of the first F-17 level. O170400100060 ENDBIB 58 0 O170400100061 NOCOMMON 0 0 O170400100062 ENDSUBENT 61 0 O170400199999 SUBENT O1704002 20110225 O044O170400200001 BIB 5 29 O170400200002 REACTION 1(82-PB-208(9-F-17,P+8-O-16)82-PB-208,,SIG) O170400200003 2(82-PB-208(9-F-17,NON),,SIG,,,CALC) O170400200004 3(82-PB-208(9-F-17,INL)82-PB-208,,SIG,,,CALC) O170400200005 ANALYSIS For inelastic cross section calculation was used the O170400200006 code FRESCO, within the DWBA approach, using the O170400200007 optical model parameters obtained from the previous O170400200008 analysis and including the possibility to excite also O170400200009 the first F-17 excited state. O170400200010 PART-DET (P,8-O-16) O170400200011 COMMENT *By authors*.To identify exclusive breakup events in O170400200012 the analysis was required the detection of both the O170400200013 O-16 and the proton, by imposing the following O170400200014 conditions-the total energy of the two detected O170400200015 particles was required to be in the elastic peak O170400200016 region. O170400200017 The breakup cross-section was obtained from the numberO170400200018 of coincident events taking into account the following O170400200019 data: O170400200020 - the intrinsic efficiency for protons and 16O ions in O170400200021 each stage of the forward telescopes, O170400200022 - solid angle coverage from a Monte Carlo simulation O170400200023 based on the breakup process kinematics, assuming an O170400200024 excitation energy of 0.5 MeV above the breakup O170400200025 threshold and including the geometry of the EXODET O170400200026 apparatus, O170400200027 - normalization of the obtained yield to the RutherfordO170400200028 cross-section (at forward angles). O170400200029 ERR-ANALYS (ERR-S).The statistical error is reported by authors inO170400200030 table. O170400200031 ENDBIB 29 0 O170400200032 NOCOMMON 0 0 O170400200033 DATA 5 3 O170400200034 EN DATA 1ERR-S DATA 2DATA 3 O170400200035 MEV MB MB MB MB O170400200036 86.0 0.6 0.4 40. 35. O170400200037 90.4 74. 38. O170400200038 98.0 404. 45. O170400200039 ENDDATA 5 0 O170400200040 ENDSUBENT 39 0 O170400299999 ENDENTRY 2 0 O170499999999