ENTRY C2292 20180404 C175C229200000001 SUBENT C2292001 20180404 C175C229200100001 BIB 10 48 C229200100002 TITLE Direct Measurement of the Key Ecm = 456 keV Resonance C229200100003 in the Astrophysical 19Ne(p,gamma) 20Na Reaction and C229200100004 Its Relevance for Explosive Binary Systems C229200100005 AUTHOR (R.Wilkinson,G.Lotay,A.Lennarz,C.Ruiz,G.Christian, C229200100006 C.Akers,W.N.Catford,A.A.Chen,D.Connolly,B.Davids, C229200100007 D.A.Hutcheon,D.Jedrejcic,A.M.Laird,L.Martin, C229200100008 E.McNeice,J.Riley,M.Williams) C229200100009 INSTITUTE (2UK SUR,2UK NPL,1CANTMF,1USATAM,1CANMCM,1USACSM, C229200100010 2UK YRK) C229200100011 REFERENCE (J,PRL,119,242701,2017) C229200100012 FACILITY (LINAC,1CANTMF) The experiment was carried out at the C229200100013 ISAC-I radioactive beam facility at TRIUMF. The ion C229200100014 beam was accelerated first by RFQ and then C229200100015 postaccelerated using a drift tube linac. C229200100016 SAMPLE Windowless gas target filled with H2 at a pressure of C229200100017 5 Torr. The beam energy was chosen in order to cover C229200100018 a center-of mass energy range Ecm = 447-465 keV C229200100019 across the volume of the gas target. C229200100020 DETECTOR (BGO) Array of 30 bismuth germanate (BGO) detectors C229200100021 surrounding the windowless gas target was used to C229200100022 detect gamma rays resulting from the (p,gamma) C229200100023 reaction, C229200100024 (MAGSP) 20Na6+ recoils were transmitted to the focal C229200100025 plane of DRAGON spectrometer and were identified using C229200100026 time-of-flight system and an isobutane-filled C229200100027 ionization chamber C229200100028 (MCPLT) Time-of-flight (TOF) system was based on two C229200100029 microchannel plates detecting secondary electron C229200100030 emission from thin diamondlike carbon foils. C229200100031 (IOCH) Ionization chamber was used to determine C229200100032 energy of recoil ions C229200100033 (SCIN) Number of incident 19Ne ions was determined by C229200100034 measuring 19Ne beta decays in two 6-mm-thick plastic C229200100035 scintillators located near an intermediate focus of C229200100036 the separator where the 6+ component of the unreacted C229200100037 beam was stopped. C229200100038 METHOD (TOF,EDE,GSPEC,COINC) Inverse kinematics was used C229200100039 INC-SOURCE (SPALL) An intense radioactive beam (RIB) of 19Ne in C229200100040 a 1+ charge state was produced by bombarding a SiC C229200100041 target with 500 MeV protons. Products of mass approx. C229200100042 19 amu were extracted and ionized in a Forced C229200100043 Electron Beam Induced Arc Discharge ion source and C229200100044 filtered using a high resolution mass separator. This C229200100045 beam was then injected into a radio-frequency C229200100046 quadrupole accelerator for an initial acceleration. C229200100047 The average 19Ne beam intensity was found to be C229200100048 approx. 7E+6 ions per sec. C229200100049 HISTORY (20180404C) Compiled by S.H. C229200100050 ENDBIB 48 0 C229200100051 COMMON 1 3 C229200100052 EN C229200100053 MEV C229200100054 9.24 C229200100055 ENDCOMMON 3 0 C229200100056 ENDSUBENT 55 0 C229200199999 SUBENT C2292002 20180404 C175C229200200001 BIB 3 6 C229200200002 REACTION 1(10-NE-19(P,0),,EN) C229200200003 2(10-NE-19(P,G),,WID) C229200200004 STATUS (TABLE) Data taken from text p. 4 of the reference C229200200005 ERR-ANALYS (DATA-ERR) Source of uncertainties not described C229200200006 (ERR-S) Statistical uncertainty C229200200007 (ERR-SYS) Systematic uncertainty C229200200008 ENDBIB 6 0 C229200200009 NOCOMMON 0 0 C229200200010 DATA 10 2 C229200200011 DATA-CM 1+DATA-ERR 1-DATA-ERR 1DATA 2+DATA-ERR 2-DATA-ERR 2C229200200012 +ERR-S 2-ERR-S 2+ERR-SYS 2-ERR-SYS 2 C229200200013 KEV KEV KEV MILLI-EV MILLI-EV MILLI-EV C229200200014 MILLI-EV MILLI-EV MILLI-EV MILLI-EV C229200200015 218. 5. 2. 19.2 8.1 5.7 C229200200016 C229200200017 456. 5. 2. 17. C229200200018 7. 5. 3. 3. C229200200019 ENDDATA 8 0 C229200200020 ENDSUBENT 19 0 C229200299999 ENDENTRY 2 0 C229299999999