ENTRY C2284 20220104 C210C228400000001 SUBENT C2284001 20220104 C210C228400100001 BIB 11 59 C228400100002 TITLE Direct measurement of astrophysically important C228400100003 resonances in 38K(p,gamma)39Ca C228400100004 AUTHOR (G.Christian,G.Lotay,C.Ruiz,C.Akers,D.S.Burke, C228400100005 W.N.Catford,A.A.Chen,D.Connolly,B.Davids,J.Fallis, C228400100006 U.Hager,D.Hutcheon,A.Mahl,A.Rojas,X.Sun) C228400100007 INSTITUTE (1USATAM,1CANTMF,2UK SUR,2UK YRK,1CANMCM,1USACSM, C228400100008 1CANMCG) C228400100009 REFERENCE (J,PR/C,97,025802,2018) Main reference C228400100010 (J,PRL,116,132701,2016) Primary reference C228400100011 FACILITY (LINAC,1CANTMF) Experiment was performed in the ISAC- C228400100012 I facility at TRIUMF, Canada's national laboratory C228400100013 for particle and nuclear physics. C228400100014 SAMPLE Windowless hydrogen gas target filled with H2 at an C228400100015 average pressure and temperature of 10.6 mbar C228400100016 and 298 K, respectively. C228400100017 DETECTOR (BGO) Array of 30 bismuth germanate (BGO) detectors C228400100018 surrounding the windowless gas target was used to C228400100019 detect gamma rays resulting from the (p,gamma) C228400100020 reaction, C228400100021 (MAGSP) 39Ca recoils were transmitted to the focal C228400100022 plane of DRAGON spectrometer and were identified using C228400100023 time-of-flight system and an isobutane-filled C228400100024 ionization chamber C228400100025 (MCPLT) Time-of-flight (TOF) system was based on two C228400100026 microchannel plates detecting secondary electron C228400100027 emission from thin diamondlike carbon foils. C228400100028 (IOCH) The total kinetic energy and stopping power C228400100029 of the recoil ions was measured in a multi-anode C228400100030 ionization chamber C228400100031 (SCIN) Number of incident 19Ne ions was determined by C228400100032 measuring 19Ne beta decays in two 6-mm-thick plastic C228400100033 scintillators located near an intermediate focus of C228400100034 the separator where the 6+ component of the unreacted C228400100035 beam was stopped. C228400100036 METHOD (COINC) Coincidences between gamma rays detected in C228400100037 BGO array and recoil nuclei, detected by ionization C228400100038 chamber was required. C228400100039 Inverse kinematics was used C228400100040 INC-SOURCE (SPALL) A beam of radioactive 38K was produced by C228400100041 impinging 500 MeV protons from the TRIUMF cyclotron C228400100042 onto a high-power TiC production target. The 38K(1+) C228400100043 produced by spallation reactions in the target C228400100044 were extracted and sent through a high-resolution C228400100045 mass separator. They were then charge bred to the 7+ C228400100046 charge state in an electron cyclotron resonance (ECR) C228400100047 charge state booster before post-acceleration in C228400100048 ISAC-1 radiofrequency quadrupole. C228400100049 ERR-ANALYS Possible systematic uncertainty connected with 38Ar C228400100050 background is discussed in detail on p.7 of the articleC228400100051 (ERR-2) Systematic uncertainty in beam current C228400100052 (ERR-3) Systematic uncertainty in GBO efficiency C228400100053 (ERR-4) Systematic uncertainty stopping power C228400100054 (ERR-5) Systematic uncertainty in MCP transmission C228400100055 (ERR-6) Systematic uncertainty in charge state fractionC228400100056 (ERR-7) Systematic uncertainty in MCP efficiency C228400100057 (ERR-8) Systematic uncertainty in live time C228400100058 HISTORY (20180417C) Compiled by S.H. C228400100059 (20210924A) S.H. Added primary reference in PRL C228400100060 Corrected reaction record in sub2 C228400100061 ENDBIB 59 0 C228400100062 COMMON 7 6 C228400100063 ERR-2 ERR-3 ERR-4 ERR-5 ERR-6 ERR-7 C228400100064 ERR-8 C228400100065 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT C228400100066 PER-CENT C228400100067 12. 10. 3.5 2.7 1.0 0.3 C228400100068 0.002 C228400100069 ENDCOMMON 6 0 C228400100070 ENDSUBENT 69 0 C228400199999 SUBENT C2284002 20220104 C210C228400200001 BIB 4 8 C228400200002 REACTION 1(19-K-38(P,0),,EN) C228400200003 2((1-H-1(19-K-38,G),,WID/STR)= C228400200004 (19-K-38(P,G),,WID/STR)) C228400200005 STATUS (TABLE) Data taken from text, p.6, C228400200006 Phys.Rev.C97,025802,2018 C228400200007 ERR-ANALYS (ERR-S) Statistical uncertainty C228400200008 (ERR-SYS) Systematic uncertainty C228400200009 HISTORY (20210924A) S.H. Corrected reaction record C228400200010 ENDBIB 8 0 C228400200011 NOCOMMON 0 0 C228400200012 DATA 9 1 C228400200013 DATA-CM 1+ERR-S 1-ERR-S 1ERR-SYS 1DATA 2+ERR-S 2C228400200014 -ERR-S 2+ERR-SYS 2-ERR-SYS 2 C228400200015 KEV KEV KEV KEV MILLI-EV MILLI-EV C228400200016 MILLI-EV MILLI-EV MILLI-EV C228400200017 679. 2. 1. 1. 120. 50. C228400200018 30. 20. 60. C228400200019 ENDDATA 6 0 C228400200020 ENDSUBENT 19 0 C228400299999 ENDENTRY 2 0 C228499999999