ENTRY C3063 20250506 C306300000001 SUBENT C3063001 20250506 20251001 C306300100001 BIB 10 29 C306300100002 TITLE Probing proton cross-shell excitations through the C306300100003 two-neutron removal from 38Ca C306300100004 AUTHOR (T.Beck,A.Gade,B.A.Brown,J.A.Tostevin,D.Weisshaar, C306300100005 D.Bazin,K.W.Brown,R.J.Charity,P.J.Farris, C306300100006 S.A.Gillespie,A.M.Hill,J.Li,B.Longfellow,W.Reviol, C306300100007 D.Rhodes) C306300100008 REFERENCE (J,PR/C,108,L061301,2023) C306300100009 #doi:10.1103/PhysRevC.108.L061301 C306300100010 INSTITUTE (1USAMSU,2UK SUR,1USAWAS,1USAANL) C306300100011 FACILITY (CYCLO,1USAMSU) The Coupled Cyclotron Facility of the C306300100012 National Superconducting Cyclotron Laboratory. C306300100013 INC-SPECT The resulting secondary beam, which exhibited an C306300100014 approximately 85% purity in 38Ca and a typical rate C306300100015 of 1.6*10**5 38Ca ions per second. The mid target C306300100016 energy of the 38Ca projectiles was 60.9 MeV/u, C306300100017 corresponding to a velocity of v/c ~ 0.345. C306300100018 DETECTOR (HPGE,SPEC,SCIN) The high-resolution gamma-ray C306300100019 tracking array GRETINA, consisting of 12 detector C306300100020 modules; each of which contains four 36-fold C306300100021 segmented high-purity germanium crystals. The C306300100022 particle identification in the entrance and exit C306300100023 channel was performed on an event-by-event basis C306300100024 using plastic timing scintillators and the S800 C306300100025 focal-plane detection system. C306300100026 SAMPLE Secondary 188 mg/cm2 thick 9Be target located at the C306300100027 target position of the S800 magnetic spectrograph. C306300100028 ERR-ANALYS (ERR-S) The statistical uncertainties. C306300100029 (ERR-SYS) The systematic uncertainties. C306300100030 HISTORY (20250506C) BP C306300100031 ENDBIB 29 0 C306300100032 COMMON 1 3 C306300100033 EN C306300100034 MEV/A C306300100035 60.9 C306300100036 ENDCOMMON 3 0 C306300100037 ENDSUBENT 36 0 C306300199999 SUBENT C3063002 20250506 20251001 C306300200001 BIB 4 13 C306300200002 REACTION (4-BE-9(20-CA-38,X)20-CA-36,PAR,SIG) C306300200003 METHOD (COINC) Employing particle-gamma coincidences, the C306300200004 exclusive cross sections to the 0+ and 2+1 states are C306300200005 obtained. Lacking a gamma-ray detectable in GRETINA, C306300200006 exclusive cross sections to the 0+1 and 0+2 states C306300200007 are indistinguishable. In the following, their summed C306300200008 cross section is denoted sigma(0+) = sigma(0+1) + C306300200009 sigma(0+2). C306300200010 ANALYSIS Exclusive 2+1 cross section was subtracted from the C306300200011 inclusive cross section to obtain 0+ value. C306300200012 STATUS (DEP,C3063003) C306300200013 (DEP,C3063004) C306300200014 (TABLE,,T.Beck+,J,PR/C,108,L061301,2023) Table - I C306300200015 ENDBIB 13 0 C306300200016 COMMON 1 3 C306300200017 E-LVL C306300200018 MEV C306300200019 0.0 C306300200020 ENDCOMMON 3 0 C306300200021 DATA 3 1 C306300200022 DATA ERR-S ERR-SYS C306300200023 MB MB MB C306300200024 0.292 0.008 0.08 C306300200025 ENDDATA 3 0 C306300200026 ENDSUBENT 25 0 C306300299999 SUBENT C3063003 20250506 20251001 C306300300001 BIB 3 5 C306300300002 REACTION (4-BE-9(20-CA-38,X)20-CA-36,PAR,SIG) C306300300003 METHOD (COINC) Employing particle-gamma coincidences, the C306300300004 exclusive cross sections to the 0+ and 2+1 states are C306300300005 obtained. C306300300006 STATUS (TABLE,,T.Beck+,J,PR/C,108,L061301,2023) Table - I C306300300007 ENDBIB 5 0 C306300300008 COMMON 1 3 C306300300009 E-LVL C306300300010 MEV C306300300011 3.046 C306300300012 ENDCOMMON 3 0 C306300300013 DATA 3 1 C306300300014 DATA ERR-S ERR-SYS C306300300015 MB MB MB C306300300016 0.116 0.006 0.003 C306300300017 ENDDATA 3 0 C306300300018 ENDSUBENT 17 0 C306300399999 SUBENT C3063004 20250506 20251001 C306300400001 BIB 4 13 C306300400002 REACTION (4-BE-9(20-CA-38,X)20-CA-36,,SIG) C306300400003 METHOD (TOF) The outgoing reaction residues were C306300400004 distinguished based on their energy loss determined C306300400005 in the S800 ionization chamber and the time of flight C306300400006 measured between the object position of the analysis C306300400007 beam line and the plastic scintillator at the back of C306300400008 the S800 focal plane. C306300400009 ANALYSIS The inclusive two-neutron removal cross section for C306300400010 the formation of 36Ca was determined from the C306300400011 efficiency corrected number of 36Ca residues detected C306300400012 in the S800 focal plane, the number of incident 38Ca C306300400013 projectiles, and the areal density of the target. C306300400014 STATUS (TABLE,,T.Beck+,J,PR/C,108,L061301,2023) Table - I C306300400015 ENDBIB 13 0 C306300400016 NOCOMMON 0 0 C306300400017 DATA 3 1 C306300400018 DATA ERR-S ERR-SYS C306300400019 MB MB MB C306300400020 0.408 0.009 0.012 C306300400021 ENDDATA 3 0 C306300400022 ENDSUBENT 21 0 C306300499999 ENDENTRY 4 0 C306399999999