ENTRY C3052 20250326 C305200000001 SUBENT C3052001 20250326 20250711 C305200100001 BIB 8 37 C305200100002 TITLE First Measurement of a Weak r-Process Reaction on a C305200100003 Radioactive Nucleus C305200100004 AUTHOR (M.Williams,C.Angus,A.M.Laird,B.Davids,C.Aa.Diget, C305200100005 A.Fernandez,E.J.Williams,A.N.Andreyev,H.Asch,A.A.Avaa, C305200100006 G.Bartram,S.Chakraborty,I.Dillmann,K.Directo, C305200100007 D.T.Doherty,E.Geerlof,C.J.Griffin,A.Grimes,G.Hackman, C305200100008 J.Jeong,M.C.Jimenez De Haro,V.Karayonchev,A.Katrusiak, C305200100009 A.Lennarz,G.Lotay,B.Marlow,M.S.Martin,S.Mollo,F.Montes,C305200100010 J.R.Murias,J.O'Neill,K.Pak,C.Paxman,L.Pedro-Botet, C305200100011 A.Psaltis,E.Raleigh-Smith,D.Rhodes,J.S.Rojo, C305200100012 M.Satrazani,T.Sauvage,C.Shenton,C.E.Svensson,D.Tam, C305200100013 L.Wagner,D.Yates) C305200100014 REFERENCE (J,PRL,134,112701,2025) C305200100015 #doi:10.1103/PhysRevLett.134.112701 C305200100016 INSTITUTE (2UK SUR,1CANTMF,2UK YRK,1CANSFU,2SPNSEU,1CANMCM, C305200100017 2SPNUPC,1USAMSU,2GERTHD,2UK LVP,2FR CRI,1CANUBC) C305200100018 (3KORKOR) Department of Nuclear Engineering, Hanyang C305200100019 University, Seoul, 04763, Republic of Korea C305200100020 FACILITY (CYCLO,1CANTMF) The ISAC-II facility of TRIUMF, C305200100021 Canada's national particle accelerator center. C305200100022 DETECTOR (HPGE,PPAC,IOCH) Prompt gamma-rays resulting from C305200100023 (alpha,n) reactions were detected using the TIGRESS C305200100024 high-purity germanium (HPGe) array, in coincidence C305200100025 with heavy-ion recoils transmitted to the focal plane C305200100026 of the EMMA recoil mass spectrometer. Detectors at C305200100027 the focal plane of EMMA comprised a position- C305200100028 sensitive parallel grid avalanche counter (PGAC), C305200100029 followed by an ionization chamber and an C305200100030 ion-implanted silicon detector. C305200100031 METHOD (COINC) Only the PGAC signals were used for recoil C305200100032 gamma coincidence identification, with an associated C305200100033 94(1) % detection efficiency from the wire grid C305200100034 transparency. Specifically, the reaction kinematics, C305200100035 energy loss, and straggling of recoils passing C305200100036 through the target and degrader foil were simulated C305200100037 using GEANT4. C305200100038 HISTORY (20250326C) BP C305200100039 ENDBIB 37 0 C305200100040 NOCOMMON 0 0 C305200100041 ENDSUBENT 40 0 C305200199999 SUBENT C3052002 20250326 20250711 C305200200001 BIB 5 8 C305200200002 REACTION (36-KR-86(A,N)38-SR-89,PAR,SIG,G) C305200200003 SAMPLE The 86Kr beams were impinged on Si:He targets with C305200200004 helium contents of 6.15(31)*10**18 atoms/cm2. C305200200005 ANALYSIS Cross sections were derived from the inverse C305200200006 kinematics measurement with 86Kr beam and 4He target. C305200200007 ERR-ANALYS (ERR-S) Statistical uncertainties. C305200200008 (ERR-SYS) Systematic uncertainties. C305200200009 STATUS (TABLE,,M.Williams,J,PRL,134,112701,2025) - Table I C305200200010 ENDBIB 8 0 C305200200011 NOCOMMON 0 0 C305200200012 DATA 6 5 C305200200013 EN-CM EN-RSL E DATA ERR-SYS ERR-S C305200200014 MEV MEV KEV MB MB MB C305200200015 9.05 0.03 1032. 0.608 0.093 0.10C305200200016 9.05 0.04 1473. 1.09 0.16 0.39C305200200017 10.31 0.05 1032. 4.35 0.70 0.59C305200200018 10.45 0.06 2079. 9.2 1.5 1.1C305200200019 10.47 0.06 1473. 10.5 1.7 1.5C305200200020 ENDDATA 7 0 C305200200021 ENDSUBENT 20 0 C305200299999 SUBENT C3052003 20250326 20250711 C305200300001 BIB 5 11 C305200300002 REACTION (38-SR-94(A,N)40-ZR-97,PAR,SIG,G) C305200300003 SAMPLE The 94Sr beams were impinged on Si:He targets with C305200300004 helium contents of 7.95(45)*10**18 atoms/cm2. C305200300005 ANALYSIS Cross sections were derived from the inverse C305200300006 kinematics measurement with 94Sr beam and 4He target. C305200300007 ERR-ANALYS (ERR-S) Statistical uncertainties. C305200300008 (ERR-SYS) Systematic uncertainties. C305200300009 (ERR-1) The 20% relative uncertainty in the C305200300010 transmission efficiency of 97Zr recoils is the C305200300011 dominant systematic error in our measurement. C305200300012 STATUS (TABLE,,M.Williams,J,PRL,134,112701,2025) - Table I C305200300013 ENDBIB 11 0 C305200300014 COMMON 1 3 C305200300015 ERR-1 C305200300016 PER-CENT C305200300017 20.0 C305200300018 ENDCOMMON 3 0 C305200300019 DATA 6 1 C305200300020 EN-CM EN-RSL E DATA ERR-SYS ERR-S C305200300021 MEV MEV KEV MB MB MB C305200300022 9.91 0.05 407. 1.63 0.43 0.30C305200300023 ENDDATA 3 0 C305200300024 ENDSUBENT 23 0 C305200399999 SUBENT C3052004 20250326 20250711 C305200400001 BIB 4 8 C305200400002 REACTION (36-KR-86(A,N)38-SR-89,,SIG,G) C305200400003 ANALYSIS Cross sections were derived from the inverse C305200400004 kinematics measurement with 86Kr beam and 4He target. C305200400005 It is a sum of partial cross sections. C305200400006 ERR-ANALYS (DATA-ERR) The underlying measurements include staticalC305200400007 and systematic uncertainties. C305200400008 STATUS (DEP,C3052002) C305200400009 (TABLE,,M.Williams,J,PRL,134,112701,2025) - Table II C305200400010 ENDBIB 8 0 C305200400011 NOCOMMON 0 0 C305200400012 DATA 4 2 C305200400013 EN-CM EN-RSL DATA DATA-ERR C305200400014 MEV MEV MB MB C305200400015 9.05 0.04 1.70 0.48 C305200400016 10.39 0.06 23.0 0.41 C305200400017 ENDDATA 4 0 C305200400018 ENDSUBENT 17 0 C305200499999 ENDENTRY 4 0 C305299999999