ENTRY C3087 20251002 C308700000001 SUBENT C3087001 20251002 20260228 C308700100001 BIB 12 55 C308700100002 TITLE Breakup of the proton halo nucleus 8B at a C308700100003 sub-Coulomb energy C308700100004 AUTHOR (K.Palli,A.Pakou,A.M.Moro,P.D.O'Malley,L.Acosta, C308700100005 A.M.Sanchez-Benitez,G.Souliotis,E.F.Aguilera, C308700100006 E.Andrade,D.Godos,O.Sgouros,V.Soukeras,C.Agodi, C308700100007 T.L.Bailey,D.W.Bardayan,C.Boomershine,M.Brodeur, C308700100008 F.Cappuzzello,S.Carmichael,M.Cavallaro,S.Dede, C308700100009 J.A.Duenas,J.Henning,K.Lee,W.S.Porter,F.Rivero, C308700100010 W.von Seeger) C308700100011 REFERENCE (J,PR/C,111,024615,2025) C308700100012 #doi:10.1103/PhysRevC.111.024615 C308700100013 (J,PR/C,111,049902,2025) Erratum. C308700100014 #doi:10.1103/PhysRevC.111.049902 C308700100015 REL-REF (O,C3081001,K.Palli+,J,PR/C,109,064614,2024) Elastic C308700100016 scattering data. C308700100017 INSTITUTE (2GRCIOA,2GRCTUA,1USANOT,3MEXUMX,2SPNIEM,2SPNHLV, C308700100018 2SPNSEU,3MEXINI,2ITYCAT,1USATAM) C308700100019 FACILITY (VDGT,1USANOT) UND FN tandem, the radioactive beam C308700100020 facility of the University of Notre Dame. C308700100021 INC-SPECT The secondary 8B beam was produced in-flight, as part C308700100022 of a cocktail beam together with 7Be and 7Li. The C308700100023 reaction used was 3He+6Li with the two proton C308700100024 transfer channel 3He(6Li,n)8B, leading to 8B. A C308700100025 primary bunched beam of 6Li was accelerated at 37 MeV C308700100026 by the UND FN tandem, and impinged on a 2.5 cm long C308700100027 gas target of 3He at a pressure of 850 Torr. In the C308700100028 middle of the target, the beam energies corresponded C308700100029 to 26.5 MeV, 19.2 MeV, and 14.3 MeV for 8B, 7Be, C308700100030 and 7Li, respectively. C308700100031 DETECTOR (SISD,TELES) The reaction products, including C308700100032 elastically scattered particles, were detected in C308700100033 four two-stage dE-E telescopes. Each of these C308700100034 consisted of a double-sided silicon strip detector C308700100035 (DSSSD) and a pad silicon detector. C308700100036 SAMPLE A natZr target of 1.95 mg/cm2 thickness. C308700100037 METHOD (EDE,TOF) The elastically scattered 8B nuclei were C308700100038 very well separated from the other beam products with C308700100039 the dE-E technique. For the breakup measurement, an C308700100040 unambiguous separation has to be obtained between the C308700100041 7Be fragments resulting from 8B breakup and the 7Be C308700100042 contamination in the secondary beam, elastically C308700100043 scattered by the natZr target. This was achieved for C308700100044 a very small part of the data with a time-of-flight C308700100045 (TOF) technique which was imposed between the start C308700100046 of the DSSSD detectors and the radio frequency of the C308700100047 pulsed beam. For the rest of the data the separation C308700100048 was obtained by energy. For that energy thresholds C308700100049 for a pure 7Be fragment detection were obtained, C308700100050 through comparison of energy distributions of the C308700100051 elastic scattered 7Be secondary beam and of the 7Be C308700100052 fragments, the last obtained in a CDCC calculation. C308700100053 Finally recovery ratios were applied for the missing C308700100054 events. C308700100055 STATUS (APRVD) Approved by A.Pakou on October 5, 2025. C308700100056 HISTORY (20251002C) BP C308700100057 ENDBIB 55 0 C308700100058 COMMON 1 3 C308700100059 EN C308700100060 MEV C308700100061 26.5 C308700100062 ENDCOMMON 3 0 C308700100063 ENDSUBENT 62 0 C308700199999 SUBENT C3087002 20251002 20260228 C308700200001 BIB 4 15 C308700200002 REACTION (40-ZR-90(5-B-8,X)4-BE-7,,DA) C308700200003 ADD-RES CDCC calculations have been performed assuming a C308700200004 three-body model for the reaction (7Be+p+90Zr). It C308700200005 should be noted that a natural target was employed; C308700200006 however, authors may anticipate that this does not C308700200007 impact the conclusions, as we do not expect a C308700200008 significant dependence of the breakup on the specific C308700200009 isotope. C308700200010 ERR-ANALYS (ERR-S) Error bars assigned to the data are only due C308700200011 to statistics. C308700200012 (ERR-1) The recovery ratio applied in the measured C308700200013 breakup yield. C308700200014 (ERR-2) Continuum states in 8B. C308700200015 STATUS (TABLE,,K.Palli+,J,PR/C,111,024615,2025) Fig. - 4a C308700200016 Data were provided by A.Pakou on October 2, 2025. C308700200017 ENDBIB 15 0 C308700200018 COMMON 2 3 C308700200019 ERR-1 ERR-2 C308700200020 PER-CENT PER-CENT C308700200021 20.0 1.0 C308700200022 ENDCOMMON 3 0 C308700200023 DATA 3 10 C308700200024 ANG DATA ERR-S C308700200025 ADEG MB/SR MB/SR C308700200026 22.879 58.2311 10.4124 C308700200027 25.592 55.1821 9.9291 C308700200028 29.8075 39.2405 6.3222 C308700200029 34.14 33.8084 7.6191 C308700200030 37.085 29.5001 7.5082 C308700200031 40.053 28.0731 7.7864 C308700200032 43.04 29.6387 8.3960 C308700200033 48.953 25.5157 7.8257 C308700200034 51.859 21.4906 7.8363 C308700200035 54.713 21.2098 8.7989 C308700200036 ENDDATA 12 0 C308700200037 ENDSUBENT 36 0 C308700299999 SUBENT C3087003 20251002 20260228 C308700300001 BIB 4 8 C308700300002 REACTION (40-ZR-90(5-B-8,X)4-BE-7,,SIG) C308700300003 ANALYSIS (INTAD) The integrated breakup cross section. This C308700300004 result was obtained by integrating the experimental C308700300005 angular distribution, but assuming the same shape as C308700300006 in the CDCC calculation for all missing angles. C308700300007 ERR-ANALYS (DATA-ERR) No details on sources of uncertainties. C308700300008 STATUS (DEP,C3087002) C308700300009 (TABLE,,K.Palli+,J,PR/C,111,024615,2025) Page -024615-6C308700300010 ENDBIB 8 0 C308700300011 NOCOMMON 0 0 C308700300012 DATA 2 1 C308700300013 DATA DATA-ERR C308700300014 MB MB C308700300015 170.0 40.0 C308700300016 ENDDATA 3 0 C308700300017 ENDSUBENT 16 0 C308700399999 ENDENTRY 3 0 C308799999999