ENTRY 23312 20210609 23022331200000001 SUBENT 23312001 20210609 23022331200100001 BIB 16 72 2331200100002 TITLE 7Be(n,a)4He reaction and the cosmological lithium 2331200100003 problem: Measurement of the cross section in a wide 2331200100004 energy range at nTOF at CERN 2331200100005 AUTHOR (M.Barbagallo, A.Musumarra, L.Cosentino, E.Maugeri, 2331200100006 S.Heinitz, A.Mengoni, R.Dressler, D.Schumann, 2331200100007 F.Kaeppeler, N.Colonna, P.Finocchiaro, M.Ayranov, 2331200100008 L.Damone, N.Kivel, O.Aberle, S.Altstadt, 2331200100009 J.Andrzejewski, L.Audouin, M.Bacak, J.Balibrea-Correa,2331200100010 S.Barros, V.Becares, F.Becvar, C.Beinrucker, 2331200100011 E.Berthoumieux, J.Billowes, D.Bosnar, M.Brugger, 2331200100012 M.Caamano, M.Calviani, F.Calvino, D.Cano-Ott, 2331200100013 R.Cardella, A.Casanovas, D.M.Castelluccio, F.Cerutti, 2331200100014 Y.H.Chen, E.Chiaveri, G.Cortes, M.A.Cortes-Giraldo, 2331200100015 S.Cristallo, M.Diakaki, C.Domingo-Pardo, E.Dupont, 2331200100016 I.Duran, B.Fernandez-Dominguez, A.Ferrari, P.Ferreira,2331200100017 W.Furman, S.Ganesan, A.Garcia-Rios, A.Gawlik, 2331200100018 T.Glodariu, K.Goebel, I.F.Goncalves, 2331200100019 E.Gonzalez-Romero, E.Griesmayer, C.Guerrero, 2331200100020 F.Gunsing, H.Harada, T.Heftrich, J.Heyse, D.G.Jenkins,2331200100021 E.Jericha, T.Katabuchi, P.Kavrigin, A.Kimura, 2331200100022 M.Kokkoris, M.Krticka, E.Leal-Cidoncha, J.Lerendegui, 2331200100023 C.Lederer, H.Leeb, S.Lo Meo, S.J.Lonsdale, R.Losito, 2331200100024 D.Macina, J.Marganiec, T.Martinez, C.Massimi, 2331200100025 P.Mastinu, M.Mastromarco, A.Mazzone, E.Mendoza, 2331200100026 P.M.Milazzo, F.Mingrone, M.Mirea, S.Montesano, 2331200100027 R.Nolte, A.Oprea, A.Pappalardo, N.Patronis, A.Pavlik, 2331200100028 J.Perkowski, M.Piscopo, A.Plompen, I.Porras, J.Praena,2331200100029 J.Quesada, K.Rajeev, T.Rauscher, R.Reifarth, 2331200100030 A.Riego-Perez, P.Rout, C.Rubbia, J.Ryan, 2331200100031 M.Sabate-Gilarte, A.Saxena, P.Schillebeeckx, 2331200100032 S.Schmidt, P.Sedyshev, A.G.Smith, A.Stamatopoulos, 2331200100033 G.Tagliente, J.L.Tain, A.Tarifeno-Saldivia, 2331200100034 L.Tassan-Got, A.Tsinganis, S.Valenta, G.Vannini, 2331200100035 V.Variale, P.Vaz, A.Ventura, V.Vlachoudis, R.Vlastou, 2331200100036 J.Vollaire, A.Wallner, S.Warren, M.Weigand, C.Weiss, 2331200100037 C.Wolf, P.J.Woods, T.Wright, P.Zugec) 2331200100038 INSTITUTE (2ITYBAU,2ITYCAT,2ITYLNS,2SWTPSI,2ITYBOL,2GERKFK, 2331200100039 2ZZZEC ,2ZZZCER,2GERFRK,3POLLOU,2FR PAR,2AUSATI, 2331200100040 2SPNPCM,2PRTLFE,3CZRCHU,2FR SAC,2UK MAN,3CROZAG, 2331200100041 2SPNSAU,2SPNUPC,2SPNSEU,2ITYOAC,2GRCTUA,2SPNVAL, 2331200100042 4ZZZDUB,3INDTRM,3RUMBUC,2JPNJAE,2ZZZGEL,2UK YRK, 2331200100043 2JPNTIT,2UK EDG,2ITYUBO,2ITYPAD,2ITYTRI,2GERPTB, 2331200100044 2GRCIOA,2AUSVIE,2SPNGRU,2UK HFS,2SWTBAS,3AULCBR) 2331200100045 (2ITYITY) Istituto di Cristallografia, CNR, Bari 2331200100046 REFERENCE (J,PRL,117,152701,2016) 2331200100047 REL-REF (I,,L.Cosentino+,J,NIM/A,830,197,2016) 2331200100048 Details of experiment set up 2331200100049 EXP-YEAR (2015) 2331200100050 FACILITY (SYNCH,2ZZZCER) CERN nTOF facility (EAR2 area) 2331200100051 INC-SOURCE (SPALL) 2331200100052 SAMPLE Two 7Be samples (3 cm diam., ~18 GBq, ~1.4 ug of 7Be 2331200100053 for each) prepared by electrodeposition on a Al foil 2331200100054 (5 um thick) or droplet deposition on low-density 2331200100055 polyethylene foil (0.6 um thick). 2331200100056 DETECTOR (SI) Two Si detectors (3x3 cm2 area, 140 um thick) 2331200100057 which sandwiched the 7Be sample. 2331200100058 Low-energy (<1.5 MeV each) emitted from ground and 2331200100059 first excited states of 7Be could not be detected 2331200100060 due to enormous gamma-ray background of the sample. 2331200100061 METHOD (TOF) Flight path of 19 m 2331200100062 (COINC) Two alphas measured in coincidence 2331200100063 MONITOR (3-LI-6(N,T)2-HE-4,,SIG) 2331200100064 Data normalized to the flux measured with the Si 2331200100065 detector (SiMon2) both in shape and absolute value. 2331200100066 MONIT-REF (,,3,ENDF/B-VII.1,,2011) 2331200100067 CORRECTION Corrected for the beam interception factor 70+/-3% 2331200100068 because the samples are smaller than the neutron beam 2331200100069 spatial profile 2331200100070 STATUS (APRVD) Proof-read by Massimo Barbagallo (2016-11-08) 2331200100071 HISTORY (20161018R) On. Received from M.Barbagallo via E.Dupont2331200100072 (20161107C) On 2331200100073 (20210609U) On+ED. MONITOR and MONIT-REF added. 2331200100074 ENDBIB 72 0 2331200100075 NOCOMMON 0 0 2331200100076 ENDSUBENT 75 0 2331200199999 SUBENT 23312002 20161107 22562331200200001 BIB 4 8 2331200200002 REACTION (4-BE-7(N,G)4-BE-8,PAR,SIG) 2331200200003 PART-DET (A) Two alphas measured in coincidence 2331200200004 ERR-ANALYS (ERR-S) Statistical uncertainty 2331200200005 (ERR-SYS) Systematic uncertainty (12%) 2331200200006 (ERR-1) Sample mass (10%) 2331200200007 (ERR-2) Detection efficiency (4%) 2331200200008 (ERR-3) Beam interception factor (5%) 2331200200009 STATUS (TABLE) Fig.3 of Phys.Rev.Lett.117(2016)152701 2331200200010 ENDBIB 8 0 2331200200011 COMMON 6 3 2331200200012 E-LVL E-LVL ERR-SYS ERR-1 ERR-2 ERR-3 2331200200013 MEV MEV PER-CENT PER-CENT PER-CENT PER-CENT 2331200200014 16.626 16.922 12. 10. 4. 5. 2331200200015 ENDCOMMON 3 0 2331200200016 DATA 3 27 2331200200017 EN DATA ERR-S 2331200200018 EV B B 2331200200019 0.0129245 0.17808 0.0113425 2331200200020 0.0204839 0.142483 0.00698294 2331200200021 0.0324648 0.123676 0.00501709 2331200200022 0.0514532 0.0969753 0.00386603 2331200200023 0.0815479 0.0822743 0.00383196 2331200200024 0.129245 0.0611096 0.00437078 2331200200025 0.204839 0.0560179 0.00561986 2331200200026 0.324648 0.0312309 0.00436548 2331200200027 0.514532 0.0289459 0.00425005 2331200200028 0.815479 0.0217241 0.00369566 2331200200029 1.29245 0.0189447 0.00352065 2331200200030 2.04839 0.021943 0.00382969 2331200200031 3.24648 0.0161791 0.00323233 2331200200032 5.14532 0.0102902 0.00254939 2331200200033 8.15479 0.00574 0.00184372 2331200200034 12.9245 0.00699916 0.00205965 2331200200035 20.4839 0.00475418 0.0016308 2331200200036 32.4648 0.00262786 0.00107652 2331200200037 51.4532 0.006399 0.00188349 2331200200038 81.5479 0.00186931 0.000950542 2331200200039 129.245 0.00392097 0.00142441 2331200200040 204.839 0.00232291 0.00116204 2331200200041 324.648 0.00178571 0.00104669 2331200200042 514.532 0.00102747 0.000729802 2331200200043 1292.45 0.0008142630.000579563 2331200200044 8154.79 0.0004200140.000420014 2331200200045 12924.5 0.0004316650.000431665 2331200200046 ENDDATA 29 0 2331200200047 ENDSUBENT 46 0 2331200299999 ENDENTRY 2 0 2331299999999