ENTRY O1973 20200226 O076O197300000001 SUBENT O1973001 20200226 O076O197300100001 BIB 12 43 O197300100002 TITLE New measurement of the B-11(p,alpha)Be-8 bare-nucleus O197300100003 S(E) factor via the Trojan horse method. O197300100004 AUTHOR (L.Lamia, C.Spitaleri, V.Burjan, N.Carlin, S.Cherubini,O197300100005 V.Crucilla, M.Gameiro Munhoz, M.Gimenez Del Santo, O197300100006 M.Gulino, Z.Hons, G.G.Kiss, V.Kroha, S.Kubono, O197300100007 M.La Cognata, C.Li, J.Mrazek, A.Mukhamedzhanov, O197300100008 R.G.Pizzone, S.M.R.Puglia, Q.Wen, G.G.Rapisarda, O197300100009 C.Rolfs, S.Romano, M.L.Sergi, E.Somorjai, F.A.Souza, O197300100010 A.Szanto de Toledo, G.Tabacaru, A.Tumino, O197300100011 Y.Wakabayashi, H.Yamaguchi, S.-H.Zhou) O197300100012 INSTITUTE (2ITYLNS,2ITYCAT,3CZRUJV,3BZLUSP,3HUNDEB,2JPNTOK, O197300100013 3CPRAEP,1USATAM,2GERBOC,3BZLIPE) O197300100014 REFERENCE (J,JP/G,39,015106,2012) revised data for S(E) O197300100015 (S,AIP-1120,171,2009) prelim. data O197300100016 (J,NP/A,834,655C,2010) prelim. data (same data as in O197300100017 prev. ref.) O197300100018 COMMENT *By authors*.In this paper, a new indirect study of theO197300100019 11B(p,a)8Be reaction has been reported. The O197300100020 astrophysical S(E) factor has been extracted from O197300100021 approx.600 keV down to zero energy by means of an O197300100022 improved data analysis technique and it has been O197300100023 compared with direct data available in the literature. O197300100024 The results obtained here support, within the O197300100025 experimental uncertainties, the low-energy S(E)-factor O197300100026 extrapolation and the value of the electron screening O197300100027 potential deduced from direct measurements. O197300100028 SAMPLE A self-supported 170-mug/cm**2 thick deuterated O197300100029 polyethylene target (CD2) was placed at 90 degree with O197300100030 respect to the beam direction. O197300100031 DETECTOR Detector system was modernized O197300100032 (TELES,PS,PS) O197300100033 The setup consisted of four dual position sensitive O197300100034 detectors (DPSD), made of two 50*10 mm**2 position O197300100035 sensitive silicon detectors (PSD) mounted one above theO197300100036 other and separated by an empty 1 mm space. They were O197300100037 dedicated to the coincident detection of the two alphasO197300100038 from the ground state of 8Be. O197300100039 FACILITY (VDGT,2ITYLNS) O197300100040 METHOD (EDE) O197300100041 ANALYSIS (TROJA) Reaction B-11(d,n+Be-8)2-He-4 was used. O197300100042 STATUS The letter was send to Dr.L.Lamia 06.03.2012. No reply O197300100043 HISTORY (20120307C) sb O197300100044 (20200226U) SD: Refs on prelim. data was added. O197300100045 ENDBIB 43 0 O197300100046 NOCOMMON 0 0 O197300100047 ENDSUBENT 46 0 O197300199999 SUBENT O1973002 20120310 O047O197300200001 BIB 5 11 O197300200002 REACTION (5-B-11(P,A)4-BE-8,,DA,,REL) O197300200003 COMMENT *By authors*.The angular distribution test was O197300200004 performed for each set of coincidence events spanning O197300200005 the full be-8-alpha relative energy range in steps O197300200006 of delta-E-cm=200-keV. The angular distributions were O197300200007 then normalized to the direct data of H.W.Becker+. O197300200008 See Rel-Ref. O197300200009 REL-REF (R,A0413001,H.W.Becker+,J,ZP/A,327,341,1987) O197300200010 ERR-ANALYS (ERR-S).Statistical errors. O197300200011 (EN-ERR).The uncertainty is reported on figure O197300200012 STATUS (CURVE).By CAJAD-fig.11 of J,JP/G,39,015106,2012 O197300200013 ENDBIB 11 0 O197300200014 COMMON 2 3 O197300200015 EN EN-ERR O197300200016 KEV KEV O197300200017 300. 50. O197300200018 ENDCOMMON 3 0 O197300200019 DATA 3 3 O197300200020 ANG-CM DATA-CM ERR-S O197300200021 ADEG ARB-UNITS ARB-UNITS O197300200022 56.92 8.745 2.421 O197300200023 65.32 9.601 2.304 O197300200024 74.03 9.090 2.265 O197300200025 ENDDATA 5 0 O197300200026 ENDSUBENT 25 0 O197300299999 SUBENT O1973003 20120310 O047O197300300001 BIB 4 8 O197300300002 REACTION (5-B-11(P,A)4-BE-8,,SIG,,SFC) O197300300003 Trojan horse method O197300300004 REL-REF (O,O1317004,C.Spitaleri+,J,PR/C,69,055806,2004) O197300300005 same data were reported O197300300006 STATUS (COREL,O1317004) Waiting explanation of relation from O197300300007 authors-Revised data or same O197300300008 (CURVE).By CAJAD-fig.13 of J,JP/G,39,015106,2012 O197300300009 ERR-ANALYS (ERR-S).Statistical errors. O197300300010 ENDBIB 8 0 O197300300011 NOCOMMON 0 0 O197300300012 DATA 3 32 O197300300013 EN-CM DATA ERR-S O197300300014 MEV B*MEV B*MEV O197300300015 0.01 2.147 0.320 O197300300016 0.03 1.861 0.249 O197300300017 0.05 3.197 0.367 O197300300018 0.07 3.869 0.403 O197300300019 0.09 5.039 0.391 O197300300020 0.11 6.280 0.485 O197300300021 0.13 8.848 0.616 O197300300022 0.15 9.059 0.604 O197300300023 0.17 8.547 0.616 O197300300024 0.19 6.342 0.497 O197300300025 0.21 5.215 0.498 O197300300026 0.23 2.797 0.367 O197300300027 0.25 1.860 0.284 O197300300028 0.27 1.561 0.272 O197300300029 0.29 1.748 0.296 O197300300030 0.31 1.640 0.320 O197300300031 0.33 1.614 0.332 O197300300032 0.35 1.410 0.296 O197300300033 0.37 1.420 0.273 O197300300034 0.39 1.382 0.284 O197300300035 0.41 1.545 0.320 O197300300036 0.43 1.508 0.332 O197300300037 0.45 1.624 0.343 O197300300038 0.47 1.586 0.320 O197300300039 0.49 1.572 0.355 O197300300040 0.51 1.534 0.367 O197300300041 0.53 1.437 0.343 O197300300042 0.55 1.388 0.332 O197300300043 0.57 1.267 0.308 O197300300044 0.59 1.253 0.343 O197300300045 0.61 1.227 0.355 O197300300046 0.63 1.390 0.391 O197300300047 ENDDATA 34 0 O197300300048 ENDSUBENT 47 0 O197300399999 ENDENTRY 3 0 O197399999999