ENTRY A0375 20160708 A085A037500000001 SUBENT A0375001 20160708 A085A037500100001 BIB 13 46 A037500100002 TITLE Direct measurement of the absolute cross section of A037500100003 P(7-BE,G)8-B. A037500100004 REFERENCE (J,NP/A,688,539,2001) A037500100005 #doi:10.1016/S0375-9474(01)00781-3 A037500100006 REL-REF (A,A0414002,F.Strieder+,J,NP/A,696,219,2001) A037500100007 AUTHOR (F.Terrasi, L.Gialanella, G.Imbriani, F.Strieder, A037500100008 L.Campajola, A.D'Onofrio, U.Greife, G.Gyurky, A037500100009 C.Lubritto, A.Ordine, V.Roca, C.Rolfs, M.Romano, A037500100010 D.Rogalla, C.Sabbarese, E.Somorjai, H.P.Trautvetter) A037500100011 INSTITUTE (2ITYFSN) Dipartimenio di scienze ambisntali A037500100012 (2ITYNAP) Dipartimento di scieaze fisiche A037500100013 (2ITYITY) Osservatorio astronomico di Capodimonte, A037500100014 Napoli A037500100015 (2GERBOC) Institut fuer physik mit ionenstrahlen A037500100016 (1USACSM) A037500100017 (3HUNDEB) A037500100018 COMMENT -Abstract. A new direct measurement of the absolute A037500100019 cross section of the 1-H(7-BE,G)8-B reaction has been A037500100020 performed in inverse kinematics at Ecm = 99O KeV. A A037500100021 radioactive 7-Be beam, E/Lab = 8 MeV, and a windowless A037500100022 hydrogen gas target were used; 8-B recoils were A037500100023 identified and counted by a recoil mass separator. TheA037500100024 reaction cross section was derived by normalization to A037500100025 the elastic scattering cross section, measured in a A037500100026 separate run. The resulting value cross section = A037500100027 0.40+/-0.12 Micro-B yielded an astrophysical S-factor A037500100028 at zero energy S(0) = 15.3+ -4.5 eV*B, in fair A037500100029 agreement, with recommended values. A037500100030 SAMPLE Hydrogen gas target with an effective length=376+/-8 A037500100031 millimeters. A037500100032 MONITOR (18-AR-0(3-LI-7,EL)18-AR-0,,DA) A037500100033 FACILITY (VDGT,2ITYNAP) 3 mega-volts tandem A037500100034 (FRS,2ITYNAP) A037500100035 METHOD (EXTB) 4+ charge state of 7-Be and an average intensityA037500100036 of 30 piko-ampere. A037500100037 (SITA) A037500100038 (MOMIX) A037500100039 ERR-ANALYS (ERR-T) The uncertainties are given in data table and A037500100040 in original text. A037500100041 (EN-ERR) Uncertainty of effective beam energy at the A037500100042 center of the gas target. A037500100043 STATUS (TABLE) From G. Imbriani A037500100044 HISTORY (20020706C) A037500100045 (20020628R) A037500100046 (20021217U) Last checking has been done. A037500100047 (20160708A) Major revision was done in Sub 004. A037500100048 ENDBIB 46 0 A037500100049 COMMON 1 3 A037500100050 EN-ERR A037500100051 KEV A037500100052 4. A037500100053 ENDCOMMON 3 0 A037500100054 ENDSUBENT 53 0 A037500199999 SUBENT A0375002 20021217 0000A037500200001 BIB 3 5 A037500200002 REACTION (1-H-1(3-LI-7,EL)1-H-1,,DA,P,RTH) A037500200003 MISC-COL (MISC) The sum of kinetic energies of beam and target A037500200004 particles in C.-M. System A037500200005 DETECTOR (SIBAR) Four collimated detector placed at 30, +45, A037500200006 -45 and 60 degree with respect to the beam axis A037500200007 ENDBIB 5 0 A037500200008 COMMON 2 3 A037500200009 EN ERR-T A037500200010 KEV NO-DIM A037500200011 7800. 0.03 A037500200012 ENDCOMMON 3 0 A037500200013 DATA 3 3 A037500200014 ANG-CM DATA MISC A037500200015 ADEG NO-DIM KEV A037500200016 60. 2.45 975. A037500200017 90. 1.31 A037500200018 120. 1.01 A037500200019 ENDDATA 5 0 A037500200020 ENDSUBENT 19 0 A037500299999 SUBENT A0375003 20021217 0000A037500300001 BIB 3 5 A037500300002 REACTION (1-H-1(4-BE-7,EL)1-H-1,,DA,P,RTH) A037500300003 MISC-COL (MISC) The sum of kinetic energies of beam and target A037500300004 particles in C.-M. System A037500300005 DETECTOR (SIBAR) Four collimated detector placed at 30, +45, A037500300006 -45 and 60 degree with respect to the beam axis A037500300007 ENDBIB 5 0 A037500300008 COMMON 1 3 A037500300009 EN A037500300010 KEV A037500300011 7632. A037500300012 ENDCOMMON 3 0 A037500300013 DATA 4 3 A037500300014 ANG-CM DATA ERR-T MISC A037500300015 ADEG NO-DIM NO-DIM KEV A037500300016 60. 0.81 0.12 954. A037500300017 90. 1.01 0.09 A037500300018 120. 1.42 0.11 A037500300019 ENDDATA 5 0 A037500300020 ENDSUBENT 19 0 A037500399999 SUBENT A0375004 20160708 A085A037500400001 BIB 5 8 A037500400002 REACTION R((1-H-1(4-BE-7,G)5-B-8,,SIG)=(4-BE-7(P,G)5-B-8,,SIG)) A037500400003 S((1-H-1(4-BE-7,G)5-B-8,,SIG,,SFC)= A037500400004 (4-BE-7(P,G)5-B-8,,SIG,,SFC)) A037500400005 PART-DET (5-B-8) A037500400006 STATUS (DEP,A0375003) A037500400007 COMMENT - By compiler: statistical error is main source of A037500400008 datum uncertainty. A037500400009 HISTORY (20160708A) EN was replaced by EN-CM, MISC was deleted.A037500400010 ENDBIB 8 0 A037500400011 NOCOMMON 0 0 A037500400012 DATA 5 1 A037500400013 EN-CM DATA RERR-T RDATA SERR-T S A037500400014 KEV MICRO-B MICRO-B B*EV B*EV A037500400015 990. 0.4 0.12 16.5 4.8 A037500400016 ENDDATA 3 0 A037500400017 ENDSUBENT 16 0 A037500499999 ENDENTRY 4 0 A037599999999