ENTRY A0558 20040213 0000A055800000001 SUBENT A0558001 20040213 0000A055800100001 BIB 12 34 A055800100002 TITLE Cross section for C(alpha,x)11-C at 0.64 - 2.8 GeV. A055800100003 AUTHOR (J.R.Radin, H.Quechon, G.M.Raisbeck, F.Yiou) A055800100004 REFERENCE (J,PR/C,26,2565,1982) A055800100005 INSTITUTE (2FR CSN) Laboratoire Rene Bernas A055800100006 (2FR SAC) Centre d'Etudes Nucleaires A055800100007 FACILITY (SYNCH,2FR SAC) Saturne I A055800100008 METHOD (EXTB) A055800100009 (SITA) The targets were 3, 6, or 10 mm thick disks of A055800100010 NE102A or PILOT B scintillator plastics, 38 mm in A055800100011 diameter and polished on all sides. A055800100012 A carbon weight fraction of 0.9152 was used for both A055800100013 targets. A055800100014 (ACTIV) Exposures lasted from 5 upto 15 minutes, A055800100015 giving total integrated fluxes of 5.E+6 - 7.E+7 alpha A055800100016 particles. A055800100017 PART-DET (B+) A055800100018 DETECTOR (TELES,SCIN,SCIN,SCIN) To measure alpha beam intensity.A055800100019 Second scintillator was used as target. A055800100020 (SCIN) Irradiated scintillator from telescope. A055800100021 ERR-ANALYS (ERR-1) The average calculated error in the C-11 from A055800100022 decay fits. A055800100023 ANALYSIS (DECAY) The C-11 decay curves were fitted to two A055800100024 components, one having a half-life of 20.39 minutes, A055800100025 the other a constant background, which was measured forA055800100026 the targets several days after irradiation, when all A055800100027 the C-11 had decayed. A055800100028 HISTORY (20030806C) A055800100029 (20040213U) Last checking has been done. A055800100030 CORRECTION 1. Dead time correction; A055800100031 2. Deutron contamination; A055800100032 3. Neutron contamination; A055800100033 4. Secondary contamination. A055800100034 All details regarding to the corrections see in A055800100035 REFERENCE A055800100036 ENDBIB 34 0 A055800100037 COMMON 1 3 A055800100038 ERR-1 A055800100039 PER-CENT A055800100040 1. A055800100041 ENDCOMMON 3 0 A055800100042 ENDSUBENT 41 0 A055800199999 SUBENT A0558002 20040213 0000A055800200001 BIB 5 11 A055800200002 REACTION (6-C-0(A,X)6-C-11,,SIG) A055800200003 DECAY-DATA (6-C-11,20.39MIN,B+,,0.998) A055800200004 REL-REF (A,,J.W.GEAGA+,J,NP/A,386,589,1982) A055800200005 ERR-ANALYS (ERR-2) Random error. The error comes mainly from the A055800200006 counting statistics in determining the C-11 activity. A055800200007 (ERR-3) The systematic errors for each energy are 1.3% A055800200008 from neutron beam contamination, 3% from H-2 A055800200009 contamination, 1% from the secondary production, and 1%A055800200010 for the C-11 counting efficiency in the target. A055800200011 (ERR-T) It is the arithmetic sum of the ERR-2 and ERR-3A055800200012 MISC-COL (MISC) Number of measurements A055800200013 ENDBIB 11 0 A055800200014 COMMON 1 3 A055800200015 ERR-3 A055800200016 PER-CENT A055800200017 3.6 A055800200018 ENDCOMMON 3 0 A055800200019 DATA 5 4 A055800200020 EN DATA ERR-T ERR-2 MISC A055800200021 GEV MB MB PER-CENT NO-DIM A055800200022 0.64 55.6 2.2 0.3 10. A055800200023 1.2 49.2 1.9 0.3 11. A055800200024 2. 44.1 1.8 0.4 12. A055800200025 2.8 42. 1.7 0.4 9. A055800200026 ENDDATA 6 0 A055800200027 ENDSUBENT 26 0 A055800299999 ENDENTRY 2 0 A055899999999