ENTRY O2359 20171229 O064O235900000001 SUBENT O2359001 20171229 O064O235900100001 BIB 11 42 O235900100002 TITLE A new study of 10B(p,a)7Be reaction at low energies O235900100003 AUTHOR (A.Caciolli,R.Depalo,C.Broggini,M.La Cognata, O235900100004 L.Lamia,R.Menegazzo,L.Mou,S.M.R.Puglia,V.Rigato, O235900100005 S.Romano,C.Rossi Alvarez,M.L.Sergi,C.Spitaleri, O235900100006 A.Tumino) O235900100007 INSTITUTE (2ITYPAD,2ITYLNS,2ITYCAT) O235900100008 REFERENCE (J,EPJ/A,52,136,2016) O235900100009 #doi:10.1140/epja/i2016-16136-8 O235900100010 FACILITY (VDG,2ITYPAD) O235900100011 SAMPLE (5-B-10,ENR=0.93) Isotopically enriched 10B targets, O235900100012 evaporated on thin carbon backings. Targets with O235900100013 thicknesses of 25, 60, and 100 ug/cm2 were used. O235900100014 Target thickness and elemental composition were O235900100015 measured by using Rutherford backscattering and O235900100016 nuclear reaction analysis. O235900100017 DETECTOR (HPGE) Two HPGe detectors facing each other in O235900100018 coaxial geometry. The entire measurement setup was O235900100019 shielded by few cm of copper and 10 cm of lead. The O235900100020 irradiated targets were placed between the two O235900100021 detectors, 2.5 cm away from each detector surface. O235900100022 METHOD (ACTIV,EXTB,GSPEC,REC,SITA) The astrophysical S- O235900100023 factor of the 10B(p,a)7Be reaction was measured by O235900100024 activation for centre-of-mass energies 249-1182 keV. O235900100025 0.2 mm thick Al catcher foil was positioned around O235900100026 the target, covering 99.8% of the total solid angle, O235900100027 in order to catch the recoiling 7Be ions. After the O235900100028 irradiation the activity of the catcher foils and the O235900100029 targets was determined separately. The measurements O235900100030 were repeated for each sample several times in the O235900100031 three months following the experiment. O235900100032 ERR-ANALYS (ERR-1) charge integration (1%) O235900100033 (ERR-2,0.1,1.4) beam energy (0.1-1.4%) O235900100034 (ERR-3) target charaterisation (4%) O235900100035 (ERR-4) detector efficiency (2.9%) O235900100036 (ERR-5) angular distribution (2%) O235900100037 (ERR-6) 7Be backscattering (1%) O235900100038 (ERR-S) statistical uncertainty of the S-factor resultsO235900100039 ADD-RES (COMP) Results were compared to the data available O235900100040 from the literature. O235900100041 (THEO) R-matrix analysis of the new experimental data O235900100042 was performed. O235900100043 HISTORY (20171228C) MPT O235900100044 ENDBIB 42 0 O235900100045 COMMON 5 3 O235900100046 ERR-1 ERR-3 ERR-4 ERR-5 ERR-6 O235900100047 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT O235900100048 1. 4. 2.9 2. 1. O235900100049 ENDCOMMON 3 0 O235900100050 ENDSUBENT 49 0 O235900199999 SUBENT O2359002 20171229 O064O235900200001 BIB 3 3 O235900200002 REACTION (5-B-10(P,A)4-BE-7,,SIG,,SFC) O235900200003 DECAY-DATA (4-BE-7,53.22D,DG,478.,0.1044) O235900200004 STATUS (TABLE) From Table 1. O235900200005 ENDBIB 3 0 O235900200006 NOCOMMON 0 0 O235900200007 DATA 3 8 O235900200008 EN-CM DATA ERR-S O235900200009 KEV B*MEV B*MEV O235900200010 249. 19.96 0.16 O235900200011 347. 14.47 0.06 O235900200012 446. 12.72 0.07 O235900200013 548. 9.34 0.13 O235900200014 647. 13.33 0.07 O235900200015 749. 10.75 0.08 O235900200016 900. 16.61 0.13 O235900200017 1182. 20.77 0.09 O235900200018 ENDDATA 10 0 O235900200019 ENDSUBENT 18 0 O235900299999 ENDENTRY 2 0 O235999999999