ENTRY 14262 20100126 13611426200000001 SUBENT 14262001 20100126 13611426200100001 BIB 12 38 1426200100002 TITLE Experimental study of the 11,12B(n,gamma) reactions 1426200100003 and their influence on r-process nucleosynthesis of 1426200100004 light elements 1426200100005 AUTHOR (H.Y.Lee,J.P.Greene,C.L.Jiang,R.C.Pardo,K.E.Rehm, 1426200100006 J.P.Schiffer,A.H.Wuosmaa,N.J.Goodman,J.C.Lighthall, 1426200100007 S.T.Marley,K.Otsuki,N.Patel,M.Beard,M.Notani,X.D.Tang) 1426200100008 INSTITUTE (1USAANL,1USAWMU,2GERGSI,1USACSM,1USANOT) 1426200100009 REFERENCE (J,PR/C,81,015802,2010) 1426200100010 FACILITY (LINAC,1USAANL) The measurement was performed using 1426200100011 the ATLAS facility at Argonne National Laboratory. 1426200100012 SAMPLE CD2 target with thickness of 150 mu-g/cm2 1426200100013 DETECTOR (SISD) Three annular double-sided silicon strip 1426200100014 detectors were used for the detection of the protons 1426200100015 at backward angles between 110deg and 161deg in the 1426200100016 laboratory system.The DSSDs with thicknesses of 1426200100017 500 mu-m each, were segmented into 16 annular rings on 1426200100018 the front and 16 azimuthal wedges on the back. 1426200100019 (TELES,SIBAR,SIBAR)The recoiling B ions (11,12,13B) 1426200100020 were detected in a telescope of dE-E silicon 1426200100021 detectors segmented into four quadrants covering the 1426200100022 forward angle range of 1.3deg to 7.2deg in the 1426200100023 laboratory system. The forward telescope detector 1426200100024 consisted of a 75 mu-m thick dE detector and 1426200100025 a 1000 mu-m E detector. 1426200100026 METHOD (EDE,COINC) Coincidence between forward and backward 1426200100027 detectors was required 1426200100028 INC-SOURCE 12B beam was produced using the in-flight method via 1426200100029 the (d,p) reaction, by bombarding a deuterium gas cell 1426200100030 with an 81-MeV primary 11B beam with an intensity of 1426200100031 approximately 100 pnA. The resulting 12B beam had an 1426200100032 energy of 75 MeV. 1426200100033 ANALYSIS From charged particle reactions the branching ratio of 1426200100034 the neutron-unbound state at Eex=3.389MeV was measured.1426200100035 From this, ratio of partial widths Gn/Gg and reaction 1426200100036 rates for 11,12B(n,g) were obtained. 1426200100037 COMMENT Charged particle induced reaction data compiled in 1426200100038 entry C1756 1426200100039 HISTORY (20100126C) Compiled by S.H. 1426200100040 ENDBIB 38 0 1426200100041 NOCOMMON 0 0 1426200100042 ENDSUBENT 41 0 1426200199999 SUBENT 14262002 20100126 13611426200200001 BIB 2 10 1426200200002 REACTION ((5-B-11(N,EL),,WID,,,DERIV)/ 1426200200003 (5-B-11(N,G),,WID,,,DERIV)) 1426200200004 STATUS (TABLE) Data taken from text, p.4 of the reference 1426200200005 (DEP,C1756002) 1426200200006 (DEP,C1756003) 1426200200007 (DEP,C1756004) 1426200200008 (DEP,C1756005) 1426200200009 (DEP,C1756006) 1426200200010 (DEP,C1756007) 1426200200011 (DEP,C1756008) 1426200200012 ENDBIB 10 0 1426200200013 COMMON 1 3 1426200200014 EN-RES 1426200200015 KEV 1426200200016 21. 1426200200017 ENDCOMMON 3 0 1426200200018 DATA 2 1 1426200200019 DATA DATA-ERR 1426200200020 NO-DIM NO-DIM 1426200200021 94.0 5.0 1426200200022 ENDDATA 3 0 1426200200023 ENDSUBENT 22 0 1426200299999 SUBENT 14262003 20100126 13611426200300001 BIB 3 6 1426200300002 REACTION (5-B-11(N,G)5-B-12,,SGV,,,DERIV) 1426200300003 STATUS (TABLE) Data presented in fig. 5 of the reference 1426200300004 sent by author (H.Y.L.) 1426200300005 (DEP,14262002) 1426200300006 ANALYSIS Reaction rate determined from resonance properties 1426200300007 measured in this work. 1426200300008 ENDBIB 6 0 1426200300009 NOCOMMON 0 0 1426200300010 DATA 4 26 1426200300011 KT DATA DATA-MIN DATA-MAX 1426200300012 K9 CM3/S/MOL CM3/S/MOL CM3/S/MOL 1426200300013 0.058 5.334E+03 7.705E+03 1426200300014 0.073 8.511E+03 1.229E+04 1426200300015 0.087 1.117E+04 1.613E+04 1426200300016 0.102 1.313E+04 1.897E+04 1426200300017 0.116 1.445E+04 2.088E+04 1426200300018 0.131 1.527E+04 1.866E+04 2.206E+04 1426200300019 0.145 1.570E+04 1.919E+04 2.267E+04 1426200300020 0.160 1.585E+04 1.937E+04 2.289E+04 1426200300021 0.174 1.580E+04 1.931E+04 2.282E+04 1426200300022 0.232 1.459E+04 1.784E+04 2.108E+04 1426200300023 0.290 1.294E+04 1.581E+04 1.868E+04 1426200300024 0.348 1.137E+04 1.390E+04 1.643E+04 1426200300025 0.406 1.003E+04 1.226E+04 1.449E+04 1426200300026 0.464 8.900E+03 1.088E+04 1.286E+04 1426200300027 0.522 7.957E+03 9.725E+03 1.149E+04 1426200300028 0.580 7.168E+03 8.761E+03 1.035E+04 1426200300029 0.638 6.507E+03 7.953E+03 9.399E+03 1426200300030 0.696 5.950E+03 7.272E+03 8.595E+03 1426200300031 0.754 5.479E+03 6.697E+03 7.914E+03 1426200300032 0.812 5.079E+03 6.208E+03 7.336E+03 1426200300033 0.870 4.738E+03 5.791E+03 6.844E+03 1426200300034 0.928 4.447E+03 5.435E+03 6.424E+03 1426200300035 0.986 4.197E+03 5.130E+03 6.063E+03 1426200300036 1.044 3.982E+03 4.867E+03 5.752E+03 1426200300037 1.102 3.797E+03 4.640E+03 5.484E+03 1426200300038 1.160 3.636E+03 4.443E+03 5.251E+03 1426200300039 ENDDATA 28 0 1426200300040 ENDSUBENT 39 0 1426200399999 SUBENT 14262004 20100126 13611426200400001 BIB 3 6 1426200400002 REACTION (5-B-12(N,G)5-B-13,,SGV,,,DERIV) 1426200400003 STATUS (TABLE) Data presented in fig. 6 of the main reference 1426200400004 sent by author (H.Y.L.) 1426200400005 (DEP,14262002) 1426200400006 ANALYSIS Reaction rate determined from resonance properties 1426200400007 measured in this work. 1426200400008 ENDBIB 6 0 1426200400009 NOCOMMON 0 0 1426200400010 DATA 4 35 1426200400011 KT DATA DATA-MIN DATA-MAX 1426200400012 K9 CM3/S/MOL CM3/S/MOL CM3/S/MOL 1426200400013 0.058 2.392E+03 1.700E+02 3.110E+03 1426200400014 0.116 2.392E+03 5.315E+02 3.110E+03 1426200400015 0.174 2.400E+03 7.205E+02 3.120E+03 1426200400016 0.232 2.452E+03 8.624E+02 3.187E+03 1426200400017 0.290 2.579E+03 1.039E+03 3.352E+03 1426200400018 0.348 2.780E+03 1.270E+03 3.614E+03 1426200400019 0.406 3.034E+03 1.542E+03 3.944E+03 1426200400020 0.464 3.315E+03 1.835E+03 4.310E+03 1426200400021 0.522 3.602E+03 2.130E+03 4.683E+03 1426200400022 0.580 3.880E+03 2.412E+03 5.043E+03 1426200400023 0.638 4.138E+03 2.674E+03 5.380E+03 1426200400024 0.696 4.373E+03 2.910E+03 5.685E+03 1426200400025 0.754 4.581E+03 3.120E+03 5.956E+03 1426200400026 0.812 4.764E+03 3.302E+03 6.193E+03 1426200400027 0.870 4.921E+03 3.460E+03 6.397E+03 1426200400028 0.928 5.054E+03 3.594E+03 6.571E+03 1426200400029 0.986 5.167E+03 3.707E+03 6.717E+03 1426200400030 1.044 5.261E+03 3.800E+03 6.839E+03 1426200400031 1.102 5.337E+03 3.877E+03 6.939E+03 1426200400032 1.160 5.399E+03 3.939E+03 7.019E+03 1426200400033 1.250 4.010E+03 1426200400034 1.500 4.088E+03 1426200400035 1.750 4.057E+03 1426200400036 2.000 3.968E+03 1426200400037 2.500 3.721E+03 1426200400038 3.000 3.458E+03 1426200400039 3.500 3.212E+03 1426200400040 4.000 2.994E+03 1426200400041 4.500 2.802E+03 1426200400042 5.000 2.635E+03 1426200400043 6.000 2.362E+03 1426200400044 7.000 2.152E+03 1426200400045 8.000 1.987E+03 1426200400046 9.000 1.855E+03 1426200400047 10.000 1.749E+03 1426200400048 ENDDATA 37 0 1426200400049 ENDSUBENT 48 0 1426200499999 ENDENTRY 4 0 1426299999999