ENTRY O2384 20220223 O088O238400000001 SUBENT O2384001 20220223 O088O238400100001 BIB 11 34 O238400100002 TITLE Proton resonant and direct capture on 28Si O238400100003 AUTHOR (F.Terrasi,A.Brondi,P.Cuzzocrea,R.Moro,M.Romano) O238400100004 INSTITUTE (2ITYNAP) O238400100005 REFERENCE (J,NP/A,324,1,1979) O238400100006 FACILITY (VDG,2ITYPAD) 2 MV Van de Graaff accelerator of the O238400100007 Laboratori Nazionali di Legnaro (Padua, and O238400100008 (VDGT,2ITYNAP) 3 MV Tandem of the University of Naples.O238400100009 SAMPLE (14-SI-28,ENR=0.998) Targets were prepared by vacuum O238400100010 evaporation onto tantalum backings of SiO2 enriched to O238400100011 99.8% in 28Si. Target thicknesses corresponding to O238400100012 5-15 keV for 1 .4 MeV protons were used. O238400100013 Enriched SiO2 on thin carbon backings was evaporated O238400100014 simultaneously with the targets used in the experimentsO238400100015 DETECTOR (GELI) two Ge(Li) detectors of volumes 70 and 75 cm3 O238400100016 respectively, both placed at 5 cm from the beam spot. O238400100017 Detailed angular distributions at 0., 30., 55. and O238400100018 90. degr. were measured at eight different proton O238400100019 energies by means of the 75 cm3 detector, with the O238400100020 70 cm3 detector used as a monitor. O238400100021 MONITOR ((MONIT)14-SI-28(P,G)15-P-29,PAR,DA) O238400100022 (8-O-16(P,G)9-F-17,PAR,DA) O238400100023 The average oxygen/silicon stoichiometric ratio of O238400100024 the target was determined as 1.24+-0.11. O238400100025 From this value and the measured yields at 55.degr. O238400100026 for the capture reactions on 160 and 28Si cr.sect. O238400100027 was obtained for the peak cross section at the Ep = O238400100028 1.65 MeV 28Si(p,gamma0) resonance, based on the cross O238400100029 section for the 16O(p,gamma1) reaction. O238400100030 MONIT-REF (C0175001,C.Rolfs,J,NP/A,217,29,1973) O238400100031 ERR-ANALYS (ERR-1) Uncertainty includes the statistical errors as O238400100032 well as the error in the reference value for O238400100033 16O(p,gamma1) reaction. O238400100034 HISTORY (20191223C) SD O238400100035 (20220223A) SD: Correction in Subent 002. O238400100036 ENDBIB 34 0 O238400100037 COMMON 5 3 O238400100038 EN-NRM E-LVL-NRM ANG-NRM MONIT ERR-1 O238400100039 MEV MEV ADEG MU-B/SR MU-B/SR O238400100040 1.65 0.0 55. 120. 18. O238400100041 ENDCOMMON 3 0 O238400100042 ENDSUBENT 41 0 O238400199999 SUBENT O2384002 20220223 O088O238400200001 BIB 5 7 O238400200002 REACTION (14-SI-28(P,G)15-P-29,PAR,DA) O238400200003 COMMENT From the article: The cross section scale is invalid O238400200004 for the resonance at Ep = 2.29 MeV, not much O238400200005 wider than the target thickness O238400200006 ERR-ANALYS (DATA-ERR) No information about source of uncertainty O238400200007 STATUS (CURVE) Figs 3,4 from Nucl.Phys.,A324(1979)1 O238400200008 HISTORY (20220223A) SD: Units E-LVL corrected (MEV -> KEV). O238400200009 ENDBIB 7 0 O238400200010 COMMON 2 3 O238400200011 EN-ERR-DIG ERR-DIG O238400200012 KEV PER-CENT O238400200013 0.8 0.7 O238400200014 ENDCOMMON 3 0 O238400200015 DATA 5 119 O238400200016 E-LVL ANG EN DATA DATA-ERR O238400200017 KEV ADEG KEV MU-B/SR MU-B/SR O238400200018 0. 0. 1361.2 1.862E-02 8.912E-03 O238400200019 0. 0. 1391.5 1.593E-02 7.830E-03 O238400200020 0. 0. 1420.7 2.086E-02 7.913E-03 O238400200021 0. 0. 1451.8 4.111E-02 5.725E-03 O238400200022 0. 0. 1482.1 4.041E-02 6.436E-03 O238400200023 0. 0. 1511.3 7.301E-02 7.325E-03 O238400200024 0. 0. 1542.5 1.274E-01 1.037E-02 O238400200025 0. 0. 1571.7 2.860E-01 7.559E-02 O238400200026 0. 0. 1631.9 2.514E+00 6.474E-02 O238400200027 0. 0. 1666.8 4.703E+00 1.608E-01 O238400200028 0. 0. 1725.6 8.273E-01 2.186E-02 O238400200029 0. 0. 1782.5 3.323E-01 2.393E-02 O238400200030 0. 0. 1812.8 2.584E-01 1.621E-02 O238400200031 0. 0. 1843.1 2.230E-01 2.024E-02 O238400200032 0. 0. 1872.4 1.958E-01 1.593E-02 O238400200033 0. 0. 1903.6 1.976E-01 1.608E-02 O238400200034 0. 0. 1932.9 1.690E-01 1.858E-02 O238400200035 0. 0. 1963.2 1.766E-01 2.112E-02 O238400200036 0. 0. 1995.3 2.083E-01 1.892E-02 O238400200037 0. 0. 2024.6 2.480E-01 2.018E-02 O238400200038 0. 0. 2051.0 3.864E-01 6.773E-03 O238400200039 0. 0. 2084.9 1.608E+00 5.690E-02 O238400200040 0. 0. 2097.1 1.865E+00 6.597E-02 O238400200041 0. 0. 2113.4 5.381E-01 1.904E-02 O238400200042 0. 0. 2143.8 1.218E-01 1.395E-02 O238400200043 0. 0. 2174.2 6.571E-02 1.595E-02 O238400200044 0. 0. 2203.5 6.516E-02 1.363E-02 O238400200045 0. 0. 2243.2 7.893E-02 1.317E-02 O238400200046 0. 0. 2274.4 7.964E-02 1.386E-02 O238400200047 0. 0. 2298.8 2.986E-01 1.599E-02 O238400200048 0. 0. 2322.6 1.034E-01 1.575E-02 O238400200049 0. 90. 1330.8 6.451E-02 1.497E-02 O238400200050 0. 90. 1360.9 1.059E-01 1.371E-02 O238400200051 0. 90. 1393.1 1.126E-01 7.064E-03 O238400200052 0. 90. 1422.4 1.400E-01 7.494E-03 O238400200053 0. 90. 1451.6 1.833E-01 1.492E-02 O238400200054 0. 90. 1481.9 2.486E-01 2.023E-02 O238400200055 0. 90. 1511.1 3.460E-01 1.182E-02 O238400200056 0. 90. 1543.2 5.681E-01 1.942E-02 O238400200057 0. 90. 1572.4 9.327E-01 3.188E-02 O238400200058 0. 90. 1601.7 2.005E+00 6.853E-02 O238400200059 0. 90. 1632.7 5.741E+00 2.442E-01 O238400200060 0. 90. 1664.8 9.426E+00 4.008E-01 O238400200061 0. 90. 1693.3 3.073E+00 7.909E-02 O238400200062 0. 90. 1721.8 1.141E+00 2.936E-02 O238400200063 0. 90. 1752.2 5.500E-01 2.794E-02 O238400200064 0. 90. 1784.4 3.020E-01 2.029E-02 O238400200065 0. 90. 1811.9 1.547E-01 1.288E-02 O238400200066 0. 90. 1842.2 1.162E-01 1.059E-02 O238400200067 0. 90. 1872.5 9.111E-02 1.251E-02 O238400200068 0. 90. 1904.7 7.726E-02 1.400E-02 O238400200069 0. 90. 1934.0 6.329E-02 1.367E-02 O238400200070 0. 90. 1964.2 7.665E-02 1.334E-02 O238400200071 0. 90. 1995.4 8.812E-02 1.492E-02 O238400200072 0. 90. 2022.8 1.164E-01 1.244E-02 O238400200073 0. 90. 2053.0 2.103E-01 1.413E-02 O238400200074 0. 90. 2072.7 6.235E-01 2.206E-02 O238400200075 0. 90. 2084.9 1.608E+00 5.690E-02 O238400200076 0. 90. 2098.1 1.865E+00 6.595E-02 O238400200077 0. 90. 2114.3 5.381E-01 1.903E-02 O238400200078 0. 90. 2142.9 1.487E-01 1.210E-02 O238400200079 0. 90. 2174.1 9.886E-02 1.674E-02 O238400200080 0. 90. 2203.5 7.889E-02 1.099E-02 O238400200081 0. 90. 2242.2 9.391E-02 1.215E-02 O238400200082 0. 90. 2272.4 1.007E-01 1.706E-02 O238400200083 0. 90. 2298.8 2.261E-01 1.004E-02 O238400200084 1384. 0. 1509.3 3.166E-02 7.335E-03 O238400200085 1384. 0. 1540.4 3.164E-02 7.669E-03 O238400200086 1384. 0. 1571.4 3.927E-02 7.385E-03 O238400200087 1384. 0. 1601.0 1.494E-01 9.361E-03 O238400200088 1384. 0. 1631.5 4.457E-01 2.794E-02 O238400200089 1384. 0. 1689.6 2.575E-01 2.336E-02 O238400200090 1384. 0. 1716.6 1.188E-01 1.190E-02 O238400200091 1384. 0. 1752.1 7.960E-02 1.845E-02 O238400200092 1384. 0. 1783.0 4.933E-02 1.039E-02 O238400200093 1384. 0. 1811.1 3.544E-02 8.593E-03 O238400200094 1384. 0. 1841.2 4.437E-02 9.341E-03 O238400200095 1384. 0. 1872.2 3.926E-02 8.263E-03 O238400200096 1384. 0. 1902.2 3.130E-02 8.269E-03 O238400200097 1384. 0. 1930.4 3.047E-02 6.422E-03 O238400200098 1384. 0. 1961.5 4.422E-02 7.932E-03 O238400200099 1384. 0. 1991.6 3.946E-02 9.568E-03 O238400200100 1384. 0. 2022.6 3.841E-02 1.057E-02 O238400200101 1384. 0. 2052.7 4.008E-02 7.192E-03 O238400200102 1384. 0. 2082.2 1.116E-01 1.191E-02 O238400200103 1384. 0. 2109.3 7.159E-02 7.170E-03 O238400200104 1384. 0. 2111.2 9.617E-02 7.816E-03 O238400200105 1384. 0. 2141.1 4.797E-02 5.268E-03 O238400200106 1384. 0. 2172.1 5.459E-02 8.688E-03 O238400200107 1384. 0. 2202.3 6.267E-02 9.344E-03 O238400200108 1384. 0. 2240.9 7.846E-02 1.014E-02 O238400200109 1384. 0. 2270.9 6.476E-02 1.030E-02 O238400200110 1384. 0. 2321.7 7.759E-02 1.156E-02 O238400200111 1384. 90. 1509.3 3.166E-02 7.335E-03 O238400200112 1384. 90. 1540.3 2.355E-02 7.754E-03 O238400200113 1384. 90. 1571.5 4.795E-02 1.647E-02 O238400200114 1384. 90. 1600.9 9.595E-02 7.210E-03 O238400200115 1384. 90. 1630.4 2.557E-01 2.127E-02 O238400200116 1384. 90. 1663.4 3.875E-01 1.370E-02 O238400200117 1384. 90. 1689.4 1.668E-01 1.832E-02 O238400200118 1384. 90. 1721.9 5.437E-02 8.652E-03 O238400200119 1384. 90. 1752.8 3.872E-02 8.560E-03 O238400200120 1384. 90. 1781.8 2.379E-02 7.079E-03 O238400200121 1384. 90. 1811.9 2.377E-02 8.101E-03 O238400200122 1384. 90. 1842.9 2.177E-02 7.910E-03 O238400200123 1384. 90. 1871.9 1.551E-02 5.634E-03 O238400200124 1384. 90. 1932.2 2.818E-02 6.272E-03 O238400200125 1384. 90. 1963.2 2.346E-02 7.860E-03 O238400200126 1384. 90. 1991.5 3.095E-02 7.095E-03 O238400200127 1384. 90. 2023.4 3.173E-02 7.696E-03 O238400200128 1384. 90. 2052.6 3.089E-02 7.493E-03 O238400200129 1384. 90. 2078.3 9.297E-02 7.734E-03 O238400200130 1384. 90. 2109.3 7.159E-02 7.644E-03 O238400200131 1384. 90. 2140.9 3.162E-02 7.671E-03 O238400200132 1384. 90. 2170.2 4.752E-02 8.602E-03 O238400200133 1384. 90. 2202.2 4.747E-02 8.593E-03 O238400200134 1384. 90. 2241.6 4.701E-02 7.493E-03 O238400200135 1384. 90. 2270.8 5.937E-02 9.464E-03 O238400200136 1384. 90. 2322.4 4.569E-02 6.609E-03 O238400200137 ENDDATA 121 0 O238400200138 ENDSUBENT 137 0 O238400299999 SUBENT O2384003 20191223 O073O238400300001 BIB 4 6 O238400300002 REACTION (14-SI-28(P,G),PAR,WID/STR,,RG) O238400300003 ANALYSIS For the resonant part, Breit-Wigner amplitudes are O238400300004 used with hard-sphere and Coulomb phase shifts O238400300005 ERR-ANALYS (ERR-T) Errors include, besides the uncertainties O238400300006 resulting from the fit, + ERR-1. O238400300007 STATUS (CURVE) Figs 3,4 from Nucl.Phys.,A324(1979)1 O238400300008 ENDBIB 6 0 O238400300009 NOCOMMON 0 0 O238400300010 DATA 4 6 O238400300011 E-LVL EN-RES DATA ERR-T O238400300012 MEV MEV EV EV O238400300013 0. 1.65 6.06 0.92 O238400300014 0. 2.09 0.98 0.17 O238400300015 0. 2.88 4.8 3. O238400300016 1384. 1.65 0.39 0.06 O238400300017 1384. 2.09 0.06 0.01 O238400300018 1384. 2.88 0.8 0.6 O238400300019 ENDDATA 8 0 O238400300020 ENDSUBENT 19 0 O238400399999 SUBENT O2384004 20191223 O073O238400400001 BIB 4 6 O238400400002 REACTION (14-SI-28(P,G),,WID/STR,,RG) O238400400003 ANALYSIS For the resonant part, Breit-Wigner amplitudes are O238400400004 used with hard-sphere and Coulomb phase shifts O238400400005 ERR-ANALYS (ERR-T) Errors include, besides the uncertainties O238400400006 resulting from the fit, + ERR-1. O238400400007 STATUS (CURVE) Figs 3,4 from Nucl.Phys.,A324(1979)1 O238400400008 ENDBIB 6 0 O238400400009 NOCOMMON 0 0 O238400400010 DATA 3 2 O238400400011 EN-RES DATA ERR-T O238400400012 MEV EV EV O238400400013 1.65 6.45 0.98 O238400400014 2.09 1.09 0.19 O238400400015 ENDDATA 4 0 O238400400016 ENDSUBENT 15 0 O238400499999 ENDENTRY 4 0 O238499999999