ENTRY A0652 20030715 0000A065200000001 SUBENT A0652001 20030715 0000A065200100001 BIB 10 28 A065200100002 TITLE The E1 and E2 capture amplitudes in A065200100003 12-C(alpha,gamma0)16-O. A065200100004 AUTHOR (G.Roters, C.Rolfs, F.Strieder, H.P.Trautvetter) A065200100005 INSTITUTE (2GERBOC) A065200100006 REFERENCE (J,EPJ/A,6,451,1999) A065200100007 (J,NP/A,621,161,1997) Preliminary report. A065200100008 SAMPLE A windowless gas-target system with five pumping stage.A065200100009 The effects on the gas density are less than 1% and A065200100010 were neglected in the analysis. A065200100011 MONITOR (2-HE-4(6-C-12,EL)2-HE-4,,DA) The elastic scattering A065200100012 yield of helium was used to monitor the product of beamA065200100013 intensity and target density as well as possible A065200100014 contaminents in both. A065200100015 DETECTOR (BGO) 2-inchs and 4-inchs cristals were placed a 90 A065200100016 degrees. The background due to high-energy gamma-rays A065200100017 and thermal neutron capture was minimized using a 10 cmA065200100018 thick lead shield and a 1 mm thick cadmium sheet. The A065200100019 active shielding against muons was used too. A065200100020 FACILITY (DYNAM,2GERBOC) 12-C ion beam with a particle current A065200100021 of up to 20 mu-a at the target. E-lab = 4 - 15.5 MeV. A065200100022 METHOD (GSPEC) A065200100023 HISTORY (20000214C) A065200100024 (20000113R) Data table for elastic scattering was A065200100025 received from F.Strieder A065200100026 (20020810A) Additional reference is added. A little A065200100027 corrections in reaction line. A065200100028 (20030714A) Corrected according to V.McLane Remarks A065200100029 (20030715U) Last checking has been done. A065200100030 ENDBIB 28 0 A065200100031 NOCOMMON 0 0 A065200100032 ENDSUBENT 31 0 A065200199999 SUBENT A0652002 20030715 0000A065200200001 BIB 5 11 A065200200002 REACTION (6-C-12(A,EL)6-C-12,,DA,,RTH) A065200200003 DETECTOR (SIBAR) The detectors were disposed at 45 and 75 A065200200004 degrees in lab-system. A065200200005 SAMPLE In order to determine the deviations of the elastic A065200200006 scattering yields from the rutherford scattering law, A065200200007 argon gas (1 torr) was admixed into helium gas (6 torr)A065200200008 ERR-ANALYS Data uncertatnies is 1-4%. Another information is A065200200009 absent A065200200010 FLAG (1.) Repeated measurement. A065200200011 (2.) The result was obtained twice at repeated A065200200012 measurements. A065200200013 ENDBIB 11 0 A065200200014 NOCOMMON 0 0 A065200200015 DATA 4 124 A065200200016 EN-CM ANG DATA FLAG A065200200017 MEV ADEG NO-DIM NO-DIM A065200200018 1.434 45. 1. A065200200019 1.434 75. 1.04 A065200200020 1.56 45. 0.97 A065200200021 1.56 75. 0.95 A065200200022 1.686 45. 0.98 A065200200023 1.686 75. 0.99 A065200200024 1.749 45. 1.01 A065200200025 1.749 75. 1.05 A065200200026 1.811 45. 0.98 A065200200027 1.811 75. 1.02 A065200200028 1.874 45. 1. A065200200029 1.874 75. 1.06 A065200200030 1.937 45. 1.01 A065200200031 1.937 75. 1.05 A065200200032 2. 45. 1.01 A065200200033 2. 75. 1.09 A065200200034 2.063 45. 0.99 A065200200035 2.063 75. 1.11 A065200200036 2.126 45. 1.01 A065200200037 2.126 75. 1.18 A065200200038 2.189 45. 1.04 A065200200039 2.189 75. 1.23 A065200200040 2.252 45. 1.03 A065200200041 2.252 75. 1.28 A065200200042 2.314 45. 1. A065200200043 2.314 75. 1.3 A065200200044 2.377 45. 0.99 A065200200045 2.377 75. 1.26 A065200200046 2.44 45. 0.97 A065200200047 2.44 75. 1.12 A065200200048 2.503 45. 0.98 A065200200049 2.503 75. 1.01 A065200200050 2.566 45. 0.98 A065200200051 2.566 45. 0.98 1. A065200200052 2.566 45. 0.99 2. A065200200053 2.566 45. 1. 1. A065200200054 2.566 45. 1.02 1. A065200200055 2.566 45. 1.04 1. A065200200056 2.566 75. 0.91 A065200200057 2.566 75. 0.93 2. A065200200058 2.566 75. 0.96 2. A065200200059 2.566 75. 0.97 1. A065200200060 2.566 75. 1. 1. A065200200061 2.616 45. 0.96 A065200200062 2.616 75. 0.89 A065200200063 2.641 45. 1. A065200200064 2.641 75. 0.89 A065200200065 2.654 45. 0.96 A065200200066 2.654 75. 0.89 A065200200067 2.66 45. 0.89 A065200200068 2.66 75. 0.89 A065200200069 2.666 45. 0.91 A065200200070 2.666 45. 0.95 1. A065200200071 2.666 75. 0.88 A065200200072 2.666 75. 0.89 1. A065200200073 2.672 45. 0.85 A065200200074 2.672 45. 0.96 1. A065200200075 2.672 75. 0.84 A065200200076 2.672 75. 0.91 1. A065200200077 2.675 45. 0.89 A065200200078 2.675 75. 0.8 A065200200079 2.679 45. 1.12 A065200200080 2.679 45. 1.14 1. A065200200081 2.679 45. 1.17 1. A065200200082 2.679 75. 0.83 A065200200083 2.679 75. 0.84 2. A065200200084 2.685 45. 1.1 A065200200085 2.685 45. 1.14 1. A065200200086 2.685 75. 0.85 A065200200087 2.685 75. 0.9 1. A065200200088 2.691 45. 1.03 A065200200089 2.691 45. 1.09 1. A065200200090 2.691 75. 0.83 A065200200091 2.691 75. 0.87 1. A065200200092 2.716 45. 1.03 A065200200093 2.716 45. 1.03 1. A065200200094 2.716 75. 0.87 A065200200095 2.716 75. 0.88 1. A065200200096 2.754 45. 1.04 A065200200097 2.754 45. 1.05 1. A065200200098 2.754 75. 0.83 A065200200099 2.754 75. 0.86 1. A065200200100 2.817 45. 1.03 A065200200101 2.817 75. 0.83 A065200200102 2.942 45. 1.07 A065200200103 2.942 75. 0.81 A065200200104 3.005 45. 1.11 A065200200105 3.005 75. 0.81 A065200200106 3.068 45. 1.09 A065200200107 3.068 45. 1.11 1. A065200200108 3.068 75. 0.77 A065200200109 3.068 75. 0.77 1. A065200200110 3.131 45. 1.2 A065200200111 3.131 45. 1.22 1. A065200200112 3.131 75. 0.77 A065200200113 3.131 75. 0.77 1. A065200200114 3.168 45. 1.29 A065200200115 3.168 75. 0.73 A065200200116 3.181 45. 0.99 A065200200117 3.181 75. 0.72 A065200200118 3.193 45. 0.53 A065200200119 3.193 75. 0.74 A065200200120 3.206 45. 0.59 A065200200121 3.206 75. 0.74 A065200200122 3.231 45. 0.81 A065200200123 3.231 75. 0.74 A065200200124 3.256 45. 0.92 A065200200125 3.256 75. 0.76 A065200200126 3.319 45. 1.01 A065200200127 3.319 75. 0.73 A065200200128 3.381 45. 1.03 A065200200129 3.381 75. 0.71 A065200200130 3.444 45. 1.05 A065200200131 3.444 75. 0.7 A065200200132 3.507 45. 1.05 A065200200133 3.507 75. 0.7 A065200200134 3.57 45. 1.04 A065200200135 3.57 75. 0.66 A065200200136 3.632 45. 1.07 A065200200137 3.632 75. 0.66 A065200200138 3.695 45. 1.1 A065200200139 3.695 75. 0.64 A065200200140 3.82 45. 1.07 A065200200141 3.82 75. 0.61 A065200200142 ENDDATA 126 0 A065200200143 ENDSUBENT 142 0 A065200299999 SUBENT A0652003 20030715 0000A065200300001 BIB 6 8 A065200300002 REACTION (2-HE-4(6-C-12,G)8-O-16,PAR,SIG,,REL) A065200300003 DETECTOR (BGO) 4-inch crystal in the close geometry. A065200300004 CORRECTION The number of count from the capture transition was A065200300005 corrected for variation in detection efficiency. A065200300006 EN-SEC (E-LVL-FIN,8-O-16) A065200300007 STATUS (DEP,A0652002) The data were normalized to the elastic A065200300008 scattering yield. A065200300009 ERR-ANALYS (ERR-S) Statistical error only. A065200300010 ENDBIB 8 0 A065200300011 COMMON 1 3 A065200300012 E-LVL-FIN A065200300013 MEV A065200300014 0. A065200300015 ENDCOMMON 3 0 A065200300016 DATA 3 25 A065200300017 EN-CM DATA ERR-S A065200300018 MEV ARB-UNITS ARB-UNITS A065200300019 0.935 0.51 0.16 A065200300020 1.06 1.78 0.34 A065200300021 1.185 3.82 0.51 A065200300022 1.311 5.74 0.56 A065200300023 1.437 11.8 1. A065200300024 1.562 19.3 1.2 A065200300025 1.688 33.4 0.4 A065200300026 1.94 108. 1. A065200300027 2.091 245. 2. A065200300028 2.191 445. 3. A065200300029 2.291 785. 4. A065200300030 2.34 917. 5. A065200300031 2.39 973. 4. A065200300032 2.441 933. 11. A065200300033 2.492 737. 5. A065200300034 2.543 589. 5. A065200300035 2.743 356. 5. A065200300036 2.793 263. 13. A065200300037 2.818 273. 5. A065200300038 2.893 250. 20. A065200300039 2.943 247. 5. A065200300040 2.993 234. 26. A065200300041 3.219 200. 6. A065200300042 3.294 287. 4. A065200300043 3.394 235. 32. A065200300044 ENDDATA 27 0 A065200300045 ENDSUBENT 44 0 A065200399999 SUBENT A0652004 20030715 0000A065200400001 BIB 4 7 A065200400002 REACTION (6-C-12(A,G)8-O-16,EP,SIG,,SFC) A065200400003 E1 contribution A065200400004 DETECTOR (BGO) 4-inchs crystal in close geometry. A065200400005 REL-REF (R,,K.U.KETTNER+,J,ZP/A,308,73,1982) Experimental data A065200400006 were normalized to REL-REF data near the E=2.42 MeV A065200400007 resonance. A065200400008 ERR-ANALYS (ERR-S) Statistical errors only. A065200400009 ENDBIB 7 0 A065200400010 COMMON 1 3 A065200400011 POLAR A065200400012 NO-DIM A065200400013 1. A065200400014 ENDCOMMON 3 0 A065200400015 DATA 3 13 A065200400016 EN-CM DATA ERR-S A065200400017 MEV MB*MEV MB*MEV A065200400018 1.688 17.9 3.7 A065200400019 1.94 21.8 2.4 A065200400020 2.091 33.4 2.8 A065200400021 2.191 49.3 3.5 A065200400022 2.291 69.7 5.3 A065200400023 2.34 63.8 4.4 A065200400024 2.39 60.6 3.5 A065200400025 2.492 33.9 2.4 A065200400026 2.543 20.2 1.7 A065200400027 2.793 3.6 0.5 A065200400028 2.893 2.8 0.8 A065200400029 2.993 1.6 0.6 A065200400030 3.294 0.9 0.4 A065200400031 ENDDATA 15 0 A065200400032 ENDSUBENT 31 0 A065200499999 SUBENT A0652005 20030715 0000A065200500001 BIB 3 10 A065200500002 REACTION ((6-C-12(A,G)8-O-16,EP,SIG)// A065200500003 (6-C-12(A,G)8-O-16,EP,SIG)) A065200500004 Ratio of cross sections E2/E1 multipolarities. A065200500005 DETECTOR (BGO) 2*2-inchs cristal in far geometry, and 4*4-inchs A065200500006 in close geometry. A065200500007 ERR-ANALYS (ERR-T) The quoted uncertainties include the A065200500008 statistical errors from A0652003, the errors in the A065200500009 angular distributions of E2 and E1 radiations, and the A065200500010 error in the normalization ratio A065200500011 igamma(4"bgo)/igamma(2"bgo) at En=2.39 MeV. A065200500012 ENDBIB 10 0 A065200500013 COMMON 2 3 A065200500014 POLAR-NM POLAR-DN A065200500015 NO-DIM NO-DIM A065200500016 2. 1. A065200500017 ENDCOMMON 3 0 A065200500018 DATA 3 25 A065200500019 EN-CM DATA ERR-T A065200500020 MEV NO-DIM NO-DIM A065200500021 0.935 0.86 0.7 A065200500022 1.06 1.42 0.58 A065200500023 1.185 1.13 0.4 A065200500024 1.311 0.33 0.21 A065200500025 1.437 0.41 0.22 A065200500026 1.562 0.2 0.15 A065200500027 1.688 0.12 0.1 A065200500028 1.94 0.04 0.08 A065200500029 2.091 0.01 0.08 A065200500030 2.191 0.01 0.07 A065200500031 2.291 0.03 0.25 A065200500032 2.34 0.03 0.03 A065200500033 2.39 0.04 0.04 A065200500034 2.441 0.13 0.07 A065200500035 2.492 0.08 0.06 A065200500036 2.543 0.09 0.08 A065200500037 2.743 0.72 0.15 A065200500038 2.793 0.44 0.16 A065200500039 2.818 0.67 0.19 A065200500040 2.893 0.95 0.17 A065200500041 2.943 1.25 0.22 A065200500042 2.993 1.36 0.2 A065200500043 3.219 2.46 1.2 A065200500044 3.294 2.91 0.41 A065200500045 3.394 4.37 0.56 A065200500046 ENDDATA 27 0 A065200500047 ENDSUBENT 46 0 A065200599999 ENDENTRY 5 0 A065299999999