ENTRY O1536 20070813 O031O153600000001 SUBENT O1536001 20070813 O031O153600100001 BIB 13 38 O153600100002 TITLE Total fusion cross sections for the Be-9+Si-28. O153600100003 AUTHOR (J.S.Eck, J.R.Leigh, T.R.Ophel, P.D.Clark) O153600100004 REFERENCE (J,PR/C,21,2352,1980) O153600100005 INSTITUTE (3AULCBR) O153600100006 SAMPLE The targets consisted of an 80-mug/cm**2 self- O153600100007 supporting foil of Si-28. The contamination of O-16 wasO153600100008 less than 3% O153600100009 DETECTOR (SIBAR) O153600100010 A delta-E-E ionization chamber surface barrier detectorO153600100011 system by detecting the evaporation residues. O153600100012 MONITOR (79-AU-197(4-BE-9,EL)79-AU-197,,DA) The monitor O153600100013 detector at 19-degree were determined from elastic O153600100014 scattering of Be-9 from a Au-197. O153600100015 COMMENT *By authors*.The relative normalization was obtained O153600100016 using the fixed angle monitor detector. O153600100017 The absolute cross sections were determined by O153600100018 normalizing to elastic scattering cross sections, whichO153600100019 were measured simultaneously with the fusion O153600100020 measurements. Because the elastic scattering is not O153600100021 pure Rutherford for angles at which the maxima occur, O153600100022 optical model calculations using the parameter sets O153600100023 which fitted the elastic scattering angular O153600100024 distributions were used for normalization. This O153600100025 procedure introduces an error of about 8% in the O153600100026 fusion cross section determination. The error obtained O153600100027 by combining the above errors and the error from O153600100028 counting statistics (typically 2%) leads to an error inO153600100029 the fusion cross section measurements of the order of O153600100030 20%. O153600100031 FACILITY (VDGT,3AULCBR) 14UD Pelletron accelerator. O153600100032 METHOD (EDE) O153600100033 HISTORY (20070809C) By S.B O153600100034 (20070813U) Last checking has been done. O153600100035 STATUS (CURVE) By CAJAD O153600100036 ADD-RES (COMP) Optical model calculations. O153600100037 The total reaction cross sections calculated using O153600100038 the optical model parameters which fitted the elastic O153600100039 scattering angular distribution. O153600100040 ENDBIB 38 0 O153600100041 NOCOMMON 0 0 O153600100042 ENDSUBENT 41 0 O153600199999 SUBENT O1536002 20070813 O031O153600200001 BIB 4 6 O153600200002 REACTION (14-SI-28(4-BE-9,FUS),,DA,ER) Fig 1 O153600200003 MISC-COL (MISC) Ang. distrib. in mb/rad as presented on fig.1 O153600200004 COMMENT *By compiler*. Compiler recalculated ang. distribution O153600200005 using formula from page 2353. O153600200006 All data were divided on 2*pi*sin(theta). O153600200007 ERR-ANALYS (ANG-ERR-D).Digitizing error of angle. O153600200008 ENDBIB 6 0 O153600200009 COMMON 1 3 O153600200010 ANG-ERR-D O153600200011 ADEG O153600200012 0.3 O153600200013 ENDCOMMON 3 0 O153600200014 DATA 4 35 O153600200015 EN ANG-CM DATA-CM MISC O153600200016 MEV ADEG MB/SR SEE TEXT O153600200017 30. 5.3 1.49734 0.869 O153600200018 30. 5.3 1.98496 1.152 O153600200019 30. 7.4 1.58918 1.286 O153600200020 30. 9.1 1.35754 1.349 O153600200021 30. 11.3 1.10468 1.36 O153600200022 30. 13.6 0.7899 1.167 O153600200023 30. 16.4 0.55469 0.984 O153600200024 30. 18.6 0.40319 0.808 O153600200025 30. 20.5 0.31177 0.686 O153600200026 30. 25.2 0.18167 0.486 O153600200027 30. 30.2 0.10473 0.331 O153600200028 30. 35.1 0.0656 0.237 O153600200029 46. 7.2 2.22739 1.754 O153600200030 46. 9.1 1.64233 1.632 O153600200031 46. 11.1 1.37978 1.669 O153600200032 46. 13.6 1.0532 1.556 O153600200033 46. 16. 0.84304 1.46 O153600200034 46. 18.4 0.67063 1.33 O153600200035 46. 20.7 0.44442 0.987 O153600200036 46. 25.2 0.31063 0.831 O153600200037 46. 30.2 0.13827 0.437 O153600200038 46. 35.1 0.09273 0.335 O153600200039 60. 5.1 2.63194 1.47 O153600200040 60. 7.4 2.43073 1.967 O153600200041 60. 9.6 2.19888 2.304 O153600200042 60. 11.3 1.70006 2.093 O153600200043 60. 14.1 1.68623 2.581 O153600200044 60. 16.4 1.42619 2.53 O153600200045 60. 18.8 1.11517 2.258 O153600200046 60. 21.4 0.85844 1.968 O153600200047 60. 25.9 0.5411 1.485 O153600200048 60. 30.8 0.29529 0.95 O153600200049 60. 35.3 0.15782 0.573 O153600200050 60. 40.1 0.10329 0.418 O153600200051 60. 50.1 0.03133 0.151 O153600200052 ENDDATA 37 0 O153600200053 ENDSUBENT 52 0 O153600299999 SUBENT O1536003 20070813 O031O153600300001 BIB 4 9 O153600300002 REACTION (14-SI-28(4-BE-9,FUS),,SIG) Fig 3 O153600300003 COMMENT *By authors*.The total fusion cross section at given O153600300004 energy was obtained by summing the area under the O153600300005 angular distribution. O153600300006 *By compiler*.Compiler recalculated energy from 1/Ec.m.O153600300007 values. O153600300008 MISC-COL (MISC) 1/incident energy in 1/MeV units O153600300009 ERR-ANALYS (DATA-ERR).The error is reported by authors on fig. O153600300010 (EN-ERR-DIG).Digitizing error of incident energy. O153600300011 ENDBIB 9 0 O153600300012 COMMON 1 3 O153600300013 EN-ERR-DIG O153600300014 MEV O153600300015 0.01 O153600300016 ENDCOMMON 3 0 O153600300017 DATA 4 6 O153600300018 EN-CM DATA DATA-ERR MISC O153600300019 MEV B B 1/MEV O153600300020 46.86036 1.08 0.24 0.02134 O153600300021 42.39084 0.93 0.22 0.02359 O153600300022 38.41721 0.8 0.18 0.02603 O153600300023 34.96503 0.6 0.14 0.0286 O153600300024 30.65604 0.92 0.2 0.03262 O153600300025 22.78423 0.5 0.12 0.04389 O153600300026 ENDDATA 8 0 O153600300027 ENDSUBENT 26 0 O153600399999 ENDENTRY 3 0 O153699999999