ENTRY A0706 20051207 A061A070600000001 SUBENT A0706001 20051207 A061A070600100001 BIB 13 46 A070600100002 TITLE Fission fragment anisotropies for 19-F + 209-Bi system A070600100003 REFERENCE (J,EPJ/A,7,59,2000) A070600100004 AUTHOR (A.M.Samant, S.Kailas, A.Chatterjee, A.Shrivastava, A070600100005 A.Navin, P.Singh) A070600100006 INSTITUTE (3INDTRM) Nuclear Physics Division. A070600100007 (2ITYPAD) I.N.F.N and Department of Physics. A070600100008 (1USAMSU) A070600100009 REL-REF (N,,A.KARNIK+,J,PR/C,52,3189,1995) Additional details A070600100010 of the experimental set up and data analysis. A070600100011 (R,,V.E.VIOLA+,J,PR/C,31,1550,1985) The fission A070600100012 fragment angular distributions were transformed to the A070600100013 centre-of-mass system assuming symmetric mass division A070600100014 and using Viola systematics. A070600100015 FACILITY (VDGT,3INDTRM) The 14UD BARC-TIFR Pelletron A070600100016 accelerator. A070600100017 (VDGT,3INDNSD) The 16UD Pelletron accelerator was usedA070600100018 at highest energy. A070600100019 SAMPLE The measurements were carried out using self-supportingA070600100020 209-Bi targets (thickness ~250 mug/cm2) A070600100021 ADD-RES (STRUC) In addition to the fission excitation function,A070600100022 the quasi-elastic data have been measured in the energyA070600100023 range from 84 to 100 MeV by employing a silicon A070600100024 telescope at an angle of 170. The extraction of the A070600100025 barrier distribution from this data and its implicationA070600100026 in the determination of the angular momentum A070600100027 distribution of the compound nucleus is discussed. A070600100028 (ANGD) The quasi-elastic ( sum of elastic, inelastic A070600100029 and transfer channels around the elastics) angular A070600100030 distributions have also been measured at a bombarding A070600100031 energy of E = 92.7 MeV very close to the fusion barrierA070600100032 for this system, to deduce the corresponding fusion A070600100033 cross section. A070600100034 MONITOR (90-TH-232(9-F-19,EL)90-TH-232,,SIG) A070600100035 At lower angles the data have been normalised A070600100036 to Rutherford cross sections. A070600100037 PART-DET (FF) A070600100038 DETECTOR (TELES,SIBAR,SIBAR) Three DE-E silicon surface barrierA070600100039 telescopes. A070600100040 (TELES,IOCH,SIBAR) One DEgas common to three silicon A070600100041 surface barrier E detectors. In the case of the A070600100042 gas-surface barrier telescopes, the active gas length A070600100043 for DE was 200 mm of P-10 gas maintained at a pressure A070600100044 of 10 mbar. A070600100045 METHOD (EDE) A070600100046 HISTORY (20041129C) By F.Ch A070600100047 (20051207U) Last checking has been done. A070600100048 ENDBIB 46 0 A070600100049 NOCOMMON 0 0 A070600100050 ENDSUBENT 49 0 A070600199999 SUBENT A0706002 20051207 A061A070600200001 BIB 3 6 A070600200002 REACTION (83-BI-209(9-F-19,F),,DA,FF,RSD) A070600200003 STATUS (CURVE) By CAJAD. A070600200004 ERR-ANALYS (ANG-ERR-D) Data point reader uncertainty. A070600200005 (ERR-DIG) Data point reader uncertainty A070600200006 (DATA-ERR) The uncertainty is shown on figure. An A070600200007 analysis is not given. A070600200008 ENDBIB 6 0 A070600200009 COMMON 2 3 A070600200010 ANG-ERR-D ERR-DIG A070600200011 ADEG NO-DIM A070600200012 0.3 0.008 A070600200013 ENDCOMMON 3 0 A070600200014 DATA 4 25 A070600200015 EN ANG-CM DATA-CM DATA-ERR A070600200016 MEV ADEG NO-DIM NO-DIM A070600200017 91. 101.7 1.02 A070600200018 91. 112.1 1.088 A070600200019 91. 121.4 1.089 A070600200020 91. 130.7 1.22 0.04 A070600200021 91. 155.4 1.388 A070600200022 91. 171.5 1.5 0.04 A070600200023 99.7 92.86 1. 0.06 A070600200024 99.7 103. 1.003 A070600200025 99.7 112.8 1.029 A070600200026 99.7 131. 1.164 A070600200027 99.7 139.8 1.296 A070600200028 99.7 148.1 1.428 A070600200029 99.7 156.5 1.596 A070600200030 99.7 164.5 1.74 A070600200031 99.7 172.1 1.837 A070600200032 103.7 93.13 1.04 A070600200033 103.7 103.5 0.973 A070600200034 103.7 112.8 1.13 0.05 A070600200035 103.7 122.3 1.17 0.06 A070600200036 103.7 131.4 1.22 0.06 A070600200037 103.7 140.1 1.45 0.07 A070600200038 103.7 148.7 1.52 0.07 A070600200039 103.7 156.5 1.83 0.08 A070600200040 103.7 164.3 1.95 0.09 A070600200041 103.7 171.9 2.03 0.09 A070600200042 ENDDATA 27 0 A070600200043 ENDSUBENT 42 0 A070600299999 SUBENT A0706003 20051207 A061A070600300001 BIB 3 11 A070600300002 REACTION (83-BI-209(9-F-19,F),,DA,FF,RSD) A070600300003 ERR-ANALYS (ERR-T) The errors on the fission cross sections and A070600300004 the anisotropies are due to counting statistics, A070600300005 inter-detector solid angle normalizations and fitting A070600300006 procedure used to extrapolate data to 180 degree. A070600300007 COMMENT -By authors. The differential fission cross sections A070600300008 were fitted to the sum of Legendre polynomials and are A070600300009 extrapolated to 180 degree to obtain experimental A070600300010 anisotropy values. A070600300011 The fission fragment angular distributions were A070600300012 measured in the angular range of 80 to 170 degree A070600300013 ENDBIB 11 0 A070600300014 COMMON 1 3 A070600300015 ANG-CM A070600300016 ADEG A070600300017 180. A070600300018 ENDCOMMON 3 0 A070600300019 DATA 3 10 A070600300020 EN DATA-CM ERR-T A070600300021 MEV NO-DIM NO-DIM A070600300022 88. 1.3 0.09 A070600300023 89.7 1.38 0.09 A070600300024 91. 1.49 0.07 A070600300025 92.7 1.44 0.08 A070600300026 94. 1.57 0.08 A070600300027 95.5 1.6 0.08 A070600300028 99.7 1.84 0.09 A070600300029 103.7 2.1 0.1 A070600300030 107.6 2.45 0.11 A070600300031 125.6 2.98 0.13 A070600300032 ENDDATA 12 0 A070600300033 ENDSUBENT 32 0 A070600399999 SUBENT A0706004 20051207 A061A070600400001 BIB 5 8 A070600400002 REACTION (83-BI-209(9-F-19,F),,SIG) A070600400003 ERR-ANALYS (ERR-T) The errors on the fission cross sections and A070600400004 the anisotropies are due to counting statistics, A070600400005 inter-detector solid angle normalizations and fitting A070600400006 procedure used to extrapolate data to 180 degree. A070600400007 ANALYSIS (INTAD) A070600400008 STATUS (DEP,A0702002) A070600400009 MISC-COL (MISC) The ratio of EN-CM to fusion barrier energy. A070600400010 ENDBIB 8 0 A070600400011 NOCOMMON 0 0 A070600400012 DATA 4 10 A070600400013 EN DATA ERR-T MISC A070600400014 MEV MB MB NO-DIM A070600400015 88. 6.3 0.6 0.95 A070600400016 89.7 16.8 1.1 0.97 A070600400017 91. 34. 2. 0.98 A070600400018 92.7 75. 5. 1. A070600400019 94. 108. 6. 1.01 A070600400020 95.5 159. 9. 1.03 A070600400021 99.7 318. 30. 1.07 A070600400022 103.7 399. 20. 1.12 A070600400023 107.6 551. 30. 1.16 A070600400024 125.6 1109. 80. 1.35 A070600400025 ENDDATA 12 0 A070600400026 ENDSUBENT 25 0 A070600499999 SUBENT A0706005 20051207 A061A070600500001 BIB 3 6 A070600500002 REACTION (83-BI-209(9-F-19,FUS),,SIG) A070600500003 COMMENT -By authors. From an optical model analysis of the A070600500004 quasi-elastic data, the fusion cross section has been A070600500005 determined and this compares very well with the fissionA070600500006 cross section measured at this energy A070600500007 ERR-ANALYS (DATA-ERR) An analysis is not given. A070600500008 ENDBIB 6 0 A070600500009 NOCOMMON 0 0 A070600500010 DATA 3 1 A070600500011 EN DATA DATA-ERR A070600500012 MEV MB MB A070600500013 92.7 68. 7. A070600500014 ENDDATA 3 0 A070600500015 ENDSUBENT 14 0 A070600599999 ENDENTRY 5 0 A070699999999