ENTRY D6136 20120430 D083D613600000001 SUBENT D6136001 20120430 D083D613600100001 BIB 12 50 D613600100002 TITLE Evidence of quasifission in the 16O+238U reaction at D613600100003 sub-barrier energies D613600100004 AUTHOR (K.Banerjee, T.K.Ghosh, S.Bhattacharya, C.Bhattacharya,D613600100005 S.Kundu, T.K.Rana, G.Mukherjee, J.K.Meena, D613600100006 J.Sadhukhan, S.Pal, P.Bhattacharya, K.S.Golda, D613600100007 P.Sugathan, R.P.Singh) D613600100008 INSTITUTE (3INDSAH) P.Bhattacharya - Saha Institute of Nuclear D613600100009 Physics D613600100010 (3INDVEC) K.Banerjee,T.K.Ghosh,S.Bhattacharya, D613600100011 C.Bhattacharya,S.Kundu,T.K.Rana,G.Mukherjee,J.K.Meena,D613600100012 J.Sadhukhan,S.Pal- Variable Energy Cyclotron Centre D613600100013 (3INDNSD) K.S.Golda,P.Sugathan, R.P.Singh - Inter D613600100014 University Accelerator Centre D613600100015 REFERENCE (J,PR/C,83,024605,2011) D613600100016 FACILITY (VDGT,3INDNSD) 15 UD Pelletron Accelerator D613600100017 DETECTOR (MWPC) Two large-area (120 cm2) position-sensitive D613600100018 multiwire proportional counters to detect fission D613600100019 fragments were placed at the folding angle for D613600100020 symmetric fission, at distances of 26 and 41 cm, D613600100021 respectively, from the center of the target on either D613600100022 side of the beam axis. D613600100023 (SIBAR) Beam flux monitoring as well as normalization D613600100024 by two silicon surface barrier detectors placed at D613600100025 +/- 10 degrees. D613600100026 (SCIN) Four liquid-scintillator-based (BC501A) neutron D613600100027 detectors, each of dimension 25 inch2, were used for D613600100028 the detection of neutrons. D613600100029 The neutron detectors were placed outside the D613600100030 scattering chamber at angles of 30,60,90 and 120 deg D613600100031 at a distance of 100 cm from the target. D613600100032 SAMPLE 238U of thickness 150 ug/cm2 on 70 ug/cm2 12C backing D613600100033 and self-supporting 400 ug/cm2 197Au. D613600100034 METHOD (TOF) Time of Flight Technique. D613600100035 The neutron detection thresholds were kept at 100 keVeeD613600100036 by calibrating the detectors with a standard gamma D613600100037 source. D613600100038 Neutron TOF was converted to neutron energy using a D613600100039 prompt gamma peak in the TOF spectrum as a time D613600100040 reference. D613600100041 The efficiency correction for the neutron detector was D613600100042 performed using the Monte Carlo computer code NEFF. D613600100043 ANALYSIS Fission events belonging to Gaussian centred at ~165 D613600100044 deg were identified as fusion-fission (FF)+ D613600100045 Quasifission (QF) events and considered for data D613600100046 analysis D613600100047 ERR-ANALYS (DATA-ERR) No information on source of uncertainties D613600100048 STATUS (TABLE) Data received from authors D613600100049 HISTORY (20120403C) RANJITA MANDAL D613600100050 (20120409R) Data received from K.Banerjee by e-mail D613600100051 (20120430U) BL+On. Finalized. D613600100052 ENDBIB 50 0 D613600100053 NOCOMMON 0 0 D613600100054 ENDSUBENT 53 0 D613600199999 SUBENT D6136002 20120430 D083D613600200001 BIB 2 2 D613600200002 REACTION (92-U-238(8-O-16,F),,NU/DA/DE,LF+HF/N) D613600200003 STATUS (TABLE) Plotted in Fig.5 of Phys.Rev.C83(2011)024605 D613600200004 ENDBIB 2 0 D613600200005 COMMON 1 3 D613600200006 ANG D613600200007 ADEG D613600200008 165. D613600200009 ENDCOMMON 3 0 D613600200010 DATA 4 45 D613600200011 EN E DATA DATA-ERR D613600200012 MEV MEV P/FS/MEVSR P/FS/MEVSR D613600200013 85. 1.25 0.0897 0.00779 D613600200014 85. 1.75 0.10336 0.00813 D613600200015 85. 2.25 0.09648 0.00781 D613600200016 85. 2.75 0.07892 0.00679 D613600200017 85. 3.25 0.06579 0.006 D613600200018 85. 3.75 0.04926 0.00525 D613600200019 85. 4.25 0.0491 0.00523 D613600200020 85. 4.75 0.02998 0.00399 D613600200021 85. 5.25 0.02777 0.00376 D613600200022 85. 5.75 0.01781 0.003 D613600200023 85. 6.25 0.01895 0.00302 D613600200024 85. 6.75 0.01012 0.00217 D613600200025 89. 0.75 0.15664 0.00543 D613600200026 89. 1.25 0.13446 0.0054 D613600200027 89. 1.75 0.13247 0.00521 D613600200028 89. 2.25 0.11708 0.00487 D613600200029 89. 2.75 0.11063 0.00455 D613600200030 89. 3.25 0.09886 0.00417 D613600200031 89. 3.75 0.07327 0.00363 D613600200032 89. 4.25 0.06524 0.00341 D613600200033 89. 4.75 0.05878 0.00316 D613600200034 89. 5.25 0.03623 0.00243 D613600200035 89. 5.75 0.03537 0.00239 D613600200036 89. 6.25 0.02726 0.00205 D613600200037 89. 6.75 0.01585 0.00154 D613600200038 89. 7.25 0.01391 0.0014 D613600200039 89. 7.75 0.01045 0.00122 D613600200040 89. 8.25 0.01203 0.00129 D613600200041 89. 8.75 0.00631 9.21762E-4 D613600200042 89. 9.25 0.00474 8.32774E-4 D613600200043 89. 9.75 0.00464 8.00523E-4 D613600200044 100. 1.25 0.1753 0.01711 D613600200045 100. 1.75 0.162 0.016 D613600200046 100. 2.25 0.13995 0.01477 D613600200047 100. 2.75 0.13462 0.01394 D613600200048 100. 3.25 0.10155 0.01172 D613600200049 100. 3.75 0.08343 0.01074 D613600200050 100. 4.25 0.07294 0.01002 D613600200051 100. 4.75 0.04445 0.00764 D613600200052 100. 5.25 0.04336 0.00739 D613600200053 100. 5.75 0.04603 0.00758 D613600200054 100. 6.25 0.02651 0.00562 D613600200055 100. 6.75 0.02401 0.00525 D613600200056 100. 7.75 0.014 0.00393 D613600200057 100. 8.25 0.02011 0.00464 D613600200058 ENDDATA 47 0 D613600200059 ENDSUBENT 58 0 D613600299999 SUBENT D6136003 20120430 D083D613600300001 BIB 2 2 D613600300002 REACTION (79-AU-197(8-O-16,F),,NU/DA/DE,LF+HF/N) D613600300003 STATUS (TABLE) Plotted in Fig.5 of Phys.Rev.C83(2011)024605 D613600300004 ENDBIB 2 0 D613600300005 COMMON 2 3 D613600300006 EN ANG D613600300007 MEV ADEG D613600300008 90.5 165. D613600300009 ENDCOMMON 3 0 D613600300010 DATA 3 17 D613600300011 E DATA DATA-ERR D613600300012 MEV P/FS/MEVSR P/FS/MEVSR D613600300013 0.75 0.11403 0.00785 D613600300014 1.25 0.10831 0.00822 D613600300015 1.75 0.10887 0.00801 D613600300016 2.25 0.08989 0.00723 D613600300017 2.75 0.07823 0.00649 D613600300018 3.25 0.06192 0.00559 D613600300019 3.75 0.04243 0.00468 D613600300020 4.25 0.03219 0.00407 D613600300021 4.75 0.02155 0.00325 D613600300022 5.25 0.01962 0.00304 D613600300023 5.75 0.01267 0.00243 D613600300024 6.25 0.01232 0.00234 D613600300025 6.75 0.01095 0.00217 D613600300026 7.25 0.00534 0.00147 D613600300027 7.75 0.00428 0.00133 D613600300028 8.25 0.00314 0.00112 D613600300029 9.25 0.00258 0.00104 D613600300030 ENDDATA 19 0 D613600300031 ENDSUBENT 30 0 D613600399999 SUBENT D6136004 20120430 D083D613600400001 BIB 3 5 D613600400002 REACTION (92-U-238(8-O-16,F),,NU) D613600400003 Total neutron multiplicity D613600400004 MISC-COL (MISC1) Pre-scission neutron multiplicities D613600400005 (MISC2) Post-scission neutron multiplicities D613600400006 STATUS (TABLE) Plotted in Fig.6 of Phys.Rev.C83(2011)024605 D613600400007 ENDBIB 5 0 D613600400008 NOCOMMON 0 0 D613600400009 DATA 7 3 D613600400010 EN DATA DATA-ERR MISC1 MISC1-ERR MISC2 D613600400011 MISC2-ERR D613600400012 MEV PRT/FIS PRT/FIS PRT/FIS PRT/FIS PRT/FIS D613600400013 PRT/FIS D613600400014 100. 4.42 0.42426 1.96 0.4 2.46 D613600400015 0.1 D613600400016 89. 3.62 0.20616 1.44 0.45 2.18 D613600400017 0.1 D613600400018 85. 2.46 0.51962 1.1 0.5 1.36 D613600400019 0.1 D613600400020 ENDDATA 10 0 D613600400021 ENDSUBENT 20 0 D613600499999 ENDENTRY 4 0 D613699999999