3rd-INCC

Investigation of the variance of fission product mass distribution in 20Ne + 232Th reaction

19 Sept 2011, 10:15

15m

Paladini (Città del Mare, Terrasini - Palermo - Sicily - Italy)

oral presentation Nuclear Chemistry and Radiochemistry Session 1

Speaker

Suparna Sodaye (Bhabha Atomic Research Centre)

Description

Fission of heavier actinides and trans-actinides through heavy ion reactions is currently an active area of study to investigate contribution from non compound nucleus fission. In addition, there is a contribution from transfer induced fission. In the present work, mass distributions of the fission products produced in 20Ne + 232Th have been measured at Elab=115 and 145 MeV. Self supporting targets of 232Th (thickness ~3 mg/cm2) were bombarded with 20Ne beam from variable energy cyclotron centre, Kolkata, India. The formation cross section of more than 30 fission products have been measured by recoil catcher technique followed by off-line -ray spectrometry. In order to determine the mass distributions, the cross section will be corrected for the charge distribution using appropriate charge distribution parameters for complete fusion fission and transfer induced fission. The variance of the experimental mass distribution resulting from complete fusion-fission of 20Ne + 232Th will be compared with the variance calculated using Random Neck Rupture Model (RNRM). Identification of fission products produced in transfer induced fission and complete fusion fission would also be helpful in the study of mass resolved angular distribution to investigate the contribution from non-compound nucleus fission.