Reaction mechanisms in the6Li+52Cr system

Bhawna Pandey,S.V Suranarayana,P.M Prajapati,D Patel,V.V Desai,Cvs Rao,T.K Basu,Alok Saxena,S Jakhar,H Kumar,B.K Nayak

doi:10.1051/epjconf/20158600031

Abstract

Reactions induced by the weakly bound 6 Li projectile interacting with the intermediate mass target 52 Cr are investigated. The choice of this particular reaction in our study is because it is proposed as a surrogate reaction ( 6 Li( 52 Cr, d) 56 Fe*) for the measurement of 55 Fe(n,p) reaction cross-section, which has been found to be very important in fusion reactor studies. All the conditions which have to be satisfied for using the surrogate method have been checked. The energy of 6 Li beam is selected in a way so as to get equivalent neutron energy in the region of 9-14 MeV, which is of primary interest in fusion reactor application. In the present work, statistical model calculations PACE (Projection-Angular-Momentum-Coupled-Evaporation), ALICE and Continuum-Discretized-Coupled-Channel (CDCC: FRESCO) have been used to provide information for the 6 Li + 52 Cr system and the respective contributions of different reaction mechanisms. The present theoretical work is an important step in the direction towards studying the cross-section of the 55 Fe(n, p) 55 Mn reaction by surrogate method.

Highlights

Studies of interactions of weakly bound nuclei with intermediate mass targets are of immense importance in different applications like nuclear astrophysics, production of medical radio-isotopes and fusion reactor applications
This possibility affects the dynamics of fusion reaction (6Li + 52Cr) due to the fact that a part of the incoming flux may be lost from the entrance channel before over coming the fusion barrier and, one of the fragments removed from the projectile may fuse leading to an important InCompleteFusion (ICF) or Transfer Reaction (TR) contribution
The absorption cross-section is the sum of complete fusion (CF), Incomplete Fusion (ICF) and Transfer Reaction (TR) as shown in Equation (7)

Summary

Introduction

Studies of interactions of weakly bound nuclei with intermediate mass targets are of immense importance in different applications like nuclear astrophysics, production of medical radio-isotopes and fusion reactor applications. Surrogate method, which is an indirect way of determining crosssections for nuclear reactions that proceed through a compound nucleus, is a promising method for the measurement of neutron induced cross-sections of such nuclides [3] This method has an advantage that the target material required for the experiment is stable and the compound nucleus is formed via the interaction of light charged particles This particular study is performed keeping in mind that the proposed reaction as a surrogate of the 55Fe (t1/2 = 2.73 years) is one of the radio-nuclides which is produced in large quantities inside the fusion reactor via the. The equivalent neutron energy corresponding to 33MeV lithium-6 is 14.09 MeV

Theoretical model calculations

Conclusions