Speaker
Description
Breakup reactions involving loosely bound stable nuclei with prominent cluster structures like $^{6,7}$Li have been widely studied [1-3]. Similar studies on radioactive nuclei are comparatively lesser in number due to issues of availability and beam intensities. Reaction studies of the $^7$Be nucleus on $^{12}$C target reported very few coincidence events from breakup [4]. Similar results were reported on heavier targets like $^{58}$Ni and $^{208}$Pb [5-6]. It was concluded that though $^7$Be has a lower breakup threshold than $^7$Li, its transfer channels are more prominent than breakup [4]. To make a detailed study of the transfer and breakup channels of $^7$Be on $^{12}$C target, we carried out an experiment at HIE-ISOLDE with a 5 MeV/u $^7$Be beam [7-8]. The $^7$Be breakup fragments $\alpha$ and $^3$He are detected in coincidence, and the plots of relative energy and opening angle of the breakup fragments confirm significant counts from both direct and sequential breakup [9]. The relevant Monte Carlo simulations were carried out with NPTool [10]. Detailed theoretical calculations on the breakup data are in progress. The comparison of the breakup of $^7$Be with its mirror nucleus $^7$Li is also important in reaction studies as we move from the line of stability towards the drip lines.
References :
[1] A. C. Shotter et al., Phys. Rev. Lett. 46, 12-15 (1981)
[2] G. Baur, H. Rebel, Annual Review of Nuclear and Particle Science 46 (1), 321-350 (1996)
[3] J.J. Kolata, et al., Eur. Phys. J. A 52 (2016) 123
[4] H. Amro et al., Eur. Phys. J. ST 150, 1 (2007)
[5] M. Mazzocco et al., EPJ Web of Conferences 163 , 00035 (2017)
[6] M. Mazzocco et al., Phys. Rev. C 92, 024615 (2015)
[7] Sk M. Ali et al., Phys. Rev. Lett. 128, 252701 (2022)
[8] K. Kundalia et al., Phys. Lett. B 833, 137294 (2022)
[9] R. Mitra et al., EPJ Web of Conferences 297, 02005 (2024)
[10] A. Matta, http://nptool.org
