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https://www.ias.ac.in/article/fulltext/pram/088/02/0029

Direct nuclear reactions; heavy cluster knockout; structure of $^{24}$Mg(g.s); C–C optical potential.

In the backdrop of many models, the heavy cluster structure of the ground state of $^{24}$Mg has been probed experimentally for the first time using the heavy cluster knockout reaction $^{24}$Mg($^{12}$C, $^{212}$C)$^{12}$C in thequasifree scattering kinematic domain. In the ($^{12}$C, $^{212}$C) reaction, the direct $^{12}$C-knockout cross-section was found to be very small. Finite-range knockout theory predictions were much larger for ($^{12}$C, 212C) reaction,indicating a very small $^{12}$C−$^{12}$C clustering in $^{24}$Mg(g.s.). Our present results contradict most of the proposed heavy cluster ($^{12}$C+$^{12}$C) structure models for the ground state of $^{24}$Mg.

B N JOSHI¹ ARUN K JAIN¹ D C BISWAS¹ B V JOHN¹ Y K GUPTA¹ L S DANU¹ R P VIND¹ G K PRAJAPATI¹ S MUKHOPADHYAY¹ A SAXENA¹

1. Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India

Published

16 February 2017

Manuscript received

16 February 2016

Manuscript revised

5 May 2016

Accepted

17 June 2016

Early published

4 January 2017