Mechanism of large production rates of <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>α</mi></math> particles in reactions involving weakly bound projectiles

Arati Chavan; S. Rathi; K. Mahata; S. K. Pandit; V. V. Parkar; A. Shrivastava; K. Ramachandran; A. M. Moro; H. Liu; Jin Lei; Sangeeta Dhuri; Satbir Kaur; Prasanna M; Vineet Kumar

doi:10.1103/6n73-4rb7

Mechanism of large production rates of $α$ particles in reactions involving weakly bound projectiles

Arati Chavan ¹, S. Rathi ^1,*, K. Mahata ^2,3, S. K. Pandit ^2,3, V. V. Parkar ^2,3, A. Shrivastava^2,3, K. Ramachandran², A. M. Moro ⁴, H. Liu ⁵ et al.

Jin Lei ⁵, Sangeeta Dhuri ^2,3,†, Satbir Kaur^2,3, Prasanna M.^6,‡, and Vineet Kumar ^2,3

¹Department of Physics, Vivekanand Education Society's College of Arts, Science and Commerce (Autonomous), Mumbai 400071, India
²Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
³Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
⁴Departamento de Física Atómica, Molecular y Nuclear, Facultad de Física, Universidad de Sevilla, Apartado 1065, Sevilla E-41080, Spain
⁵School of Physics Science and Engineering, Tongji University, Shanghai 200092, China
⁶Department of Physics, Rani Channamma University, Belagavi 591156, India

^*Contact author: sarla.rathi@ves.ac.in
^†Present address: Extreme Light Infrastructure - Nuclear Physics, IFIN-HH, 30 Reactorului Street, 077125 Magurele, Romania.
^‡Present address: Department of Physics, Government First Grade College, Honnavara 581334, India.

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Phys. Rev. C 113, 064621 – Published 25 June, 2026

DOI: https://doi.org/10.1103/6n73-4rb7

Abstract

To investigate the mechanism of $α$ -particle production, energy-angle correlations of the emitted $α$ particles have been measured for the ${}^{6}{Li} + {}^{93}{Nb}$ system at energies around the Coulomb barrier. Results of three-body Monte Carlo simulations for breakup are in good agreement with the measured experimental energy-angle correlations. This is in contrast to the observation involving ${}^{7}{Li}$ projectile, where breakup simulation failed to reproduce the experimental data. Comparison of the data with two different semiclassical prescriptions for the optimum $Q$ value leads to conflicting results, so no firm conclusion could be extracted from this comparison. Instead, fully quantum-mechanical calculations, employing the continuum-discretized coupled-channels (CDCC) method for the elastic breakup component and the Ichimura-Austern-Vincent (IAV) for the nonelastic one, reproduce the present experimental data rather well. The present study highlights the complexity of weakly bound projectile interactions and emphasizes the importance of more such studies for a comprehensive understanding.

Physical Review C

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Mechanism of large production rates of $α$ particles in reactions involving weakly bound projectiles

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Mechanism of large production rates of α particles in reactions involving weakly bound projectiles

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Mechanism of large production rates of $α$ particles in reactions involving weakly bound projectiles