Effect of clustering on the emission of light charged particles

• Published in: The European physical journal. A, Hadrons and nuclei Hadrons and nuclei, 2018-04, Vol.54 (4), p.1-8, Article 63
• Main Authors: Kundu, Samir, Bhattacharya, C., Rana, T. K., Bhattacharya, S., Pandey, R., Banerjee, K., Roy, Pratap, Meena, J. K., Mukherjee, G., Ghosh, T. K., Mukhopadhyay, S., Saha, A. K., Sahoo, J. K., Mandal Saha, R., Srivastava, V., Sinha, M., Asgar, Md. A.
• Format: Article
• Language: English
• Subjects: Aluminum; Asymmetry; Charged particles; Clustering; Deformation mechanisms; Emission; Energy spectra; Formability; Hadrons; Heavy Ions; Nuclear Fusion; Nuclear Physics; Particle and Nuclear Physics; Physics; Physics and Astronomy; Regular Article - Experimental Physics; Rotating liquids; Spectral emittance; Statistical models
• ISSN: 1434-6001; 1434-601X
• DOI: 10.1140/epja/i2018-12494-5

. Energy spectra of light charged particles emitted in the reaction p + 27 Al → 28 Si * have been studied and compared with statistical model calculation. Unlike 16 O + 12 C where a large deformation was observed in 28 Si * , the energy spectra of α -particles were well explained by the statistical model calculation with standard “deformability parameters” obtained using the rotating liquid drop model. It seems that the α -clustering in the entrance channel causes extra deformation in 28 Si * in the case of 16 O + 12 C, but the reanalysis of other published data shows that there are several cases where extra deformation was observed for composites produced via non- α -cluster entrance channels also. An empirical relation was found between mass-asymmetry in the entrance channel and deformation, which indicates that along with α -clustering, mass-asymmetry may also affect the emission of a light charged particle.