A Study of Complete and Incomplete Reactions of $^{12}$C + $^{169}$Tm System at Energy Range $\approx$ 4.16-7.5 Mev/Nucleon

TL;DR

This study measures excitation functions of various nuclear reactions involving $^{12}$C and $^{169}$Tm at energies around 4.16-7.5 MeV/nucleon, comparing experimental data with theoretical predictions to understand fusion mechanisms.

Contribution

It provides experimental excitation functions for multiple reaction channels and compares them with PACE4 predictions, highlighting discrepancies in alpha-emitting channels and suggesting projectile breakup effects.

Findings

Non-alpha channels agree with PACE4 predictions

Alpha-emitting channels show higher experimental cross sections

Projectile breakup influences alpha emission in fusion reactions

Abstract

In this paper an attempt was to measure, the excitation functions of $^{169}$Tm($^{12}$C, 4n)$^{177}$Re, $^{169}$Tm($^{12}$C, 5n)$^{176}$Re, $^{169}$Tm($^{12}$C, $\alpha$n)$^{176}$Ta, $^{169}$Tm($^{12}$C, $\alpha$2n)$^{175}$Ta , $^{169}$Tm($^{12}$C, $\alpha$3n)$^{174}$Ta , $^{169}$Tm($^{12}$C, $\alpha$4n)$^{173}$Ta, and $^{169}$Tm($^{12}$C, 2$\alpha$2n)$^{171}$Lu reaction channels populated in the interaction of $^{12}$C projectile with $^{169}$Tm target were considered in order to investigate the mechanisms of complete and incomplete fusion reactions. The theoretically predicted excitation functions using PACE4 code were compared with the previously measured excitation functions. For non alpha emitting channels cross section values predicted by PACE4 in general were found to be in good agreement with the experimentally measured values. However, for alpha-emitting channels the measured cross-section values were found to be higher than the values predicted by PACE4. The observed disagreement may be credited to projectile break up in the vicinity of nn interaction. Keywords: alpha emitted, CF reaction, excitation functions, heavy ion fusion, incomplete fusion reaction, non alpha emitted