The high-lying $^6$Li levels at excitation energy around 21 MeV

TL;DR

This study investigates high-lying excited states of $^6$Li around 21 MeV using a kinematically complete experiment, identifying two resonances consistent with previous analyses and comparing results with theoretical models.

Contribution

First experimental observation of two resonances near 21 MeV in $^6$Li using a complete kinematic approach, providing data for theoretical comparison.

Findings

Identified two resonances at 21.30 and 21.90 MeV in $^6$Li.

Resonances are consistent with previous gamma-ray analysis.

Data agree with RGM and CSRGM theoretical calculations.

Abstract

The $^3$H+$^3$He cluster structure in $^6$Li was investigated by the $^3$H($\alpha$,$^3$H $^3$He)n kinematically complete experiment at the incident energy $E_\alpha$ = 67.2 MeV. We have observed two resonances at $E_x^*$ = 21.30 and 21.90 MeV which are consistent with the $^3$He($^3$H, $\gamma$)$^6$Li analysis in the Ajzenberg-Selove compilation. Our data are compared with the previous experimental data and the RGM and CSRGM calculations.