Speaker
Description
It is well known that many light nuclei exhibit prominent cluster structures, and the $\alpha$ particles play an important role as constituents of the cluster state. Among the cluster states, $\alpha$-condensed states are of great interest because they are analogous to a Bose-Einstein condensate in which all the $\alpha$ clusters are condensed into the single lowest-energy orbit. The theoretical calculation by T. Yamada $\textit{et al.}$ predicted that the $\alpha$-condensed states could exist up to $A=40$. However, the $\alpha$-condensed states in $A≥16$ have never been experimentally established. Therefore, we conducted an experiment to search for the $\alpha$-condensed state in $^{24}\textrm{Mg}$ by measuring the $^{12} \textrm{C} + ^{12} \textrm{C}$ scattering with AT-TPC developed at Michigan State University.
This experiment was part of the experiments in the AT-TPC campaign at Research Center for Nuclear Physics, the University of Osaka. In this experiment, a $^{12}\textrm{C}$ beam at $67.7\; \textrm{MeV}$ was injected into AT-TPC filled with iso-$\textrm{C}_4\textrm{H}_{10}$ gas at about $0.1\; \textrm{atm}$. In the present talk, I will report on the experimental setup and data analysis.