Speaker
Description
The triple-alpha process, crucial for the synthesis of carbon-12 in stellar environments, primarily relies on the Hoyle state at 7.654 MeV. While de-excitation dominantly proceeds through radiative decay, particle-induced scattering $^{12}$C(HS)($p$,$p'$)$^{12}$C has been proposed as an additional enhancement channel under high-temperature and high-density conditions. A previous experiment $^{12}$C($p$,$p'$)$^{12}$C(HS) using proton energies up to 2.3 MeV above the threshold demonstrate enhance-ment of the triple-alpha process at stellar temperatures above 1 GK. We propose to extend the ex-plored proton energy range up to 10 MeV above the Hoyle state threshold using the newly devel-oped Active Target TPC for Multiple nuclear physics eXperiments (AToM-X) at the JAEA Tandem facility. This measurement will further verify the enhancement of the triple-alpha process and vali-date the recent predictions by Hauser-Feshbach calculations.
