par Suno, Hiroya;Suzuki, Yasunobu;Descouvemont, Pierre
Référence Physical review. C. Nuclear physics, 94, 5, 054607
Publication Publié, 2016
Référence Physical review. C. Nuclear physics, 94, 5, 054607
Publication Publié, 2016
Article révisé par les pairs
Résumé : | We study the triple-α reaction process at low temperatures, which is known to play an important role in stellar physics. The Schrödinger equation for three α particles is solved by using hyperspherical coordinates, while a complex absorbing potential is introduced in order to describe correctly the three-body continuum states. We use an angular-momentum-independent α-α potential and introduce three-body potentials to reproduce the energies of both the Hoyle state and the first 2+ state. The triple-α reaction rate is computed accurately at temperatures from T=0.01 to 10 GK and compared with those available in the literature. Our reaction rate is found to be up to three orders of magnitude larger than the NACRE rate at low temperatures T≈0.01 GK, while we find a reasonable agreement between them at higher temperatures T 0.1 GK. |