alpha decay of the excited states in C-12 at 7.65 and 9.64 MeV

作者：Manfredi J^*; Charity R J; Mercurio K; Shane R; Sobotka L G; Wuosmaa A H; Banu A; Trache L; Tribble R E

来源：Physical Review C, 2012, 85(3): 037603.

DOI：10.1103/PhysRevC.85.037603

High-resolution triple-alpha coincidence data were used to reconstruct the decay of the excited states in C-12 at 7.65 MeV (J(pi) = 0(+)) and 9.64 MeV (J(pi) = 3(-)). These data are consistent with the alpha-particle decay of both levels proceeding exclusively through Be-8(g.s.). In the first of these cases, the Hoyle state, an upper limit of 0.45% (at the 99.75% confidence level) is set for a component producing three nearly equal-energy alpha particles.

• 出版日期2012-3-26