D(α, α)D cross-section measurement

[sup 12]C(α,γ)[sup 16]O Thermonuclear Reaction Rate: Present Status And Perspectives

“…Attention should be paid on the non-yet-understood partial disagreement between the phases of the interference pattern between the El and E2 derived from the groundstate angular-distribution and the elastic diffusion measurements analysis [12,14,15]. Results of columns b and c were obtained taking into account the elastic diffusion results considered as more precise by the authors.…”

“…R-matrix calculations were performed using the code ERMA of Kunz [3,4]. They were based, in particular, on these El and E2 capture data, the scattering phases of [14,15], and the data of the f>-delayed a-decay of ^''N [16]. For El a three level fit and for E2 a five level fit were performed [4,13].…”

Review and experiments on nuclear astrophysics

“…At this point it is worthwhile to note that a given nuclear reaction occurring in the stellar plasma can rarely be considered as an isolated interaction. Consider, for example, the species 25 Al at an elevated temperature. It may be destroyed in several different ways: via β + -decay to 25 Mg, via proton capture to 26 Si, via photodisintegration to 24 Mg, and so on.…”

“…Consider, for example, the species 25 Al at an elevated temperature. It may be destroyed in several different ways: via β + -decay to 25 Mg, via proton capture to 26 Si, via photodisintegration to 24 Mg, and so on. On the other hand, 25 Al is produced via the β + -decay of 25 Si, via proton capture on 24 Mg, via photodisintegration of 26 Si, and so on.…”

“…It may be destroyed in several different ways: via β + -decay to 25 Mg, via proton capture to 26 Si, via photodisintegration to 24 Mg, and so on. On the other hand, 25 Al is produced via the β + -decay of 25 Si, via proton capture on 24 Mg, via photodisintegration of 26 Si, and so on. The abundance evolution of 25 Al during the nucleosynthesis is then given by a differential equation that accounts for all destruction and production mechanisms.…”