Jeffery Blackmon
(Louisiana State University)
21/06/2017, 11:20
Explosive scenarios in astrophysics: observations, theory, and experiments
Invited talk
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Dr
Oliver Kirsebom
(Department of Physics and Astronomy, Aarhus University)
21/06/2017, 11:50
Stellar evolution and nucleosynthesis
Oral
While the C-12(alpha,gamma)O-16 reaction plays a central role in nuclear astrophysics, the cross section is too small at the energies relevant to stellar helium burning to be directly measured in the laboratory. The beta-delayed alpha spectrum of N-16 can be used to constrain the astrophysical S-factor, but with this approach the S-factor becomes strongly correlated with the assumed...
Dr
François de Oliveira Santos
(GANIL)
21/06/2017, 12:10
Stellar evolution and nucleosynthesis
Oral
The existence of the Hoyle state is crucial for the nucleosynthesis of the chemical elements heavier than lithium. This state has been the subject of many theoretical studies and philosophical discussions (anthropic principle). The existence of this remarkable state could be explained by the Ikeda conjecture [1,2]. The latter can be formulated simply: The coupling to a nearby cluster decay...
Ms
Ralitsa Ilieva
(University of Surrey)
21/06/2017, 12:30
Explosive scenarios in astrophysics: observations, theory, and experiments
Oral
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Ms
Ruchi Garg
(University of York)
21/06/2017, 12:50
Oral
We present the first clear observation of the 2+ rotational excitation of the Hoyle state in a beta decay experiment. Coincident detection of β-3α particles from the cascade 12N(β)12C(α1)8Be(α2)α3 have been used to obtain β-α1 angular correlation, which then has been used to determine the strength of the 2+ state relative to that of the 0+ in the 9-12 MeV energy region. The experiment has been...
Dr
Alison Laird
(University of York)
21/06/2017, 13:10
Oral
While core collapse supernovae have long captured the attention of
physicists and astronomers, surprisingly little is currently known about
the nature of the explosion mechanism. This is due to the complexity of
the explosion, the large computational requirements for even 2D
simulations, and the lack of precise nuclear physics inputs to these
models. One of the few methods by which this...
