Nuclear Physics in Astrophysics VIII

Session

RIBs in nuclear astrophysics 2

21 Jun 2017, 11:20

Sala conferenze (Laboratori Nazionali del Sud)

77. Studies of X-ray burst reactions with radioactive ion beams from RESOLUT

Jeffery Blackmon (Louisiana State University)

21/06/2017, 11:20

Explosive scenarios in astrophysics: observations, theory, and experiments

Invited talk

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24. Improved experimental determination of the branching ratio for beta-delayed alpha decay of N-16

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...

28. Cousin of the Hoyle state: Observation of a narrow resonance above 13N+2p threshold

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...

8. Key Resonances in $^35$Ar and their importance for determining the origin of presolar grains

Ms Ralitsa Ilieva (University of Surrey)

21/06/2017, 12:30

Explosive scenarios in astrophysics: observations, theory, and experiments

Oral

% % Nuclear Physics in Astrophysics 8 template for abstract % % Format: LaTeX2e. % % Rename this file to name.tex, where `name' is the family name % of the first author, and edit it to produce your abstract. % \documentstyle[11pt]{article} % % PAGE LAYOUT: % \textheight=9.9in \textwidth=6.3in \voffset -0.85in \hoffset ...

113. Observation of the 2+ rotational excitation of the Hoyle state

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...

97. Measurement of 21Na(α,p)24Mg cross section for the study of 44Ti production in supernovae.

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...