Coulomb Dissociation Of Proton-Rich Nuclei {sup 23}Al and {sup 27}P And Their Implications

Journal Article · Fri Nov 30 04:00:00 EST 2007 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2827265· OSTI ID:21039470

Yoneda, Ken-ichiro ^[1]

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1. RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)

Two astrophysically important reactions, {sup 22}Mg(p,{gamma}){sup 23}Al and {sup 26}Si(p,{gamma}){sup 27}P, were studied experimentally by using the Coulomb dissociation of proton-rich nuclei {sup 23}Al and {sup 27}P. The radiative widths determined from the cross sections suggest that the {beta}{sup +} decay of {sup 22}Mg is favored over the {sup 22}Mg(p,{gamma}){sup 23}Al reaction while {sup 26}Si(p,{gamma}){sup 27}P reaction is faster than the {beta}{sup +} decay of {sup 26}Si around the peak temperature of heavy novae. The measured radiative widths are consistent with the theoretical values used in the network calculations of nucleosynthesis, therefore providing confirmation that the theoretical stories of nucleosynthesis do not require any change in these sites of the reaction chains.

• OSTI ID: 21039470
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 961; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALUMINIUM 23
BETA DECAY
COULOMB EXCITATION
CROSS SECTIONS
MAGNESIUM 22
NOVAE
NUCLEOSYNTHESIS
PHOSPHORUS 27
PROTON REACTIONS
PROTONS
SILICON 26