- Spectroscopy of Proton-rich Nuclei in Explosive Nuclear Astrophysics
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Transcript of - Spectroscopy of Proton-rich Nuclei in Explosive Nuclear Astrophysics
- Spectroscopy of Proton-rich Nuclei in Explosive Nuclear Astrophysics
PJ Woods, University of Edinburgh
on behalf of ANL, Edinburgh, York collaboration
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IGNITIONREACTIONS
NOVA, X-RAY Bursts,Type I SN
rp process
25,6Al(p,)26,7Si reactions and the abundance of the cosmic gamma ray emitter 26Al
The FMA at ATLAS
GammaSphere Coupled to the FMA
16O + 12C -> 26Si + 2n
Gate on 2+ ->0+ transition in 26Si
New results on gamma decaying states above proton thresholdin 27Si D Seweryniak, PJW et al., data being analysed
15O(,)19Ne reaction rate
First measurements of lifetimes of key astrophysical resonances in 19Ne made by Notre Dame Group
17 O(3 He, n –gamma)19Ne reaction used at Notre Dame tomake 1st measurement of lifetime of astrophysicalresonance, WP Tan et al. PRC 72 041302 (2005)
(also Kanungo et al. PRC 74 045803 (2006))
12 C + 10 B -> 19 Ne + 1p2n
Decays from 4.03 and 4.38 MeV states in 19Ne
Gamma energy as a function of gammasphere angle
Abundance curve of the elementsab
unda
nce
Atomic number
Fe
“The 11 Greatest Unanswered Questions of Physics”based on National Academy of Science Report, 2002
[Committee for the Physics of the Universe (CPU)]
How were the elements from iron to uranium made?
R-process nuclei will be synthesised by the fastfission of 1 GeV/u 238U ions at the new FAIR facility
Advanced Implantation Detection Array (AIDA)- will use new ASIC instrumented DSSDs
238U fission fragmentsfrom new super-FRS
N
DESPEC collaboration
Summary
New data on 26,7Si resonances (and 24 Al)
Analysis in progress on Lifetimes of 19 Ne
Resonances
New AIDA project underway for FAIR
decay measurements on Super-FRS