Very Low Energy Protons From The Beta Decay Of Proton Rich Nuclei For Nuclear Astrophysics

Details Very Low Energy Protons From The Beta Decay Of Proton Rich Nuclei For Nuclear Astrophysics Very Low Energy Protons From The Beta Decay Of Proton Rich Nuclei For Nuclear Astrophysics

Nov 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1304..415s&link_type=abstract

EXOTIC NUCLEI AND NUCLEAR/PARTICLE ASTROPHYSICS (III): From Nuclei to Stars. AIP Conference Proceedings, Volume 1304, pp. 415-4

Astronomy and Astrophysics

Astrophysics

Beta-Decay, Telescopes, Sensors, Weak-Interaction And Lepton Aspects, Astronomical And Space-Research Instrumentation, Gas-Filled Counters: Ionization Chambers, Proportional, And Avalanche Counters

Scientific paper

The MARS group at TAMU has developed a new experimental technique to measure very low energy protons from β-delayed proton-decay of proton-rich nuclei produced and separated with the MARS recoil spectrometer at TAMU. Recently we have investigated the β-delayed p-decays of 23Al [1], and 31Cl [2], and obtained information on the resonances in the 22Na(p,γ)23Mg and 30P(p,γ)31S reactions, respectively. These reactions are important in explosive H-burning in Novae [3]. Recently an experiment looking at the β-delayed p-decay of 20Mg was also done in order to obtain information on resonances in the 19Ne(p,γ)20Na reaction. A simple setup consisting of a telescope made of a thin double sided Si strip detector (p-detector) backed or sandwiched between two thick Si detectors (β-detectors) was designed. We studied different W1 and BB2 p-detectors made by MSL, and found that the thinner detectors with a small cell size are best to measure proton energies as low as 2-300 keV.

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