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Mass measurements at JYFLTRAP for novae and type I X-ray burst nucleosynthesis

Laetitia Canete (University of Jyväskylä)

14h00 GANIL room beta

a coffee will be served 15mn before


Novae and type I X-ray bursts are both consequences of a thermonuclear runaway in close binary star systems. Masses of nuclei involved in the nuclear reaction network are one of key inputs to achieve detailed nucleosynthesis studies of novae and X-ray bursts. At the University of Jyväskylä, the double Penning trap setup JYFLTRAP has been used for high-precision mass measurements of 25Al, 30P and 31Cl. The proton capture rate of 25Al(p,γ)26Si reaction is important for estimating the contribution of classical novae to the amount of galactic 1809 keV γ-rays.  The long beta-decay half-life of 30P in ONe novae constrains the route to heavy elements to go through 30P(p,γ)31S reaction. The rate of 30P(p,γ)31S reaction is also important for estimating the abundance of 30Si produced in the process. In type I X-ray bursts, 30S is predicted to be a waiting point in the rapid proton capture process. At typical XRBs temperatures, the continuation of the process beyond 30S depends sensitively on the ratio of the proton capture on 30S to the photodisintegration of 31Cl.
In this talk, the experimental results from JYFLTRAP related to novae and type I X-ray burst nucleosynthesis will be discussed.
This talk and visit has been supported by the bilateral mobility grant from the Institut Français in Finland, the Embassy of France in Finland, the French Ministry of Higher Education and Research and the Finnish Society of Science and Letters.
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