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Direct measurement of the 15N(p,gamma)16O total cross section at novae energies

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arxiv 0902.0783 v1 pith:NHWFJSIJ submitted 2009-02-04 nucl-ex astro-ph.SR

D Bemmerer , A Caciolli , R Bonetti , C Broggini , F Confortola , P Corvisiero , H Costantini , Z Elekes
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A Formicola Zs Fulop G Gervino A Guglielmetti C Gustavino Gy Gyurky M Junker B Limata M Marta R Menegazzo P Prati V Roca C Rolfs C Rossi Alvarez E Somorjai O Straniero
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keywords crossgammasectiondirectenergiesmeasurementnovaetotal
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The 15N(p,gamma)16O reaction controls the passage of nucleosynthetic material from the first to the second carbon-nitrogen-oxygen (CNO) cycle. A direct measurement of the total 15N(p,gamma)16O cross section at energies corresponding to hydrogen burning in novae is presented here. Data have been taken at 90-230 keV center-of-mass energy using a windowless gas target filled with nitrogen of natural isotopic composition and a bismuth germanate summing detector. The cross section is found to be a factor two lower than previously believed.

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Cited by 1 Pith paper

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  1. Background in $\gamma$-ray detectors and carbon beam tests in the Felsenkeller shallow-underground accelerator laboratory

    nucl-ex 2019-08 conditional novelty 4.0 of 10

    The Felsenkeller shallow-underground laboratory achieves gamma-ray backgrounds low enough, and carbon beam currents high enough, to make a sensitive measurement of carbon-12(alpha,gamma)oxygen-16 appear feasible.

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