Strengths of the resonances at 436, 479, 639, 661, and 1279 keV in the Ne 22 (p,γ) Na 23 reaction

Rosanna Depalo, Francesca Cavanna, Federico Ferraro, Alessandra Slemer, Tariq Al-Abdullah, Shavkat Akhmadaliev, Michael Anders, Daniel Bemmerer, Z. Elekes, Giovanni Mattei, Stefan Reinicke, Konrad Schmidt, Carlo Scian, Louis Wagner

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Abstract

The Ne22(p,γ)Na23 reaction is included in the neon-sodium cycle of hydrogen burning. A number of narrow resonances in the Gamow window dominate the thermonuclear reaction rate. Several resonance strengths are only poorly known. As a result, the Ne22(p,γ)Na23 thermonuclear reaction rate is the most uncertain rate of the cycle. Here, a new experimental study of the strengths of the resonances at 436, 479, 639, 661, and 1279 keV proton beam energy is reported. The data have been obtained using a tantalum target implanted with Ne22. The strengths ωγ of the resonances at 436, 639, and 661 keV have been determined with a relative approach, using the 479- and 1279-keV resonances for normalization. Subsequently, the ratio of resonance strengths of the 479- and 1279-keV resonances were determined, improving the precision of these two standards. The new data are consistent with, but more precise than, the literature with the exception of the resonance at 661 keV, which is found to be less intense by one order of magnitude. In addition, improved branching ratios have been determined for the gamma decay of the resonances at 436, 479, and 639 keV.

Original languageEnglish
Article number045807
JournalPhysical Review C - Nuclear Physics
Volume92
Issue number4
DOIs
Publication statusPublished - Oct 21 2015

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thermonuclear reactions
reaction kinetics
cycles
tantalum
proton beams
neon
sodium
decay
hydrogen
energy

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Depalo, R., Cavanna, F., Ferraro, F., Slemer, A., Al-Abdullah, T., Akhmadaliev, S., ... Wagner, L. (2015). Strengths of the resonances at 436, 479, 639, 661, and 1279 keV in the Ne 22 (p,γ) Na 23 reaction. Physical Review C - Nuclear Physics, 92(4), [045807]. https://doi.org/10.1103/PhysRevC.92.045807

Strengths of the resonances at 436, 479, 639, 661, and 1279 keV in the Ne 22 (p,γ) Na 23 reaction. / Depalo, Rosanna; Cavanna, Francesca; Ferraro, Federico; Slemer, Alessandra; Al-Abdullah, Tariq; Akhmadaliev, Shavkat; Anders, Michael; Bemmerer, Daniel; Elekes, Z.; Mattei, Giovanni; Reinicke, Stefan; Schmidt, Konrad; Scian, Carlo; Wagner, Louis.

In: Physical Review C - Nuclear Physics, Vol. 92, No. 4, 045807, 21.10.2015.

Research output: Contribution to journalArticle

Depalo, R, Cavanna, F, Ferraro, F, Slemer, A, Al-Abdullah, T, Akhmadaliev, S, Anders, M, Bemmerer, D, Elekes, Z, Mattei, G, Reinicke, S, Schmidt, K, Scian, C & Wagner, L 2015, 'Strengths of the resonances at 436, 479, 639, 661, and 1279 keV in the Ne 22 (p,γ) Na 23 reaction', Physical Review C - Nuclear Physics, vol. 92, no. 4, 045807. https://doi.org/10.1103/PhysRevC.92.045807
Depalo, Rosanna ; Cavanna, Francesca ; Ferraro, Federico ; Slemer, Alessandra ; Al-Abdullah, Tariq ; Akhmadaliev, Shavkat ; Anders, Michael ; Bemmerer, Daniel ; Elekes, Z. ; Mattei, Giovanni ; Reinicke, Stefan ; Schmidt, Konrad ; Scian, Carlo ; Wagner, Louis. / Strengths of the resonances at 436, 479, 639, 661, and 1279 keV in the Ne 22 (p,γ) Na 23 reaction. In: Physical Review C - Nuclear Physics. 2015 ; Vol. 92, No. 4.
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AU - Al-Abdullah, Tariq

AU - Akhmadaliev, Shavkat

AU - Anders, Michael

AU - Bemmerer, Daniel

AU - Elekes, Z.

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AU - Reinicke, Stefan

AU - Schmidt, Konrad

AU - Scian, Carlo

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