Analyzing power measurement for the $^{14}\mathrm{N}(\stackrel{P\vec}{p},\ensuremath{\gamma})^{15}\mathrm{O}$ reaction at astrophysically relevant energies

Analyzing power measurement for the ${}^{14}N (\vec{p}, γ) {}^{15}O$ reaction at astrophysically relevant energies

S. O. Nelson, M. W. Ahmed, B. A. Perdue, K. Sabourov, A. L. Sabourov, A. P. Tonchev, R. M. Prior, M. Spraker, and H. R. Weller

Phys. Rev. C 68, 065804 – Published 18 December 2003

Abstract

The ${}^{14}N (\vec{p}, γ) {}^{15}O$ reaction has been investigated by measuring the angular distributions of its cross section and analyzing power using a $270 − keV$ polarized proton beam. Calculations using a direct-capture-plus-resonance model were compared with the data. The results indicate the presence of $γ$ transition amplitudes which were not considered in previous extrapolations of the astrophysical $S$ factor to low energies. The impact on the zero-energy $S$ factor of the ${}^{14}N (\vec{p}, γ) {}^{15}O$ reaction is discussed.

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Received 18 August 2003

DOI:https://doi.org/10.1103/PhysRevC.68.065804

Authors & Affiliations

S. O. Nelson^1,2, M. W. Ahmed^1,2, B. A. Perdue^1,2, K. Sabourov^1,2, A. L. Sabourov^1,2, A. P. Tonchev^1,2, R. M. Prior^3,2, M. Spraker^3,2, and H. R. Weller^1,2

¹Department of Physics, Duke University, Durham, North Carolina 27708, USA
²Triangle Universities Nuclear Laboratory, Duke Station, Durham, North Carolina 27708, USA
³Department of Physics, North Georgia College and State University, Dahlonega, Georgia 30597, USA

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Vol. 68, Iss. 6 — December 2003

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Physical Review C

covering nuclear physics

Analyzing power measurement for the ${}^{14}N (\vec{p}, γ) {}^{15}O$ reaction at astrophysically relevant energies

S. O. Nelson, M. W. Ahmed, B. A. Perdue, K. Sabourov, A. L. Sabourov, A. P. Tonchev, R. M. Prior, M. Spraker, and H. R. Weller

Phys. Rev. C 68, 065804 – Published 18 December 2003

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Physical Review C

covering nuclear physics

Analyzing power measurement for the N14(p⃗,γ)O15 reaction at astrophysically relevant energies

S. O. Nelson, M. W. Ahmed, B. A. Perdue, K. Sabourov, A. L. Sabourov, A. P. Tonchev, R. M. Prior, M. Spraker, and H. R. Weller

Phys. Rev. C 68, 065804 – Published 18 December 2003

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Analyzing power measurement for the ${}^{14}N (\vec{p}, γ) {}^{15}O$ reaction at astrophysically relevant energies