Abstract
Nonthermal nuclear processes in the core of the Sun that are induced by fast particles appearing as nonthermalized products of exothermic reactions are discussed. Among other things, properties of 8.7-MeV alpha particles originating from the reaction p + 7Li → 2α are studied, and their effect on the balance of the processes p + 17O ai α + 14N, which close the CNO-II cycle, is determined. It is shown that the effective temperature of fast alpha particles is approximately 1000 times as high as the temperature of the plasma in the Sun’s core and that, under some specific conditions, the rate of the reverse reaction α + 14N → p + 17O may be one to two orders of magnitude higher than the rate of the forward reaction p + 17O → α + 14N.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
V. T. Voronchev et al., Phys. Rev. D 85, 067301 (2012).
Y. Nakao, K. Tsukida, and V. T. Voronchev, Phys. Rev. D 84, 063016 (2011).
V. T. Voronchev, Y. Nakao, and M. Nakamura, Astrophys. J. 725, 242 (2010).
D. D. Clayton et al., Astrophys. J. 199, 494 (1975).
J. N. Bahcall and R. Davis, Jr., Science 191, 264 (1976).
G. E. Kocharov, Preprint FTI No. 298 (Ioffe Phys.-Tech. Inst., Leningrad, 1972).
J. N. Bahcall, Neutrino Astrophysics (Cambridge, Cambridge University Press, 1989).
H. A. Bethe, Phys. Rev. 55, 434 (1939).
J. N. Bahcall, M. C. Gonzalez-Garcia, and C. Peña-Garay, Phys. Rev. Lett. 90, 131301 (2003).
W. Haxton and A. Serenelli, Astrophys. J. 687, 678 (2008).
E. G. Adelberger et al., Rev. Mod. Phys. 83, 195 (2011); 70, 1265 (1998).
A. Kopylov and V. Petukhov, Prog. Part. Nucl. Phys. 64, 423 (2010).
V. T. Voronchev, Y. Nakao, and M. Nakamura, J. Phys. G 38, 015201 (2011).
C. Angulo et al., Nucl. Phys. A 656, 3 (1999).
B. Paxton et al., Astrophys. J. Suppl. Ser. 192, 3 (2011).
V. T. Voronchev, Y. Nakao, and M. Nakamura, JCAP 0805, 010 (2008).
Y. Nakao et al., Fusion Sci. Technol. 56, 391 (2009).
D. V. Sivukhin, Vopr. Teor. Plazmy, No. 4, 81 (1964).
C. Estrada-Mila et al., Phys. Plasmas 13, 112303 (2006).
G. Terwagne et al., J. Appl. Phys. 104, 084909 (2008).
P. Wei et al., Nucl. Instrum. Methods Phys. Res. B 249, 85 (2006).
G. D. Mea et al., Nucl. Instrum. Methods Phys. Res. B 240, 803 (2005).
H. Xu et al., Nucl. Instrum. Methods Phys. Res. B 149, 390 (1999).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © V.T. Voronchev, 2015, published in Yadernaya Fizika, 2015, Vol. 78, No. 6, pp. 514–518.
Rights and permissions
About this article
Cite this article
Voronchev, V.T. On nonthermal processes in the core of the Sun. Phys. Atom. Nuclei 78, 477–481 (2015). https://doi.org/10.1134/S1063778815030126
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1063778815030126