Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1971
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1971ap%26ss..10..291c&link_type=abstract
Astrophysics and Space Science, Volume 10, Issue 2, pp.291-308
Astronomy and Astrophysics
Astrophysics
8
Scientific paper
The reaction rates for the proton-proton reaction and the related electron capture reaction in a strongly magnetized relativistic electron gas of arbitrary degree of degeneracy are computed. The proton-proton reaction rates are unaffected by the presence of the magnetic field for field strengths up to the critical valueH q =m 2 c 3/eħ=4.414×1013G. For fields greater thanH q , the proton-proton reaction rates are enhanced linearly with Θ (Θ=H/H q ). The PeP reaction is investigated in detail for a wide range of temperatures, densities and magnetic field strengths that are of interest. The main results are as follows: In the non-degenerate regime the reaction rates are significantly reduced for high temperatures (T 9≳5) and low fields (Θ≲1). For instance, ℛpep(H)=0.04 ℛpep(O) at Θ=10-3,T 9=10. For relatively high fields (Θ>1) and low temperatures (T 9≲2), the reaction rates are enhanced approximately linearly with Θ. In the complete degenerate regime the reaction rates are reduced up to one-third of the field-free value for moderate densities (ϱ6/μe≲10). At high densities (ϱ6/μe≳10) the reaction rates are unaffected by the magnetic field.
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