Screened alpha decay in dense astrophysical plasmas and magnetars

Details Screened alpha decay in dense astrophysical plasmas and magnetars Screened alpha decay in dense astrophysical plasmas and magnetars

2003-02-10

arxiv.org/abs/nucl-th/0302021v2

Phys. Rev. C 68, 015804 (2003)

Physics

Nuclear Physics

Nuclear Theory

15 RevTex pages, 3 ps figures (minor revision). This work was presented during the conference ''Supernova, 10 years of SN1993J

Scientific paper

10.1103/PhysRevC.68.015804

This paper shows that ultrastrong magnetic fields (such as those of magnetars) and dense astrophysical plasmas can reduce the half life of alpha decaying nuclei by many orders of magnitude. In such environments the conventional Geiger-Nuttall law is modifed so that all half lives are shifted to dramatically lower values. Those effects, which have never been investigated before, may have significant implications on the universal abundances of heavy radioactive elements and the cosmochronological methods that rely on them.

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