Eur. Phys. J. A (2014) 50: 7
https://doi.org/10.1140/epja/i2014-14007-0

Regular Article - Theoretical Physics

Explosive nucleosynthesis at strong magnetic field

¹ Physics Department, Taras Shevchenko National University of Kiev, UA-03022, Bielefeld, Ukraine
² Physics Department, Bielefeld University, D-33615, Bielefeld, Germany

^* e-mail: vkondrat@i.ua

Received: 20 September 2013
Revised: 29 November 2013
Accepted: 11 December 2013
Published online: 30 January 2014

Abstract

The effect of a strong magnetic field on the synthesis of chemical elements is considered at conditions of nuclear statistical equilibrium. The possibility to employ the produced radionuclides to probe the transient ultra-magnetized astrophysical plasma in supernovae and near neutron stars is analyzed. For iron group nuclides the magnetic modification of the nuclear structure shifts a maximum of nucleosynthesis products towards smaller mass numbers approaching titanium. Signals of ⁴⁴Ti radioactive decay in the gamma-spectra of the supernova remnant Cassiopeia A are revealed from the Integral IBIS/ISGRI observational data. The determined gamma-ray fluxes for ⁴⁴Sc^* lines with energies 67.9keV and 78.4keV correspond to the initial ⁴⁴Ti volume (3.3 _−0.7 ^+0.9 ) × 10⁻⁴ solar masses that corroborates the magnetic enhancement of isotope production at a field constrained on conditions of supernova explosion.