Destruction of26Al in explosive nucleosynthesis

Details Destruction of26Al in explosive nucleosynthesis Destruction of26Al in explosive nucleosynthesis

Mar 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986zphya.323....1t&link_type=abstract

Zeitschrift für Physik A Atomic Nuclei, Volume 323, Issue 1, pp.1-11

Astronomy and Astrophysics

Astrophysics

11

25.90, 95.90

Scientific paper

The26Al( n, p)26Mg reaction has been studied using neutron spectra which closely resembled Maxwell-Boltzmann (M.-B.) distributions with thermal energies of kT=40 ×10-6, 31 and 71 keV and also for E n =270 350 keV. These energies correspond to stellar temperatures T 9=4.6×10-7, 0.36, 0.82 and 3.1 4.1, where T 9 is in units of 109 K. The partial cross sections for the p 0-( p 1-)transition are found to equal 26±10(1,850 ±150), 13±6(124±17), 16±13(84±14) and 21±8(72±15) mb for the above neutron spectra, respectively. The astrophysical reaction rate is determined for the combined p 0- and p 1-transitions to be N A <σν>=(0.324±0.026, 20.5±2.7, 22.6±4.3 and 38.7±11.1) ×106 cm3 mole-1 s-1. The results are compared with previous investigations and with statistical model calculations.

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