Origin of the main r-process elements

Otsuki, K, Truran, J, Wiescher, M, Gorres, J, Mathews, G, Frekers, D, Mengoni, A, Bartlett, A and Tostevin, J (2006) Origin of the main r-process elements AIP Conference Proceedings, 847. pp. 227-232.

Preview	Text AIP_Otsuki.pdf - Version of Record Available under License : See the attached licence file. Download (167kB)
	Text (licence) licence.txt Download (1kB)

Abstract

The r-process is supposed to be a primary process which assembles heavy nuclei from a photo-dissociated nucleon gas. Hence, the reaction flow through light elements can be important as a constraint on the conditions for the r-process. We have studied the impact of di-neutron capture and the neutron-capture of light (Z<10) elements on r-process nucleosynthesis in three different environments: neutrino-driven winds in Type II supernovae; the prompt explosion of low mass supernovae; and neutron star mergers. Although the effect of di-neutron capture is not significant for the neutrino-driven wind model or low-mass supernovae, it becomes significant in the neutron-star merger model. The neutron-capture of light elements, which has been studied extensively for neutrino-driven wind models, also impacts the other two models. We show that it may be possible to identify the astrophysical site for the main r-process if the nuclear physics uncertainties in current r-process calculations could be reduced.

Item Type:	Article
Divisions :	Faculty of Engineering and Physical Sciences > Physics
Authors :	Name Email ORCID Otsuki, K Truran, J Wiescher, M Gorres, J Mathews, G Frekers, D Mengoni, A Bartlett, A Tostevin, J
Date :	12 July 2006
DOI :	10.1063/1.2234406
Depositing User :	Symplectic Elements
Date Deposited :	14 Oct 2011 14:14
Last Modified :	31 Oct 2017 14:10
URI:	http://epubs.surrey.ac.uk/id/eprint/7365

Actions (login required)

View Item

Downloads