Impact of uncertainties in reaction Q values on nucleosynthesis in type I x-ray bursts

Parikh, A. and Jose, J. and Iliadis, C. and Moreno, F. and Rauscher, T.. (2009) Impact of uncertainties in reaction Q values on nucleosynthesis in type I x-ray bursts. Physical review. C, Nuclear physics, Vol. 79, H. 4 , 045802, 12 S..

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Official URL: http://edoc.unibas.ch/dok/A5253863

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Nucleosynthesis in type I X-ray bursts may involve up to several thousand nuclear processes. The majority of these processes have only been determined theoretically due to the lack of sufficient experimental information. Accurate reaction Q-values are essential for reliable theoretical estimates of reaction rates. Those reactions with small Q-values (>1 MeV) are of particular interest in these environments as they may represent waiting points for a continuous abundance flow toward heavier-mass nuclei. To explore the nature of these waiting points, we have performed a comprehensive series of post-processing calculations which examine the sensitivity of nucleosynthesis in type I X-ray bursts to uncertainties in reaction Q-values. We discuss and list the relatively few critical masses for which measurements could better constrain the results of our studies. In particular, we stress the importance of measuring the mass of 65As to obtain an experimental Q-value for the 64Ge(p,γ)65As reaction.
Faculties and Departments:05 Faculty of Science > Departement Physik > Former Organization Units Physics > Theoretische Physik Astrophysik (Thielemann)
UniBasel Contributors:Rauscher, Thomas
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Institute of Physics
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:22 Mar 2012 14:26
Deposited On:22 Mar 2012 13:52

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