Bibliographic Details
| Title: |
Temperature dependence of modified CNO nuclear reaction rates in dense stellar plasmas |
| Authors: |
Ferro, F.1, Lavagno, A.1,2 alavagno@polito.it, Quarati, P.1,3 |
| Source: |
Physica A. Sep2004, Vol. 340 Issue 1-3, p477-482. 6p. |
| Subjects: |
Temperature, Nuclear reactions, Plasma gases, Nuclear energy |
| Abstract: |
We study the dependence of the CNO nuclear reaction rates on temperature, in the range of 107–108 K, the typical range of temperature evolution from a Sun-like star towards a white dwarf. We show that the temperature dependence of the CNO nuclear reaction rates is strongly affected by the presence of non-extensive statistical effects in the dense stellar core. A very small deviation from the Maxwell–Boltzmann particle distribution implies a relevant enhancement of the CNO reaction rate and could explain the presence of heavier elements (e.g. Fe, Mg) in the final composition of a white dwarf core. Such a behavior is consistent with the recent experimental upper limit to the fraction of energy that the Sun produces via the CNO fusion cycle. [Copyright &y& Elsevier] |
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| Database: |
Engineering Source |
