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Temperature dependence of modified CNO nuclear reaction rates in dense stellar plasmas

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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]
Copyright of Physica A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 13703523
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Temperature dependence of modified CNO nuclear reaction rates in dense stellar plasmas
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  Data: <searchLink fieldCode="AR" term="%22Ferro%2C+F%2E%22">Ferro, F.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Lavagno%2C+A%2E%22">Lavagno, A.</searchLink><relatesTo>1,2</relatesTo><i> alavagno@polito.it</i><br /><searchLink fieldCode="AR" term="%22Quarati%2C+P%2E%22">Quarati, P.</searchLink><relatesTo>1,3</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Physica+A%22">Physica A</searchLink>. Sep2004, Vol. 340 Issue 1-3, p477-482. 6p.
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  Data: <searchLink fieldCode="DE" term="%22Temperature%22">Temperature</searchLink><br /><searchLink fieldCode="DE" term="%22Nuclear+reactions%22">Nuclear reactions</searchLink><br /><searchLink fieldCode="DE" term="%22Plasma+gases%22">Plasma gases</searchLink><br /><searchLink fieldCode="DE" term="%22Nuclear+energy%22">Nuclear energy</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: We study the dependence of the CNO nuclear reaction rates on temperature, in the range of <f>107</f>–<f>108 K</f>, 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]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Physica A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.physa.2004.04.043
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      – Code: eng
        Text: English
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        PageCount: 6
        StartPage: 477
    Subjects:
      – SubjectFull: Temperature
        Type: general
      – SubjectFull: Nuclear reactions
        Type: general
      – SubjectFull: Plasma gases
        Type: general
      – SubjectFull: Nuclear energy
        Type: general
    Titles:
      – TitleFull: Temperature dependence of modified CNO nuclear reaction rates in dense stellar plasmas
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            NameFull: Ferro, F.
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            NameFull: Lavagno, A.
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              M: 09
              Text: Sep2004
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              Value: 340
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