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Title: Nonextensive statistical effects on nuclear astrophysics

Abstract

Density and temperature conditions in many stellar core (like the solar core) imply the presence of nonideal plasma effects with memory and long-range interactions between particles. This aspect suggests the possibility that the stellar core could not be in a global thermodynamical equilibrium but satisfies the conditions of a metastable state with a stationary (nonextensive) power law distribution function among ions. The order of magnitude of the deviation from the standard Maxwell-Boltzmann distribution can be derived microscopically by considering the presence of random electrical microfields in the stellar plasma. We show that such a nonextensive statistical effect can be very relevant in many nuclear astrophysical problems.

Authors:
 [1];  [2];  [3];  [2];  [3];  [2]
  1. Dip. di Fisica, Universita di Torino (Italy)
  2. (Italy)
  3. Dip. di Fisica, Politecnico di Torino (Italy)
Publication Date:
OSTI Identifier:
20798592
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 831; Journal Issue: 1; Conference: International conference on frontiers in nuclear structure, astrophysics, and reactions - FINUSTAR, Isle of Kos (Greece), 12-17 Sep 2005; Other Information: DOI: 10.1063/1.2200980; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ASTROPHYSICS; BOLTZMANN STATISTICS; DENSITY; DISTRIBUTION FUNCTIONS; EQUILIBRIUM; INTERACTION RANGE; IONS; METASTABLE STATES; PLASMA; RANDOMNESS; STATISTICAL MODELS

Citation Formats

Gervino, G., INFN, Sezione di Torino, Lavagno, A., INFN, Sezione di Torino, Quarati, P., and INFN Sezione di Cagliari. Nonextensive statistical effects on nuclear astrophysics. United States: N. p., 2006. Web. doi:10.1063/1.2200980.
Gervino, G., INFN, Sezione di Torino, Lavagno, A., INFN, Sezione di Torino, Quarati, P., & INFN Sezione di Cagliari. Nonextensive statistical effects on nuclear astrophysics. United States. doi:10.1063/1.2200980.
Gervino, G., INFN, Sezione di Torino, Lavagno, A., INFN, Sezione di Torino, Quarati, P., and INFN Sezione di Cagliari. Wed . "Nonextensive statistical effects on nuclear astrophysics". United States. doi:10.1063/1.2200980.
@article{osti_20798592,
title = {Nonextensive statistical effects on nuclear astrophysics},
author = {Gervino, G. and INFN, Sezione di Torino and Lavagno, A. and INFN, Sezione di Torino and Quarati, P. and INFN Sezione di Cagliari},
abstractNote = {Density and temperature conditions in many stellar core (like the solar core) imply the presence of nonideal plasma effects with memory and long-range interactions between particles. This aspect suggests the possibility that the stellar core could not be in a global thermodynamical equilibrium but satisfies the conditions of a metastable state with a stationary (nonextensive) power law distribution function among ions. The order of magnitude of the deviation from the standard Maxwell-Boltzmann distribution can be derived microscopically by considering the presence of random electrical microfields in the stellar plasma. We show that such a nonextensive statistical effect can be very relevant in many nuclear astrophysical problems.},
doi = {10.1063/1.2200980},
journal = {AIP Conference Proceedings},
number = 1,
volume = 831,
place = {United States},
year = {Wed Apr 26 00:00:00 EDT 2006},
month = {Wed Apr 26 00:00:00 EDT 2006}
}