# 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:

- Dip. di Fisica, Universita di Torino (Italy)
- (Italy)
- 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}

}