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The nuclear liquid-vapor phase transition: Equilibrium between phases or free decay in vacuum?

Abstract

Recent analyses of multifragmentation in terms of Fisher's model and the related construction of a phase diagram brings forth the problem of the true existence of the vapor phase and the meaning of its associated pressure. Our analysis shows that a thermal emission picture is equivalent to a Fisher-like equilibrium description which avoids the problem of the vapor and explains the recently observed Boltzmann-like distribution of the emission times. In this picture a simple Fermi gas thermometric relation is naturally justified. Low energy compound nucleus emission of intermediate mass fragments is shown to scale according to Fisher's formula and can be simultaneously fit with the much higher energy ISiS multifragmentation data.
Authors:
Phair, L; Moretto, L G; Elliott, J B; Wozniak, G J [1] 
  1. Nuclear Science Division, Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720 (United States)
Publication Date:
Mar 03, 2003
Product Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 656; Journal Issue: 1; Conference: Conference on frontiers of nuclear structure, Berkeley, CA (United States), 29 Jul - 2 Aug 2002; Other Information: DOI: 10.1063/1.1556633; (c) 2003 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); PBD: 3 Mar 2003
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; COMPOUND NUCLEI; EMISSION; EQUILIBRIUM; EVAPORATION MODEL; FERMI GAS; HEAVY ION REACTIONS; NUCLEAR DECAY; NUCLEAR FRAGMENTATION; PHASE DIAGRAMS; PHASE TRANSFORMATIONS; PRECOMPOUND-NUCLEUS EMISSION
OSTI ID:
20621444
Country of Origin:
United States
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0094-243X; APCPCS; TRN: US03C6405065094
Submitting Site:
INIS
Size:
page(s) 129-135
Announcement Date:
Aug 28, 2005

Citation Formats

Phair, L, Moretto, L G, Elliott, J B, and Wozniak, G J. The nuclear liquid-vapor phase transition: Equilibrium between phases or free decay in vacuum?. United States: N. p., 2003. Web. doi:10.1063/1.1556633.
Phair, L, Moretto, L G, Elliott, J B, & Wozniak, G J. The nuclear liquid-vapor phase transition: Equilibrium between phases or free decay in vacuum?. United States. https://doi.org/10.1063/1.1556633
Phair, L, Moretto, L G, Elliott, J B, and Wozniak, G J. 2003. "The nuclear liquid-vapor phase transition: Equilibrium between phases or free decay in vacuum?" United States. https://doi.org/10.1063/1.1556633.
@misc{etde_20621444,
title = {The nuclear liquid-vapor phase transition: Equilibrium between phases or free decay in vacuum?}
author = {Phair, L, Moretto, L G, Elliott, J B, and Wozniak, G J}
abstractNote = {Recent analyses of multifragmentation in terms of Fisher's model and the related construction of a phase diagram brings forth the problem of the true existence of the vapor phase and the meaning of its associated pressure. Our analysis shows that a thermal emission picture is equivalent to a Fisher-like equilibrium description which avoids the problem of the vapor and explains the recently observed Boltzmann-like distribution of the emission times. In this picture a simple Fermi gas thermometric relation is naturally justified. Low energy compound nucleus emission of intermediate mass fragments is shown to scale according to Fisher's formula and can be simultaneously fit with the much higher energy ISiS multifragmentation data.}
doi = {10.1063/1.1556633}
journal = []
issue = {1}
volume = {656}
journal type = {AC}
place = {United States}
year = {2003}
month = {Mar}
}