Mechanical and chemical spinodal instabilities in finite quantum systems

Self-consistent quantum approaches are used to study the instabilities of finite nuclear systems. The frequencies of multipole density fluctuations are determined as a function of dilution and temperature for several isotopes. The spinodal region of the phase diagrams is determined, and it appears t...

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Bibliographic Details
Published in:Physical review letters 2002-03, Vol.88 (12), p.122701-122701, Article 122701
Main Authors: Colonna, M, Chomaz, Ph, Ayik, S
Format: Article
Language:English
Subjects:
Nuclear Theory
Physics
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Summary:Self-consistent quantum approaches are used to study the instabilities of finite nuclear systems. The frequencies of multipole density fluctuations are determined as a function of dilution and temperature for several isotopes. The spinodal region of the phase diagrams is determined, and it appears that instabilities are reduced by finite size effects. The role of surface and volume instabilities is discussed. It is indicated that the important chemical effects associated with mechanical disruption may lead to isospin fractionation.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.88.122701