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Caloric curves of small fragmenting clusters.
MedLine Citation:
PMID:  12443478     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
The kinetic energy release distribution of neutral atoms emitted from photoexcited clusters Sr(+)(n) with n=4-15, has been obtained by time-of-flight velocity dispersion. The deduced temperature is plotted as a function of the excitation energy. For small sizes n<7 a general increase is observed. For cluster sizes larger than n=9, the deduced caloric curves first increase, and then show evidence of a plateau regime as excitation energy increases. This limiting temperature in neutral atom ejection is consistent with a bound cluster-vapor phase transition in a microcanonical system.
Authors:
C Bréchignac; Ph Cahuzac; B Concina; J Leygnier
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Publication Detail:
Type:  Journal Article     Date:  2002-10-29
Journal Detail:
Title:  Physical review letters     Volume:  89     ISSN:  0031-9007     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2002 Nov 
Date Detail:
Created Date:  2002-11-21     Completed Date:  2003-01-28     Revised Date:  2003-11-04    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  203401     Citation Subset:  -    
Affiliation:
Laboratoire Aimé Cotton CNRS, Université Paris-Sud, Bâtiment 505, F-91405 Orsay Cedex, France.
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