Temperature and energy partition in fragmentation

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We study fragmentation of small atomistic clusters via molecular dynamics. We calculate the time scales related to fragment formation and emission. We also show that some degree of thermalization is achieved during the expansion process, which allows the determination of local temperature. In this w...

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Autores principales: Strachan, A., Dorso, C.O.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_05562813_v59_n1_p285_Strachan
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_05562813_v59_n1_p285_Strachan2023-10-03T15:34:51Z Temperature and energy partition in fragmentation Strachan, A. Dorso, C.O. We study fragmentation of small atomistic clusters via molecular dynamics. We calculate the time scales related to fragment formation and emission. We also show that some degree of thermalization is achieved during the expansion process, which allows the determination of local temperature. In this way we can calculate the breakup temperature as a function of excitation energy, i.e., the fragmentation caloric curve. Fragmentation appears as a rather constant temperature region of the caloric curve. Furthermore, we show that different definitions of temperature, related to different degrees of freedom, yield very similar values. © 1999 The American Physical Society. Fil:Strachan, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Dorso, C.O. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_05562813_v59_n1_p285_Strachan
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description We study fragmentation of small atomistic clusters via molecular dynamics. We calculate the time scales related to fragment formation and emission. We also show that some degree of thermalization is achieved during the expansion process, which allows the determination of local temperature. In this way we can calculate the breakup temperature as a function of excitation energy, i.e., the fragmentation caloric curve. Fragmentation appears as a rather constant temperature region of the caloric curve. Furthermore, we show that different definitions of temperature, related to different degrees of freedom, yield very similar values. © 1999 The American Physical Society.
format JOUR
author Strachan, A.
Dorso, C.O.
spellingShingle Strachan, A.
Dorso, C.O.
Temperature and energy partition in fragmentation
author_facet Strachan, A.
Dorso, C.O.
author_sort Strachan, A.
title Temperature and energy partition in fragmentation
title_short Temperature and energy partition in fragmentation
title_full Temperature and energy partition in fragmentation
title_fullStr Temperature and energy partition in fragmentation
title_full_unstemmed Temperature and energy partition in fragmentation
title_sort temperature and energy partition in fragmentation
url http://hdl.handle.net/20.500.12110/paper_05562813_v59_n1_p285_Strachan
work_keys_str_mv AT strachana temperatureandenergypartitioninfragmentation
AT dorsoco temperatureandenergypartitioninfragmentation
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