Year: 1999
Type: article
Abstract: 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.
Source: Physical Review C
Authors: A. Strachan, C. O. Dorso
Institution: Universidad de Buenos Aires
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1990488583