dorsal/arxiv
View SchemaExpansion and evaporation of hot nuclei: Comparison between semi-classical and quantal mean-field approaches
| Authors | D. Lacroix, Ph. Chomaz |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9810004 |
| URL | https://arxiv.org/abs/nucl-th/9810004 |
| DOI | 10.1016/S0375-9474(98)00203-6 |
| Journal | Nucl. Phys. A 636 (1998) 85 |
Abstract
We present a general discussion of the mean field dynamics of finite nuclei prepared under extreme conditions of temperature and pressure. We compare the prediction of semi-classical approximation with complete quantum simulations. Many features of the dynamics are carefully studied such as the collective expansion, the evaporation process, the different time-scale... This study points out many quantitative differences between quantum and semi-classical approaches. Part of the differences are related to numerical features inherent in semi-classical simulations but most of them are a direct consequence of the non treatment of nuclei as quantal objects. In particular, we show that because of a too strong damping in semi-classical approaches the expansion of hot nuclei is quenched and the speed of the collective motion reduced.
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"abstract": "We present a general discussion of the mean field dynamics of finite nuclei\nprepared under extreme conditions of temperature and pressure. We compare the\nprediction of semi-classical approximation with complete quantum simulations.\nMany features of the dynamics are carefully studied such as the collective\nexpansion, the evaporation process, the different time-scale... This study\npoints out many quantitative differences between quantum and semi-classical\napproaches. Part of the differences are related to numerical features inherent\nin semi-classical simulations but most of them are a direct consequence of the\nnon treatment of nuclei as quantal objects. In particular, we show that because\nof a too strong damping in semi-classical approaches the expansion of hot\nnuclei is quenched and the speed of the collective motion reduced.",
"arxiv_id": "nucl-th/9810004",
"authors": [
"D. Lacroix",
"Ph. Chomaz"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/S0375-9474(98)00203-6",
"journal_ref": "Nucl. Phys. A 636 (1998) 85",
"title": "Expansion and evaporation of hot nuclei: Comparison between semi-classical and quantal mean-field approaches",
"url": "https://arxiv.org/abs/nucl-th/9810004"
},
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