| Issue |
Europhys. Lett.
Volume 51, Number 1, July I 2000
|
|
|---|---|---|
| Page(s) | 34 - 40 | |
| Section | Nuclear physics | |
| DOI | https://doi.org/10.1209/epl/i2000-00334-5 | |
| Published online | 01 September 2002 | |
Effect of cluster formation on isospin asymmetry in the liquid-gas phase transition region
National Superconducting Cyclotron Laboratory and
Department of Physics and Astronomy -
Michigan State University, East Lansing, MI 48824, USA
Received:
25
February
2000
Accepted:
16
May
2000
Nuclear matter within the liquid-gas phase transition region is investigated in a mean-field two-component Fermi-gas model. Following largely analytic considerations, it is shown that: 1) Due to the density dependence of asymmetry energy, some of the neutron excess from the high-density phase could be expelled into the low-density region. 2) Formation of clusters in the gas phase tends to counteract this trend, making the gas phase more liquid-like and reducing the asymmetry in the gas phase. Flow of asymmetry between the spectator and midrapidity region in reactions is discussed and a possible inversion of the flow direction is indicated.
PACS: 25.70.Mn – Projectile and target fragmentation / 25.70.Pq – Multifragment emission and correlations / 21.65.+f – Nuclear matter
© EDP Sciences, 2000
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