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Fragment properties of fragmenting heavy nuclei produced in central and semi-peripheral collisions
- Source :
- Nuclear Physics A, Nuclear Physics A, Elsevier, 2009, 816 (1-4), pp.1-18. ⟨10.1016/j.nuclphysa.2008.11.005⟩, Nuclear Physics A, 2009, 816 (1-4), pp.1-18. ⟨10.1016/j.nuclphysa.2008.11.005⟩
- Publication Year :
- 2008
-
Abstract
- Fragment properties of hot fragmenting sources of similar sizes produced in central and semi-peripheral collisions are compared in the excitation energy range 5-10 AMeV. For semi-peripheral collisions a method for selecting compact quasi-projectiles sources in velocity space similar to those of fused systems (central collisions) is proposed. The two major results are related to collective energy. The weak radial collective energy observed for quasi-projectile sources is shown to originate from thermal pressure only. The larger fragment multiplicity observed for fused systems and their more symmetric fragmentation are related to the extra radial collective energy due to expansion following a compression phase during central collisions. A first attempt to locate where the different sources break in the phase diagram is proposed.<br />23 pages submitted to NPA
- Subjects :
- Nuclear reaction
Nuclear and High Energy Physics
multifragmentation
FOS: Physical sciences
central and semi-peripheral collisions
latent heat
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
01 natural sciences
fragment partitions
Fragmentation (mass spectrometry)
nucleaer physic
0103 physical sciences
Velocity space
Thermal
Multiplicity (chemistry)
Nuclear Experiment (nucl-ex)
010306 general physics
Intermediate energy heavy-ion reactions
Nuclear Experiment
Phase diagram
Physics
010308 nuclear & particles physics
Charged particle
nucleus-nucleus collision
phase transition
collective energy
Atomic physics
Excitation
Subjects
Details
- Language :
- English
- ISSN :
- 03759474
- Database :
- OpenAIRE
- Journal :
- Nuclear Physics A, Nuclear Physics A, Elsevier, 2009, 816 (1-4), pp.1-18. ⟨10.1016/j.nuclphysa.2008.11.005⟩, Nuclear Physics A, 2009, 816 (1-4), pp.1-18. ⟨10.1016/j.nuclphysa.2008.11.005⟩
- Accession number :
- edsair.doi.dedup.....62423d5e366b6c2fcc2a1a1ad8907956