Phys. Rev. C 69, 034612 (2004) [11 pages]Moving-source and caloric-curve analyses of reactions induced by 1.8–4.8 GeV 3He beamson natAg and 197Au nucleiReceived 28 October 2003; published 24 March 2004 Multifragment breakup of natAg and 197Au nuclei bombarded by 1.8–4.8 GeV 3He ions has been studied with the Indiana Silicon Sphere 4π detector array. To investigate the properties of the emitting source as a function of excitation energy, a two-component moving-source analysis has been performed on the intermediate-mass-fragment spectra, gating on excitation energy. The results provide evidence for nuclear expansion∕dilution to a value of ρ∕ρ0≲1∕3 prior to breakup. For the most violent events, relatively low source velocities of v∕c~0.01 and slope temperatures of T∼15 MeV are obtained for the dominant thermal-like source. The dependence of isotope ratios on deposition energy and ejectile kinetic energy is examined for H and He isotopes, and the caloric curves for the 4.8 GeV data are presented. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevC.69.034612
DOI:
10.1103/PhysRevC.69.034612
PACS:
25.70.Pq, 25.55.−e
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.