4 p studies of the 1 . 8 – 4 . 8 GeV 3 He 1 natAg , 197 Au reactions . II .

نویسندگان

  • N. R. Yoder
  • C. Volant
  • E. C. Pollacco
  • R. Legrain
  • R. G. Korteling
چکیده

Multifragmentation of Ag and Au nuclei induced by 1.8–4.8 GeV He ions has been studied with the Indiana Silicon Sphere 4p detector array. Rapidity, moving source, and sphericity-coplanarity analyses are consistent with near-simultaneous emission from a source in approximate kinetic equilibrium. For the most dissipative collisions, the spectral peaks are broadened and shifted to very low energies, indicative of emission from an extended nuclear system with r/r0;1/3. Predictions of an intranuclear cascade/expanding, emitting source model compare well with experimental multiplicity distributions and the evolution of fragment spectral shapes. @S0556-2813~96!06208-5#

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تاریخ انتشار 1999