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APS » Journals » Phys. Rev. C » Volume 57 » Issue 6
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Phys. Rev. C 57, R2786–R2789 (1998)

Time scale for emission of soft ejectiles in the disassembly of hot nuclei

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G. Wang1, K. Kwiatkowski1, D. S. Bracken1,*, E. Renshaw Foxford1,†, W.-c. Hsi1, R. G. Korteling2, R. Legrain3, K. B. Morley1,*, E. C. Pollacco3, V. E. Viola1, and C. Volant3
1Departments of Chemistry and Physics and Indiana University Cyclotron Facility, Indiana University, Bloomington, Indiana 47405
2Department of Chemistry, Simon Fraser University, Burnaby V5A 1S6, British Columbia, Canada
3CEA DAPNIA/SPhN, C.E. Saclay, F-91191 Gif-sur-Yvette, France

Received 19 May 1997; published in the issue dated June 1998

Small-angle relative velocity correlations have been measured for the emission of soft intermediate mass fragments (0.7<~E/A<~3.0MeV) in high-deposition-energy events produced in the 4.8 GeV 3He+197Au reaction. The experimental correlations are compared with an N-body Coulomb-trajectory simulation that accounts for the fragment spectra, multiplicity, and charge distributions. In order to reproduce the data, a small residue (Z∼10–20) that is located randomly in the breakup volume is required. This analysis indicates breakup time scales of order τ=20–50fm/c.

© 1998 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.57.R2786
DOI:
10.1103/PhysRevC.57.R2786
PACS:
25.70.Pq, 25.55.-e

*Present address: Los Alamos National Laboratory, Los Alamos, NM 87545.

†Present address: Microsoft Corporation, Seattle, WA 98195.

 
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