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APS » Journals » Phys. Rev. Lett. » Volume 73 » Issue 23
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Phys. Rev. Lett. 73, 3070–3073 (1994)

Fragmentation of Necklike Structures

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C. P. Montoya, W. G. Lynch, D. R. Bowman*, G. F. Peaslee†, N. Carlin‡, R. T. de Souza§, C. K. Gelbke, W. G. Gong**, Y. D. Kim††, M. A. Lisa**, L. Phair**, M. B. Tsang, J. B. Webster, and C. Williams
National Superconducting Cyclotron Laboratory and Department of Physics & Astronomy, Michigan State University, East Lansing, Michigan 48824

N. Colonna‡‡, K. Hanold, M. A. McMahan, G. J. Wozniak, and L. G. Moretto
Nuclear Science Division and Accelerator and Fusion Research Division, Lawrence Berkeley Laboratory, Berkeley, California 94720

Received 1 July 1994; published in the issue dated 5 December 1994

Intermediate mass fragment (IMF: 3≤Z≤20 emission from necklike structures joining projectilelike and targetlike residues has been observed for peripheral 129Xe + natCu collisions at E/A=50 MeV. These fragments are emitted primarily at velocities between those of the projectilelike and targetlike residues. Relative to the charge distribution of fragments evaporated from projectilelike residues, the distribution for "neck" emission shows an enhanced emission for fragments with 4≤ZIMF≤12. This feature is consistent with expectations for the fragmentation of a noncompact cylindrical configuration.

© 1994 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.73.3070
DOI:
10.1103/PhysRevLett.73.3070
PACS:
25.70.Ji, 25.70.Mn

*Present address: Chalk River Laboratories, Chalk River, Ontario, Canada K0J 1J0.

†Present address: Physics Department, Hope College, Holland, MI 49423.

‡Present address: Instituto de Fisica, Universidade de Sao Paulo, C. Postal 20516, CEP 01452-990, Sao Paulo, Brazil.

§Present address: Department of Chemistry and Indiana University Cyclotron Facility, Bloomington, IN 47405.

**Present address: Lawrence Berkeley Laboratory, Berkeley, CA 94720.

††Present address: National Laboratory for High Energy Physics, 1-1 Oho, Tsukuba, Ibaraki 305, Japan.

‡‡Present address: INFN-Sez. di Bari, 70126 Bari, Italy.

 
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