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Phys. Rev. Lett. 45, 509–512 (1980)

Dependence of Isobaric Charge Distributions on Energy Loss and Mass Asymmetry in Damped Collisions

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A. C. Mignerey and V. E. Viola, Jr.
Department of Chemistry and Cyclotron Laboratory, University of Maryland, College Park, Maryland 20742

H. Breuer
Department of Physics and Cyclotron Laboratory, University of Maryland, College Park, Maryland 20742

K. L. Wolf and B. G. Glagola
Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439

J. R. Birkelund, D. Hilscher*, J. R. Huizenga, W. U. Schröder, and W. W. Wilcke
Departments of Chemistry and Physics and Nuclear Structure Research Laboratory, University of Rochester, Rochester, New York 14627

Received 23 April 1980; published in the issue dated 18 August 1980

Yields for specific Z and A have been measured for projectilelike fragments produced in the reaction of 8.3-MeV/u 56Fe ions with targets of 56Fe, 165Ho, and 238U. Variances of the isobaric charge distributions σZ2(A) reveal a saturation value of σZ2(A)≈0.8, reached within the first 30-50 MeV of energy loss depending on target. Variances of the isotopic mass distributions saturate at a value of σZ2(A)≈2-4, which is reached after about 60-80 MeV of energy loss. The data are compared with N/Z equilibration models.

© 1980 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.45.509
DOI:
10.1103/PhysRevLett.45.509
PACS:
25.70.Hi, 24.60.+m, 25.70.Bc

*Permanent address: Hahn-Meitner-Institut für Kernforschung, D-1000 Berlin 39, West Germany.

 
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