Complex Fragment Production in 139La-induced Reactions at 35, 40, 45, and 55 MeV/nucleon

Authors

P. Roussel-Chomaz, Nuclear Science Division, Lawrence Berkeley Laboratory
N. Colonna, Nuclear Science Division, Lawrence Berkeley Laboratory
Y. Blumenfeld, Nuclear Science Division, Lawrence Berkeley Laboratory
B. Libby, Nuclear Science Division, Lawrence Berkeley Laboratory
Graham F. Peaslee, Nuclear Science Division, Lawrence Berkeley LaboratoryFollow
D. N. Delis, Nuclear Science Division, Lawrence Berkeley Laboratory
K. Hanold, Nuclear Science Division, Lawrence Berkeley Laboratory
M. A. McMahan, Nuclear Science Division, Lawrence Berkeley Laboratory
J. C. Meng, Nuclear Science Division, Lawrence Berkeley Laboratory
Q. C. Sui, Nuclear Science Division, Lawrence Berkeley Laboratory
G. J. Wozniak, Nuclear Science Division, Lawrence Berkeley Laboratory
L, G. Moretto, Nuclear Science Division, Lawrence Berkeley Laboratory
H. Madani, Department of Chemistry, University of Maryland
A. A. Marchetti, Department of Chemistry, University of Maryland
A. C. Mignery, Department of Chemistry, University of Maryland
G. Guarino, Instituto Nazionale di Fisica Nucleare (INFN), Sezione di Bari
N. Santoruvo, Universitá di Milano
I. Iori, Universitá di Milano
S. Bradley, Kamen Sciences

Document Type

Article

Publication Date

1-18-1993

Publication Source

Nuclear Physics A

Volume Number

551

Issue Number

3

First Page

508

Last Page

540

Publisher

Elsevier

Abstract

Complex fragment emission (Z>3) has been studied in the reactions of 35, 40, 45 and 55 MeV/u139La+X. Charge, angular, and energy distributions were measured inclusively and in coincidence with other complex fragments, and were used to extract source rapidities, velocity distributions, and cross sectins. Multifragment events increase with both bombarding energy and entrance-channel mass asymmetry. The excitation functions for multifragment events rise strongly with excitation energy. These excitation functions are independent of the target-projectile combination and bombarding energy suggesting, the formation of an intermediate nuclear system, whose decay properties depend mainly on its excitation energy and angular momentum.

Recommended Citation

Repository citation: Roussel-Chomaz, P.; Colonna, N.; Blumenfeld, Y.; Libby, B.; Peaslee, Graham F.; Delis, D. N.; Hanold, K.; McMahan, M. A.; Meng, J. C.; Sui, Q. C.; Wozniak, G. J.; Moretto, L, G.; Madani, H.; Marchetti, A. A.; Mignery, A. C.; Guarino, G.; Santoruvo, N.; Iori, I.; and Bradley, S., "Complex Fragment Production in 139La-induced Reactions at 35, 40, 45, and 55 MeV/nucleon" (1993). Faculty Publications. Paper 1152.
https://digitalcommons.hope.edu/faculty_publications/1152

Published in: Nuclear Physics A, Volume 551, Issue 3, January 18, 1993, pages 508-540. Copyright © 1993 Elsevier.