Reducibility and a New Entropic Term in Multifragment Charge Distribution

Authors

A. Ferrero, On leave from CNEA, Buenos Aires, Argentina
I. Iori, Istituto Nazionale di Fisica, Nucleare and Dipartimento di Fisica, Via Celoria 16, 20133 Milano, Italy
A. Moroni, Istituto Nazionale di Fisica, Nucleare and Dipartimento di Fisica, Via Celoria 16, 20133 Milano, Italy
F. Petruzelli, Istituto Nazionale di Fisica, Nucleare and Dipartimento di Fisica, Via Celoria 16, 20133 Milano, Italy
R. Scardaoni, Istituto Nazionale di Fisica, Nucleare and Dipartimento di Fisica, Via Celoria 16, 20133 Milano, Italy
L. G. Moretto, Nuclear Science Division, Lawrence Berkeley Laboratory
D. R. Bowman, AECL Research, Chalk River Laboratories, Chalk River
M. Bruno, Dipartimento di Fisica and Istituto Nazionale di Fisica Nucleare, Via Irnerio 46, 40126 Bologna, Italy
P. Buttazzo, Dipartimento di Fisica and Istituto Nazionale di Fisica Nucleare, Via A. Valerio 2, 34127 Trieste, Italy
L. Celano, Istituto Nazionale di Fisica Nucleare, Via Amendola 173, 70126 Bari, Italy
N. Colonna, Istituto Nazionale di Fisica Nucleare, Via Amendola 173, 70126 Bari, Italy
M. D'Agostino, Dipartimento di Fisica and Istituto Nazionale di Fisica Nucleare, Via Irnerio 46, 40126 Bologna, Italy
J. D. Dinius, National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824
M. L. Fiandri, Dipartimento di Fisica and Istituto Nazionale di Fisica Nucleare, Via Irnerio 46, 40126 Bologna, Italy
E. Fuschini, Dipartimento di Fisica and Istituto Nazionale di Fisica Nucleare, Via Irnerio 46, 40126 Bologna, Italy
C. K. Gelbke, National Superconducting Cyclotron Laboratory, Michigan State University
T. Glasmacher, National Superconducting Cyclotron Laboratory, Michigan State University
F. Gramegna, Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Via Romea 4, 35020 Legnaro, Italy
D. O. Handzy, National Superconducting Cyclotron Laboratory, Michigan State University
D. Horn, AECL Research, Chalk River Laboratories, Chalk River
W. C. Hsi, National Superconducting Cyclotron Laboratory, Michigan State University
M. Huang, National Superconducting Cyclotron Laboratory, Michigan State University
G. J. Kunde, National Superconducting Cyclotron Laboratory, Michigan State University
M. A. Lisa, National Superconducting Cyclotron Laboratory, Michigan State University
W. G. Lynch, National Superconducting Cyclotron Laboratory, Michigan State University
P. F. Mastinu, Dipartimento di Fisica and Istituto Nazionale di Fisica Nucleare, Via Irnerio 46, 40126 Bologna, Italy
P. M. Milazzo, Dipartimento di Fisica and Istituto Nazionale di Fisica Nucleare, Via Irnerio 46, 40126 Bologna, Italy
G. V. Margagliotti, Dipartimento di Fisica and Istituto Nazionale di Fisica Nucleare, Via A. Valerio 2, 34127 Trieste, Italy
C. P. Montoya, National Superconducting Cyclotron Laboratory, Michigan State University
Graham F. Peaslee, National Superconducting Cyclotron Laboratory, Michigan State UniversityFollow
L. Phair, National Superconducting Cyclotron Laboratory, Michigan State University
R. Rui, Dipartimento di Fisica and Istituto Nazionale di Fisica Nucleare, Via A. Valerio 2, 34127 Trieste, Italy
C. Schwarz, National Superconducting Cyclotron Laboratory, Michigan State University
M. B. Tsang, National Superconducting Cyclotron Laboratory, Michigan State University
G. Vannini, Dipartimento di Fisica and Istituto Nazionale di Fisica Nucleare, Via A. Valerio 2, 34127 Trieste, Italy
C. Williams, AECL Research, Chalk River Laboratories, Chalk River

Document Type

Article

Publication Date

1-1-1996

Publication Source

Physical Review C

Volume Number

53

Issue Number

1

First Page

R5

Last Page

R8

Publisher

American Physical Society

Abstract

The charge distributions and their dependence on fragment multiplicity have been studied for the multifragmentation of 30 MeV/nucleon Xe+Au, Cu. For both targets, the charge distributions are approximately independent of the fragment multiplicity n. However, a residual systematic dependence on n is detectable at the largest values of the total charge multiplicity Nc. Such n dependence obeys a simple scaling law and suggests the presence of an entropic term possibly related to the mechanism of multifragmentation. Thermal scaling between the different bins of Nc seems to occur.

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