Weak and strong factorization properties in nucleus-nucleus collisions in the energy region 290–2100 MeV/n
Artikel i vetenskaplig tidskrift, 2007

We have collected from the literature partial charge-changing cross sections for projectiles with charge 6<=Z<=26, energy ranging from 290 up to 2100 MeV/nucleon and interacting with several targets, in order to investigate weak and strong factorization properties. The same analysis methods as in our previous work have been applied to the data: we have shown that, except for hydrogen targets, weak and strong factorization properties are valid within 5%, thus confirming the results obtained in the first paper [C. La Tessa, et al., Test of weak and strong factorization in nucleus–nucleus collisions at several hundred MeV/nucleon, Nucl. Phys. A, in press]. Factorization parameters have been calculated and, in particular, target factors have been expressed with ad hoc analytical functions which describe the data trend very well. New expressions for weak and strong factorization properties can then be obtained by substituting the target factors with these functions: this formulation partially isolates the dependence of the partial charge-changing cross sections on the target and projectile mass numbers; moreover, fragment factors are the only parameters left in the formulas thus facilitating the future task of interpolating them with appropriate analytical expressions.

Weak factorization

Heavy ions

Projectile charge-changing cross section

Strong factorization

Författare

Chiara La Tessa

Chalmers, Teknisk fysik, Nukleär teknik

Lembit Sihver

Chalmers, Teknisk fysik, Nukleär teknik

C. Zeitlin

Chalmers University of Technology

J. Miller

Lawrence Berkeley National Laboratory

S. Guetersloh

Lawrence Berkeley National Laboratory

L. Heilbronn

Lawrence Berkeley National Laboratory

Davide Mancusi

Chalmers, Teknisk fysik, Nukleär teknik

Nuclear Physics A

0375-9474 (ISSN)

Vol. 791 3–4 451-472

Ämneskategorier

Subatomär fysik

DOI

10.1016/j.nuclphysa.2007.04.025