Fragmentation cross sections of Fe^{26+}, Si^{14+} and C^{6+} ions of 0.3-10 A GeV on polyethylene, CR39 and aluminum targets

TL;DR

This paper reports new measurements of fragmentation cross sections for Fe, Si, and C ions on various targets across a broad energy range, revealing energy independence and target dependence.

Contribution

It provides the first comprehensive data set of total and partial fragmentation cross sections for these ions on polyethylene, CR39, and aluminum targets over 0.3-10 A GeV.

Findings

Total fragmentation cross sections are energy independent.

Cross sections depend on target mass.

Partial fragmentation cross sections are characterized.

Abstract

We present new measurements of the total and partial fragmentation cross sections in the energy range 0.3-10 A GeV of 56Fe, 28Si and 12C beams on polyethylene, CR39 and aluminum targets. The exposures were made at BNL, USA and HIMAC, Japan. The CR39 nuclear track detectors were used to identify the incident and survived beams and their fragments. The total fragmentation cross sections for all targets are almost energy independent while they depend on the target mass. The measured partial fragmentation cross sections are also discussed.