Lead Projectile Fragmentation on Aluminum Target: Improved Experimental Results

Abstract

We investigate 158A GeV 207Pb projectile fragmentation on Al target using CR-39 nuclear track detectors. A stack containing target-detectors assembly was irradiated at SPS-CERN. After chemical etching, detectors were scanned using an optical microscope to collect the data in the form of etched cone heights. From the cone height measurements, total and partial charge changing cross sections of 207Pb projectiles on aluminum target are determined. The results are compared with both relevant published measurements available in the literature and model predictions. Odd-even effect in the formation of the fragments of 158A GeV 207Pb pro-jectiles is observed in a consistent and a clear manner over the observed range of fragments (Z=63-81). This is achieved by using optimized etching and track measurement conditions

Nuclear Track Detectors for Relativistic Nuclear Fragmentation Studies: Comparison with Other Competitive Techniques

“…Monopole and Exotics Detector at the LHC (MoEDAL) aims to search for MMs at CERN LHC [48]. Co-use of NTDs with other techniques [49][50][51][52][53] would enhance their use for cosmic rays and other exotic particle searches for which they are most suitable due to experimental simplicity, light weight and low cost. Figure 9 is an artistic portraying of the finding reported in paper and related.…”