Fragmentation of 1.2 A GeV $^7$Be nuclei in nuclear photographic emulsion

TL;DR

This study investigates the fragmentation patterns of 1.2 A GeV $^7$Be nuclei in nuclear emulsion, revealing specific dissociation channels and the contribution of cascade decays to the observed fragmentation.

Contribution

It provides detailed analysis of $^7$Be fragmentation channels and quantifies the role of cascade decays in the fragmentation process.

Findings

Identified main fragmentation channels of $^7$Be nuclei.

Quantified the contribution of cascade decay $^6$Be$ ightarrow ^4$He + 2p.

Found that about 27% of $^7$Be$ ightarrow ^4$He + 2$^1$H events involve $^6$Be cascade decay.

Abstract

The charge topology of peripheral fragmentation of 1.2 A GeV $^7$Be nuclei in a nuclear emulsion is presented. The dissociation of $^7$Be nuclei via the channels $^7$Be$\rightarrow ^4$He + $^3$He, $^7$Be$\rightarrow$2$^3$He + n and $^7$Be$\rightarrow ^4$He + 2$^1$H is considered in detail. It is found that in the channel $^7$Be$\rightarrow ^4$He + 2$^1$H, events related to the channel $^7$Be$\rightarrow ^6$Be + n with the cascade decay $^6$Be$\rightarrow ^4$He + 2p account for about 27 %.