Speaker
Description
Nuclear fragmentation first observed in photographic emulsions exposed to cosmic rays and is now studied with greater precision using nuclear track emulsion (NTE) irradiated by relativistic muons. This approach offers a unique way to investigate multi-fragmentation processes induced purely by electromagnetic interactions [1]. Within the BECQUEREL experiment [2], we examined μ-nucleus interactions in NTE, focusing on short-range α-particle tracks arising from the 3α breakup of carbon nuclei in μ + ¹²C → 3α reactions. Alpha particle kinetic energies were reconstructed for each event by simulating their ionization energy losses in NTE with SRIM software, while full 4π-geometry track reconstruction allowed precise determination of emission angles. These measurements facilitated the extraction of combinatorial invariant mass spectra for 2 and 3 α systems, offering new insights into the dynamics of μ-induced nuclear fragmentation and the mechanisms of α-particle emission.
References
1. D. A. Artemenkov, V. Bradnova, et al., Phys. At. Nucl. 78, 579-585 (2015), doi:10.1134/S106377881504002X [arXiv:1407.4572].
2. P. I. Zarubin, Lect. Notes Phys. 875, 51-93 (2014), doi: 10.1007/978-3-319-01077-9_3 [arXiv:1309.4881].
