2025/09/08 by Mingzhe Yang, Yang, Mingzhe, wang, Ziyao +58
Engineering · Physics and Astronomy · #Accelerator Physics (physics.acc-ph) #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Ion-surface interactions and analysis #Laser-Plasma Interactions and Diagnostics #Laser-induced spectroscopy and plasma
paper · pdf · doi:10.48550/arxiv.2509.06581
openalex publication_date 2025/09/08 · openalex created_date 2025/10/11 · openalex updated_date 2026/07/28
We explored the generation and diagnosis of high-brightness MeV bremsstrahlung radiation caused by intense beam of relativistic electrons propagating in a tantalum converter. The intense electron beam was produced through direct laser acceleration mechanism in the interaction of relativistic high-power sub-ps laser pulse with near critical density plasma. We propose to detect the divergence angle and photon fluence of high-brightness and high-energy gamma radiation source based on the nuclear activation method. The radioactive 62Cu was generated through photonuclear reactions 63Cu(gamma,n) 62Cu and the subsequent beta+ decay of 62Cu was measured to derive characteristics of the gamma radiation source. This method provides an express approach to diagnose the laser-driven MeV radiation source and a potential efficient way to produce 62Cu isotopes.