Diagnostic development and needs for laser driven MeV x-ray radiography

D R Rusby; G J Williams; S M Kerr; A Aghedo; D Alessi; S Anderson; M Hill; I Rodger; M Rubery; M P Selwood; F Treffert; A J Mackinnon

doi:10.1063/5.0219493

Diagnostic development and needs for laser driven MeV x-ray radiography

Rev Sci Instrum. 2024 Dec 1;95(12):123512. doi: 10.1063/5.0219493.

Authors

D R Rusby¹, G J Williams¹, S M Kerr¹, A Aghedo^{1

2}, D Alessi¹, S Anderson¹, M Hill¹, I Rodger^{1

3}, M Rubery¹, M P Selwood¹, F Treffert¹, A J Mackinnon¹

Affiliations

¹ Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
² Department of Physics, Florida A&M University, Tallahassee, Florida 32307, USA.
³ Department of Physics, Durham University, Durham DH1 3LE, United Kingdom.

PMID: 39665600
DOI: 10.1063/5.0219493

Abstract

Laser-driven MeV x-ray radiography of dynamic, dense objects demands a small, high flux source of energetic x-rays to generate an image with sufficient quality. Understanding the multi-MeV x-ray spectrum underscores the ability to extrapolate from the current laser sources to new future lasers that might deploy this radiography modality. Here, we present a small study of the existing x-ray diagnostics and techniques. We also present work from National Ignition Facility-Advanced Radiographic Capability, where we deploy three diagnostics to measure the x-ray spectrum up to 30 MeV. Finally, we also discuss the needs and developments of two new diagnostics: a single crystal scintillator spectrometer and a fast decay activation.