Non-thermal x-ray emission from wire array z-pinches
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Imperial College, London (United Kingdom)
- Naval Research Lab. (NRL), Washington, DC (United States)
- Artep Inc., Ellicott City, MD (United States)
We report on experiments demonstrating the transition from thermally-dominated K-shell line emission to non-thermal, hot-electron-driven inner-shell emission for z pinch plasmas on the Z machine. While x-ray yields from thermal K-shell emission decrease rapidly with increasing atomic number Z, we find that non-thermal emission persists with favorable Z scaling, dominating over thermal emission for Z=42 and higher (hn ≥ 17keV). Initial experiments with Mo (Z=42) and Ag (Z=47) have produced kJ-level emission in the 17-keV and 22-keV Kα lines respectively. We will discuss the electron beam properties that could excite these non - thermal lines. We also report on experiments that have attempted to control non - thermal K - shell line emission by modifying the wire array or load hardware setup.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 1227914
- Report Number(s):
- SAND2015-10453; 614656
- Country of Publication:
- United States
- Language:
- English
Similar Records
Studying Radiation from Z-pinch Wire Array and X-Pinch Plasmas: K-shell Mg to M-shell Mo
Opacity and gradients in aluminum wire array z-pinch implosions on the Z pulsed power facility