Tandem puff-on-wire experiments on ACE 4
- Maxwell Labs., San Diego, CA (United States)
- Univ. of California, Irvine, CA (United States). Dept. of Physics
- Univ. of San Diego, CA (United States). Dept. of Physics
Prior experiments showed enhanced soft ({approximately}1 keV) and significant hard (>6 keV) x-ray output for aluminum plasma jet implosions that included a central metal wire. In an effort to confirm those results and to establish the operative physical processes, the authors adapted the puff-on-wire geometry to the tandem puff load on the 4 MJ ACE 4 inductive energy storage (IES) machine. Most of the experiments used an 11 centimeter diameter neon gas puff surrounding central fine (25--75 micron diameter) wires of copper, molybdenum, silver and tungsten. In addition to standard soft radiation sensors (calorimeters, XRDs, PCDs, etc.), the diagnostics included a nine channel silicon PIN diode spectrometer covering the range from {approximately}6 to over 300 keV. Peak current into the load exceeded 3 megamps. The authors do not see increased soft and hard x-ray output when a central wire is in place. Time resolved data show that the soft and hard x-ray components begin at the same time but their evolutions vary with wire atomic number. The time scale of the hard radiation exceeds 100 ns. The hard x-ray yield increases with wire atomic number.
- OSTI ID:
- 182742
- Report Number(s):
- CONF-950612--; ISBN 0-7803-2669-5
- Country of Publication:
- United States
- Language:
- English
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