Spatially and temporally resolved crystal spectrometer for diagnosing high temperature pinch plasmas on Z
The authors have developed a spatially and temporally resolved crystal spectrometer for analyzing a variety of pinch experiments on Z. The spectrometer uses a convex curved crystal to disperse spectra onto a flat microchannel plate framing camera detector. A single wide, 1 cm, strip on the MCP is gated to provide temporal resolution. The spectral range governed by the 4 cm length of the MCP strip varies with the central Bragg angle and crystal. For a KAP crystal a typical range is 1500 to 2000 eV. This range can be shifted by translating the crystal along the optical axis to access different Bragg angles. The spectrometer can therefore measure K shell spectra of a wide variety of elements such as Al, Ti, and Fe. The short 1 cm width of the strip is spatially resolved with an imaging cross slit. With a 500 microns cross slit and magnification 1 the spatial resolution at the pinch is 1 mm. The instrument may also be fielded with 7 time frames using a 7 strip-line microchannel plate as the detector by sacrificing the spatial resolution. The authors will present data obtained from an aluminum pinch on Z.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 672039
- Report Number(s):
- SAND--98-0321C; CONF-980605--; ON: DE98005527; BR: DP0102012
- Country of Publication:
- United States
- Language:
- English
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