Spectral unfold techniques for z-pinch implosions
- Los Alamos National Lab., NM (United States)
- Sandia National Labs., Albuquerque, NM (United States)
Sandia National Laboratories recently upgraded Z machine has rapidly matured into a high power (>200 TW), high temperature (>120 eV) driver for radiation physics experiments. One of the methods used to determine the driver conditions are arrays of filtered silicon photodiodes (SiD) and filtered photocathode x-ray diodes (XRD). Three different techniques for unfolding spectra from the XRD and SiD detector data have been used. They are: (1) Treat each detector independently and find the Planckian temperature for a given source size and solid angle that would give the measured detector signal, (2) Use all detector signals and detector spectral responses and find a spectrum that best fits the observed data, (3) Use all detector signals and averaged detector spectral responses and find a histogram spectrum that best fits the observed data. Each technique yields important information about the radiation output of the z-pinch however each also has drawbacks. Despite the drawbacks when used as complementary set of analysis tools they generate remarkably consistent results showing nearly Planckian behavior on the hohlraum experiments.
- OSTI ID:
- 338538
- Report Number(s):
- CONF-980601-; TRN: 99:005825
- Resource Relation:
- Conference: 25. international conference on plasma science, Raleigh, NC (United States), 1-4 Jun 1998; Other Information: PBD: 1998; Related Information: Is Part Of IEEE conference record -- Abstracts. 1998 IEEE international conference on plasma science; PB: 343 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Characterization of axially directed x rays generated from a target within a high-power z-pinch (abstract)
Use of a priori spectral information in the measurement of x-ray flux with filtered diode arrays