Opacity measurements of tamped NaBr samples heated by z-pinch X-rays
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- CEA-DIF, Bruyeres-Le-Chatel (France)
- Commissariat a l'Energie Atomique et aux Energies Alternatives (CEA-Saclay), Gif-sur-Yvette (France)
- Prism Computational Sciences, Madison, WI (United States)
- Univ. of Nevada, Reno, NV (United States). Dept. of Physics
- K-Tech Corporation, Albuquerque, NM (United States)
Laboratory measurements provide benchmark data for wavelength-dependent plasma opacities to assist inertial confinement fusion, astrophysics, and atomic physics research. There are several potential benefits to using z-pinch radiation for opacity measurements, including relatively large cm-scale lateral sample sizes and relatively-long 3–Full-size image (<1 K) experiment durations. These features enhance sample uniformity. We measured the spectrally resolved transmission through a CH-tamped NaBr foil. The z-pinch produced the X-rays for both the heating source and backlight source. Furthermore, we determined the (50±4) eV foil electron temperature and (3±1) x 1021 cm -3 foil electron density by analysis of the Na absorption features. LTE and NLTE opacity model calculations of the n=2 to 3, 4 transitions in bromine ionized into the M-shell are in reasonably good agreement with the data.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 889408
- Report Number(s):
- SAND2003-0057J; TRN: US0604415
- Journal Information:
- Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 81, Issue 1-4; ISSN 0022-4073
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
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