Ride-along Z data on XRS3, z3308 z3309 photoionized Fe spectra and Satire wire array spectrum, z3147 [PowerPoint]
Data is shown for z3308 z3309 photoionized Fe spectra and z3147 satire SS spectrum collected for Ryan Childers (Univ. of Nevada, Reno).
Publications
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Jump to search filtersBlack hole accretion disc radiation
Abstract not provided.
First experimental assessment of the Z opacity sample evolution using time-resolved spectroscopy with a gated hybrid CMOS detector
Abstract not provided.
Photoionized plasma experiment for accretion-powered sources
Abstract not provided.
Opacity measurements at solar interior conditions: Systematic study of L-shell opacities
Abstract not provided.
ZAPP: Z Astrophysical Plasma Property Collaboration
Abstract not provided.
A benchmark Experiment for X-ray Emission and Temperature Diagnostics in Accretion-Powered Photoionized Plasmas
Abstract not provided.
Ride-along Z data LOS 130 LOS 170 and LOS 330 for university collaborators. ZAPP19a shots z3364 and z3365 [PowerPoint]
The short presentation includes the shot sequence, an anode overview, and specific shots.
Ride-along Z data LOS 170 and LOS 330 for university collaborators. Opacity 18b shot z3308, ZAPP18a shot Z3309 [Slides]
Each instrument recorded the x-ray emission from the Z-pinch dynamic hohlraum (ZPDH): LOS 330 TREX 6A & B: recorded time resolved and time integrated absorption spectra from a radiatively heated Ne gas; and, LOS 170 are LM monochromatic and high-pass imagers, imaging the Z-pinch before and near stagnation.
A Methodology for Determining Self-Consistency of Stark Broadening Predictions in a Multi-Element HED Plasma
Abstract not provided.
Experiments for Photoionized Plasma Emission from Accretion-Powered X-Ray Sources
Abstract not provided.
A compact multi-plane broadband (0.5-17 keV) spectrometer using a single acid phthalate crystal
Review of Scientific Instruments
Acid phthalate crystals such as KAP crystals are a method of choice to record x-ray spectra in the soft x-ray regime (E ∼ 1 keV) using the large (001) 2d = 26.63 Å spacing. Reflection from many other planes is possible, and knowledge of the 2d spacing, reflectivity, and resolution for these reflections is necessary to evaluate whether they hinder or help the measurements. Burkhalter et al. [J. Appl. Phys., 52, 4379 (1981)] showed that the (013) reflection has efficiency comparable to the 2nd order reflection (002), and it can overlap the main first order reflection when the crystal bending axis (b-axis) is contained in the dispersion plane, thus contaminating the main (001) measurement in a convex crystal geometry. We present a novel spectrograph concept that makes these asymmetric reflections helpful by setting the crystal b-axis perpendicular to the dispersion plane. In such a case, asymmetric reflections do not overlap with the main (001) reflection and each reflection can be used as an independent spectrograph. Here we demonstrate an achieved spectral range of 0.8-13 keV with a prototype setup. The detector measurements were reproduced with a 3D ray-tracing code.
Ride-along Z data LOS 130, 170 and LOS 330 for university collaborators. Opacity 18b shots z3285, 3286 and z3287
Shot sequences are described, followed by images.
Opacity data for stellar models and its uncertainties
Abstract not provided.
Self-Consistency of Stark Broadening Predictions in a Multi-Element HED Plasma
Abstract not provided.
A benchmark experiment for x-ray emission and temperature diagnostics in accretion-powered photoionized plasmas
Abstract not provided.
MULTI-ELEMENT STARK BROADENING FOR DIAGNOSING ELECTRON DENSITY IN HED PLASMAS
Abstract not provided.
Opacity data for stellar models and its uncertainties
Abstract not provided.
A benchmark experiment for x-ray emission and temperature diagnostics in accretion-powered photoionized plasmas
Abstract not provided.
Photoionized silicon experiments on Z
Abstract not provided.
MULTI-ELEMENT STARK BROADENING FOR DIAGNOSING ELECTRON DENSITY IN HED PLASMAS
Abstract not provided.
Sandia National Labs 20kV Henke X-ray Source
Abstract not provided.
A multi-spectrograph using non-overlapping asymmetric diffraction from a single KAP crystal
Abstract not provided.
Opacity data for stellar models and its uncertainties
Abstract not provided.
Ride-along data LOS 130, 170 & LO330 shots z3139, 3140 and 3141
Each instrument records the x-ray emission from the Z-pinch dynamic hohlraum (ZPDH); LOS 130 TIXTLs instruments record the absorption of the pinch backlighter through an expanding NaF/Mg foil; LOS 170 MLM instruments record monochromatic images at 276 and 528 eV energies near and before ZPDH stagnation time; LOS 330 TREX 6A & B: recoded time resolved absorption spectra from a radiatively heated Ne gas.
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