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Title: ZAPP: The Z Astrophysical Plasma Properties collaboration

The Z Facility at Sandia National Laboratories [Matzen et al., Phys. Plasmas 12, 055503 (2005)] provides MJ-class x-ray sources that can emit powers >0.3 PW. This capability enables benchmark experiments of fundamental material properties in radiation-heated matter at conditions previously unattainable in the laboratory. Experiments on Z can produce uniform, long-lived, and large plasmas with volumes up to 20 cc, temperatures from 1–200 eV, and electron densities from 10{sup 17–23} cc{sup −1}. These unique characteristics and the ability to radiatively heat multiple experiments in a single shot have led to a new effort called the Z Astrophysical Plasma Properties (ZAPP) collaboration. The focus of the ZAPP collaboration is to reproduce the radiation and material characteristics of astrophysical plasmas as closely as possible in the laboratory and use detailed spectral measurements to strengthen models for atoms in plasmas. Specific issues under investigation include the LTE opacity of iron at stellar-interior conditions, photoionization around active galactic nuclei, the efficiency of resonant Auger destruction in black-hole accretion disks, and H-Balmer line shapes in white dwarf photospheres.
Authors:
; ; ; ;  [1] ; ;  [2] ; ;  [3] ;  [4]
  1. Sandia National Laboratories, P.O. Box 5800, Albuquerque, New Mexico 87185 (United States)
  2. University of Nevada, Reno, 1664 N. Virginia St., Reno, Nevada 89557 (United States)
  3. University of Texas, Austin, 2515 Speedway, Austin, Texas 78712 (United States)
  4. Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550 (United States)
Publication Date:
OSTI Identifier:
22252834
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ACCRETION DISKS; ASTROPHYSICS; BALMER LINES; BLACK HOLES; ELECTRON DENSITY; GALAXY NUCLEI; LTE; OPACITY; PHOTOIONIZATION; PHOTOSPHERE; PLASMA; WHITE DWARF STARS; X-RAY SOURCES