Simultaneous imaging electron- and ion-feature Thomson scattering measurements of radiatively heated Xe

Journal Article · Mon Oct 15 00:00:00 EDT 2012 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4740526· OSTI ID:22093944

Pollock, B. B. ^[1]; Meinecke, J. ^[1]; Kuschel, S.; Ross, J. S.; Divol, L.; Glenzer, S. H. ^[1]; Shaw, J. L. ^[2]; Stoafer, C. ^[3]; Tynan, G. R. ^[4]

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1. Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, California 94550 (United States)
2. University of California, Los Angeles, 405 Hilgard Ave., Los Angeles, California 90095 (United States)
3. Columbia University, 116th Street and Broadway, New York, New York 10027 (United States)
4. University of California, San Diego, 9500 Gilman Dr., La Jolla, California 92093 (United States)

Uniform density and temperature Xe plasmas have been produced over >4 mm scale-lengths using x-rays generated in a cylindrical Pb cavity. The cavity is 750 {mu}m in depth and diameter, and is heated by a 300 J, 2 ns square, 1054 nm laser pulse focused to a spot size of 200 {mu}m at the cavity entrance. The plasma is characterized by simultaneous imaging Thomson scattering measurements from both the electron and ion scattering features. The electron feature measurement determines the spatial electron density and temperature profile, and using these parameters as constraints in the ion feature analysis allows an accurate determination of the charge state of the Xe ions. The Thomson scattering probe beam is 40 J, 200 ps, and 527 nm, and is focused to a 100 {mu}m spot size at the entrance of the Pb cavity. Each system has a spatial resolution of 25 {mu}m, a temporal resolution of 200 ps (as determined by the probe duration), and a spectral resolution of 2 nm for the electron feature system and 0.025 nm for the ion feature system. The experiment is performed in a Xe filled target chamber at a neutral pressure of 3-10 Torr, and the x-rays produced in the Pb ionize and heat the Xe to a charge state of 20{+-}4 at up to 200 eV electron temperatures.

• OSTI ID: 22093944
• Journal Information: Review of Scientific Instruments, Vol. 83, Issue 10; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BEAMS
CHARGE STATES
ELECTRON DENSITY
ELECTRON TEMPERATURE
ION TEMPERATURE
LASER RADIATION
PLASMA
PLASMA DENSITY
PLASMA DIAGNOSTICS
PLASMA PRODUCTION
SPATIAL RESOLUTION
TARGET CHAMBERS
THOMSON SCATTERING
X RADIATION
XENON IONS