Opacity Measurements on Fully Characterized 1.3 MK Titanium Plasmas

Details Opacity Measurements on Fully Characterized 1.3 MK Titanium Plasmas Opacity Measurements on Fully Characterized 1.3 MK Titanium Plasmas

Nov 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aps..dppto7007h&link_type=abstract

American Physical Society, 51st Annual Meeting of the APS Division of Plasma Physics, November 2-6, 2009, abstract #TO7.007

Physics

Plasma Physics

Scientific paper

X-ray transmission spectra from fully characterized, high temperature plasmas provide validation benchmarks for high-energy-density physics models of interest to stellar astrophysics. This work presents new data from experiments at the Omega laser. 24 beams (at 500J/beam) heat the outer chambers of a 3-part (shine-shielded), 1.6 mm diameter hohlraum. The outer chambers radiatively heat a CH-tamped Ti foil in the center. Other beams drive 2 backlighters: a rear wall burnthrough halfraum, and a Kr-filled CH capsule implosion. Looking through the sample to these backlighters, 2 spectrometers measure the sample transmission from 250-1600 eV and 3000-5500 eV, respectively. The lower energy band encompasses the Rosseland mean opacity, governing radiation flow in stellar interiors. Plasma density of 0.05 g/cc, measured by expansion radiography, agrees with pre-shot calculations. Plasma temperature of 110-125 eV (1.3 MK), inferred from n=1 to n=2 titanium absorption lines, is 10-30% below predictions. Use of similar techniques on the National Ignition Facility could validate stellar models in stellar core conditions.

Affiliated with

Also associated with

No associations

Rating

Opacity Measurements on Fully Characterized 1.3 MK Titanium Plasmas does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Opacity Measurements on Fully Characterized 1.3 MK Titanium Plasmas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Opacity Measurements on Fully Characterized 1.3 MK Titanium Plasmas will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1536701