Physics – Plasma Physics
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ppcf...49..117s&link_type=abstract
Plasma Physics and Controlled Fusion, Volume 49, Issue 12B, pp. B117-B124 (2007).
Physics
Plasma Physics
6
Scientific paper
Strong shocks and blast wave collisions are commonly observed features in astrophysical objects such as nebulae and supernova remnants. Numerical simulations often underpin our understanding of these complex systems, however modelling of such extreme phenomena remains challenging, particularly so for the case of radiative or colliding shocks. This highlights the need for well-characterized laboratory experiments both to guide physical insight and to provide robust data for code benchmarking. Creating a sufficiently high-energy-density gas medium for conducting scaled laboratory astrophysics experiments has historically been problematic, but the unique ability of atomic cluster gases to efficiently couple to intense pulses of laser light now enables table top scale (1 J input energy) studies to be conducted at gas densities of >1019 particles cm-3 with an initial energy density >5 × 109 J g-1. By laser heating atomic cluster gas media we can launch strong (up to Mach 55) shocks in a range of geometries, with and without radiative precursors. These systems have been probed with a range of optical and interferometric diagnostics in order to retrieve electron density profiles and blast wave trajectories. Colliding cylindrical shock systems have also been studied, however the strongly asymmetric density profiles and radial and longitudinal mass flow that result demand a more complex diagnostic technique based on tomographic phase reconstruction. We have used the 3D magnetoresistive hydrocode GORGON to model these systems and to highlight interesting features such as the formation of a Mach stem for further study.
Chittenden Jeremy P.
Dunne Mike
Gumbrell Edward T.
Hohenberger Matthias
Lazarus James
No associations
LandOfFree
High resolution imaging of colliding blast waves in cluster media 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 High resolution imaging of colliding blast waves in cluster media, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High resolution imaging of colliding blast waves in cluster media will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1027215