Abstract Details
Proton Radiography of Electromagnetic Fields in Laser-Plasma Interactions and Areal Density in Imploded Capsules
Author: richard petrasso
Requested Type: Oral Only
Submitted: 2009-04-21 17:56:35
Co-authors: C. K. Li, F. H. Séguin, J. A. Frenje, M. Manuel, D. Casey, N. Sinenian, M. Rosenberg, H. Rinderknecht, P. A. Amendt, O. L. Landen, J. R. Rygg, R. P. J. Town, R. Betti, J. Delettrez, J. P. Knauer, F.J. Marshall, D. D. Meyerhofer, T.C. Sangster, D. Shvarts, V. A. Smalyuk, J. M. Soures, C. A. Back, J. D. Kilkenny, and A. Nikroo
Contact Info:
mit
175 albany st
cambridge, ma 02139
usa
Abstract Text:
An isotropic monoenergetic proton backlighter source with matched detector has been utilized on the OMEGA laser system to accurately and sensitively study the following: First, MG fields generated by laser plasma interactions (1, 2), both in the growth and decay phase, the latter associated with the development of 2-d symmetry breaking instabilities; Second, the reconnection of MG fields of interacting laser generated magnetic bubbles (3); Third, the fields and areal density evolution for cone-in-shell implosions (4); Fourth, the fields and areal density evolution of spherical implosions5; And fifth, fields in and about hohlraums6. During implosions, mottled, complex field structures are sometimes observed. Because of the precise energy of the 14.7 (3.0) MeV P and 3.5 MeV alpha backlighter particles, a result of the fusion reaction of D and 3He (and DD) in an exploding pusher, a quantitative relationship can be established between particle energy loss (through stopping power) or between deflections (via the Lorentz force). Results of these experiments, as well as those currently being planned, such as the search for fields in labastro experiments, will be presented.
Contract DE-FG52-2005NA26011; and UR/FSC Contract 412761-G .
1. C. K. Li et al, PRL 97 2006 ; 2. C. K. Li et al, PRL 99 2007; 3. C. K. Li et al, PRL 99 2007; 4. J. R. Rygg et al , Science 319, 2008; 5. C. K. Li et al, PRL 100, 2008. C. K. Li et al, submitted to PRL.
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