High Repetition Rate Investigation of the Biermann Battery Effect in Laser Produced Plasmas Over Large Spatial Regions

POSTER

Abstract

The Biermann Battery effect is a mechanism of magnetic field generation in both astrophysical phenomena and laser produced plasmas (LPPs). We present data from a high repetition rate (HRR) experiment examining the spatial structure and evolution of such fields. Data was taken at a repetition rate of 1 Hz over large volumetric regions producing detailed data sets containing thousands of points.  Measurements show azimuthally symmetric magnetic fields with peak magnitudes of up to 60 G in our closest measurements, 7 mm from the target surface. The current densities in the system were determined by taking the curl of the measured magnetic fields. We additionally present optical Thomson scattering measurements of electron temperature and density within our system.

*This work is supported by the NSF GRFP under award number DGE-1650604, the DOE under award number DE-SC0019011 and DE-SC0021133 and the NNSA Center for Matter Under Extreme Conditions under Award Number DE-NA0003842.

Presenters

  • Jessica J Pilgram

    • University of California, Los Angeles

Authors

  • Jessica J Pilgram

    • University of California, Los Angeles

  • Carmen G Constantin

    • UCLA
    • University of California, Los Angeles

  • Robert S Dorst

    • University of California, Los Angeles

  • Marissa B Adams

    • University of Rochester

  • Petros Tzeferacos

    • University of Rochester

  • Peter V Heuer

    • Laboratory for Laser Energetics
    • Laboratory for Laser Energetics, U. of Rochester

  • Derek B Schaeffer

    • Princeton University
    • University of California, Los Angeles
    • Princeton University, USA

  • Marietta Kaloyan

    • University of California, Los Angeles

  • Sofiya Ghazaryan

    • University of California, Los Angeles

  • Christoph Niemann

    • University of California, Los Angeles