Observation and Simulation of Effects on Parylene Disks Irradiated at High Intensities with a 1.06-μm Laser

Abstract

Parylene (${\mathrm{C}}_{8}$${\mathrm{H}}_{8}$) disks have been irradiated with a 1.06-\ensuremath{\mu}m laser at fluxes of ${10}^{15}$-${10}^{17}$ W/${\mathrm{cm}}^{2}$. The spatial and temporal scattered light distributions, x-ray spatial and spectral emission properties, and ion spatial and energy distributions were measured. The results, together with two-dimensional magnetohydrodynamic code simulations, imply absorption via collective processes, laser generation of suprathermal electrons, and transport inhibition consistent with the presence of megagauss-level thermoelectric magnetic fields.