TY - JOUR
AU - Shlyaptsev, Vyacheslav N.
AB - We report an extension of previous tabletop soft x-ray laser interferometry work to plasma densities approaching the critical density. The evolution of line-focus and spot-focus plasmas created with Nd-YAG laser intensities of 0.1 and 7.0 TW/cm 2 respectively were studied utilizing a 46.9-nm capillary discharge laser with a diffraction grating interferometer. In the latter case, the electron density was mapped to values up to 0.9x10 21 cm -3 (90% of the critical density for the lambda equals 1.06 micrometers pump laser). The interferograms show the development of concave electron density profiles with a minimum on axis and pronounced side lobes. Hydrodynamic model simulations show that the concave profile is the result of the hydrodynamic and radiation effects that enlarge the ablated target area. The measurements exemplify how soft x-ray lasers can be used to probe high density plasmas for the validation of hydrodynamic codes.
TI - Advances in dense-plasma interferometry with a tabletop capillary discharge soft x-ray laser
JO - Proceedings of SPIE
DO - 10.1117/12.450594
DA - 2001-12-12
UR - https://www.deepdyve.com/lp/spie/advances-in-dense-plasma-interferometry-with-a-tabletop-capillary-RwOPk3k5pG
SP - 221
EP - 229
VL - 4505
IS - 1
DP - DeepDyve
ER -