Speaker
Nader Morshedian
Description
See the full Abstract at http://ocs.ciemat.es/EPS2018ABS/pdf/P1.3007.pdf
Shadowgraphy of the Plasma Plume Expansion for Aluminum- and Mylar-
Foil Targets under the Interaction of Nanosecond Laser Pulse
Nader, Morshedian
Research School of Plasma and Fusion, Nuclear Science and Technology Research Institute,
P.O.Box: 14399-51113, Tehran-Iran
nmorshed@aeoi.org.ir
Abstract
The behavior of plasma plumes expansion of two, metal and polymer foil targets have been
studied by shadowgraphy technique at atmospheric ambient gas pressure. The interaction
beam of a Nd:YAG laser with average 30 ns pulse width and maximum 160 – 300 mJ laser
energy focused on the Aluminum- and Mylar foil target and the plasma evolution both in the
front and rare of the target were investigated. A laser probe beam with 8 ns pulse width, at
wavelength 532 nm scans the plasma plume expansion and the signals are registered on a
CCD camera up to 400 ns after the interaction time. The plume expansion velocity has been
obtained at maximum value velocity for both of front and rare side of Al foil target, as 8×
107cm/s and 3.8× 106 cm/s respectively. In addition, for Mylar foil target, these values are
1.6 × 106 cm/s and 7 × 105 cm/s respectively.
