High speed plasma diagnostics for laser plasma interaction and fusion studies

Abstract

Laser plasma interaction and fusion studies involve many high speed plasma diagnostics to determine the various parameters for explaining the physical processes taking place in plasma. Detection and analysis of short-term or transient radiations (X-ray and visible) are the bases for diagnosing the physical processes occurring during laser-plasma interaction or similar radiation-emitting processes. This paper reviews the development of various high speed plasma diagnostics which are not only applicable in determining the temporal, spatial and spectral properties of X-rays for this purpose but also have wide use in various other fields of research.

Current Voltage Characteristic of Planar Langmuir Probe in Ionospheric Maxwellian Plasma

“…Although many plasma diagnostic methods have been developed since the original work of Irving Langmuir, the Langmuir probe is still one of the most powerful plasma diagnostic tools due to its simplicity, low cost, adaptability, ability to determine the fundamental characteristics of a plasma. A Langmuir probe may have any geometry, but cylindrical, spherical, and planar probes are usually employed because of their symmetry [11]. The basis for T e measurements is the conventional Langmuir probe theory of Mott-Smith and Langmuir, assuming a Maxwellian energy distribution F(E) given by,…”

Design and performance characteristics of an electromagnetic interference shielded enclosure for high voltage Pockels cell switching system

“…For the above stated applications and several others (Rai et al 1999), switching of very high voltage with a rise time of the order of a nanosecond is required. In the case of regenerative amplifier , the pulse selection, injection, and ejection are usually done using KD*P based Pockels cells as electro-optic switches, which require switching of high voltage (3·6 kV) electrical pulses in a short time of ∼ 1 ns.…”