Electronic system for Langmuir probe measurements
نویسندگان
چکیده
منابع مشابه
Langmuir probe
Langmuir probes have been installed on satellites and sounding rockets to observe the general characteristics of thermal plasma in the ionosphere for more than five decades. Because of its simplicity and convenience, the Langmuir probe is one of the most frequently installed scientific instruments on spacecraft. While the algorithm to estimate the temperature and number density of thermal elect...
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Sheath motion, displacement current, and probe edge effects on temporal Langmuir probe ~LP! ion saturation current measurements are investigated for a pulsed laser produced plasma during the period 100 ns→1000 ns after the turn on of the laser pulse. The plasma has a large volume ~hundreds of cm! and a high initial plasma density (ne.10 13 cm). The sheath motion and edge effects are found to be...
متن کاملLangmuir probe measurements in an expanding magnetized plasma.
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متن کاملThe Langmuir Probe
INTRODUCTION: The Langmuir probe is a diagnostic device used to determine several basic properties of a plasma, such as temperature and density. A plasma is a state of matter which contains enough free (not bound to an atom) charged particles (electrons and ions) so that its dynamical behavior is dominated by electromagnetic forces. The subject of plasma physics is concerned mainly with ionized...
متن کاملLangmuir probe analysis for high density plasmas
High-density, radio-frequency plasmas used in semiconductor processing have progressed to densities n>5310 cm, where the methods used to interpret Langmuir probe characteristics in low-density (10 – 11 cm) plasma reactors are no longer valid. Though theory and computations for arbitrarily dense collisionless plasmas exist, they are difficult to apply in real time. A new parametrization and iter...
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ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2012
ISSN: 1742-6596
DOI: 10.1088/1742-6596/356/1/012008