45 citations · 63 across the 9 of their papers we have counts for
9 papers
Background-Pressure Effects on Charge-Exchange Measurements in Plasma Flows at Elevated Pressures
Ivan Romadanov, Stanislav Musikhin, Je-Hoi Mun +2
Charge-exchange (CEX) collisions can affect measurements of plasma plumes and neutralized ion flows in vacuum facilities, particularly when the background gas pressure increases an…
Planar Laser-Induced Fluorescence system for Space and Phase-resolved Ion Velocity Distribution Function Measurements
Sung Hyun Son, Ivan Romadanov, Nirbhav Singh Chopra +1
In this work, we present a planar laser-induced fluorescence (PLIF) system for two-dimensional (2D) spatial and phase-resolved ion velocity distribution function (IVDF) measurement…
Mode transitions and spoke structures in ExB Penning discharge
M. Tyushev, M. Papahn Zadeh, N. S. Chopra +7
Two-dimensional particle-in-cell simulations in the (radial-azimuthal) plane perpendicular to the axial direction of a cylindrical ExB Penning discharge are presented. The low-pres…
Anticathode effect on electron kinetics in electron beam generated plasma
Nirbhav Singh Chopra, Ivan Romadanov, Yevgeny Raitses
Electron beam (e-beam) generated plasmas with applied crossed electric and magnetic fields are promising for low damage processing of ma…
Report on laser-induced fluorescence transitions relevant for the microelectronics industry and sustainability applications
V. S. Santosh K. Kondeti, Shurik Yatom, Ivan Romadanov +3
A wide variety of feed gases are used to generate low-temperature plasmas for the microelectronics and the sustainability applications. These plasmas often have a complex combinati…
Wavelength modulation laser-induced fluorescence for plasma characterization
Ivan Romadanov, Yevgeny Raitses, Andrei Smolyakov
Laser-Induced Fluorescence (LIF) spectroscopy is an essential tool for probing ion and atom velocity distribution functions (VDFs) in complex plasmas. VDFs carry information about…
A confocal laser-induced fluorescence diagnostic with a ring-shaped laser beam
I. Romadanov, Y. Raitses
In this work, we report a confocal laser induced fluorescence (LIF) configuration, which allows for high spatial resolution measurements of plasma properties in plasma setups and s…
Particle-in-cell simulations of anomalous transport in a Penning discharge
Johan Carlsson, Igor Kaganovich, Andrew Powis +3
Electrostatic particle-in-cell simulations of a Penning discharge are performed in order to investigate azimuthally asymmetric, spoke-like structures previously observed in experim…
Generalized lower-hybrid mode with, density gradient, equilibrium ExB drift, collisions and finite electron Larmor radius: Numerical studies with MATLAB solver
Ivan Romadanov, Andrei Smolyakov, Winston Frias +2
MATLAB solver for general dispersion relation has been developed to study local instabilities in partially magnetized plasmas typical for ExB discharges. Several examples of the Si…