PPPS 2019

Session

2.7 Microwave Plasma Interaction III

O6B

26 Jun 2019, 15:30

DoubleTree at the Entrance to Universal Orlando

Conveners

2.7 Microwave Plasma Interaction III

• John Leopold (Technion)

584. The interaction of a high-power sub-nanosecond microwave pulse with preliminarily formed plasma in a waveguide

Mr Yang Cao (Technion-Israel Institute of Technology)

26/06/2019, 15:30

2.7 Microwave Plasma Interaction

Oral

We present the results of analytical modeling and numerical particle-in-cell simulations showing that the propagation of a high-power sub-nanosecond microwave pulse through a plasma-filled cylindrical waveguide[1] should lead to the formation of a wakefield with significant periodic plasma density modulation. The latter can be controlled by varying the waveguide radius, the plasma density, and...

1302. The Experimental Study of Time Resolved Inductively Coupled Plasma for Fast Control of High Power Millimeter-wave

Mr Mun Seok Choe (Ulsan National Institute of Science and Technology (UNIST))

26/06/2019, 16:00

2.7 Microwave Plasma Interaction

Oral

The suppression of neo-classical tearing modes (NTMs) which is one of plasma instability is a critical issue to prevent the disruption of H-mode plasma in fusion plasma tokamak. To operate steady-state drive, we should understand not only physical phenomena of tearing modes but also optimized conditions of electron cyclotron current drive (ECCD) to suppress time resolved NTMs in range of a few...

683. Theoretical investigation of a novel microwave driven ICP plasma jet

Mr Michael Klute (Ruhr University)

26/06/2019, 16:15

2.7 Microwave Plasma Interaction

Oral

Microwave and radio frequency driven plasmas-jets play an important role in many technical applications. They are usually operated in a capacitive mode known as E-mode. This mode, however, couples considerable power to ions which limits the plasma density and the efficiency and gives rise to negative side effects such as erosion. The inductive coupling, known as H-mode, eliminates these...

608. Inductively Coupled Plasma at Atmospheric Pressure, a Challenge for Miniature Devices

Horia-Eugen Porteanu (Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenzte)

26/06/2019, 16:30

2.7 Microwave Plasma Interaction

Oral

Inductively coupled plasma (ICP) sources are preferred to the capacitive (CCP) sources because of their higher electron density and plasma purity. The use of microwaves for the plasma excitation allows not only to obtain a dense plasma with a low gas temperature but also to generate such a plasma at higher pressures. We present a miniaturized device capable of working up to atmospheric...

1013. VARIABLE-FREQUENCY CAPACITIVELY COUPLED PLASMA AS A TUNABLE RF ELEMENT

Dr Andrei Khomenko (Purdue University)

26/06/2019, 16:45

2.7 Microwave Plasma Interaction

Oral

Plasmas are attractive for next-generation reconfigurable RF systems because plasmas can be turned on/off, have their properties varied in a wide range, and handle much higher power than semiconductors can. Tunable capacitors and inductors are key elements of any reconfigurable system. In a capacitively coupled discharge, the impedance of both the sheaths and the plasma can be controlled by...

819. Toward a Wideband and High-Isolation Power Limiter

Dr Abbas Semnani (Purdue University)

26/06/2019, 17:15

2.7 Microwave Plasma Interaction

Oral

Power limiters are critical elements in radars and other systems that may be subject to high input power. High-performing limiters are important since they are at the front end of the signal chain; put simply the ultimate goal of a limiter is to provide sufficient isolation across a wide bandwidth with the smallest possible loss, high linearity, short response time, and high power...