PPPS 2019

Session

1.1 Basic Phenomena II

O5A

26 Jun 2019, 10:00

DoubleTree at the Entrance to Universal Orlando

Conveners

1.1 Basic Phenomena II

• Patrick Wong (Michigan State University)

1147. Direct observation of the current evolution in a small-scale self-compressing plasma column

Christine Stollberg (Weizmann Institute of Science)

26/06/2019, 10:00

1.1 Basic Phenomena;

Invited

We report on the direct measurement of the evolution of the azimuthal magnetic field ($B_{\theta}$) in a small-scale, self-compressing plasma column using spectroscopic methods. This measurement allows for calculating the radial distribution of the axial current density which is crucial for understanding the dynamics of the plasma compression, and for improving predictions of detailed MHD...

1273. Identification of the Corona Point in Point-to-Plane Geometries in Atmospheric Air

Leonardo Rossetti (University of New Mexico)

26/06/2019, 10:30

1.1 Basic Phenomena;

Oral

In highly non-uniform electric fields, corona appears when a geometry-dependent threshold voltage is reached. A further increase in voltage results in circuit-limited breakdown. As the electric field becomes more uniform, the difference between the corona-onset voltage and the breakdown voltage becomes smaller until finally breakdown commences directly. The gap distance and voltage where the...

613. On three different ways to quantify the degree of ionization in sputtering magnetrons

Prof. Jon Tomas Gudmundsson (University of Iceland)

26/06/2019, 10:45

1.1 Basic Phenomena;

Oral

High power impulse magnetron sputtering (HiPIMS) is an ionized physical vapor deposition (IPVD) technique that has received significant interest lately [1]. However, proper definitions of the various concepts of ionization are lacking while quantification and control of the fraction of ionization of the sputtered species are crucial in magnetron sputtering, and in particular in HiPIMS...

641. Nonlinear Electron Power Absorption in Capacitively Coupled Radio Frequency Discharges

Sebastian Wilczek (Ruhr University Bochum)

26/06/2019, 11:00

1.1 Basic Phenomena;

Oral

In low pressure capacitively coupled radio frequency (CCRF) discharges, the expansion of the plasma sheaths generate highly energetic electron beams traversing the discharge gap and supporting the plasma via ionization. The penetration of these electrons into the plasma bulk can lead to significant plasma oscillations and propagation of electrostatic waves. Consequently, the electron power...

737. Observation of positive and negative nanosecond pulsed streamers in a coaxial electrode using a quadruple emICCD camera system

Hitoshi Yamaguchi

26/06/2019, 11:15

1.1 Basic Phenomena;

Oral

The environmental improvements by non-thermal plasma have been actively studied all over the world. Generally, a pulsed discharge having a time duration of 100s ns consists of two discharge phases including the primary streamer and secondary streamer discharges. It is also well known that the streamer heads always have the largest electric field during entire discharge process and meanwhile,...

664. Atomistic Study of Polarization response in Functionalized Barium Titanate Nanoparticles

Renee Van Ginhoven (AFRL)

26/06/2019, 11:30

1.1 Basic Phenomena;

Either

To further the goal of optimized material design for pulsed power components, we aim to achieve a fundamental understanding of the model nonlinear dielectric material BaTiO3, through concurrent experimental and theoretical study. This effort is intended to lead to improved synthesis and design control, and a validated model to enable material predictions. The ultimate goal is to improve energy...