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PPPS 2019

22–28 Jun 2019
DoubleTree at the Entrance to Universal Orlando
America/New_York timezone

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Session

1.4 Partially Ionized Plasmas

O7A
25 Jun 2019, 16:00
DoubleTree at the Entrance to Universal Orlando

DoubleTree at the Entrance to Universal Orlando

5780 Major Blvd. Orlando, Florida, 32819, USA

Conveners

1.4 Partially Ionized Plasmas

  • Tobin Munsat (University of Colorado)

Presentation materials

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  1. 1275. Measurement of Photoionization Rates and Quenching Pressures
    Justin K. Smith
    25/06/2019, 16:00
    1.4 Partially Ionized Plasmas
    Invited

    Many computational codes that involve transient plasmas, incorporate photoionization rates to describe the evolution of such phenomena as streamer development and propagation. At near atmospheric pressures, photoionization rates decrease significantly due to collisional quenching. The collisional quenching is the process where an excited molecule returns to the ground state non-radiatively at...

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  2. 691. Experiment on the propagation of relativistic pulsed electron beam in plasma
    Thomas Lahens (CEA-CESTA, Le Barp, F-33116 France)
    25/06/2019, 16:30
    1.4 Partially Ionized Plasmas
    Oral

    We present an experiment designed to investigate the propagation of a high-current relativistic pulsed electron beam (4MeV, 2kA, 60ns) in plasmas. This experiment takes place on an existing electron source at CEA-CESTA, and uses a plasma cell specially designed to this purpose.
    It consists of a ~1 meter long beam line section holding a glass tube in the path of the electron beam. We generate a...

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  3. 830. PLASMA PROPAGATION SPEED MODEL FOR INVESTIGATION OF ELECTRON TEMPERATURE AND PLASMA DENSITY OF AR PLASMA IN ATMOSPHERIC PRESSURE MICRO-DBD
    Mr PRADOONG SUANPOOT (Maejo University Phrae Campus)
    25/06/2019, 16:45
    1.4 Partially Ionized Plasmas
    Oral

    A model based on plasma propagation velocity has been recently developed to estimate the electron temperature ($Te$) of atmospheric pressure u-DBD plasma. In this work, we have extended this model to calculate Te for plasma generated with Ar gas. Plasma has been generated by input discharge voltage of 2.7 kV at a driving frequency of ≈ 45 kHz. A high-speed single-frame intensified charged...

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  4. 1251. Overview and challenges of partially magnetized plasma modeling
    Kentaro Hara (Texas A&M University)
    25/06/2019, 17:00
    1.4 Partially Ionized Plasmas
    Oral

    The current status and challenges of the discharge plasma modeling capabilities in crossed field devices are reviewed. The plasma flows in such sources, e.g., Hall effect thrusters and magnetron discharge, are partially magnetized, i.e., electrons are magnetized while ions are not magnetized. The partially magnetized plasmas present unique and complex phenomena in that collisions with neutral...

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