PPPS 2019

Session

9.1 Optical, X-ray, FIR and Microwave Diagnostics

O3E

25 Jun 2019, 16:00

DoubleTree at the Entrance to Universal Orlando

Conveners

9.1 Optical, X-ray, FIR and Microwave Diagnostics

• Peter Bruggeman (University of Minnesota)

816. GAS CONCENTRATION DISTRIBUTION NEAR SURFACE IN AN IMPINGEMENT OF ATMOSPHERIC PRESSURE PLASMA JET BY TWO-DIMENSIONAL FILTERED RAYLEIGH SCATTERING

Mr Yuanfu Yue (University of Minnesota)

25/06/2019, 16:00

9.1 Optical, X-ray, FIR and Microwave Diagnostics

Oral

Due to potential applications in plasma medicine and surface modifications, atmospheric pressure plasma jets (APPJs) receives great attentions by scholars in the last decade. Recently, the plasma induced flow instability and ionization propagation along thin mixing layer have been proposed and studied experimentally and numerically [1,2]. In respect to plasma-surface interaction, the mixing...

1137. ELECTRON PROPERTY MEASUREMENT OF A HIGH REPETITIVELY PULSED HELIUM PLASMA JET USING LASER THOMSON SCATTERING

Chunqi Jiang (Old Dominion University)

25/06/2019, 16:15

9.1 Optical, X-ray, FIR and Microwave Diagnostics

Either

The increasing use of atmospheric-pressure nanosecond pulsed plasma jets (APNPJs) in biomedical and environmental applications has motivated fundamental studies of the APNPJs including measurements of plasma properties such as the electron density and temperature. Quantifying these properties helps us to understand the roles of electrons during the initiation and development of the discharge,...

855. ELECTRIC FIELD MEASUREMENTS IN A NANOSECOND PULSED ATMOSPHERIC PRESSURE PLASMA JET IN HELIUM

Ms Mahsa Mirzaee (Department of Mechanical Engineering, University of Minnesota)

25/06/2019, 16:30

9.1 Optical, X-ray, FIR and Microwave Diagnostics

Oral

We report on the spatial and temporal distribution of electric field strength in a nanosecond atmospheric pressure helium plasma jet during the evolution of the discharge when impinging on an ITO glass substrate. We used a non-invasive optical spectroscopy technique based on polarization-dependent stark splitting and shifting of the He I at 492.19 nm (*$2p$ $\space ^1P^0 $ − $4d$ $\space...

959. Incoherent laser Thomson scattering diagnostics for streamer discharge in He gas

Kyohei Eguchi (Graduate school of Science and Technology, Kumamoto University - Japan)

25/06/2019, 16:45

9.1 Optical, X-ray, FIR and Microwave Diagnostics

Either

Streamer discharge plasma, a type of non-thermal plasma, has received global attention as a source of reactive radicals, and is used for many applications such as ozone generation, decomposition of NOx and other gas pollutants, cleaning water, disinfection, deodorization, and medical applications. The tip of streamer discharge, known as the streamer head, in particular contributes to radical...

752. Advanced streamer imaging techniques

Siebe Dijcks (TU/e)

25/06/2019, 17:00

9.1 Optical, X-ray, FIR and Microwave Diagnostics

Either

Streamers are the precursors to sparks, which have undesired effects in many high voltage applications. An example of this is a circuit breaker where high voltages are switched by physically opening the electrical circuit, thereby creating an arc. This arc, which short circuits the separated electrodes is extinguished by flushing with an electronegative gas. After extinguishing, the circuit...