Refereed Publications

Inviscid damping of an elliptical vortex subject to an external strain flow [ DOI ]

Pakorn Wongwaitayakornkul, James R. Danielson, Noah C. Hurst, Daniel H. E. Dubin, and C. M. Surko

PoP, 29, 052107, Cover Article (2022)

We studied the oscillatory motion of a two-dimensional vortex under the presence of an applied strain field. The experiments were performed using columnar electron plasmas in Penning-Malmberg trap. We found that interestingly the damping rate does not change significantly over a wide range of strain rates and we explored other high amplitude perturbation effects.

3D Numerical Simulation of Kink-Driven Rayleigh–Taylor Instability Leading to Fast Magnetic Reconnection [ DOI ]

Pakorn Wongwaitayakornkul, Hui Li, Paul M. Bellan

ApJL, 895, L7 (2020)

We simulated the kink-driven Rayleigh-Taylor, an MHD instability cascade, using 3D MHD code and compared it with the previous theoretical and experimental results.

Determination of a Macro- to Micro-Scale Progression Leading to a Magnetized Plasma Disruption [ DOI ]

Byonghoon Seo, Pakorn Wongwaitayakornkul, Magnus A. Haw, Ryan S. Marshall, Hui Li, and Paul M. Bellan

PoP, 27, 022109 (2020)

We reported observations and a model of a sausage-to-kink instability sequence that breaks off the plasma and causes a fast magnetic reconnection.

Magnetic Rayleigh-Taylor Instability in an Experiment Simulating a Solar Loop [ DOI ]

Yang Zhang, Pakorn Wongwaitayakornkul, Paul M. Bellan

ApJL, 889, L32 (2020)

We presented an observation of a hoop force driven magnetic rayleigh-Taylor instability in a laboratory experiment simulating a solar coronal loop

Magnetically Induced Current Piston for Generating Extreme-ultraviolet Fronts in the Solar Corona [ DOI ]

Pakorn Wongwaitayakornkul, Magnus A. Haw, Hui Li, Paul M. Bellan

ApJ, 874, 137 (2019)

We proposed a hybrid model where EUV waves are compressional fronts driven by a reverse electric current layer induced by the time-dependent CME core current.

Reverse Current Model for Coronal Mass Ejection Cavity Formation [ DOI ]

Magnus A. Haw, Pakorn Wongwaitayakornkul, Hui Li, and Paul M. Bellan

ApJL, 862, L15 (2018)

We reported a new model for explaining the three-part structure of coronal mass ejections (CMEs). We proposed that the cavity was formed due to a diamagnetic effect of the plasma in ideal MHD regime. The dynamics of the obeservational, experimental, and simulated flux rope is tested with a simple 1D equation of motion.

Apex Dips of Experimental Flux Ropes: Helix or Cusp? [ DOI ]

Pakorn Wongwaitayakornkul, Magnus A. Haw, Hui Li, Paul M. Bellan

ApJ, 848, 2 (2017)

We presented a new theory for the presence of apex dips in certain experimental flux ropes.

Others

Dynamics of an Arched Magnetically-Twisted Current-Carrying Plasma [ DOI ]

Pakorn Wongwaitayakornkul

PhD dissertation (2020)

Experimental and numerical studies of a dense magnetically-twisted plasma and their applications to solar plasmas are the subject of this dissertation.

A Non-Invasive Diagnostic Tool for Cardiac Pressure Gradients [ PDF ]

Pakorn Wongwaitayakornkul, Muhammad S. Shamim, Craig Rusin, Elijah Bolin, and Matthias Heinkenschloss

CAAM Senior Project (2014)

We developed a mathematical model to accurately transform echocardiogram data into pressure gradient information accessible to clinicians.

A 3D High-Speed Probe for Measuring the Magnetic Components of a Whistler Wave [ PDF ]

Pakorn Wongwaitayakornkul, Xiang Zhai, and Paul M. Bellan

Summer Undergraduate Research Fellowships (2013)

I made a 3D fast (10-30 MHz) magnetic probe for measuring whistler wave from magnetic reconnection

A Tellurium Frequency Reference For Re-pumping During Laser-cooling of Strontium [ PDF ]

Pakorn Wongwaitayakornkul and Thomas Killian

Physics Senior Thesis (2013)

I worked on the development of a new repumping system for laser-cooled strontium atoms using a laser operating at 481 nm. The project includes characterization of the new laser, construction of the temperature control system, and the spectroscopy of the tellurium cell.

Imaging Plasmas with Coded Aperture Methods Instead of Conventional Optics [ PDF ]

Pakorn Wongwaitayakornkul and Paul M. Bellan

Summer Undergraduate Research Fellowships (2012)

I worked on the prototype of coded aperture imaging camera to be used for imaging X-ray coming from magnetic reconnection.