249 – Plasma Physics
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Guests: Walter Gekelman, Troy Carter Host: Markus Voelter Shownoter: Andy Joiner
During my trip to the US I also visited the Basic Plasma Science Facility at the UCLA in Los Angeles. I talked with the two professors who run the facility, Walter Gekelman and Troy Carter. We discuss the basics of plasma, the research questions of plasma physics and some of the experimental challenges. I also get (and report on) a tour through the facility, which was very impressive, mainly because the whole system was built by the team around Walter and Troy!
Theory with Walter and Troy
00:01:48Walter Gekelman | UCLA | Plasma | Troy Carter | Fusion | Tokamak | D3D Tokamak | Astrophysical plasma | Space plasma | Ionization | "A soup of electrons, a soup of charged positive ions" | "There may or may not be neutral particles" | "The hotter the plasma is, the fewer neutral particles there will be" | Collective behaviors | Debye Shielding | Non-linear behavior compared with gas | Memory | Collective response | Waves communicate disturbance | Plasma in manufacturing | Plasma processing | Plasma etching | Plasma implantation | Wafer | Lasers can produce plasma when they hit a solid | Plasma can be as dense as water | Statistical physics | Maxwell–Boltzmann statistics | Numerical analysis | Particle-in-cell | Non-neutral plasmas | Pure ion/pure electron plasma | TFTR 510,000,000°C | Nonthermal plasma | Plasma oscillation | Plasma magnetization | Plasma potential | Coulomb barrier | Solar wind
More theory with Walter
00:38:01Lightning | Sprite | Magnetic ropes | Plasma is a better electrical conductor than copper | Resistance | Collisionless | Superconductor | Ionosphere | Heliosphere | Plasma cloud | Debye length | Artificial plasmas | Plasma display | Phosphor | Ground state | Ion laser | Sterilization | Plasma scalpel | Plasma cutter
Tour of the Facility
00:57:55Large Plasma Device (LaPD) | CNC machine | Turbomolecular pump | Airlock | Scripted | Cathode | Busbar | Substation | Heat exchanger | Supercapacitor | Quasi-separatrix layers | Ohm's law | LAPTAG | Residual gas analyzer | Waveguide | Faraday cage | ITER | Electron beam | Ion beam | Alfvén wave
Troy’s Research
01:45:58MHD turbulence | Accretion disk | Orbital decay | Kelvin–Helmholtz instability | Keplerian rotation | Eddie | Viscosity | Omega tau SOFIA tour | Energy cascade | Reproducibility | Drift waves | Rayleigh–Taylor instability | H-mode | H-mode profile | Stellarator | Edge-localized mode | NIF
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Marcus,
Very interesting podcast. Do you have photos of the 73F and 4F capacitors? Or are they in the photos above?
Craig
Wonderful Podcast – at least 10h too short ;-) !!
I can’t stop listening to this stuff!
The few words regarding the edge localized modes (ELMs) was just the beginning of an extremely important part of the Fusion physics. I wish there would be more and there would be more people trying to solve these issues …
Have you thought about adding literature links at the end of the show notes?
eg. “Plasmaphysik und Fusionsforschung (German Edition): 2. Auflage (Michael Kaufmann)” ISBN: 3658032383
I have to say I did not like this one. I did not learn much. Questions were too open ended, the researchers were plainly not good at explaining things they knew, and the interviewer was often laughing unnecessarily and saying ya ya a lot without waiting for the complete answer. Also obviously the experimental stuff and demos do not translate well into just audio. I hope this is taken as positive criticism because this podcast is still great overall.
Accepted as constructive criticism :-)
Really like this one. I did listen to it a few times and enjoyed it more each time. Markus I do like the way you hang in there and I’m impressed that you don’t get too flustered and stay engaged and enquiring (apart from that superconductivity episode maybe ;). I do also like how you keep a sense of humour and aren’t afraid to ask questions like ‘where did you learn all this stuff’ :)
Thanks Markus, great work.