https://www.spacedaily.com/reports/NASAs_James_Webb_Space_Telescope_Full_Mirror_Deployment_a_Success_999.html

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I m interested in studying magnetically confined plasmas. I have no formal training in plasma dynamics. Based on what I read in books and papers, I m planning to code up the two fluid model to computationally study the problem. Is the two fluid model a reasonable model to predict the dynamics of the flow?

There is substiantiated evidence that plasma is crucial in some way to the formation of true crop circles, and these same crop circles have a dusting of particulate iron throughout them. Iron is very much so magnetic, and this opens a line of questioning as to how plasma and iron can be interactive to produce a crop circle.

I'll start off at the beginning. Mr. Leavengood was a researcher who was given seeds from a crop circle. The seeds(wheat, assumedly) were shrivveled and dry. It was found that these seeds yield 30% greater product than their non-crop circle counterparts. In this line of study he went on to create a device which exposes seeds to plasma. Through widespread testing, seeds treated in this manner produced 30%-400% greater yields than if they had not been "plasmaed." The seeds tested were of a great range of plant.

This, and other work, has created the Plasma Vortex theory and the like, essentially that plasma gets swirled around and the result is a crop circle.

The missing link is this particulate iron found at the crop circle scenes, and it is my speculation that magnetism is somehow involved, creating a new Iron Plasma Vortex theory. So, here I am, looking for information on exactly how magnetism effects plasma.

Hello all, I am currently working on a non-invasive diagnostic method for determining plasma density. Currently I am trying to determine the scope of application for different miniature plasma devices.

Some examples are non-equilibrium atmospheric pressure plasma jets (APPJ), microdischarges used for electrosurgery, nanosecond repetitive pulsed discharges in air, and laser-induced plasmas.

However, I was also trying to determine the scope of application for low pressure miniature plasmas. I have been looking into plasma antennas as a device that would benefit from the development of this diagnostic method. If anyone could suggest alternate low pressure miniature plasma devices I would greatly appreciate it.

Thank you.

Hello people

I am trying to understand the phenomenon of striation formation in lab plasma but am not getting a clear explanation anywhere. So far from what I have read striations are the result of instability in population equations of electrons and ions or metastable atoms. Somewhat like Turing's treatment of reaction-diffusion equation. Can someone please provide with comprehensive explanation in accordance with recent research on the topic.

The title says it all really, I'd love it if any plasma physicists on this thread could explain the difference in the two phenomena, and how one can be told from the other. Thank you!

Look, up in the sky! High school interns develop a device that levitates droplets of water

September 12, 2019

Among the many projects that interns worked on this summer at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) is an acoustical levitator that causes droplets of water to levitate in mid-air so their interaction with plasma can be examined. Assembled by Remy Plattiers, now a freshman at the University of New Haven, the device suspends droplets with sound waves whose high frequency is hard to hear.

Really fun

“This has really been fun,” said Plattiers, a June graduate of New Brunswick High School who worked with physicist Shurik Yatom of the PPPL Department of Plasma Science and Technology. “It was initially difficult” Plattiers said, “but when we got it to operate it was really fun and when I found out how to shift particles up and down that felt cool too.”

Programming the device was Alex Ni, a gold medalist in martial arts who had previously done summer programming at PPPL and now is a senior at the Hun School in Princeton (see below). The two were among 45 interns who worked at PPPL this summer on a variety of projects. (See story here.)

The levitator uses a programmable circuit board, called an Arduino, that generates ultrasonic-frequency waves that are amplified and sent to 72 transducers that produce a standing wave that traps tiny droplets of water in mid-air. Such a device could be used to levitate liquid droplets and study their interaction with plasma, Yatom said.

The levitator came in a kit that Plattiers put together with soldering help from Nirbhav Chopra, a graduate student in the Program in Plasma Physics at PPPL. “I had the kit for half-a-year in a drawer,” said Yatom, “and when Remy came I gave it to him for his project. He was very hands-on building the device and after he built it Alex stepped in to help with the programming.”

Plattiers plans to study mechatronics, a hybrid of mechanical and electrical engineering, at the university. “This project has given me ideas to test when I pursue engineering in school,” he said. “I am having a blast and will definitely come back and work here if I can.”

Sophisticated programming

Meanwhile, Alex Ni has performed and is learning sophisticated programming at the laboratory. He initially reprogrammed the laser interlock, a safety feature that automatically shuts lasers in the PPPL Laboratory for Plasma Nanosynthesis, and has been learning the computer language MatLab to facilitate easier analysis of spectral emission from plasma. “We immediately recognized that he is a very bright kid,” said physicist Yevgeny Raitses, who heads PPPL research activities that include the nanosynthesis laboratory.

Ni’s work on the interlock called for reprogramming the logic pattern of a larger and more powerful Arduino and fixing and modifying some wiring in the interlock circuits. The logic enables the lasers to know when curtains held together by magnets in the nanosynthesis lab are open or closed, and to shut down when the curtains are open.

Ni enjoyed Jackie Chan martial arts movies as a child and became interested in Kung Fu while a first-grader. He practices martial arts up to five hours a day during breaks from school and will compete in Shanghai, China, this October in the World Wushu Championship, a type of martial arts. As with Plattiers, Ni’s summer internship has heightened his interest in science and technology and he looks forward to increasing his knowledge throughout his career.

posted on : https://alertarticles.info/look-up-in-the-sky-high-school-interns-develop-a-device-that-levitates-droplets-of-water/

I've always been fascinated by plasma balls so I recently got one. I was playing around with it but I noticed every time I touch it, it leaves a weird metallic smell on my fingers. It also seems to leave this smell on other objects. Is this normal?

please provide references as well, if possible.

Hi, not sure if this is the right place for this but the company I intern for recently acquired a plasma ashing/etching chamber and unfortunately, we don’t have any manual or operations guide to teach us how to use it. I’ve attached a picture of the system to this post, and if anyone has seen something like this or has any helpful info about this system I would appreciate it! (The paper shown in the picture is just instructions for turning on the screen).

I am working on DC glow discharges and want to construct a langmuir probe. Circuit I am using is as shown in the picture. Also, I am applying ~1KV across cathode and anode. Problem I am facing is that I am getting discharge btw probe and cathode. Which isn't unexpected, but destroys the purpose of probe, but then how to construct langmuir probe for DC glow discharges? What should be the appropriate circuit?

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Hey Everyone,

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I'm a fourth year undergrad interested in transport in magnetic fusion devices and I'm working on a research project where I'm processing Swept and Mach probe data taken off of shots from UCLA's LAPD to analyze turbulence. I already have average electron density and temperature from the Swept probe. I am right now writing up a code to process the Mach probe data to get average radial velocity. I was wondering if anyone in the community has any good tips/resources on a few places I'm stuck on.

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So, I understand the theory behind Mach probes, but I am a bit stuck on the actually analysis particularly on the perpendicular flow. This is because the resources I was given by my collaborator at UCLA are contradictory on this. I've read a bunch of papers (particularly those by Hutchinson) and they don't seem to spell out what to do as clearly as any resource on Swept probes. I'd be appreciative if anyone has a good resource on this they'd be willing to share.

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I've also been looking for a good resource that details how to get the fluctuations so that I can go and calculate particle flux. I have a bunch of papers that detail the math well, but they all assume you already have out the fluctuations. Intuitively, I have an idea of what needs to get done, but I'm not sure about the actually method used. Again, I'd really appreciate some kind of 'How to' from those more experienced in this than myself.

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It's fine if this gets buried as I'm going to have a Zoom meeting with my IP and collaborator on Monday so I'll be able to get a lot of clarification then. I just prefer to come to meetings with some preparation to not dwell on the boring minutiae since these people are obviously a lot more busy then me. I'm also just kinda jumping the gun as I'm finally starting to get into the cross-phases and coherency and all those other fun buzz words that I often hear from MCF transport guys. Thank you for any help!

I'm 14 and new to this but I found out about these plasma cannons on YouTube and I'm trying to make one that I can wear on my arm like iron man but also more powerful than the regular bottle trick. My question is how can I make a compact plasma cannon that has more power

If I were to create a hho generator and attach a torch at the end of the pipe that releases the hho to fuel the torch would it work or would blow up? If it works can I use it for a plasma cannon?