Plasma Definition and 681 Threads

I happened to stumble across these books which seem to give decent backgrounds on the subject. Nuclear Reactions for Astrophysics: Principles, Calculation and Applications of Low-Energy Reactions by Ian J. Thompson and Filomena M. Nunes...

Hello, Working on a little project, just some electrostatic plasma confinement, and the high energy plasma is being expelled out a nozzle, and a colleague of mine proposed that we use an electron beam through the center of the nozzle, the nozzle already having a bit running down the center that...

Hi, i'm studying a MEng Electrical and Mechanical engineering course in the UK. I've just started second year and have been approved by my advisor to take on an extra module next semester in plasma and astro physics. This module is intended for 4th year physics students and won't count...

Alright, If you had a vacuum chamber and put in a gamma ray producing material (say Radium) would it produce plasma? I have seen someone do this with microwaves, so why wouldn't it work way gamma? Heres the site that uses microwaves to produce plasma...

What are your thoughts? Apologies if this is in the wrong place... http://www.popsci.com/science/article/2010-02/rhic-collider-creates-72-trillion-degrees-fahrenheit-quark-gluon-plasma"

I am nt able to understand why we are not able to measure ion temperature in plasma using single probe method ? Why tungsten or molybednum probes are used ? The book says due to their refractory properties but i am nt getting it . TO mod , i didnt find a plasma related section so...

Is it possible to make a plasma shield by using Radio Frequency from a microwave and making plasma. I know that part is possible, here's the tricky part. Having magnets with the right ratio of pull and push so the plasma can "shield" an object. So, is it possible?

I need to have information on plasma physics journals , articles , can anyone give me names of some useful sites which send mails on what happening in this field.

Why use high frequency power supply for generating plasma?? Hi everyone, I noticed that for the plasma ball common in science museum, power with high frequency should be used for generating so called plasma inside to give out colorful glow. But one thing I can't understand is why power supply...

I need help, and not just from Wikipedia. I need to know what is know about the State Bose-Einstein State...the state more solid than..solid...per se.

I wanted to ask about plasma propulsion engine. Plasma can be made by using radio waves. How this part of device looks like?(I know something, like an antenna, is used) I searched the net, but I didn't find anything. Thanks in advance. P.S Please explain as simple as you can

I have a undergrad college class where we have to do some sort of experiment and we were going to try this one http://mesoscopic.mines.edu/mediawiki/images/9/93/Microwave_flourescentlamp.pdf Is a vacuum chamber required? The article states it's inexpensive and we're trying to figure out how...

Homework Statement From Tipler's Physics for Scientists and Engineers(the latest edition) 71.Human blood contains plasma, platelets, and blood cells. To separate the plasma from other components, centrifugation is used. Effective centrifugation requires subjecting blood to an acceleration...

Hi, Please I would like to have some hints on this problem (from plasma processing course): a) Starting from Eq. (2.4.7) of the textbook, derive an equation for the Maxwell-Boltzmann distribution in terms of electron energy. b) Calculate the rate of ionization of molecular chlorine as a...

Is the temperature of a hypothetical antimatter bomb explosion sufficiently high to heat the surrounding matter into quark-gluon plasma? I guess not, but just want to ask you guys for sure.

1. Explain why it is important for inelastic equation to occur in a plasma in order for process such as ionization and excitation to happen. 2. 1/2(m1u1^2) = 1/2(m1)(v1^2 + u1^2 sin^2(theta)) + 1/2(m2v2^2) + (delta)U3. According to the inelastic equation above, in order for ionization and...

Now then, Is it posibble to make a plasma thrower? It would work like this. A vacuum is set in a chamber and plasma is produced inside while contained by a magnetic field. Then at the push of a button one end of the chamber loses its field and powerful magnets are put close up to the other...

Recently, in my research, a question has arisen about the modification of the scattering frequency of a photon by a population of electrons, if those electrons are flowing at a considerable fraction of the speed of light. Intuitively, to me, it seems that if a photon is directed into a...

Okay, now I realize that this is from sci-fi, but I'm just wondering if it's possible to do this. In the movie, The Sorcerer's Apprentice, the guy uses Tesla coils to "make music." He said that when they fired, the did so at such a high frequency that it made sound. Is this possible?

I recently acquired my BSc in physics and am planning to continue my studies on the MSc (and hopefully PhD) level. I have reasonable expectations to get into a very good program dealing on the topics of mathematical and theoretical physics. The main topics covered by the courses in that...

Lately, I've heard that the scientists at Brookhaven National Lab were able to create a collision between gold ions that generated 4 trillion degrees Celsius. They said that this amount of energy in the collision was more than enough, according to their calculations, to melt the nucleons into a...

can anyone explain me what is the meaning of self consistency of plasma ?

First off, I would like to apologize for my ignorance. I am a college freshman, computer science, so I'm not as educated as I would like in the areas of physics that interest me most. On to my question, though. I'm wondering if someone could provide an equation describing the energy released...

Hi all, exams in a few weeks and having a bit of trouble understanding the characteristics of plasmas/sheaths. E.g. the following question from a sample paper "Describe the characteristics of the sheath that forms at the boundaries of confined plasma. In your answer state what is meant by the...

Had a bad day at work and my design for a spark generator failed, so I'm asking for help. My requirements: To create a spark in a hard vacuum environment (10^-6 mbarr) To be ultra miniature (as a guideline about 1cm^3 is the space available) Available power lines is 4.4v at 0.22A or 700V...

Any help on the following theoretical plasma problem would be greatly appreciated! The diffusion eqn for a one-dimensional plasma, varying in the x direction only is D d2n/dx2 =-Q Letting Q=nvi we can show the diffusion eqn has a solution of the form n=Asin[sqrt(vi/D)x] +...

Can anyone help me find this book: Plasma Spectroscopy, Author: (H.Griem) It is the most famous book and it is the very basic level of plasma spectroscopy, if you find it that will be great for everyone in this field. thank you

Im in High School in New Brunswick, Canada and I am doing an APA research paper on plasma( or at least trying to). And I've been looking around the internet and found some interesting stuff. But basically the only thing I've gotten out of my research( which has been mainly online books/papers)...

Hey Guys, So I am trying to model the development of a collisional plasma in time. Now the problem I face is at the sheath boundary the changes in the charge densities is very large. I use the charge densities to evaluate the electric potential at different points in the plasma. I have...

Homework Statement I know about Plasma Balls (generally) from this site: http://www.4physics.com/phy_demo/plasma1.htm But I need to somehow explain what is occurring in this demo where a fluorescent bulb is lit up when in the vicinity of the plasma ball: Homework Equations None that...

I've been agonizing over what to study in graduate school. I'm most interested in Astrophysics (which is what my undergraduate degree will be in), but the job prospects have scared me off of Astrophysics and even general Physics, and I'm not interested in academia anyhow. In an attempt to...

I'm interested in building a plasma loudspeaker using a 1kW amplitude modulated RF amplifier. The amplifier will modulate the output of a 27Mhz RLC circuit which is connected in series between two Tungsten electrodes (opposite polarity). I believe if a potential of 30kV/cm is placed between...

water and plasma! Hello, Recently i was into chem books and read about this plasma matter. So now i know plasma matter is in the sun and all stars and also in the humble candle flame. What i want to know is whether only a few kinds of elements can form plasma or is it that all...

I saw THIS video and THIS OTHER ONE I was really quite surprised that such a thing was actually made to work. I'm curious how one could create an arc such as that, and then modulate it to match an audio signal. From my interpretation the extreme voltage causes an arc between the contacts...

Mainly I don't get how plasma loses energy by conduction, which is what I have read. Is it just from the collisions between plasma particles and the wall? Thanks!

The Brookhaven National Laboratory's website has a news item on 'Hot Quark Soup' which seems to mean quark-gluon plasma. (http://www.bnl.gov/bnlweb/pubaf/pr/PR_display.asp?prID=1077) The article refers to "this remarkable form of matter, which last existed some 13 billion years ago". At...

Hello everyone, I have a degree in Computer Science/Engineering and have more recently been studying Physics. I've been really interested in the possibility of creating plasma in such an ordered state that virtual positrons begin to affect electrons non-chaotically and accelerate the electrons...

Homework Statement Human blood contains plasma, platelets, and blood cells. To separate the plasma from other components, centrifugation is used. Effective centrifugation requires subjecting blood to an acceleration of 2000g or more. In this situation, assume that blood is contained in test...

Hi guys. I need some ideas on making something similar to one of these: http://www.pumpschool.com/images/Cutaway-Classic+.jpg Only the one I'm trying to make will pump 200+PSI, and be driven from red hot exhaust. Swept volume is going to be around 4 liters per revolution. I...

I've been looking on the internet and can't find the answer to this question. I'd like to know if it is generating current purely via the traditional inductive method, or if they plan to use any non-inductive method. I suspect the former but I need to know for certain. And could anyone...

I'm doing some classic research into the possibility of replacing copper core power transmission lines in the United States power grid with tubes designed to contain low temperature plasma. The idea is that one would be able to transmit power more efficiently and effectively in plasma opposed...

Hello all physicists, Actually, I am trying to solve Chen’s book problems which is titled Intro to Plasma Physics Controlled Fusion, 2ed. I encountered many steps that I would like to discuss with you which still not so clear in my mind. Please take a look into that problems either in your...

What are some U.S. & European Universities that have a good graduate program for studying Plasma Physics? I am specifically interested in application to fusion. I know Princeton has the plasma laboratory, but that might be too competitive for me.

What is the speed of free electrons in vacuum, plasma and superconductors? Can we 'slow down' free electrons? Just how slow can we make electrons go?

In the energy producing region of the sun there is a large radial flux of high energy photons. Does this outward flux polarize the plasma and give rise to a electric field in this inner region? What is an order of magnitude estimate of this field? As the sun rotates this field gives rise to a...

Is it possible to use fisssion to create plasmas, then use the plasma to generate electricity instead of suing steam to for elctricity? Just a thought.

Recently I have heard that to contain a plasma, you need both an electric and magnetic field. I'd like to look into this more, does anyone know where I can find information on it?

Would anyone know or happen to be able direct me to some information: How would I create a glowing plasmoid in the air using a 1 watt 808 nm diode laser? Essentially I am converting the nitrogen in the air into a plasma using a 1watt 808nm diode laser focused to a point. Now is there...

Water and glass are considered denser than vacuum for their dielectric coefficient is greater than the dielectric constant of vacuum. The plasma's dielectric constant is \epsilon0(1-(\omegap/\omega)2) Does this mean that plasma can be considered less dense than vacuum?... thanks in advance.

Consider, if it were the case, that the plasma torus left in Io's path as it orbits Jupiter followed the same orbital path as the moon and was not deformed by Jupiter's magnetosphere...thus a space station orbiting Jupiter could effectively orbit in Io's plasma torus. Yes, this is going...