Plasma Definition and 618 Threads

This really isn't a HW problem, but this seemed like the best place to post my question. Imagine a modern city's water cycle. Clean water is obtained from a river or from groundwater, and this water is used for drinking, bathing and industrial uses. Afterwards the water is fouled...

Hello everyone, I would like to get ~200 MeV quasi-monoenergetic electron beam by doing 2D Particle-In-Cell simulation in bubble regime. The moving window dimension is 50x50 μm for x and y, the simulation mesh size is set 0.04x0.4 μm, each mesh includes 10 particles, laser wavelength is 800 nm...

I liked my previous courses in statistical mechanics and fluid dynamics, however I don't really like E&M, especially at the Jackson level. I am thinking about doing research in plasma physics. Would I hate plasma physics if I didn't like electrodynamics? Or is that not an issue and does plasma...

What is the general difference between the two (for someone who is still new to nuclear physics) and which one produces the highest net energy? Which of these has the highest potential for the future?

Hello everyone, I was recently creating two different types of plasma for a Science Fair, one created from ionised Helium, (although it's the party balloon stuff, and I hear there's some Oxygen in them) and the other was created from air. I was testing how the plasmas reacted to magnetic fields...

After a science fair experiment we have measured the similarities and differences of plasma created by air and helium. Our methodology is as follows. Methodology A(air): 1. Light a match and place it on a small raised surface inside a microwave 2. Cover the match with a glass bowl/beaker...

My question is can plasma be used to conduct electricity as efficiently as a solid conductor? I know stability is an issue , but can it be overcome.

I did my undergrad in mathematics, and I really enjoyed studying that subject. After graduating, I've been continuing my study in Real Analysis with one of my undergrad professors, and I really feel like I'm blooming into a decent analysis student. This week I'm going to start learning...

Ok small bit of a problem which I have been experiencing. I am using an industrial size plasma oven by advance plasma sytems. This plasma oven operates at an RF of 1600 watts for approx 8 minutes for the duration of the plasma cycle. It pulls down to a vacuum of 450mTorr and use oygen as a...

Hi everyone, I am about to enter a local Science Fair and my project revolves around creating plasma in a microwave. This is a great experiment, all you do is stick a lighted match in a cork, (or something to hold the match in place) put it in the microwave with a glass beaker over the match...

This may seem like a strange question, I'm trying to differentiate between the spectra from a plasma and the spectra from a black body, is there a difference? I'm thinking the spectrum from a plasma would be that of bremstrahhlung as it is ions flying everywhere, so it would not be possible...

Can a plasma be compressed to greater densities than other forms of matter?

What is the energy partition in the laser-induced plasma? Based on the atomic emission spectra from the plasma, we can infer the electron temperature and electron density from Boltzmann-plot and Stark broadening, I wonder how can I calculate the total energy in this plasma?

Hey has anyone had experience with a good book on Laser-Plasma interaction at a graduate level? I've seen a few on amazon and the like but they rarely have reviews so I have no idea how good they are. Thanks you!

I'm not sure where to post this so forgive me if the is the wrong place. Can any element be a plasma or only certain ones? Could you make iron plasma?

Ok I'm posting this here as well since It falls under both engineering and high energy physics, since I haven't gotten an answer on the high energy physics thread. So I've been researching Dense Plasma Focus devices for a while now and a question just occurred to me. Since the fill gass such as...

what are the different mechanisms that cause plasma emission?

So I've been researching Dense Plasma Focus devices for a while now and a question just occurred to me. Since the fill gass such as deuterium is being ionized and then compressed and fused in the Plasmoid, wouldn't some of the cathode material also be ionized and the trapped in the Plasmoid...

I was wondering if I could create plasma inside my own apparatus using a laser pointer and nitrogen..

Hello. Do you know that if you take grape to the microwave, you can make some plasma? I think so. () However, on internet is a lot of explanation why does thegrape in microwave produce plasma, but they are not good or they are different. I don't know some official theory. So, I have a...

Hi all. I am currently trying to determine the specifications of equipment I need to create a plasma. I am looking to generate a plasma in chamber of Helium at a pressure of about 0.6 Torr. My electrodes are around 17cm apart (giving me a pd of 10 Torr cm). By consulting Paschen curves, I see...

Does anybody know any topics within plasma physics that a 17 year could research in? I'm doing a qualification called the EPQ where students undertake a research project in any topic they would like and write a 5000 word essay. I'm in year 12 and have taken As level Maths and Further Maths. I...

dear sir, when hydrogen atom is converted to plasma state, the free electron must be released. i am curious to know where does this electron go in case of plasma in stars. thank you.

Ok so I recently read this article (http://www.extremetech.com/extreme/184280-focus-fusion-has-cheap-clean-earth-saving-fusion-power-been-right-under-our-noses-all-along). This gave me a few ideas and a few questions. I would like to create a smaller version of this setup to fuse deuterium into...

I am in a forum where there are two EU crackpot theorists that insist on the universe being infinite and static. Since the universe is 98.6% plasma; I asked them if plasma has mass. I am not a physicist but I know that a static universe cannot be if this plasma has mass as this would cause the...

I need to find the correct voltage to apply to a wire grid in order to repel a plasma of which I know the density (free electrons per volume) and the particle energy in eV. I see a Debye sheath as being analogous to what I will create with such a charge. The way I see it is that I will have...

what are the differences between plasma and ionized gas? Thanks

I am an electrical engineering student doing my third year. I am interested in doing research in making fusion energy a commercial energy source by doing research in current techniques and also interested in creating new techniques for making fusion process continuous and efficient than...

Impact of magnetic field on a "dirty" plasma. This follows on from an earlier post of mine, which is now closed. I can also now disclose that it refers to my UK Patent Application GB1312183.5, which claims (in essence) that a linear motor can be used as a compressor for a jet engine. That...

(Wasn't sure on the right section for plasma physics, I apologise if this is wrong).I'm reading up right now on a plasma surrounded by a tokamak wall, and the assumption of ideal magnetohydrodynamics - which assumes very little internal electrical resistivity and so the plasma can be assumed as...

So far I've only found some leads into the use of magnetohydrodynamics theory in designing liquid metal cooled reactors. Anyone know of any other topics?

I currently have a 40-in Sharp LCD Aquos (5 years old) and I want to upgrade to a 50-in or 60-in LED or Plasma TV. My 40-in Sharp has a very clear picture when using the HDMI inputs. I am looking at Samsung, Panasonic, LG, and Sony models. Won't the picture (that I am used to on my 40-in screen)...

I'm a Physics student in the UK planning to apply for a PhD in Plasma Physics this autumn, in the area of Magnetic Confinement Fusion (MCF) specifically. The UK has a rather limited MCF university network, with only 3 universities playing a significant part. Two of these, Oxford and Imperial...

I know that fermions and bosons can thermodynamics can be calculated via the Fermi-dirac or Bose_Einstein distributions, However I've been having difficulty finding the EoS (Equation of state) and thermodynamic distribution metrics for the quark-Gluon plasma. So far I have the following...

if we have 3  plasma ball.and they have the same pressure gas ...one have low current power .the scond have  middle current power .the third have strong current power .. ...so which will of them produce ...light ..plasma ...spark..

What happens when a electron travels through the plasma? Would it be likely that most of the electrons hit a nuclei or not? Would a beam of electrons work like a current through the plasma? Can you send electron beams with different voltage, and would it matter? In a hot plasma it's...

I keep coming across the word apical and basolateral membrane in my study of plasma membranes of cells. I am wondering if the apical membrane is towards the inside of the cell (cytoplasm) or towards the outside ?

Question about plasma membranes... I read this online and am wondering if this is true. It said that - "When you think about a membrane, imagine it is like a big plastic bag with some tiny holes. That bag holds all of the cell pieces and fluids inside the cell and keeps any nasty things...

Hello Physics Forums! I've been educating myself on electrostatics, electronics, and electromagnetics and I have come to the topic of plasmas. I understand that plasmas are essentially charged gases - but their behavior is so disparate from regular gases that they are classified as the fourth...

Guys can you please tell me how fast/slow Alfven waves propogate in High/Low Beta Plasma? I need to derive equation cannot find any clue on that! Please be so kind to help me please!:rolleyes:

Which has the best program/research in plasma physics? I would have said Wisconsin but Alcator CMOD got its funding back this year so maybe MIT? I am talking about either the engineering or physics departments, doesn't matter.

I have been reading a patent by Gene Meeks of a plasma multipactor. Meeks was the right hand man of Philo Farnsworth the "father of television" and worked with him on the 'fusor' - a small nuclear fusion device. Meeks's multipactor appears to be a self sustaining over unity power device...

Hallo Physics Forum i was woundering how to make hydrogen plasma, i think i cloud be done simple by applying voltage though the gas, though i don't know how much voltage i whould need or is there a better way of duing it ?

The way I understand plasma is that is almost a gas except some of the electrons of separated from the nuclei entirely making positively charged. Is there a temperature in which Iron is by definition a gas, and not a plasma? Also, can something like a noble gas become a solid?

hello I need to know about return current formation at beam plasma system, in a simple way. how It is formed?

In some texts about plasmas, the plasma oscillations are discussed at the extreme of no Thermal motion. One example is the one in wikipedia: But I can't accept that approximation.Because it is assuming that we have a kind of motion called thermal motion and other kinds which arise from other...

At what temp does nitrogen becomes plasma? What about oxygen? I am using a spark gap to turn air into plasma, I was wondering what temp is the air that the spark gap is flying through? Does the air in that area keep getting hotter and hotter the longer the spark gap is present?

Most ideal light radiates uniformly in all directions. It means that for each photon, the probability of each direction is the same for a single photon. The specific optical resonator design enables a laser beam to propagate in one definite direction. Could anyone tell me what modifications does...

It says DC in 12volts but I'm not sure how many amps this thing can handle... I don't want to plasma myself so I was looking for helpful answers, thanks guys pic of globe (paid $8 not bad) http://postimg.org/image/462gwlj5v/

Hello all, I've been examining plasma physics and electricity (or at least trying to with a search engine) and have a few questions. 1. Can plasma be polarized? For example, if a magnet is placed with the "north" polarity near a magnet, will it maintain that shape? 2. If a wire carrying an...