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11 votes

How would an element behave that's a plasma at room temperature?

"Cold plasma" is a real thing. In short, the molecules are ionized, but only the electrons have a high temperature. The cold ions have most of the mass, so the net temperature is low. This ...
Christopher James Huff's user avatar
10 votes
Accepted

Venting Fusion reactor plasma to create a plasma shield?

Fusion reactors (well at least Tokomak design reactors) operate at a relatively low pressure - to the order of 2-3 atmospheres. And they have plasma volumes to the order of 100-1000 cubic meters (the ...
Penguino's user avatar
  • 6,917
8 votes

Can I shoot a synthetic solar plasma out of a rail gun?

You absolutely can do that, but I fear it's not going to work for your purpose. "shoot the stuff from a space ship in a forward direction and use the plasma as a plow to clear obstacles" ...
LSerni's user avatar
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7 votes
Accepted

How close can I get to a nuclear explosion with extreme shielding?

According to this website, tungsten has a latent heat of vaporization of 824 kJ/mol. One mole of tungsten is about 0.184 kg, so we get about 4,480 kJ/kg. There are $6.276\cdot10^{16}$ joules per 15 mt ...
BMF's user avatar
  • 6,530
6 votes

constructs of sentient plasma life in a brown dwarf

From the definition of plasma It consists of a gas of ions – atoms which have some of their orbital electrons removed – and free electrons. Plasma can be artificially generated by heating a neutral ...
L.Dutch's user avatar
  • 283k
6 votes
Accepted

How would an element behave that's a plasma at room temperature?

I'm considering a world where there's an element that's naturally a plasma. I'm wondering what the broad behavior of such an element would be. Would it be inherently unstable, dissipating quickly? It ...
Logan R. Kearsley's user avatar
5 votes

Can I shoot a synthetic solar plasma out of a rail gun?

Using rail guns? Probably not - well at least not very efficiently. As per my comment above what your describing amounts to a (giant if its to be effective as a weapon) plasma thruster. If your idea ...
Mon's user avatar
  • 16.2k
5 votes

What noise would a nuclear gas turbine make?

Musical answer here: Sound is a function of many things - but let's go through them: Pitch The pitch of a note (high or low) is related to the number of vibrations per second. These vibrations could ...
TheDemonLord's user avatar
  • 22.4k
5 votes

How close can I get to a nuclear explosion with extreme shielding?

First, some numbers. Assuming a reasonably clean fusion design at one meter we are looking at 2.67E15 rad of x-rays and 1.08E14 rad of neutrons. The latter is harder to stop so I'll look at it. 7cm ...
Loren Pechtel's user avatar
4 votes

Can I shoot a synthetic solar plasma out of a rail gun?

Tl/Dr: It takes a lot to plow through space like you want. Far more than is reasonable via rail-gun CME. Railguns do actually demonstrate a mass ejection when they fire. The plasma which is ...
Cort Ammon's user avatar
  • 132k
4 votes
Accepted

Plasma windows as justification for Free Electron Lasers?

A plasma, being a "soup" of charged nuclei and electrons, can be extremely opaque to electromagnetic radiation, because practically all energetic transitions can happen. This explains why a ...
L.Dutch's user avatar
  • 283k
3 votes

How would a "plasma torus", generated from Phobos to create a magnetosphere, look from the surface of Mars? How would it work?

First of all: This would probably be the wrong approach. A better approach will be described below. Now to the meat (or rather plasma) of the question: Background stuff: Plasma on its own doesn't ...
Teck-freak's user avatar
3 votes

What atmosphere composition would make my weapon shoot orange plasma?

Table from here Sodium (yellow) and calcium (orange) seems to be the closest fit to your requested color Every atom has a particular spectral characteristics when it is ionized or heated up. Some ...
Surprised Seagull's user avatar
3 votes

What kind of effect would a tank shell that create plasma on impact have on armour?

Not as much of an effect as you think. Doing some back of the envelope physics calculations: A M1 Abrams tank shells weigh around 18 kg. Modern capacitors have a max energy density of 9.5 Wh/kg. ...
sphennings's user avatar
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3 votes
Accepted

Is my Plasma Gun concept realistic? And if not what can I do to make it more feasible?

TL;DR: plasma weapons just aren't really very good. Yours seems unlikely to compare favourably against almost any other kind of weapon. Here's the problem with guns that fire plasmoids like this: hot,...
Starfish Prime's user avatar
3 votes

What would a cold plasma based force field feel like to the touch?

Its ouch time. An acid burns by donating ions to its surroundings. These ions will try to share or rip electrons of(f) other materials. plasma is a substance so hot the electrons leave the atoms ...
Demigan's user avatar
  • 45.2k
2 votes
Accepted

What would a cold plasma based force field feel like to the touch?

Don't keep your hand in the gas I assume that you're citing this: Summary Your "forcefield" consists of a gas cloud, contained in a small area. It's a plasma because you've dissociated one ...
Anon's user avatar
  • 3,079
2 votes

Venting Fusion reactor plasma to create a plasma shield?

Even if it were entirely practical (and it probably isn't, see Penguino's answer for some reasons why) it wouldn't be very useful as a shield against projectiles. The incoming matter in a railgun slug ...
Starfish Prime's user avatar
2 votes
Accepted

Electric Arc Discharge Plasma and other forms of Plasma tech as a weapon

Your character has modified an industrial tool. The plasma sources she has made her sword out of are usually kept in a line and used to break down large metal things for salvage. She has added ...
Willk's user avatar
  • 304k
1 vote

Electric Arc Discharge Plasma and other forms of Plasma tech as a weapon

The sword is likely to be heavy, so your character has to strong and skilled to wield this weapon. Besides, this weapon can twist and turn, you wouldn't want it to smack yourself in the face with ...
DialFrost's user avatar
  • 404
1 vote

How would an element behave that's a plasma at room temperature?

Q: I'm considering a world where there's an element that has an element that's naturally a plasma. I'm wondering what the broad behavior of such an element would be. Would it be inherently unstable, ...
Goodies's user avatar
  • 14.9k
1 vote

Viability of Plasma Weaponry for Handheld Purpose in SciFi

Instead of the plasma being kept in a magnetic field, you probably want it to not be generated until the operator pulls the trigger. That way, they're not carting around a ball of face-melting plasma. ...
KEY_ABRADE's user avatar
  • 12.8k
1 vote
Accepted

constructs of sentient plasma life in a brown dwarf

While plasma is often Very Hot, it doesn't have to be, additionally if they are able to control the plasma in order to exist, then they should be able to direct it from hitting what they don't want it ...
Nyra's user avatar
  • 1,993
1 vote

What could plasma life look like?

Plasma, being a collection of positive nuclei in a soup of free electrons, doesn't have a shape. It takes the shape of the confinement hosting it. I guess the same would still apply for a fictional ...
L.Dutch's user avatar
  • 283k

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