why are lasers better than neutral particle beams?

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kojikun
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Post by kojikun »

I'm going to pull myself out of this debate. My final conclusion is that lasers can achieve greater power but suffer from the ability to be reflected. Even military megawatt lasers can be reflected, tho probably with active liquid cooling.

The advantage of an NPB is the lack of reflectability but it suffers from low energy.

That said, they each have their own uses and I'm not going to discuss the Lasers v NPBs anymore.

However, I will tell you where to buy a CO2 laser tube! :)
Where can I buy these lasers! How big are they? Will they fit in my hand?
EBay often has CO2 cutting laser tubes up or auction. I searched, none now, but they usually run a few hundred bucks per tube. Theres a few powersupplies up for sale right now tho.
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Post by Arrow »

Thanks for the info Clay.
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Post by The Prime Necromancer »

This question is only mildly related, but I figured I could ask it here instead of making another thread that will probably only get a few replies.

Would a NPB in real life look anything like what we tend to see from sci-fi energy weapons (big glowy beam of light)? I know that a laser does not, as the light only radiates in one direction, the direction of the beam. But what about an NPB? I would be inclined to think no, but I was wondering if someone could inform me.
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Post by jaeger115 »

This question is only mildly related, but I figured I could ask it here instead of making another thread that will probably only get a few replies.

Would a NPB in real life look anything like what we tend to see from sci-fi energy weapons (big glowy beam of light)? I know that a laser does not, as the light only radiates in one direction, the direction of the beam. But what about an NPB? I would be inclined to think no, but I was wondering if someone could inform me.
No, unless the weapon is extremely powerful, charged, and in an atmosphere. There, I would assume that the charged ions will set the surrounding air off, causing multiple lightning arcs radiating out from the beam. :shock:
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Post by kojikun »

an NPB in space would be invisible. An NPB in atmosphere would probably ionize the surrounding air thanks to shear energy density. But it wouldnt go very far, maybe a few tens of metres.
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Post by kojikun »

oh, yeah, and the ionized air would glow purple and probably be a diffuse cloud with nice arcs. not quite sure.
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Post by jaeger115 »

oh, yeah, and the ionized air would glow purple and probably be a diffuse cloud with nice arcs. not quite sure.
Why purple?
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Post by SWPIGWANG »

*thinks for a moment*

what about a particle weapon that uses charged particles and electric fields and merge the beam to create a neutral one?

I think the simple electron gun infront of you can accelerate electrons to impressive velocites. (unless you are a LCD using bastard) How hard would be to scale it up?
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Post by jaeger115 »

I think the simple electron gun infront of you can accelerate electrons to impressive velocites. (unless you are a LCD using bastard) How hard would be to scale it up?
I think the result of it firing would be one of massive lightning strikes. :)
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Post by kojikun »

Why purple?
Nitrogen glows purple when pumped with high voltage. The air is 79% nitrogen or something like that. Sparks through air are also hotpink-purple so its a logical conclusion that other high energy beams would cause air to glow that same color.
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Post by Admiral Valdemar »

Think like a purple version of the Swordfish II beam cannon in Cowboy Bebop. But a lot faster.
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Post by ClaysGhost »

SWPIGWANG wrote:*thinks for a moment*

what about a particle weapon that uses charged particles and electric fields and merge the beam to create a neutral one?
I don't understand what you mean there. Merge with what?
I think the simple electron gun infront of you can accelerate electrons to impressive velocites. (unless you are a LCD using bastard) How hard would be to scale it up?
Electron beams do not propagate well at all in atmosphere, which is why CRTs are evacuated. Also, they would constitute a charged particle beam which will disperse more rapidly than an NPB due to the electrons repelling each other.
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Post by kojikun »

Electron beams do not propagate well at all in atmosphere, which is why CRTs are evacuated. Also, they would constitute a charged particle beam which will disperse more rapidly than an NPB due to the electrons repelling each other.
Start that sonova bitch on a nice muggy day and you'll find a bolt of electricity knocking your ass to the ground faster then you can blink ;)
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Post by ClaysGhost »

kojikun wrote:
Electron beams do not propagate well at all in atmosphere, which is why CRTs are evacuated. Also, they would constitute a charged particle beam which will disperse more rapidly than an NPB due to the electrons repelling each other.
Start that sonova bitch on a nice muggy day and you'll find a bolt of electricity knocking your ass to the ground faster then you can blink ;)
Tesla coil, maybe. A hot-cathode electron gun, no.
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Post by Admiral Valdemar »

ClaysGhost wrote:
kojikun wrote:
Electron beams do not propagate well at all in atmosphere, which is why CRTs are evacuated. Also, they would constitute a charged particle beam which will disperse more rapidly than an NPB due to the electrons repelling each other.
Start that sonova bitch on a nice muggy day and you'll find a bolt of electricity knocking your ass to the ground faster then you can blink ;)
Tesla coil, maybe. A hot-cathode electron gun, no.
Always wanted a Tesla coil defende system. Basically you have these huge coil towers outside the perimeter fence, anything outside the fence gets zapped, but anything behind the fence is okay since the metal fence offers the path of least resistance for the bolt. Think of it as an unguided CPB cannon turret.
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Post by kojikun »

Always wanted a Tesla coil defende system. Basically you have these huge coil towers outside the perimeter fence, anything outside the fence gets zapped, but anything behind the fence is okay since the metal fence offers the path of least resistance for the bolt. Think of it as an unguided CPB cannon turret.
Wouldn't work. The TC would discharge to the fence sooner then anything else. Thats the whole problem with CPBs, they are diverted by the SLIGHTEST change in local charge density, as well as magnetic fields.

You're better off hooking the tesla coil up directly to the fence so anyone who touches it gets zapped, or making a large band around the defended area with alternating strips of metal with 5-10KV and 1+ amps running through it so when anyone steps on the bands they get shocked to death. Or just build an electrified WALL to block people AND vehicles.
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