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Simon

Mon Jul 31 2006, 12:12AM

Registered Member #32 Joined: Sat Feb 04 2006, 08:58AM
Location: Australia
Posts: 549

dan wrote ...

Ha.. After firing a TeraWatt laser there really isn't much use of firing a high energy particle accelerator after it down the same path. I mean everything in its path would have been obliterated by the first pulse. but I guess thatâ€™s your point.

That is the point. Accelerating particles to incredible velocities and energies is not very hard - in a vacuum. If you have something powerful enough to send subatomic particles a decent distance through air then the particles are not the most dangerous thing around.

As a loose analogy, think of a Tesla coil. You make a big, fancy, powerful coil and if it gives off sparks a metre long you get excited. A metre. As a weapon, it's more effective to hook the tank cap up to something like a taser.

KV3000

Mon Jul 31 2006, 08:22PM

Registered Member #100 Joined: Thu Feb 09 2006, 06:52PM
Location: Austria
Posts: 9

For those that want to experiment, try using a TW UV laser to blast an tunnel through the air before deploying the particle accellerator.

I think such a laser canÂ´t be bought at the next surplus store

Anyway range won't get much more than meters, adn I don't even think that such a vortex would cause anything more than a puff of warm air to target...

This weapon mustnÂ´t be lethal. I just want to have some fun with such a particle gun.

Marko

Mon Jul 31 2006, 09:30PM

Registered Member #89 Joined: Thu Feb 09 2006, 02:40PM
Location: Zadar, Croatia
Posts: 3145

Obivously you didn't look at the topic

I wouldn't call this a 'particle weapon' but rather some kind of plasma-vortex launcher or etc.

HV pulse caps are quite dangerous if you don't know what are you doing, poeople on 4hv mostly don't like others who are trying to blow themselves up...

KV3000

Mon Jul 31 2006, 10:18PM

Registered Member #100 Joined: Thu Feb 09 2006, 06:52PM
Location: Austria
Posts: 9

Well, everthing can be lethal, even some baby toys.

I know about the dangers of HV-caps.
With non lethal I mean that there are no TW laser tubes or radiactive particles.
HV-Caps and all the other HV-Stuff is easier to buy and to handle than such big lasers or an OMG particle

KV3000

Tesladownunder

Tue Aug 01 2006, 01:17AM

Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424

Sulaiman wrote ...

In the '70s I worked on an accelerator that produced electrons at reletavistic velocities
acceleration was by 80 MW of microwaves in a vacuum.
The beam exited via a thin titanium window and would travel several feet through the air.
During research for this project we came across information about a USSR accelerator
Incredible!
Helium nucleii were accelerated by microwave in an evacuated tube
The amazing thing was that they used massive vacuum pumps and NO window
The pumps produced near vacuum at the sealed end with the other end open
(a high energy alpha beam would destroy any 'window')
...Anyone heard of it?

I had started to make an e-beam with the target of 200keV through a .001 inch titanium window. Aiming for 6 inch air penetration. Bert Hickmans linear accelerator at 5MeV is used for his discharges into acrylic via a beam in air.
I did hear about a device with no port but it wasn't Russian and I didn't really understand it.

Peter

Sulaiman

Tue Aug 01 2006, 08:47AM

Registered Member #162 Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3140

I doubt 200 keV will travel very far through air,
like you say, maybe a few inches.

The accelerator I was working on was 10's of MeV. (up to 50 if I recall correctly)
You could literally call it a 'death-ray'
any tools left in the area became 'hot' waste.
But even more exciting was the target!
Liqud sodium cooled U235.
(in a 20 foot thick concrete walled room)
I'm pretty sure the project is no longer secret which is why I mention it.
(If you don't hear from me again, then I guess it's still secret!)

For up to a couple of MeV there was a tandem Vandergraph
or for home-scale maybe up to 1 MeV? (500kV x2 should be doable)
Maybe even a Marx could be used directly for up to 1 MeV pulses?

The pumping power required for an open-ended vacuum tube
is beyond the reach of any amateur, I think.

Dr. Drone

Wed Aug 02 2006, 08:02PM

Registered Member #290 Joined: Mon Mar 06 2006, 08:24PM
Location:
Posts: 1673

dan

Wed Aug 02 2006, 08:42PM

Registered Member #223 Joined: Mon Feb 20 2006, 06:42PM
Location: Ottawa, Ontario, Canada
Posts: 125

The glass screen would block any high energy particles dead in their tracks. plus I don't think a CRT tube from an ossiloscope would take a few 100kv without something breaking down. Plus why would you do that to a perfectly good ossiloscope when you can just give it to me.

Simon

Thu Aug 03 2006, 04:16AM

Registered Member #32 Joined: Sat Feb 04 2006, 08:58AM
Location: Australia
Posts: 549

Christopher Robin wrote ...

How about taking an old oscilloscope and focus the beam to a point in the middle of the screen and let it run for a few days till the phosphorus burns off (little dot). Then modify the scope power supply to a higher voltage. Now you have a nice little particle beam, Yes, No, Maybe?

That depends on what you mean by "a higher voltage" but I think the kind of answer you have in mind would be, "no".

Dr. Drone

Thu Aug 03 2006, 05:21AM

Registered Member #290 Joined: Mon Mar 06 2006, 08:24PM
Location:
Posts: 1673

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