Cheap Anti-Matter?

Point out news stories, on the net or in mainstream media, related to polywell fusion.

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djolds1
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Joined: Fri Jul 13, 2007 8:03 am

Post by djolds1 »

Aero wrote:90 MJ per µg - OK, How do we translate that in to seconds, specific thrust? Must be awesome.
Two links:
http://rapidshare.com/files/165982025/F ... h.pdf.html

http://rapidshare.com/files/165982026/R ... N.pdf.html

Rapidshare will disable them after 10 downloads or 90 days.
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djolds1
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Post by djolds1 »

Aero wrote:From the second paper I understand that by shooting a relatively small number of antiparticles at fissile material, fission and even maybe fusion can be initiated with corresponding energy released of 90 mega joules per micro gram.
The standard concept is to use antimatter to ignite fission. After that you use the standard fusion-fission stacked cycle.

10 downloads, 90 days:
http://rapidshare.com/files/165983651/O ... 3.pdf.html
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tomclarke
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Post by tomclarke »

Nothing posted here has indicated technology which can produce copious anti-protons (which can be used as nuclear reaction catalysts). All we have is mention of anti-electrons.

There is no reason to connect generation of positrons with generation of anti-protons. So I am afraid this technique, useful though it may be, is a red herring.

Best wishes, Tom

Mike Holmes
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Post by Mike Holmes »

Red herring in terms of this form of propulsion, right? Again, any other potential uses for positrons?

Just curious.

Mike

gblaze42
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Joined: Mon Jul 30, 2007 8:04 pm

Post by gblaze42 »

Mike Holmes wrote:Red herring in terms of this form of propulsion, right? Again, any other potential uses for positrons?

Just curious.

Mike
I wouldn't say that, NIAC had some work on a positron powered space transport.

http://www.niac.usra.edu/files/studies/ ... 7Smith.pdf

more Here;

http://www.niac.usra.edu/files/library/ ... 7Smith.pdf

Brandon
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Location: McMaster University, Hamilton, Ontario, Canada

Post by Brandon »

An interesting note on anti-proton production: NONE of the presently operational anti-proton producing facilities are specifically designed for this purpose, and at present rates approximately 1 ng are produced per year. With optimizations to processes and anticipated developments, this production capability could be raised by at least 3 orders of magnitude. Check out this journal produced by NASA:

really long url

Aero
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Post by Aero »

Brandon - Yes that is quite interesting, Thanks.
Aero

djolds1
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Joined: Fri Jul 13, 2007 8:03 am

Post by djolds1 »

Brandon wrote:An interesting note on anti-proton production: NONE of the presently operational anti-proton producing facilities are specifically designed for this purpose, and at present rates approximately 1 ng are produced per year. With optimizations to processes and anticipated developments, this production capability could be raised by at least 3 orders of magnitude.
Robert L. Forward made the same point in a popular anthology.

Brandon wrote:Check out this journal produced by NASA:

really long url
Thanks! :)

Duane
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Brandon
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Location: McMaster University, Hamilton, Ontario, Canada

Post by Brandon »

Cool. Amazing to think about how easy achieving plasma would be with the high energy yield of antimatter... antiprotons could be fired into the reactor through the injection guns being currently developed (well, a modified version designed for extreme containment so as to avoid a giant crater). The advancement of penn traps for storage will be the deciding factor on antiproton feasability as an ignition source.

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