Search found 206 matches

by Keegan
Thu Mar 20, 2008 8:57 am
Forum: Implications
Topic: Airbreathing SSTO
Replies: 48
Views: 40387

^Yep Interesting read, although i havent got to the scalar waves bit yet ....hmmm. I need to say one thing here though.... REDUNDANCY If you have ever worked in aerospace very soon you will find everything has at least a twin redundant system. Engines, Pilots, Hydraulics, Avionics, Wheels. Some of i...
by Keegan
Thu Mar 20, 2008 7:43 am
Forum: News
Topic: Room Temperature Superconductors?
Replies: 5
Views: 5171

Its a Fake !

*Warning Sensationalistic Headlines* This is not room temperature superconductivity ! LOL i read this on slashdot this morning and just new that it would pop up here. What makes slashdot in my opinion, isnt so much the articles but the readers responses, collective wisdom. Use it. From Slashdot Rea...
by Keegan
Sun Mar 02, 2008 11:07 am
Forum: Theory
Topic: Vircators - (VIRtual CAthode OscillatOR) circa 1980
Replies: 11
Views: 7437

Quoted from ^Above^

Image
by Keegan
Sun Mar 02, 2008 6:50 am
Forum: Theory
Topic: Vircators - (VIRtual CAthode OscillatOR) circa 1980
Replies: 11
Views: 7437

Hey all, i just finished reading a great Phd thesis by Yeong-Jer Chen. Compact, repetitive Marx generator and HPM generation with the Vircator Awesome details and construction of a portable marx generator, e field and power circuit design of a portable vircator. Also had a very interesting analysis ...
by Keegan
Sun Mar 02, 2008 6:28 am
Forum: Theory
Topic: Virtual Polywell
Replies: 468
Views: 197816

It definitely does not make sense to me - more squeeze of field implies better confinement which implies less electron density into the center. I understand. The only way it makes sense is that i have worked in aerospace and know how "illogical" fluid flow is. Convergent ducts accelerate fluid flow...
by Keegan
Fri Feb 29, 2008 4:12 pm
Forum: News
Topic: Gold Plated Fusion Lab
Replies: 1
Views: 3007

Game over Man

Funny Thing That. I saw it on slashdot.org this morning Was very close to commenting " Lidsky correctly pointed out the economical flaws of Maxwellian Neutronic Reactors more than 20 years ago. Its the 21st century and Non Maxwellian Anuetronic reactors such as the polwell are an insightful approach...
by Keegan
Fri Feb 29, 2008 8:29 am
Forum: Theory
Topic: Virtual Polywell
Replies: 468
Views: 197816

What I don't understand yet, is why Bussard put the electron sources at cusps instead of at the face of each coil. Hopefully I can find out with a model! Hey Mike. This topic was briefly discussed a little while ago. I cant find the exactl link but basically one can inject electrons into coil centr...
by Keegan
Thu Feb 21, 2008 4:18 am
Forum: Design
Topic: Words to the wise from Richard Feynman
Replies: 1
Views: 2569

^Funny i just read that in bed this morning.... Feynman was such a champ. I found his comments on the difference between bottom up and top down engineering to be rather poignant. He stressed that bottom up engineering, when you engineer each component according to its individual loads environment an...
by Keegan
Mon Feb 18, 2008 3:46 am
Forum: Theory
Topic: Vircators - (VIRtual CAthode OscillatOR) circa 1980
Replies: 11
Views: 7437

Found this great paper on how to drive a virtual cathode. A source that matches the resonant frequency can drive it. Provided it is the correct distance away as energy is reflected back from the virtual cathode into the electron beam. This can cause distructive interference if one is not carefull. W...
by Keegan
Mon Feb 18, 2008 2:44 am
Forum: Theory
Topic: Vircators - (VIRtual CAthode OscillatOR) circa 1980
Replies: 11
Views: 7437

Virtual Cathode Theory and Design of a Millimeter Wave Vircator. The advantage of the vircator over a reflex klystron is that the virtual cathode moves opposite to the electron beam propagation direction during the bunching phase resulting in enhanced electron densities unobtainable otherwise. The ...
by Keegan
Fri Feb 15, 2008 6:23 am
Forum: Implications
Topic: Using Polywell to burn suger cane... huh?
Replies: 40
Views: 28717

Typical thinking process: if we can put a man on the moon why can't everyone buy a moon excursion ticket for a buck ninety-eight Haha, Simon thinks they put a man on the moon...... oh j/k....... :D But seriously a few people mentioned space elevators. I am a hug fan of them but i cant see them happ...
by Keegan
Thu Feb 14, 2008 9:21 am
Forum: Theory
Topic: Vircators - (VIRtual CAthode OscillatOR) circa 1980
Replies: 11
Views: 7437

Missing where the ions fit into this device, Well they dont. :) It sort of looks like a cavity resonator, if I understand the physics correctly, The cavity is there just to confine the electron beam and alow a virtual cathode to form. The virtual cathode forms, oscillates and generates RF according...
by Keegan
Wed Feb 13, 2008 2:44 pm
Forum: Theory
Topic: Vircators - (VIRtual CAthode OscillatOR) circa 1980
Replies: 11
Views: 7437

Patent 4345220 wrote: It is another object of the invention to provide an improved microwave generator apparatus
capable of generating high power microwaves in the order of 10^10 to 10^12 watts
:shock: Dear God .....
by Keegan
Wed Feb 13, 2008 2:33 pm
Forum: Theory
Topic: Vircators - (VIRtual CAthode OscillatOR) circa 1980
Replies: 11
Views: 7437

Vircators - (VIRtual CAthode OscillatOR) circa 1980

We have been studying Plasmas for about 100 years now. After reading the POPS papers, it is easy to assume that we just recently married RF and Periodically Oscillating Plasma Spheres together. This is not the case. Presenting the Vircator "The present invention relates broadly to microwave generato...
by Keegan
Wed Feb 13, 2008 1:02 pm
Forum: Theory
Topic: Replacing Electron Guns
Replies: 12
Views: 8005

A smaller but also interesting problem is the fact that all accelerating charges radiate. I just found a comprehensive treatise on that subject . Wow. Despite Feynman's assurances, there is no general agreement in the literature about whether a uniformly accelerated charge radiates (in classical el...