Re: Can this be done?

On Sat, 02 Apr 2005 12:05:23 -0500, Phil Hobbs wrote:

> Jim Thompson wrote:
>> On Sat, 02 Apr 2005 01:15:46 GMT, James Meyer <jmeyer@xxxxxxxxxxx>
>> wrote:
>>
>>
>>>On Fri, 01 Apr 2005 19:36:47 -0500, Phil Hobbs <pcdhSpamMeSenseless@xxxxxxxxxx>
>>>wroth:
>>>
>>>
>>>>Dear All:
>>>>
>>>>I have a possibly very interesting instrument application that requires the
>>>>application of a very large ac voltage, about 3 kV p-p anywhere between 20
>>>>and 50 GHz--it doesn't much matter where.
>>>>
>>>>The actual power dissipated in the instrument is quite small, so I don't want
>>>>to use a radar transmitter to drive it. Pulsed operation is fine--duty
>>>>cycles of at least 1% are needed, though.
>>>>
>>>>Waveguides and striplines for these frequencies are quite small, which leads
>>>>me to worry about corona, rf arcs, and so on.
>>>>
>>>>I don't mind using vacuum if necessary.
>>>>
>>>>Any ideas for less than about $20k in parts?
>>>>
>>>>Thanks,
>>>>
>>>>Phil Hobbs
>>>
>>> I *was* going to tell you *exactly* how to do it for about 100 dollars
>>>but I changed my mind when you posted *exactly* the same message *three* times.
>>>
>>>Jim
>>>
>>
>>
>> Getting crabby in our old age are we ?:-)
>>
>> Phil is probably cursed with Outhouse Excuse.
>>
>> ...Jim Thompson
>
> Nah, no such excuse, I use Mozilla--it turned out to be a SMTP relay problem.
> I was sending a bcc: to my email account, which the relay complained about,
> but silently sent the NG posting along each time.
>
> <abject-humility>
> I deeply apologize that I have inexcusably reduced the wisdom-to-noise ratio
> of this august NG so much--we almost never get repetitive messages here. ;)
> </abject-humility>
>
> Doing this deep in the guts of a magnetron is a good idea, though it might be
> hard to get the resulting soft X-rays out of the cavity. (The X-rays are
> what I'm interested in--details must be left vague at present.) How big a
> voltage swing do you think I can get in, e.g., an evacuated waveguide
> resonator before it turns to lava?
>

What is a soft X-ray? What is the relationship between these soft X-rays
and the 30 GHz (or whatever) radiation you mentioned in the original post?

I always thought that X-rays were gamma rays with frequencies far beyond
the optical. 30 GHz is far below the optical, obviously. No doubt there is
something I'm missing, possibly due to my ignorance concerning magnetrons.

> Cheers,
>
> Phil Hobbs

-- Mac

.