[sdiy] OT: Today's toxic mess

[Rob]

hey now, how about those structural x-ray setups by Physics Intl / HP? Those
can put out some power. Of course, its only for a few nanoseconds or so. ;)

You could see through the cannon barrel and use a multistage trigger to take
photos of the bullet as it was fired from the cannon breech and see what it
was doing inside the barrel. Amazing that it would go cleanly through a
total of about 6 inches of silicon inpregnated hardened steel and still have
a perfect x-ray with all the details intact.

Someone accidentally x-rayed some guy's rear end when they trigd the array..
Nope, no polyps here! hehe.. ;) The guy prlly has prostate cancer now
though.

Rob

----- Original Message -----
From: "Glen" <mclilith at ezwv.com>
To: "KA4HJH" <ka4hjh at gte.net>
Cc: <synth-diy at node12b53.a2000.nl>
Sent: Thursday, February 22, 2001 9:40 PM
Subject: Re: [sdiy] OT: Today's toxic mess


> At 09:29 PM 2/22/01 , Terry Bowman, KA4HJH wrote:
>
> >>P.S. I used to install and repair X-Ray machines in the past, but I've
> >>never personally owned an X-Ray tube.
> >
> >Why do they rotate, anyway? I was hoping someone would tell me.
>
> They rotate because the anode would become pitted too badly if it remained
> stationary. Since it rotates, the "impact area" is spread over a larger
> area and less damage is done to the anode. There is a lot of of energy
> involved here, and anything to make such an expensive component last
longer
> is worth considering. Hospital X-Ray machines are capable of generating up
> to 150kV or more, and perhaps 600mA or more at the X-Ray tube. However,
you
> won't usually see a machine pressed to its limit in both voltage and
> amperage at the same time, and energy levels tend to be lower in typical
> use. If a machine *is* operated at maximum power levels, then the exposure
> time is always very brief. This helps ensure the longevity of the X-Ray
> tube, and also the patient in front of it.  :)
>
>
> Later,
> Glen