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Registered Member #162
Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3140
I suspect that we all do not want to make recommendations based on little experience :)
on the assumption that you will be using a crt flyback transformer, the supply to your x-ray tube will be <= 35 kV at a couple of mA, the lower end of 'hard' x-rays, and low power ... ten feet of air is probably enough, if worried, put up a concrete slab >= 1" thick as a shield. (lead has about 200x the absprbtion of air, so 10ft. air = 15mm lead = more than enough.)
I recently bought a 1.4mm thick, 223mm x 330mm sheet of lead for GBP 6.16 incl. p&p enough for some nice underpants ;)
what kind of amateur scientist does not have lead sheeting handy ?
Registered Member #96
Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4059
Has a UV tube here, pretty sure it still works.
Yes, X-rays will work but please be VERY careful. I learned the hard way that even low levels can be harmful to equipment and people, you can get skin lesions even down to 9keV but never did find out if it was the vacuum pump oil (HF contamination) or the tube(s).
Registered Member #230
Joined: Tue Feb 21 2006, 08:01PM
Location: Gracefield lower Hutt
Posts: 284
You do not mention how much voltage you are going to use on your x-ray tube x-ray tubes output max energy at around 2/3 the voltage so 100kv applied gives a peak at 60kV with a little energy at your max Voltage x-ray energy gets more penetrating with voltage 60kV x-rays make iron transparent needing a higher Z material to shield A few watt seconds of x-ray energy is not going to turn you green. You say you are going to use a flyback so this limits you to around a 100watts max. ps a standard chest x-ray is 90kV at 0,3 amp for 0.3 sec which can penetrate through the chest area (thickest part of body) other areas use less voltage
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radiation mutagenesis, plants
