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Discussion board help and admin topics => Half Baked Ideas => Topic started by: Magluvin on February 08, 2011, 11:41:32 PM

Title: make a xray detection device, and others for your project safety =]
Post by: Magluvin on February 08, 2011, 11:41:32 PM
Hey All   

This 1 page forum discussion is very informative and I think I can find more like it.

Its about making a xray detector.  =]   

http://www.eng-tips.com/viewthread.cfm?qid=38625&page=51

What other waves are we worried about?  Gama? My ex wifes eyes when I came home late?  ;]

Maybe if things get real bad here on this electron called Earth, these may come in handy.

I will look further into things that are commercially available, as there are cameras and software, cards that glow in beams of radiation. 

I think we should look at some of the devices we work on just to be safe. Jimboot was getting headaches,nausea from an Ossie motor. 

If we can build most of what we need cheaply, then everyone should have one.   ;)

Im going to dig.  Be Safe.

Mags
Mags
Title: Re: make a xray detection device, and others for your project safety =]
Post by: e2matrix on February 09, 2011, 01:49:44 PM
While it wouldn't be quick or simple isn't photographic film effected by xrays?  Not just xray type like dentists use but regular old camera film will show effects from xrays I believe.
Title: Re: make a xray detection device, and others for your project safety =]
Post by: ramset on February 09, 2011, 05:25:10 PM
e2
film would be cheap,however a meter or alarm or something real time, so when we're playing this type of "Event"
will be noticed immediatly !

For several very good reasons.

User Darkspeed posted this link

http://unitednuclear.com/index.php?main_page=index&cPath=2_9

Chet
Title: Re: make a xray detection device, and others for your project safety =]
Post by: Magluvin on February 11, 2011, 12:04:30 AM
Here is a guy that shows how to get a photo diode to detect xrays/gamma rays by coating the face of the diode with a chemical that emits light when it encounters these rays, and the diode reacts to the light. It shows to even fully cover the photo diode so outside light does not com into play.  Its not a complete detection device, but I found it interesting.

http://www.noah.org/science/x-ray/detector/

Mags
Title: Re: make a xray detection device, and others for your project safety =]
Post by: quarktoo on February 11, 2011, 06:48:41 AM
If you break open a TV picture tune and get the phosphor screen out of it, will that glow when hit with gamma radiation? If so could you replace the zinc with some of that material?
Title: Re: make a xray detection device, and others for your project safety =]
Post by: Groundloop on February 11, 2011, 04:45:05 PM
This circuit may work for x-rays also. It depends on the Geiger-Müller tube used
as an detector. I have not build this circuit but I did build a similar circuit many
years ago. I hope that this is what you are looking for.

The boost converter coils can be built onto a small ferrite toroid.

Groundloop.
Title: Re: make a xray detection device, and others for your project safety =]
Post by: CompuTutor on February 11, 2011, 04:51:32 PM
Quote from: Magluvin on February 08, 2011, 11:41:32 PM
What other waves are we worried about?
Gamma?
My ex wifes eyes when I came home late?  ;]

Heheh, good one,
good thing they can't actually kill with those stares, isn't it...
Title: Re: make a xray detection device, and others for your project safety =]
Post by: Magluvin on February 11, 2011, 07:26:02 PM
Hey Q2
They say it is the electrons from the electron guns that make it through the tiny hole in the positively charged metal screen close to the phosphorus. But maybe its something else.
I know that the screens are incredibly thick and doped with lead to help contain radiation. Ever lifted a 35in glass set?  Well most of the weight is the front of the screen.

Hey Groundloop

Thanks for the schem.  ;]   Ill check out availability of the tubes and prices to see if it is price viable for all.  There must be a solid state device by now that can replace the tube and not need the hv supply. But if not, this will do fine.  Thanks again. ;]

Hey Comp
Well eventually she wouldnt turn them off, so I ran like hell. ;]

Mags