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Registered Member #1938
Joined: Sun Jan 25 2009, 12:44PM
Location: Romania
Posts: 699
Hi Stella, what have you been working on, lately?
I will do everything in the software from this point, and yes the target is visualizing the spectrum. After all I am trained as a software developer, so it's time to put that to some good use.
I have two alternatives: - with the current setup, simply code the analyzer software for a PDA with Bluetooth (Android, Windows Mobile, etc) -or- - get a graphic LCD and hook it directly to the microcontroller counter I made, and draw the spectrum direclty on the LCD.
Registered Member #543
Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
radhoo wrote ...
Hi Stella, what have you been working on, lately?
I will do everything in the software from this point, and yes the target is visualizing the spectrum. After all I am trained as a software developer, so it's time to put that to some good use.
I have two alternatives: - with the current setup, simply code the analyzer software for a PDA with Bluetooth (Android, Windows Mobile, etc) -or- - get a graphic LCD and hook it directly to the microcontroller counter I made, and draw the spectrum direclty on the LCD.
I'll post progress here.
I've been working on imaging <5 keV, where I believe Plazmatron is also scuttling about in the dark like a trilobite on the bottom of an ancient sea.
I think I have some basic but functional MCA software somewhere, and will send it to you if I can remember where I've put it.
Registered Member #2431
Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
Radhoo, where did you snag the scintillator tubes from ? and for how much? in USD if you please, as EUROs are the currency of the devil.
This is a great porject, i mean whoa! you can make Qualitative and Quantatative measurements at the same time, way more useful then the simple clickers.
Registered Member #1938
Joined: Sun Jan 25 2009, 12:44PM
Location: Romania
Posts: 699
Stela, please send me the software if you can find it! Looks like you're doing some very interesting stuff, did you start a thread where we can check your progress? (would love to)
Patrick, the probes where cheap, because I've been lucky enough to get them from someone that would have sold the aluminum tubing and trow the rest. It's funny how economy works: you buy an expensive TV, but then when a few components inside break, it becomes garbage.
A little update on my progress. The Atmega isn't capable of recording enough samples per second, so I had to revert to using the sound card of my pc (up to 48000 samples per second). By doing so, I've been surprised to see that not only X-rays can be detected with my probes, but also little quantities of Cs137 that I currently have in some spark gaps. After all, this probe uses a relatively large NaI crystal (3.2cm x 2.5cm) that should work also for higher energies.
Here is an interesting image:
The first 30seconds of the recording shows the background radiation, the rest is the probe output with the Cs137 brought close to the NaI crystal head. So I'm back on the right track.
Registered Member #543
Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
radhoo wrote ...
Stella, please send me the software if you can find it! Looks like you're doing some very interesting stuff, did you start a thread where we can check your progress? (would love to)
It has taken me three weeks to find out how best to mount a wasp's wing on a 0.011 mm polypropylene film to act as a microscope slide with a 4.99 keV transmission profile that looks like this:
At first I thought it a work of staggering genius to stroke the film with a tiny piece of silk, and stick the specimen to it by static - but no sooner had the collimated low energy nanometric waves (No x-word here, thank you!) passed through the slide, than the static vanished together with the wasp's wing, which floated away to who knows where. And wasps aren't easy to get when you want one.
Registered Member #1938
Joined: Sun Jan 25 2009, 12:44PM
Location: Romania
Posts: 699
Proud Mary wrote ...
At first I thought it a work of staggering genius to stroke the film with a tiny piece of silk, and stick the specimen to it by static - but no sooner had the collimated low energy nanometric waves (No x-word here, thank you!) passed through the slide, than the static vanished together with the wasp's wing, which floated away to who knows where. And wasps aren't easy to get when you want one.
Yet another adventure in the world of science . Keep us posted!
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Scintillation Probe (Photomultiplier/NaI)
