Search found 56 matches

by pietkuip
27 Oct 2018, 20:03
Forum: Detector drivers
Topic: GS-USB-PRO Sneak preview
Replies: 8
Views: 2924

Re: GS-USB-PRO Sneak preview

Just to ask if I understand the coincidence feature properly. So the USB connection is connected to an audio ADC circuit which has two channels for stereo. The new device has 3.5 mm connector that can accept an audio input signal for the other channel. That signal could come from a different kind of...
by pietkuip
27 Oct 2018, 19:13
Forum: Spectrum
Topic: Bremsstrahlung from tritium
Replies: 3
Views: 1672

Re: Bremsstrahlung from tritium

I took a spectrum with a Si-diode detector for the x-rays and found zinc K-alpha and K-beta:
viewtopic.php?t=35#p267
by pietkuip
09 Apr 2018, 18:45
Forum: General discussion
Topic: Neutron tube?
Replies: 4
Views: 2585

Re: Neutron tube?

There has been an effort to develop a pyroelectric accelerator as a neutron source, but I cannot find a commercial supplier.

Amptek has a pyroelectric x-ray generator: http://amptek.com/products/cool-x-pyroe ... generator/
by pietkuip
07 Apr 2018, 21:41
Forum: Spectrum
Topic: Thermal water, Bad Gastein
Replies: 3
Views: 1790

Thermal water, Bad Gastein

I was in Bad Gastein, and was a bit shocked by advertising signs for radon baths and radon gas treatments. So I took some bottles with me for analysis. This is from the Elisabeth source, with a running tap outside. The water was warm, about 40 or 50 C. The red spectrum is two days after I took the s...
by pietkuip
12 Feb 2016, 08:57
Forum: Detectors
Topic: Raspberry Pi muon microscope
Replies: 6
Views: 4627

Re: Raspberry Pi muon microscope

A question : Did you remove the cover glass from the CMOS sensor of the camera ? Lodovico Sorry, I had not logged in for a while. No, I did not remove anything, I just wrapped the camera in black electrical tape. Cosmic muons will penetrate anything, many meters of concrete. I used the NoIR camera ...
by pietkuip
26 Jan 2016, 09:40
Forum: Spectrum
Topic: Gamma spectrometry using eV CZT and PRA10
Replies: 11
Views: 6412

Re: Gamma spectrometry using eV CZT and PRA10

Are you aware of PIN diode types which are suitable for hobby gamma spectrometry ? It is difficult. I thought I had found something when I saw the spectrum on this page: http://www.carroll-ramsey.com/detect.htm So I wrote to them and they told me that it had been _very_ difficult to get that spectr...
by pietkuip
25 Jan 2016, 21:48
Forum: Detectors
Topic: Raspberry Pi muon microscope
Replies: 6
Views: 4627

Re: Raspberry Pi muon microscope

Interesting ! What is the position of the camera, vertical or horizontal ? Di you try to "irradiate" the pi camera with an electron source such as Sr90 ? The sensor plane is approximately vertical. Landscape or portrait does not matter now, but I will specify this when I have a stable setup. For te...
by pietkuip
25 Jan 2016, 08:25
Forum: Spectrum
Topic: Gamma spectrometry using eV CZT and PRA10
Replies: 11
Views: 6412

Re: Gamma spectrometry using eV CZT and PRA10

Nice. I did a test with our AmpTek diode detector if PRA would be able to achieve the resolution. I posted the comparison with the Amptek Pocket MCA a while ago: http://www.gammaspectacular.com/phpBB3/viewtopic.php?f=14&t=75&p=367#p338 About 1 % in both cases. But I have not always been able to get ...
by pietkuip
24 Jan 2016, 09:14
Forum: Detectors
Topic: Raspberry Pi muon microscope
Replies: 6
Views: 4627

Raspberry Pi muon microscope

Electronics are sensitive to ionizing radiation. With silicon image sensors, it is straightforward to detect the traces left by atmospheric muons and high-energy electrons. One just needs to get access to the raw sensor data, before any noise reduction or data compression. The Raspberry Pi and its P...