Search found 89 matches

by iRad
10 Oct 2018, 10:47
Forum: Detectors
Topic: Nice effect in NaI(Tl) crystal!
Replies: 3
Views: 1643

Re: Nice effect in NaI(Tl) crysal!

Luuk - Thanks for sharing. I did not know that afterglow could be a problem with NaI(Tl). Nice detective work. Tom
by iRad
09 Oct 2018, 09:15
Forum: Detector drivers
Topic: GS-USB-PRO Sneak preview
Replies: 8
Views: 2563

Re: GS-USB-PRO Sneak preview

Steve - Looks great and that is normal behavior for setting of sample rate. Cheers, Tom
by iRad
06 Oct 2018, 21:10
Forum: Detector drivers
Topic: GS-USB-PRO Sneak preview
Replies: 8
Views: 2563

Re: GS-USB-PRO Sneak preview

Steven - Great looking product with nice connectivity. Can you reveal voltage range/power info and USB audio specs (eg. bit rate and resolution, S/N ratio, DAC). Fantastic so far! Tom
by iRad
10 Sep 2018, 14:21
Forum: Detectors
Topic: 2"x2" CsI(Tl) detector
Replies: 13
Views: 5085

Re: 2"x2" CsI(Tl) detector

I was able to finish putting together a nice 2X2 CsI(Tl) detector this weekend using one of Luuk’s fine crystals. I have been trying to complete the project for the last month, but very happy with the final results. I built the detector extra rugged for field use, and included a Ludlum style C conne...
by iRad
01 Sep 2018, 21:58
Forum: Detectors
Topic: 2"x2" CsI(Tl) detector
Replies: 13
Views: 5085

Re: 2"x2" CsI(Tl) detector

Steven Nice looking probe and excellent results. Certainly a keeper, especially since CsI(Tl) is excellent for field work. You now have a probe that is smaller than your standard 2" probe and with the high density of CsI(Tl) it's probably as versatile for a range of energies as a 3" NaI(Tl) probe wo...
by iRad
20 Aug 2018, 02:56
Forum: Detector drivers
Topic: New GS product preview
Replies: 10
Views: 3264

Re: New GS product preview

Thanks Steve, looking forward to taking one for a test drive. Please keep us updated on the details. Tom
by iRad
15 Aug 2018, 10:17
Forum: Detector drivers
Topic: New GS product preview
Replies: 10
Views: 3264

Re: New GS product preview

Wow Steve, some very nice and useful improvements! Can hardly wait to get my hands on one... :)
Cheers, Tom
by iRad
15 Aug 2018, 08:46
Forum: Detectors
Topic: 2"x2" CsI(Tl) detector
Replies: 13
Views: 5085

Re: 2"x2" CsI(Tl) detector

Luuk - Okay thanks, now I think I know exactly what the issue was. I also used a an R6231 8-stage PMT, which works excellent even at lower voltages with NaI(Tl), but now it makes sense that I was not using enough voltage to see the lower energies in the spectrum for this crystal where they should ha...
by iRad
15 Aug 2018, 04:20
Forum: Detectors
Topic: 2"x2" CsI(Tl) detector
Replies: 13
Views: 5085

Re: 2"x2" CsI(Tl) detector

Very nice results Luuk! Do you remember the voltage you used on the R6231 PMT for your tests? I already made a nice detector with the crystal you sent me, but I'm having some issue I think with the PMT I used. I get excellent resolution (about 6.5% for Cs137), but for some reason I'm not getting any...
by iRad
19 Jul 2018, 04:16
Forum: Spectrum
Topic: Fukushima soil
Replies: 9
Views: 2659

Re: Fukushima soil

I have a 2X2 Luuk built 6% detector that can see it nicely. I also have a couple other Scionix detectors in the 6% range that pick it out nicely. Unfortunately, 4 to 5% (or better) is out of the range of NaI(Tl) crystals, and into the range of exotically expensive detectors... Cheers, Tom