Search found 10 matches

by Zagros
09 Aug 2019, 05:02
Forum: Detectors
Topic: CSI Detector
Replies: 5
Views: 249

Re: CSI Detector

Hi Nicola, The detector is exactly as Tom described it, 13mm round, 38mm long, the crystal is CsI(Tl), the pmt R7400u. It is difficult to connect them because the pmt wires are very fragile and it is hard to find the right pmt socket. If it works you expect a resolution from around 7.2-7.5%@662KeV ...
by Zagros
08 Aug 2019, 05:27
Forum: Detectors
Topic: CSI Detector
Replies: 5
Views: 249

CSI Detector

Hello to all!
Anyone knows this detector?


https://rover.ebay.com/rover/0/0/0?mpre ... 4313963951

Thanks
by Zagros
11 Sep 2018, 06:00
Forum: Detectors
Topic: 2"x2" CsI(Tl) detector
Replies: 13
Views: 5365

Re: 2"x2" CsI(Tl) detector

Hello, Tom,
Can you post a spectrum of you background ?
Just curious..
by Zagros
03 Sep 2018, 05:41
Forum: Detectors
Topic: 2"x2" CsI(Tl) detector
Replies: 13
Views: 5365

Re: 2"x2" CsI(Tl) detector

luuk wrote:
15 Aug 2018, 03:50
I made a detector with a CsI(Tl) 2”x2” crystal.
The results are really good and it is very simple and easy to do.
If you interested please read the attachment.
Luuk
Hello luuk!
great work!
Do you have one more crystal?
Thank you
by Zagros
18 Nov 2017, 08:07
Forum: Spectrum
Topic: X ray of Ag and Nb
Replies: 11
Views: 4553

Re: X ray of Ag and Nb

Hello,
Anyone tried Xrf using a excitation beta source? (90-sr?)
by Zagros
07 Nov 2017, 08:52
Forum: Spectrum
Topic: Spectrum of Allanite-Ce
Replies: 7
Views: 2858

Re: Spectrum of Allanite-Ce

Hello,
The spectrum you obtained is typical from Thorium.
Is easy to find allanite samples associated to some Thorium minerals.
by Zagros
29 Sep 2017, 06:30
Forum: Detectors
Topic: FWHM question
Replies: 7
Views: 4939

Re: FWHM question

Hello Zagros, First, you have to remember that your resolution can only be calculated correctly is the linearity is correct. Therefore first thing to do is calibrate your system or at least check if it is linear, if not you cannot get have a realistic resolution calculation. Second you have to keep...
by Zagros
27 Sep 2017, 07:53
Forum: Detectors
Topic: FWHM question
Replies: 7
Views: 4939

FWHM question

hello, I have a question about the procedure for calculating probe's FWHM. I know the teorical calculation of FWHM and I suppose that softwares like Theremino and Atomspectra apply this method. The problem is that increasing the system voltage the FWHM decreases. So the question is : wich voltage is...
by Zagros
23 Jul 2017, 03:34
Forum: Detectors
Topic: Some CsI(Na) crystals for the group
Replies: 15
Views: 7157

Re: Some CsI(Na) crystals for the group

Hello!
I'd like to share my setup for testing the great Crystal received from Luuk!
Hope you enjoy!

Nicola
by Zagros
23 Jul 2017, 02:42
Forum: Introductions >> Start Here !
Topic: Hello from Parma, Italy
Replies: 1
Views: 1447

Hello from Parma, Italy

Hello to all,
my name is Nicola, I'm a geologist interested in minerals, rocks and all what's about radioactivity!
Great forum, hope to share something useful to all you.