Search found 272 matches

by luuk
21 Jan 2021, 03:43
Forum: Detectors
Topic: Reflectors in scintillators
Replies: 10
Views: 153

Re: Reflectors in scintillators

Thanks for all the positive comment, really appreciated! Lukas if you are interested in detectors I have always several different model for sale ( send me a pm if you are interested) only not these refurbished ones, if I remember right I made a total of 9-12 detector and they were sold out even befo...
by luuk
20 Jan 2021, 03:14
Forum: Detectors
Topic: Reflectors in scintillators
Replies: 10
Views: 153

Re: Reflectors in scintillators

Ok guys here it is .
But please remember that this is a post from 2014 so the offer in the post is of course outdated and not valid any more.
It was posted on the Yahoo forum in 2014.
Have fun reading it.
Luuk
by luuk
19 Jan 2021, 08:03
Forum: Detectors
Topic: Reflectors in scintillators
Replies: 10
Views: 153

Re: Reflectors in scintillators

Hi Lukas,
About 7 years ago I wrote a post about about the refurbishing some a 63x63mm I did.
I don't think I posted it on this forum but only on the old yahoo forum.
It is almost a step by step manual to refurbish these detectors.
If interested I can post it here.
Luuk
by luuk
18 Jan 2021, 05:57
Forum: Detectors
Topic: Reflectors in scintillators
Replies: 10
Views: 153

Re: Reflectors in scintillators

Hi Lukas, I repaired many Russian detectors the magnesium oxide reflector is so compact because the detectors are 20-30 years old, the magnesium start to stick together and form a thick heavy layer, it is simply pressed by hand. I would advice to remove this powder reflector an simply use a ptfe(Tef...
by luuk
26 Dec 2020, 08:32
Forum: Detectors
Topic: Making your own plastic scintillators
Replies: 9
Views: 448

Re: Making your own plastic scintillators

Hi Lukas,
That is a very interesting project you have started there.
I would never even though of making my own scintillator, and for sure not going to
but still, nice to see that it can be done, great job!
Luuk
by luuk
16 Dec 2020, 03:50
Forum: Trading post
Topic: Mu-metal shields for diy detectors!
Replies: 5
Views: 3262

Re: Mu-metal shields for diy detectors!

Hi Ben,
Please send me a pm.
Luuk
by luuk
30 Nov 2020, 05:41
Forum: Spectrum
Topic: Calibrate the energy
Replies: 4
Views: 480

Re: Calibrate the energy

As far as I know this is the highest energy from standard/natural isotopes.
Luuk
by luuk
30 Nov 2020, 05:39
Forum: Detectors
Topic: Another LaBr3 detector
Replies: 7
Views: 451

Re: Another LaBr3 detector

The difference between an standard and a UBA cathode pmt is around 0.5%
Luuk
by luuk
20 Nov 2020, 18:27
Forum: Detectors
Topic: Building a LaBr3:Ce Gamma Spectrometer
Replies: 13
Views: 2459

Re: Building a LaBr3:Ce Gamma Spectrometer

SER: Single photon Electron Response.
Not really relevant for hobby use!
Luuk
by luuk
15 Nov 2020, 22:54
Forum: Detectors
Topic: Newly built detector with Hamamatsu R980 and 1.5 x 3.1 NaI(Tl)
Replies: 6
Views: 602

Re: Newly built detector with Hamamatsu R980 and 1.5 x 3.1 NaI(Tl)

Hi Andrey, That is a nice detector you build with great resolution but I have just one comment. You wrapped the pmt with black tape that is good but the first .5-1cm on the pmt on the cathode side should be wrapped with a Teflon tape(or other white reflector) The reason is that there is mostly alway...