Gamma Spectrometry Forum

Hello guys. I recently integrated my meteo station with a pulse counter with a 30x70mm BGO crystal coupled to 50mm Hamamatsu r1306 The intention is to monitoring the background 24h/day. Now my question is How much lifespan I have to expect from the photomultiplier? The divider has,high resistance (8...

Thank you Luuk. I ll try.
I post a pic of the socket

hello Guys,
please help me identifying this detector: M30SHD2,5.
it seems a low energy naitl ,but which PMT is inside?
which divider should I use?
thanks

Few years ago I bought two of these Soviet-crystals:
very thin NaI(Tl) covered with beryllium window.
Sometimes they still appears on ebay.
They have some yellow spot but resolution is decent.
I made a good low energy probe, nice for xrf experiments.

Hi Luuk I ‘ve had no doubt you were the only guy that could gave me info.
3mm thickness : this is the reason I cannot obtain a spectrum of cs137!
The detector is working : it give good cps response also with weak sources.
But if the Crystal is so thin: what’ the center hole for?

The label reports:
Quartz& Silice Holland BV

Harshaw scintillation Crystal

12SF3M/1.1B-X3.

Hello I recently purchased this probe for few pounds on eBay:
[broken link removed - Steven]

Anyone can give me infos about it?
Thank you

Great probe Steve!
What’s the price of this crystal?

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 ...

Hello to all!
Anyone knows this detector?


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

Thanks