Hello! After playing with diodes to detect gamma rays, I finally ended with a photomultiplier, a Hamamatsu R1548 with E2037 socket. I will try to power it up...
Yesterday, I applied voltage to my PMT for first time. I wrapped it in cardbox and several layers of black insulating tape. I connected the anode to a 470k...
Miguel, congratulations on getting your PMT up and running. Your experience sounds a lot like my own a couple years ago - I just sat in the dark for about one...
In a message dated 7/7/2009 3:45:46 P.M. Central Standard Time, ea4eoz@... writes: I checked also my background for a time, and I could see some really...
... Yes, my final goal will be spectrometry, but I wan't to go step by step. I think my first step is to make a decent power supply. I'm using a circuit...
In a message dated 7/9/2009 7:12:54 A.M. Central Standard Time, ea4eoz@... writes: 1.- Apliying around 6 to 7 volts, I get around 600 volts output. Maybe...
... Don't be a bad man! English/american is not my every day language... ... Now you are back, another question to you all: Plastic scintillator BC-412 versus...
BGO is more sensitive because it is denser. Since it is denser, it will interact more with the radiation. ( more molecules to intercept). Neither is preferred...
There is someone on ebay putting up small BGO crystals. I was wondering how well it would work to butt these together end to end or side by side for use in a...
Yes, those are good crystals and BGO is sensitive without any moisture problems. That leads to BGO being very friendly towards home made probes. My suggestions...
... I noticed the plastic scitillator glows nicely blue under UV light, but the BGO does not glow at all... And yes, they are very dense. A single crystal...
each has its own advantages for sure. Plastic is FAST, it can record counts at an amazing rate, also it is more energy independent than the others. Light...
Hello again! These days I have been playing with the PMT and the plastic scintillator. I connected the PMT output to the computer sound card and I made some...
Miguel, I, too, have been wondering about this issue regarding the perpendicularity of sources to the detector scintillator material, though I can't say I've...
... It sounds me that someone posted about this in one of the groups, but I didn't found the message. The difference is very noticeable, from 5400 CPM placing...
Miguel, is it possible that the radium watch is glowing so much and releasing photons of its own, so many photons that they are actually causing your baseline...
Did you check if the source stimulate the pmt without passing trought the plastic? gamma they are similar to photons. may be the pmt react with them directly....
... And four days later I realized I didn't shield neither the PMT, neither the source against beta radiation, so my attempts to obtain some gamma spectrometry...
Miguel, being a newbie myself, I didn't know that you had to shield components from beta radiation. I would think that the glass of the PMT tube would block...
Have you read the basics in HomeRadLab? Geo ... From: "photonfunnel" <photonfunnel@...> To: <GeigerCounterEnthusiasts@yahoogroups.com> Sent: Saturday,...
Geo, no, I haven't read the basics in HomeRadLab. I looked over the Files, etc. for that group but I couldn't find what you're talking about. Where are the...
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