In a 1964 publication Bruno Rossi describes an experiment where cosmic rays could penetrate dense materials. Finding that cosmic radiation at sea level could penetrate over 1m of lead. In these same experiments he was also surprised to record a higher rate of detection, as many as 35 per hour as...
Thank for the tips I have some uv lamps I'll give it a try, make a good blog. Tonic and cosmic rays.:cool:
I guess I could custom make up some brass boxes to enclose the scintillators, I have some brass sheet in the workshop.
Regards
Robert
That is an excellent explanation why I need larger scintillators.
Does quinine sulphate diluted in distilled water work as a scintillator how many parts per ml?
Or do you need the sugar in tonic :smile:
No not at all :smile: Its very interesting nonetheless. but I was going to wrap...
Thank you I really appreciate the feedback. The sizes of scintillator are not through choice, it is what I can scrounge from here an there, I would buy larger panels if I could find a supplier.
Nevertheless I'm still in an experimentation phase, so this will help me better understand what...
Here is a rough sketch of what the detector may look like, working with what I have available.
The http://www.hardhack.org.au/files/BC412.pdf" block measure 89mm x 89mm x 38mm and respond to an energy between 100 KEV to 5 MEV and emits light between 420nM and 450nM
The scintillator...
Excellent feedback! I had similar thoughts, but not having the education background in this area, my knowledge is limited to what I can read or google.
We are very much the amateur tinkerer :-)
My main issue to-date has not been the photomultiplier tubes (thanks ebay), electronics, HV...
I'm currently in the process of building a new muon detector using PMTs and Scintillators http://www.hardhack.org.au/scintillator_detector for testing the validity of my other cheaper detector projects.
But I was also thinking of building another detector for logging average Cosmic Ray levels...
I'm now looking into improving the RFI electronics between each of the detector amplifiers and the tolerances of pulse forming.
I tried adding shielding, at first with 25mm of Copper and then 6mm Lead between each GM tube and observed no difference, I also tried some other GM tubes and can't...
This is very helpful feedback thank you, yes indeed these are broadside GM tubes thin walled beta/gamma sensitive, I chose them for their larger surface area.
I had no idea about a GM tubes producing a recoil gamma ray. Compton scattering sounds very interesting. I will definitely try you...
I have been trying to build a low cost muon detector using Geiger Muller Tubes - http://www.hardhack.org.au/geiger_muller_detector" so that others can build too.
However although the finished results look good enough, I'm not sure its conclusively detecting Mouns...