A much better test might be to add a more efficient 'crazy muon' receptor occluding perhaps half of the detector. Say a foil of silver or gadolinium. With such material the count rate might go up. How many cm away was the NaI from the source? Of course this presumes the signal can be reproduced at will.
-----Original Message----- From: Jones Beene [mailto:jone...@pacbell.net] Sent: Sunday, February 28, 2016 3:44 PM To: vortex-l@eskimo.com Subject: RE: [Vo]:Bremsstrahlung radiation -----Original Message----- From: H LV > In the Lugano test dosimeters were used to check for gamma/xray emissions at > more than 50 cm from the reactor... over the 32 day duration test it looks > like the dosimeters didn't record anything above background... If the MFMP > reactor resembles the Lugano reactor why didn't the dosimeters register any > radiation? I may sound like a broken record on this but it is fairly obvious: remove the lead bricks - the "apparent" radiation goes away. No lead at Lugano. The operative difference was the bricks. The lead captures muons which are documented by the adjoining scintillator as gamma radiation. Some of the muons are cosmic but some can be produced in the Holmlid effect. This can be easily tested next time around: remove the lead - the apparent radiation goes away. In a thesis which was referenced earlier on the known muon interaction with lead: "overall the study has demonstrated that effects such as neutron production in Pb shielding from muon interaction is an important effect in sensitive GRS experiments as the secondary/tertiary neutrons produced may interact with target nuclei to produce γ-ray events which could not be accounted for otherwise" https://webcache.googleusercontent.com/search?q=cache:OzhUEPLFX44J:https://researchbank.rmit.edu.au/eserv/rmit:161164/Turnbull.pdf+&cd=11&hl=en&ct=clnk&gl=us#87
