Bob, our solution to the cosmic spallation creating neutrons from lead was to move the lead far away… no lead no neutrons… I shared that story only to tell how easy it is to fuss about small signals… sometimes the signals are ‘relatively’ large for the instrument but meaninglessly tiny for you and I.
If one is making neutrons then there are neutron initiated gammas that one might need to watch out for. I found that having some neutron sensitive materials around like silver and gadolinium is a sure fire way to reveal neutrons with simple detectors. But there are almost certainly some strange emissions lurking in cold fusion/lenr that are not yet well understood, perhaps never having been described! From: Bob Higgins [mailto:[email protected]] Sent: Sunday, February 28, 2016 7:27 PM To: [email protected] Subject: Re: [Vo]:Bremsstrahlung radiation Do you have a reference on this? Otherwise, a lead cave would not be useful - it is there to protect the sensor from the cosmic rays. My understanding is that the cosmic rays produce the neutrons by spallation. If the neutrons are absorbed in the lead, they will likely cause isotopic shift which will lead to beta emission and then characteristic x-rays for lead at 78 keV. My plan is to follow the inside of the lead with 1/4" of Fe which will absorb all of the 78 keV but will produce the characteristic x-ray of Fe at 6 keV. Then there is the boric acid neutron absorber, and then the aluminum absorbs the 6 keV from the Fe, but gives off 1.5 keV Al characteristic x-ray in small amount. On Sun, Feb 28, 2016 at 7:58 PM, Jones Beene <[email protected] <mailto:[email protected]> > wrote: From: Bob Higgins * Jones, the moral of the story is that the large amount of lead (and it probably took a whole lot for the HPGe detector) converted some of the cosmic rays into a small neutron flux. Bob, as the thesis clearly states – the neutrons then are absorbed by the lead, causing the gamma radiation.
