In reply to Bob Cook's message of Thu, 15 Oct 2015 23:45:39 -0700: Hi, My comment here below referred specifically to the Lundin - Lidgren paper, and was meant to explain why I put little faith in it. In short I see the absence of gammas in real life as strong evidence that the process they describe is not what actually happens.
>Robin and Eric-- > >You are correct based on data associated with two particle (nuclei and >neutron) absorption reactions. I agree that there will be prompt gammas >associated with most if not all neutron absorption reactions, since there is >no coupling to transfer energy from the new isotope to an assemblage of >other particles--a coherent system. > >However, it may be that a coherent system of Ni may absorb a neutron and >distribute the excess energy to many particles, including electrons, of >system. This has been my assumption for some time that the energy >coupling in the LENR reactions is via spin energy sharing within the >coherent system. The no-gamma experience has never made sense with the >transmutations and other ash seen in LENR. I would assume you would >consider that the transmutations did not occur without gammas. > >We differ in that I believe they have occurred without gammas. It's too >easy to measure gammas for so many experimenters to have missed them. > >Bob Cook > >-----Original Message----- >From: Bob Cook >Sent: Thursday, October 15, 2015 10:23 PM >To: vortex-l@eskimo.com >Subject: [Vo]:Re: Swedish scientists claim LENR explanation break-through > >In reply to Mixent: > >I disagree with your comment that every reaction is going to produce an >energetic gamma immediately. Most of the Ni isotopes that absorb a neutron >are stable or decay by a beta ray. I noted the radioactive Ni isotopes that >have a gamma in their decay mode. > >Li-7 goes to Li-8 and hence to Be-8 without any gamma. It ends up expelling >a beta and two alphas I believe. O-16 with a neutron goes to stable O-17 >and it goes to O-18 which is also stable. > >Bob Cook > >-----Original Message----- >From: mix...@bigpond.com >Sent: Thursday, October 15, 2015 9:36 PM >To: vortex-l@eskimo.com >Subject: Re: [Vo]:Re: Swedish scientists claim LENR explanation >break-through > >In reply to Bob Cook's message of Thu, 15 Oct 2015 21:26:22 -0700: >Hi, >[snip] > >It doesn't matter which element/isotope absorbs the neutron, or which >isotope it >creates. Every reaction is going to produce an energetic gamma immediately. >ALL >the excess energy from this process is going to be in the form of gammas, >and >most of them are going to escape the device, accomplishing two things:- >1) There will be very little left to provide heating to continue the >process. >2) The researchers will soon die of a severe radiation overdose. > > >>RE: [Vo]:Swedish scientists claim LENR explanation break-throughJones-- >> >>It was my conclusion reading the paper that the energy required to free a >>neutron from Li-7 produced a thermal neutron which could be readily >>absorbed by Ni-58. Note the paper does not address the use of other >>isotopes of Ni. Natural Ni would pose a radioactive hazard if it is >>sufficiently exposed to thermal neutrons. An assessment of the thermal >>neutron flux in a Ni nano particle, based on the estimated production of >>spalled neutrons would be a desirable side calculation. >> >>The paper makes note of the control of neutrons embodied within the Ni in >>order to prevent outside activationsee the 3rd paragraph on page 4. >> >>There are a number of isotopes that can capture a neutron and still remain >>stable. >> >> >> >> >> >>From: Jones Beene >>Sent: Thursday, October 15, 2015 12:48 PM >>To: vortex-l@eskimo.com >>Subject: RE: [Vo]:Swedish scientists claim LENR explanation break-through >> >>From: MarkI-ZeroPoint >> >>Ø >> >>Ø I posted a ref from physorg ... It involves a new observation about >>resonance which might tie in with the Swedes paper... >> >> >>Mark, No problem with the resonance. Its the neutrons that are the >>problem. >> >>What the Swedes should know, but apparently do not fully appreciate, is >>that neutrons simply cannot be involved as a modality in LENR, since there >>is no induced radioactivity. It is as simple as that. In fact, their theory >>is almost an embarrassment. >> >> >> >>Neutrons are insidious and difficult to contain. Even at the lowest energy >>(ultra-cold), neutrons will eventually activate almost everything they come >>in contact with. The good news would be this activation should serve as >>instant proof of LENR when it happens, but the bad news is that it never >>happens. >> >>Most of the mass of the Hot Cat is the element aluminum in the form of >>alumina ceramic. Neutron activation of aluminum occurs by numerous neutron >>capture reactions and the cross-section is substantial for thermal neutrons >>(few barns) and gets higher with colder neutrons. Such reactions as 27Al + >>n = 28Al, 27Al(n,a) 24Na, 27Al(n,2n)26Al and 27Al(n,p)27Mg show up at once. >> >> >>Even if by some miracle, only one neutron out of a million diffuses to the >>tube wall - these insidious little bastards would activate the alumina into >>a radioactive health hazard within minutes of excess heat showing up. The >>excited states following activation will undergo beta decay over protracted >>time periods and emit gammas as the nuclei de-excite to their respective >>ground states. Radioactivity would continue for months. >> >>Since this does not happen, we can be almost certain that neutrons are not >>involved in the Hot Cat operation. >Regards, > >Robin van Spaandonk > >http://rvanspaa.freehostia.com/project.html Regards, Robin van Spaandonk http://rvanspaa.freehostia.com/project.html
