Re: [Vo]:The Purcell Effect

[Axil Axil]

yes  Simakin 



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   https://physicsworld.com/a/do-solar-neutrinos-affect-nuclear-decay-on-earth/


   Do solar neutrinos affect nuclear decay on Earth?


   Neutrinos are away left handed particles.


   http://hyperphysics.phy-astr.gsu.edu/hbase/Particles/neutrino3.html

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   - Accelerated alpha-decay of 232U isotope achieved by exposure of its
   aqueous solution with gold nanoparticles to laser radiation
   
   A.V. Simakin,  G.A.
   Shafeev 
   Dec 30 2011 physics.gen-ph 
   arXiv:1112.6276v1
   Scite!
   0 

PDF 
   Experimental results are presented on laser-induced accelerated
   alpha-decay of Uranium-232 nuclei under laser exposure of Au nanoparticles
   in aqueous solutions of its salt. It is demonstrated that the decrease of
   alpha-activity strongly depends on the peak intensity of the laser
   radiation in the liquid and is highest at several terawatt per square
   centimeter. The decrease of alpha-activity of the exposed solutions is
   accompanied by the deviation of gamma-activities of daughter nuclides of
   Uranium-232 from their equilibrium values. Possible mechanisms of the laser
   influence on the alpha-activity are discussed on the basis of the
   amplification of the electric field of laser wave on metallic nanoparticles.
   - Deviation from secular equilibrium
   
   A.V. Simakin,  G.A.
   Shafeev 
   Jan 21 2010 physics.gen-ph 
   nucl-ex  arXiv:1001.3574v1
   Scite!
   0 

PDF 
   Laser exposure of gold nanoparticles in aqueous solutions of Uranium
   salt leads to accelerated decay of U238 nuclei and significant deviation
   from secular equilibrium. The samples demonstrate the enhanced gamma
   emission in the range of 54 keV during laser exposure.
   - Initiation of nuclear reactions under laser irradiation of Au
   nanoparticles in the aqueous solution of Uranium salt
   
   A.V. Simakin,  G.A.
   Shafeev 
   Dec 01 2009 physics.gen-ph 
   nucl-ex  arXiv:0911.5495v1
   Scite!
   0 

PDF 
   Laser exposure of suspension of either gold or palladium nanoparticles
   in aqueous solutions of UO2Cl2 of natural isotope abundance was
   experimentally studied. Picosecond Nd:YAG lasers at peak power from 1011 to
   1013 W/cm2 at the wavelength of 1064 and 355 nm were used as well as a
   visible-range Cu vapor laser at peak power of 1010 W/cm2. The composition
   of colloidal solutions before and after laser exposure was analyzed using
   atomic absorption and gamma spectroscopy between 0.06 and 1 MeV range of
   photon energy. A real-time gamma-spectroscopy was used to characterize the
   kinetics of nuclear reactions during laser exposure. It was found that
   laser exposure initiated nuclear reactions involving both 238U and 235U
   nuclei via different channels in H2O and D2O. The influence of saturation
   of both the liquid and nanoparticles by gaseous H2 and D2 on the kinetics
   of nuclear transformations was found. Possible mechanisms of observed
   processes are discussed.
   - Initiation of nuclear reactions under laser irradiation of Au
   nanoparticles in the presence of Thorium aqua-ions
   
   A.V. Simakin,  G.A.
   Shafeev 
   Jun 24 2009 physics.gen-ph 
   nucl-ex  arXiv:0906.4268v1
   Scite!
   0 

PDF 
   Initiation of nuclear reactions in Thorium nuclei is experimentally
   studied under laser exposure of Au nanoparticles suspended in the aqueous
   solution of Th(NO3)4 (232Th). It is found that the reaction pathway depends
   in which water, either H2O or D2O, the laser exposure is carried out.
   Saturation of the liquids (H2O or D2O) with gaseous H2 or D2, respectively,
   enhances the nuclear reactions under laser exposure allowing their
   excitation at peak intensity as low as 1010 W/cm2. Enhanced gamma-activity
  

RE: [Vo]:The Purcell Effect

[JonesBeene]

From: Eric Walker

I'm curious whether any of those replications have been outside of the LENR 
field.

Eric

Several years ago, not long after the P announcement - this was a hot topic 
on various forums. I participated in one replication attempt, since at the time 
I had a working Tesla coil (Ouidin coil)  setup which was an ideal vehicle to 
demonstrate the effect as it is more of a bipolar resonator giving a large 
swing in alternating HV potential across a sample. 

We were able to show two orders of magnitude increase in the rate at which 
pitchblende decayed … but that rate gain attenuated after several days. This 
generated some interest at Cal (Berkeley). 

The PhDs who ostensibly tried a replication experiment of the Barker patent 
(for unknown reasons)  proceeded with a setup which was completely inadequate 
and (as expected) showed a null result. This null result squelched any further 
interest in our funders. 

Sadly the geniuses at Cal missed two  important details – which are that the 
effect works best (or only) on minerals (especially oxides of U and Th) and 
almost never works on a pure metal isotope like Californium IIRC  and second 
that the electric field must be arranged to have an extreme variation - such 
that the sample sees alternating voltage polarity over its surface and not a 
purely static field. As I recall, the details are explained in the patent. 
Researchers often hate to work with minerals since there is so much variability 
in composition... but still…

An effect which is stated not to work with metals is doomed from the start - if 
you use a metal. Anyway – everyone seemed to move to LENR after this and it was 
mostly forgotten.

The main reason that even a large increase in the decay rate of a mineral like 
pitchblende cannot be easily commercialized is that even at a factor of 100 
improvement, the half-life may drop from several billion years to several tens 
of million years, but still far from breakeven, considering the power put into 
the HV input. Even so, it is probably something that should have been continued.

I see the assignee is Altran Corporation which may still have an interest but 
it may not be the well-known Altran.

Jones

Re: [Vo]:The Purcell Effect

[Eric Walker]

On Fri, Mar 30, 2018 at 7:58 PM, Axil Axil  wrote:

Two so far.
>

Perhaps you're referring in part to the Simakin and Shafeev paper, which
you've called attention to before?

https://arxiv.org/abs/0906.4268

This paper, of course, deals with laser irradiation, while the Barker
patent discusses application of a high voltage using a Van de Graaff
generator.  What are the two replications you're thinking of?

Eric

Re: [Vo]:The Purcell Effect

[Axil Axil]

Two so far.

On Fri, Mar 30, 2018 at 8:28 PM, Eric Walker  wrote:

> Jones,
>
> On Sun, Mar 25, 2018 at 4:30 PM, JonesBeene  wrote:
>
>
>> There is also the Barker effect.
>>
>>
>>
>> This is an altered radioactive decay rate due to high static voltage.
>>
>>
>>
>> The patent is here. It has been widely replicated but has found no
>> commercial niche.
>>
>>
> I'm curious whether any of those replications have been outside of the
> LENR field.
>
> Eric
>
>

Re: [Vo]:The Purcell Effect

[Eric Walker]

Jones,

On Sun, Mar 25, 2018 at 4:30 PM, JonesBeene  wrote:


> There is also the Barker effect.
>
>
>
> This is an altered radioactive decay rate due to high static voltage.
>
>
>
> The patent is here. It has been widely replicated but has found no
> commercial niche.
>
>
I'm curious whether any of those replications have been outside of the LENR
field.

Eric

[Vo]:The NRU is shutting down for good.

[H LV]

A relic of Canada's atom age, the NRU reactor is shutting down for good

Chalk River is taking nuclear research in new directions. Anyone in the
market for a portable reactor?



On March 31, a little-known part of Canada's nuclear history will go dark
for the last time.

The National Research Universal Reactor — or NRU — at Chalk River, Ontario
will be turned off for good Saturday evening. It first came online in 1957.

Retired Atomic Energy of Canada Limited engineer Fred Blackstein was there
almost from the start. He got his first job in the lab when he was just 19
years old.

"I sort of think I grew up here. I hope I grew up," he said.

Blackstein would go on to work in a number of jobs at the reactor, from
1961 to 1985. He said that during those decades, Chalk River was the "place
to be if you were a scientist anywhere in the free world."
​​

​
continues here​:

http://www.cbc.ca/news/politics/a-relic-of-canada-s-atom-age-the-nru-reactor-is-shutting-down-for-good-1.4595836