@Axil
The gamma spectrum was monitored continuously during the GS3 tests,
covering the range ~80 KeV to over 1 MeV, and nothing above background
was seen. An animation of the 1-hour samples can be seen at:
https://drive.google.com/open?id=0BxxJkjesxe4kT3FOcmtkUnoydkk
A GC320+ geiger counter was also used throughout the test, and no
significant events were detected.
RF emission was checked occasionally with a loop antenna attached to a
100 MHz scope, and nothing above background was seen. A more formal test
in a Faraday cage with an RF spectrum analyzer would be needed to find
anything below ambient RF.
MFMP's resources are limited, and UV spectrographic measurement is not
possible with our budget. We would gratefully accept donations of
equipment for such testing. More casual measurement with a UV meter can
be done at reasonable cost, but that will not show the short-wavelength
UV I suspect is of interest to you. Typical UV spectrophotometers in the
$3-5k range only show down to 200 nm. Below that, extreme UV is absorbed
by oxygen in air and is very difficult to detect.
AlanG
On 7/29/2015 10:33 AM, Axil Axil wrote:
Have you done a spectroscopic analysis of all the radiation produced
by the reactor including x-rays, extreme ultraviolet(aka black light),
and RF radio frequencies?
On Wed, Jul 29, 2015 at 1:03 PM, AlanG <[email protected]
<mailto:[email protected]>> wrote:
@Jones
We tested the Aramco coating in our experiments at HUG in February
2015. It was moderately effective but was found to degrade over
time at 900°C. See the image at
https://drive.google.com/open?id=0BxxJkjesxe4kUUJubGlNaEZ1VVU
You can also see in that image the effect of long-term heating on
alumina-based cement, probably due to non-reversible phase change
in the crystal structure. I agree that these kinds of problems
make IR temperature measurement difficult, and I use it in
combination with thermocouples as a check measurement.
Regarding the possibility of UV secondary emission, alumina
appears to be opaque at such wavelengths. See the graph from
reference 4 in Bob Higgins paper: http://tinyurl.com/ltq8kvf
So to fit your hypothesis, any UV emission from quantum dots in a
GlowStick reactor would have to occur at the outer (cooler)
surface to add to the radiated energy. Otherwise the UV would
simply be thermalized in the bulk material.
AlanG / MFMP
On 7/27/2015 3:34 PM, Jones Beene wrote:
I wasn’t aware of“photon multiplication”as apotential
hindrancetoIRtesting(in the context ofthermometry)until recently,
butit is a hot topic inOptics journals these days. Was it even
mentioned wrt Lugano? Doubtit.For instance - with quantum dotsas
thereceptor, 7newvisiblephotons can be emitted from
everyUVphotonentering the dot.This would change the blackbody
curve of thethermalemittershould it also be a UV emitter.Does the
glow stick contain quantum dotsand doesthe gain involveUV?The
would greatly alter assumptions.
Much was made of thealumina emissivityproblem,but that is a
different subject than photon multiplication(whichrelates to
anotherunderlying assumption–that the thermal emitter is not
anintrinsic lightsource). Thus,
emissivityisdifferentfrommultiplication-and both can cause
errors.Bob Higgins revised thesuspected
Luganotemperaturedownto1100C,from the original1410C-based
onanemissivitycorrection, but if photon
multiplicationwashappeningat the same time,andtheE-Catisan
intrinsicUVemitter -there could beeven lessenergygainthan the
thermal calculation indicates.
The sad thing is that in both cases, the simple expedient of
aspecialtyblack coatingcouldsolve the problem.Surely MFMP are now
aware of the necessity ofsucha coating.Here is one of
manycompanieswhich provides them.
_http://www.aremco.com/high-emissivity-coatings/_
According to E-Cat World, a newglow-sticktest is underway.The
plan is to use a non-contactthermometry again, including anIR
thermometer rather than the thermocouple that was used with the
Padua test.Boththe IR thermometer and theOptris Pi 160will give
incorrect readingsifIRphotons aremultipliedin the range in which
they operate…unlesscoated.
Personally, I do not believe thatK-type thermocouples will be
accurateeither,so the black coating is a must.Type K may be used
up to 1260C in non-oxidizing or inert atmospheres.According
toexperts, inmarginally oxidizing atmosphere,such as coated
withaceramiccementand operating in air,the situation is
different. As low as800Cthe chromel wireof the pairwill start
tocorrode in a phenomenon known as "green rot".
Anyway, if it’s not too late – please paint the reactor with high
emissivity paint and use aplatinum thermocouple. Otherwise –
expect to hear the same complaints from skeptics as before.
