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Germanium 68 calibration source missing from NJ

 

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So these are the drones you are looking for. Less than a Cat3 amount. Cat4 if the enclosure is still intact. Used to calibrate PET/CT scanners
 
Edited

He's really reaching to connect current drone sightings with those things from many years ago.? Sounds like paranoid weirdness / typical conspiratorial thinking making connections that don't exist.? Par for the course with many Americans lately, which is just embarrassing.
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-Chris
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From:[email protected] <[email protected]> on behalf of David71 via groups.io <dnix71@...>
Sent:?Tuesday, December 17, 2024 12:18 PM
To:[email protected] <[email protected]>
Subject:?[CDV700CLUB] Germanium 68 calibration source missing from NJ
?

So these are the drones you are looking for. Less than a Cat3 amount. Cat4 if the enclosure is still intact. Used to calibrate PET/CT scanners

?

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if true, what sort of detector could detect Ge68 at hundreds of feet away ?
P
 

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A mayor in New Jersey says that's what it is also. The drones are looking for cargo missing from the first of Dec.


The source went missing Dec 2, 2024. The feds could be looking for something else, but an expired source would make a dirty bomb.



On 12/17/2024 4:30 PM, C.R. via groups.io wrote:

He's really reaching to connect current drone sightings with those things from many years ago.? Sounds like paranoid weirdness / typical conspirational thinking making connections that don't exist.? Par for the course with many Americans lately, which is just embarrassing.

-Chris

From:?[email protected] <[email protected]> on behalf of David71 via groups.io <dnix71@...>
Sent:?Tuesday, December 17, 2024 12:18 PM
To:?[email protected] <[email protected]>
Subject:?[CDV700CLUB] Germanium 68 calibration source missing from NJ
?

So these are the drones you are looking for. Less than a Cat3 amount. Cat4 if the enclosure is still intact. Used to calibrate PET/CT scanners



Virus-free.

 

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What a mayor says does not convince me of much.? We have goofy mayors around here which have contributed largely to our drug and homeless problems.? They talk a lot but don't actually get anything meaningful done.? It is however possible they are testing out some drone based aerial scintillation probes in a grid-like pattern.? I suppose if they are doing that it may be for testing or training purposes.? If it's considered an active investigation then they may be keeping quiet about it so the suspect doesn't move his loot somewhere.? The whole thing makes no sense though.? It's like... Why bother stealing that?? Maybe they were hoping for something more spooky than what was actually inside.

-Chris

From:[email protected] <[email protected]> on behalf of David71 via groups.io <dnix71@...>
Sent:?Tuesday, December 17, 2024 3:29 PM
To:[email protected] <[email protected]>
Subject:?Re: [CDV700CLUB] Germanium 68 calibration source missing from NJ
?

A mayor in New Jersey says that's what it is also. The drones are looking for cargo missing from the first of Dec.


The source went missing Dec 2, 2024. The feds could be looking for something else, but an expired source would make a dirty bomb.



On 12/17/2024 4:30 PM, C.R. via groups.io wrote:
He's really reaching to connect current drone sightings with those things from many years ago.? Sounds like paranoid weirdness / typical conspirational thinking making connections that don't exist.? Par for the course with many Americans lately, which is just embarrassing.

-Chris

From:?[email protected] <[email protected]>?on behalf of David71 via groups.io <dnix71@...>
Sent:?Tuesday, December 17, 2024 12:18 PM
To:?[email protected] <[email protected]>
Subject:?[CDV700CLUB] Germanium 68 calibration source missing from NJ
?

So these are the drones you are looking for. Less than a Cat3 amount. Cat4 if the enclosure is still intact. Used to calibrate PET/CT scanners



Virus-free.

 

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I tend to agree, Chris.? ?The NRC report cites a 0.267 milliCurie Germanium-68 source, and that was probaly worst-case at the time the source was created.? If it was being "retired", the activity was likely much lower, perhaps only 10% of the original activity.? With a half-life of 271 days, after two years the activity would be down to about 7% of the original activity, or about 0.018 mCi, or 0.67 MBq. Considering that Ge-68 has no significant gamma emissions, and is only primarily an X-ray emitter, the chances of detecting it with a drone from several hundred meters away is infinitesimal.? However, Ge-68 decays to Gallium-68 which does have some low-yield gammas that might be detectable.? Considering the low activity (0.267 mCi, or 9.9 MBq), detection of the Ga-68 daughter is still unlikely with an airborne radiation detector.??

Even if the 0.267 mCi Ge-68 source was "re-purposed" in some type of dispersal device (a.k.a. "dirty bomb"), the impact would be trivial.? Ge-68 has a half-life of 261 days, so would decay relatively 'quickly' compared to something like 5.27 year Co-60 or 30-year Cs-137.

Ken -- WB?OCV

From: [email protected] <[email protected]> on behalf of C.R. via groups.io <nefarium@...>
Sent: Tuesday, December 17, 2024 1:30 PM
To: [email protected] <[email protected]>
Subject: Re: [CDV700CLUB] Germanium 68 calibration source missing from NJ
?
He's really reaching to connect current drone sightings with those things from many years ago.? Sounds like paranoid weirdness / typical conspirational thinking making connections that don't exist.? Par for the course with many Americans lately, which is just embarrassing.

-Chris

From:[email protected] <[email protected]> on behalf of David71 via groups.io <dnix71@...>
Sent:?Tuesday, December 17, 2024 12:18 PM
To:[email protected] <[email protected]>
Subject:?[CDV700CLUB] Germanium 68 calibration source missing from NJ
?

So these are the drones you are looking for. Less than a Cat3 amount. Cat4 if the enclosure is still intact. Used to calibrate PET/CT scanners



Virus-free.

 

On Wed, Dec 18, 2024 at 08:43 AM, Ken Sejkora wrote:
Considering that Ge-68 has no significant gamma emissions, and is only primarily an X-ray emitter
Keep in mind that gammas and X-rays differ only in their source (gamma from the nucleus, x-ray from the electron shells). Once departed from the atom, they are indistinguishable ...
I believe Ge-68 has a maximum energy of 100 KeV.
 

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Good Point, Charles.? Yes, I fully agree — gammas and X-rays are both photons, and once they are emitted from the atom both look and behave the same.? From the IAEA Isotope Browser app, Ge-68 has a maximum X-ray energy of 10.26 keV at 5.68%, and if you consider three other X-rays between 9.225 and 10.26 keV, the total X-ray emissions add up to 50.34%.? At these relatively low energies, these X-rays would be attenuated relatively quickly in the air, let alone by the thickness of the material enclosing the source, so would have limited detectability at a distance.? I found a reference from an accelerator lab that indicated that 10 keV x-rays are attenuated to ~0.57 (57%) of its initial intensity by 1-meter of air.? Thus, the attenuation through 5-meters of air would reduce the intensity to about 6% of the original intensity, and 10-meters of air would reduce the intensity to 0.36% of the original intensity.? Once you couple in the effects of the inverse square law for a point source, I think you'd be hard pressed to detect 10 keV x-ray photons from a Ge-68 poiont source much beyond 6 or 7 meters.

However, as I mentioned in the earlier email, Ge-68 decays to Ga-68 which has a 67.7 minute half-life, and would effectively be in equilibrium with the Ge-68.? The Ga-68 does emit some gammas, the most abundant of which is 1077.34 keV at 3.22%, and total gamma emissions above 578 keV add up to 3.58%.? Ga-68 decays by positron emission, so it will also produce 511 keV annihilation photons with a total yield of 178%, which would be the most likely photons detectable from a distance.?

Good topic of discussion.? Have a great day, Charles.? 73

Ken -- WB?OCV

From: [email protected] <[email protected]> on behalf of Charles, WB3JOK/0 via groups.io <charlesmorris800@...>
Sent: Wednesday, December 18, 2024 11:13 AM
To: [email protected] <[email protected]>
Subject: Re: [CDV700CLUB] Germanium 68 calibration source missing from NJ
?
On Wed, Dec 18, 2024 at 08:43 AM, Ken Sejkora wrote:
Considering that Ge-68 has no significant gamma emissions, and is only primarily an X-ray emitter
Keep in mind that gammas and X-rays differ only in their source (gamma from the nucleus, x-ray from the electron shells). Once departed from the atom, they are indistinguishable ...
I believe Ge-68 has a maximum energy of 100 KeV.

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