Sciencemadness Discussion Board » Special topics » Radiochemistry » Radioisotope Identification Select A Forum Fundamentals   » Chemistry in General   » Organic Chemistry   » Reagents and Apparatus Acquisition   » Beginnings   » Responsible Practices   » Miscellaneous   » The Wiki Special topics   » Technochemistry   » Energetic Materials   » Biochemistry   » Radiochemistry   » Computational Models and Techniques   » Prepublication Non-chemistry   » Forum Matters   » Legal and Societal Issues

 Poll: Radioisotope Identification get a life 5 (9.26%) maybe one day 28 (51.85%) absolutely 11 (20.37%) call 911 10 (18.52%)

Pages:  1  ..  3    5
neptunium
International Hazard

Posts: 974
Registered: 12-12-2011
Location: between Uranium and Plutonium
Member Is Offline

This one also needs a pre amplifier ...I hate seing good equipment go to waste though..

IrC
International Hazard

Posts: 2710
Registered: 7-3-2005
Location: Eureka
Member Is Offline

Mood: Discovering

So do I, and I kept this in hopes of one day using it but never looked into it due to other things always taking up my time. Not until I started looking at your posts did I dig it out of storage and look into it. Even a good used preamp is around a thousand and then I need an MCA and so on. Too much for a hobby unless I win the lottery.

Got any good numbers I can try?

"Science is the belief in the ignorance of the experts" Richard Feynman
neptunium
International Hazard

Posts: 974
Registered: 12-12-2011
Location: between Uranium and Plutonium
Member Is Offline

Ha!! Yeah sure let me try if i hit it first!

Texium
6-1-2016 at 19:53
IrC
International Hazard

Posts: 2710
Registered: 7-3-2005
Location: Eureka
Member Is Offline

Mood: Discovering

Don't know if you have looked into the following links before. If not then maybe it is something interesting to study while waiting for those numbers.

http://www.theremino.com/technical/schematics

http://www.theremino.com/blog/gamma-spectrometry

"Science is the belief in the ignorance of the experts" Richard Feynman
Velzee
National Hazard

Posts: 379
Registered: 19-8-2015
Location: New York
Member Is Offline

Mood: Taking it easy

So, fifteen bucks, huh?

"All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident."
—Arthur Schopenhauer

"¡Vivá Cristo Rey!"
—Saint José Sánchez del Río
neptunium
International Hazard

Posts: 974
Registered: 12-12-2011
Location: between Uranium and Plutonium
Member Is Offline

Naw don't worry about the charge

neptunium
International Hazard

Posts: 974
Registered: 12-12-2011
Location: between Uranium and Plutonium
Member Is Offline

Velzee send me his sample for a look at the gamma spectrum,
Ive received it today and after a quick look it seem to be a weak uranium ore named coffinite.
I placed it in the spectrometer and obtained this very classic spectrum for Uranium with some Thorium isotopes a little over 10 minutes of acquisition (633sec) gives a rate of 120c/s so given its geometry maybe a bit less than 300bq which is consistent with a similar size sample of coffinite I analyzed earlier.

Ac228 is a daughter of Thorium 232 but is a lot more active than other isotopes from natural U238 and shows up better with a gamma spectrometer like the one I use.
It is easy to see the comparison with a known sample of Uranium ore (coffinite) their is no mistake.

Although Velzee's sample might contain a little more Thorium .

If you have such samples in your backyard I would start digging immediately! there is some money to be made the Uranium ore samples sale pretty good on ebay!

chemrox
International Hazard

Posts: 2953
Registered: 18-1-2007
Location: UTM
Member Is Offline

Mood: LaGrangian

The US west coast is being hit with isotopes from Fukushima. This is a potential concern for milk producers; Sr 90 for example. I would like to help those producers who are diligent enough and share the concerns of their customers. Not all of them are. Witness the past reactions to hormone issues. The ones that give a shit should be rewarded. I live and play near the coastal town of Tillamook. Nice airport.. good mushrooms.. Tillamook is a major producer of dairy products. Consider collaborating with me on environmental services to the producers and cow farmers. And/or we could focus on the customers. I know a health food seller that might be convinced to test hi products for rads. I would like to get beyond gamma counting and be able to say what and how much. Then we could develop health care reports. We should explore whether there are certifications we could qualify for and advertise.

"When you let the dumbasses vote you end up with populism followed by autocracy and getting back is a bitch." Plato (sort of)
j_sum1

Posts: 5664
Registered: 4-10-2014
Location: Unmoved
Member Is Offline

Mood: juggling juggling juggling

Good thinking chemrox.

neptunium
International Hazard

Posts: 974
Registered: 12-12-2011
Location: between Uranium and Plutonium
Member Is Offline

Chemrox if you reside in the west coast and have such sample with a noticeable activity .may I suggest sending me one for gamma spectrum?
If I may I don't believe the Fukushima disaster has much of an impact on anything a few hot spots here and there are hardly cause for alarm. Besides, radiological survey are conducted dayli by many different government and independent lab. If anything hit the fan trust that someone somewhere will ring the bell much like the Flint water pollution. It may take a while but after 5 years still nothing....

neptunium
International Hazard

Posts: 974
Registered: 12-12-2011
Location: between Uranium and Plutonium
Member Is Offline

 Quote: Originally posted by chemrox The US west coast is being hit with isotopes from Fukushima. This is a potential concern for milk producers; Sr 90 for example. I would like to help those producers who are diligent enough and share the concerns of their customers. Not all of them are. Witness the past reactions to hormone issues. The ones that give a shit should be rewarded. I live and play near the coastal town of Tillamook. Nice airport.. good mushrooms.. Tillamook is a major producer of dairy products. Consider collaborating with me on environmental services to the producers and cow farmers. And/or we could focus on the customers. I know a health food seller that might be convinced to test hi products for rads. I would like to get beyond gamma counting and be able to say what and how much. Then we could develop health care reports. We should explore whether there are certifications we could qualify for and advertise.

sounds good to me ! i can only detect gamma and x rays but i have been looking into fixing an alpha spectrometer. The sample prep is a bit tricky though.
Also for Sr90 a beta scintillation spectrometer is necessary. i do not have one ...yet... but i would gladly accept money to set one up . Ive always wanted to do carbon dating...
As for most of us here time and money are badly needed!

neptunium
International Hazard

Posts: 974
Registered: 12-12-2011
Location: between Uranium and Plutonium
Member Is Offline

neptunium
International Hazard

Posts: 974
Registered: 12-12-2011
Location: between Uranium and Plutonium
Member Is Offline

Oh boy its been a while ! not much happened here I see...
Well i got around to analyze some Trinitite and rather than start a lengthy post i rather share my findings on a video...
enjoy!

[Edited on 7-8-2019 by neptunium]

Fluorite
Hazard to Others

Posts: 125
Registered: 26-12-2018
Location: Tunisia
Member Is Offline

Mood: happy

WOa I think detecting elements is amazing! this is so helpful like you can know if 0% Cd Hg battery has any Cd Hg or you can also detect mercury in Tuna! Cody's lab did a vid
neptunium
International Hazard

Posts: 974
Registered: 12-12-2011
Location: between Uranium and Plutonium
Member Is Offline

been working on more videos i hope youll enjoy some of my new equipment,
I have to apologize for my absence for so long...
I dont see much activity on here since i last commented so it looks like i have not missed much ..
Fluorite here is an improvement on the low level mercury in tuna i made ... yes its almost 2 years old now sorry.

pantone159
International Hazard

Posts: 567
Registered: 27-6-2006
Location: Austin, TX, USA
Member Is Online

Awesome, I just watched the trinitite video. I want to get a gamma spectrometer someday but I haven't managed yet. I liked the suggestion by one commenter to use single pieces for analysis so the composition is more consistent. But actually dating the event experimentally would be cool. Maybe individual pieces would give a better date. Is there any possibility of detecting 96-Cm or higher? That would be extra cool as those elements are not very collectible.
neptunium
International Hazard

Posts: 974
Registered: 12-12-2011
Location: between Uranium and Plutonium
Member Is Offline

Unfortunately I no longer work in this lab. But I have my own mass spec now
and part 2
and the lab i work at has the newest of the newest .. the 5000...which i recently check to mass 250 and i dont see why i could not get it a bit higher.

chemrox
International Hazard

Posts: 2953
Registered: 18-1-2007
Location: UTM
Member Is Offline

Mood: LaGrangian

I need equipment capable of assessing fallout from Fukishima hitting the west coast of the US. Cheap is good. I'm looking for low concentrations of ?

"When you let the dumbasses vote you end up with populism followed by autocracy and getting back is a bitch." Plato (sort of)
neptunium
International Hazard

Posts: 974
Registered: 12-12-2011
Location: between Uranium and Plutonium
Member Is Offline

 Quote: Originally posted by chemrox I need equipment capable of assessing fallout from Fukishima hitting the west coast of the US. Cheap is good. I'm looking for low concentrations of ?

Cesium 137. peak at 662Kev but you won`t find much. maybe a fraction of becquerel and THAT requires expensive equipment .
Sr90 perhaps but about half is already gone and a different type of equipment (also not cheap) is needed. Either one, to be honest, after 11 years of weather and radiological decay, If you find anything, that would be a fluke, incredible luck, vastly expensive project, an error, or a lie.
Just my opinion but of course i could be totally wrong

[Edited on 25-1-2022 by neptunium]
Pages:  1  ..  3    5

 Sciencemadness Discussion Board » Special topics » Radiochemistry » Radioisotope Identification Select A Forum Fundamentals   » Chemistry in General   » Organic Chemistry   » Reagents and Apparatus Acquisition   » Beginnings   » Responsible Practices   » Miscellaneous   » The Wiki Special topics   » Technochemistry   » Energetic Materials   » Biochemistry   » Radiochemistry   » Computational Models and Techniques   » Prepublication Non-chemistry   » Forum Matters   » Legal and Societal Issues