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itsallgoodjames
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So yeah, I have no clue where to get these two elements in metallic form. Thanks in advance for the help.

edit - I've done a bit of research, apparently radium is a bit too radioactive to have a reasonably sized sample on my wall. I guess I'll just use some radium paint as my sample instead... I'm still looking for technetium though.

[Edited on 27-12-2020 by itsallgoodjames]

[Edited on 27-12-2020 by itsallgoodjames]

Nuclear physics is neat. It's a shame it's so regulated...

Now that I think about it, that's probably a good thing. Still annoying though.
j_sum1

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For Ra, I have a 1960s alarm clock. It still gliws, but only just. The ZnS is just about done for. I doubt you will be able to do much better than that.

For Tc, I would be more than satisfied with a labelled empty bottle of medical isotope. I have not been able to source one for myself. Again, I doubt most people would be able to do better than that. If you have contacts in the field, that might be what you settle for, or what you use in the interrim.
itsallgoodjames
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 Quote: Originally posted by j_sum1 For Ra, I have a 1960s alarm clock. It still gliws, but only just. The ZnS is just about done for. I doubt you will be able to do much better than that. For Tc, I would be more than satisfied with a labelled empty bottle of medical isotope. I have not been able to source one for myself. Again, I doubt most people would be able to do better than that. If you have contacts in the field, that might be what you settle for, or what you use in the interrim.

For the technetium, NovaElements sells a sample, but it's $1000 for a quantity measured in micrograms. According to google, technetium is a large component of nuclear waste, so it's interesting that it's so expensive. I guess it's a supply and demand issue. No one is buying it, so no one is selling it. Unfortunate really. For the radium, I'm sure I can get some old broken watches and (extremely carefully) remove the paint with a solvent. then I can add some new zinc sulfide doped with copper, so it can glow nice and brightly in the container. My logic is if I can't have elemental radium, I might as well have a nice glowing sample. edit - I should clarify, I'm unwilling to spend$1000 on a single sample for my collection. that's twice my budget for the entire table, so I'm looking for a different way.

[Edited on 27-12-2020 by itsallgoodjames]

Nuclear physics is neat. It's a shame it's so regulated...

Now that I think about it, that's probably a good thing. Still annoying though.
itsallgoodjames
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For Ra: I've aquired 6 broken radium watches, and plan to remove the radium paint, and mix it with a phosphor in the near future. Pre-prepared ZnS doped with copper seems to be hard to find, which is rather surprising, and I'm not super comfortable working with large amounts of H2S. Would europium based phosphor work as a replacement, as that seems to be much easier to find?

For Tc: So I was doing a bit of research, and found that natural molybdenum consists of approximately 25% molybdenum 98, and most of the remainder is lighter isotopes. Knowing this, would it be possible to irradiate molybdenum with neutron radiation, turning it into Mo 99, then the molybdenum decays into technetium? The technetium can then be chemically extracted in a yet to be determined way. Does this shound like something that would be practical, or am I just grasping at straws?

Nuclear physics is neat. It's a shame it's so regulated...

Now that I think about it, that's probably a good thing. Still annoying though.
unionised
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 Quote: Originally posted by itsallgoodjames Knowing this, would it be possible to irradiate molybdenum with neutron radiation, turning it into Mo 99, then the molybdenum decays into technetium? The technetium can then be chemically extracted in a yet to be determined way. Does this shound like something that would be practical, or am I just grasping at straws?

Do you have a nuclear reactor?
phlogiston
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It's possible, but if you were able to do it, you would be asking different questions.

Perhaps another option to obtain an actual (but non-visible amount) of technetium is to collect the urine from someone that was administered tc-99m in a hospital. If you work quickly, you can maybe even purify it to some extent, before it has all decayed to tc-99, at which point it probably becomes undetectable.

[Edited on 28-12-2020 by phlogiston]

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 Sciencemadness Discussion Board » Special topics » Radiochemistry » Sourcing of metallic technetium and radium in Canada 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