Protactinium 234m Generator - nuclear chemistry

Original paper extraction of Pa-231

DIN ISO 2919
DIN EN ISO 2919 (VDE 0412-2919):2015-03. (o. J.). 14. August 2024, from

core curriculum Physics Sekundarstufe II NRW:
Ministerium für Schule und Weiterbildung des Landes Nordrhein-Westfalen Kernlehrplan Physik. 2014. Düsseldorf

Permitted handling without authorization under §5 of the Radiation Protection Ordinance (StrlSchV)

Activities requiring authorization under §12 of the Radiation Protection Act (StrlSchG)

Regulation authorizations under §24 of the Radiation Protection Act (StrlSchG)

Anlage 4 exemption limit for radionuclides

special qualification S7.1 SSB

0:00 Hallo :)
0:23 rough overview
1:20 building the generator
2:31 experiment
3:18 Excel
4:42 nuclear physics background
7:44 chemical background
10:04 more information
12:30 Bye :)

#radioactivity #chemistry #experiment #Protactinium #uranium

[KarbineKyle]

Very nice! I live in the USA, and I made one myself, since they're not available here. It works great! I used over twice as much uranyl nitrate (U-238), and it's amazing how accurate it is! I almost always get a 77 second half-life! I used 36% HCl acid and MIBK. I sealed it in a 60 mL polypropylene bottle. I get about 4000 CPM (max), with my SEI Inspector USB Geiger-Müller counter, which uses the LND 7317 G-M tube. It's really accurate for how crude it is! Thank you for sharing and keep up the great work! Cheers from the USA!

[Diamonddavej]

I think my college had a similar decay rate demo, but based on short-lived 220Rn from thorium (55.6 sec half life). It is a long time ago, but what I remember is it consisted of a bag of thorium sand connected to a jar via plastic tube with plunger, that transferred radon gas into a jar. I think, or assume, it had an open end about the size diameter of a G-M tube (since it had to detect Alphas).

[FullModernAlchemist]

I was wondering what you were up to with the aldehyde stuff we were chatting about. Very cool! ❤

[LFTRnow]

I once saw in an old science book the idea of using an old PC or laptop fan to blow air into a tight filter. Any particles in the air get trapped in the filter, and invariably, several are radioactive. The activity increases until equilibrium, and you can then turn off the fan and watch it decay down again. The typical catch is from decay products of radon 222, of which is Po-218. Since it decays with 3 minute half-life it is easy to watch the rate decay over a comparatively short period. If anyone ever builds this, I'd love to see the vid.

[jonmarquez]

Uranyl nitrate and Urynal Salts have small amounts of Protactium in it.

[edbertelison]

shesshhh that's a cool experiment

[Auroral_Anomaly]

Nuclear Isomers are weird, they kind of disprove the fluid drop model of nuclei because if it was a fluid drop the charge and nucleons would be evenly distributed.

[brfisher]

I wonder how easily would this work with the RadiaCode given that ²³⁴ᵐPa emits gamma ray photons with energies of 766 keV and 1, 001 keV as you are fully aware of.