Elemental half-life: novel idea?

  • Context: Undergrad 
  • Thread starter Thread starter zforgetaboutit
  • Start date Start date
  • Tags Tags
    Half-life Idea Novel
Click For Summary

Discussion Overview

The discussion revolves around the concept of solid elements that radioactively decay into gases, exploring both natural and synthetic candidates. Participants consider the implications of such decay processes, including visual observations and safety concerns.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant wonders about the existence of solid elements that decay into gases, envisioning a visual transformation as the solid becomes less dense.
  • Another notes that many radioactive elements decay into radon gas at some point, but also into various other substances through different decay mechanisms.
  • A participant mentions radium as an example but cautions against observing such decay due to safety concerns related to high radiation levels from short-lived isotopes.
  • Another suggests that finding a solid element next to a gas on the periodic table and identifying an appropriate isotope for beta or alpha decay could yield candidates, but obtaining such elements poses significant challenges.

Areas of Agreement / Disagreement

Participants express varying levels of interest and concern regarding the feasibility and safety of observing radioactive decay in solid elements, indicating that multiple competing views remain on the topic.

Contextual Notes

The discussion highlights limitations related to the availability of suitable isotopes, the safety of handling radioactive materials, and the potential for long half-lives in naturally occurring elements.

zforgetaboutit
Messages
45
Reaction score
0
I was wondering if there were any known solid elements, natural or synthetic, which radioactively decay into a gas.

It would be cool to watch a block of it become more and more sponge-like, and therefore less dense, as it decayed - structurally crumbling until finally no solid could be observed with the naked eye.

Quick, somebody give me a dry ice Meccano Erector set.
 
Physics news on Phys.org
Quite a lot of radioactive elements decay into radon gas as some point on their way down to stability.

However, these same elements also decay via a lot of other mechanisms into a variety of other substances, not just radon.

- Warren
 
Radium is one such. However, I would not advise sitting and watching a solid lump of a radioactive material "dissolve" as a hobby. Any thing with a short enough half life that you could actually SEE something happen would be so "hot" you probably wouldn't live to give us a report on it!
 
All you have to do is find an element that's a solid that's next to a gas on the periodic table, and then find an isotope that undergoes the appropriate beta decay. Or two steps away, and alpha decay (gas being lighter). There have to be hundreds of candidates. Obtaining one of them is the big obstacle. If it's naturally occurring, chances are the half-life is reeeaaally long, so it's not going to put on much of a show. If the half-life is short enough to see this happen, then it'll be tough to get macroscopic amounts, and it'll have a big activity.
 

Similar threads

  • · Replies 20 ·
Replies
20
Views
3K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 6 ·
Replies
6
Views
11K
  • · Replies 2 ·
Replies
2
Views
2K
Replies
3
Views
2K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 4 ·
Replies
4
Views
4K