Beta Decay of 32 Phosphorus - Is It Positively Charged?

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Discussion Overview

The discussion revolves around the beta decay of 32 phosphorus and the implications for the charge state of the resulting sulfur atom and the surrounding material. Participants explore whether the atom remains positively charged after decay and the conditions under which it may capture additional electrons or ionize its surroundings.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • One participant questions whether the atom remains positively charged after beta decay, suggesting it may ionize its surroundings or capture an additional electron.
  • Another participant humorously implies that the atom cannot remain positively charged indefinitely.
  • A participant proposes a scenario where a crystal of 32 phosphorus in a vacuum tube could become positively charged after several decays, raising questions about the duration of this charge state.
  • It is suggested that the crystal would remain positively charged until it captures an electron, which typically occurs quickly in ordinary materials.
  • A later reply indicates that in a vacuum, the crystal could attract emitted electrons back before they reach the walls, potentially neutralizing the sulfur ions produced by decay.

Areas of Agreement / Disagreement

Participants express differing views on the duration of the positive charge state and the conditions affecting electron capture, indicating that multiple competing perspectives remain unresolved.

Contextual Notes

The discussion includes assumptions about the behavior of materials in vacuum conditions and the dynamics of electron capture, which are not fully explored or resolved.

beta man
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Hi all,

when an atom goes through a beta decay, say 32 phosphorus. The final state is then 16 protons, 16 neutrons, and 15 electrons. This seems to be an ion of sulfur.

My question is, does the atom remain in a positively charged state? or does it ionize it suuroundings and captures an additional electron?

Best

Beta man
 
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beta man said:
My question is, does the atom remain in a positively charged state?

For all eternity? No.
 
So for how long?

In principle if I have a crystal of 32 phsophor in a large vacuum tube, with walls that can only absorb electrons. Then after few atom decays into sulfur the crystal will become positivly charge.

Will it stay like this for infinite time? since there is no gas to ionize.

Will this inhibit the decay of all the crystal?



Beta man
 
It stays that way until it finds an electron to capture. In ordinary materials, that happens quickly.
 
beta man said:
In principle if I have a crystal of 32 phsophor in a large vacuum tube, with walls that can only absorb electrons. Then after few atom decays into sulfur the crystal will become positivly charge.

Will it stay like this for infinite time?

Eventually the crystal gains enough net positive charge that it can attract the emitted electrons back before they reach the walls of the tube. These electrons combine with (some of) the sulfur ions produced by the decay, to yield neutral sulfur atoms.
 

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