Bose-Einstein condensate and ions spin

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Discussion Overview

The discussion revolves around the concept of spin in ions, particularly in the context of Bose-Einstein condensates (BEC). Participants explore the nature of spin, its implications, and the specific claim regarding the rotational speed of ions in a BEC.

Discussion Character

  • Exploratory, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant questions whether it is correct to say that ions in a BEC rotate at around 10^15 rpm, expressing uncertainty about the terminology.
  • Another participant responds by suggesting that the initial statement is likely incorrect, though they do not elaborate on why.
  • A question is raised about whether ions possess spin, with a follow-up suggesting that while ions might have spin, this does not imply they are physically spinning on an axis.
  • Participants discuss the nature of particle spin, indicating that it behaves as if it were spinning in certain respects, but not in others.
  • One participant seeks further information on the topic, indicating a desire for clarification.
  • A link to a Wikipedia article on spin in physics is provided as a resource for additional information.

Areas of Agreement / Disagreement

There is no consensus on the initial claim regarding the rotational speed of ions in a BEC, with one participant asserting it is incorrect while another questions the nature of spin itself. The discussion remains unresolved regarding the specifics of ion spin and its implications.

Contextual Notes

The discussion includes assumptions about terminology and the nature of spin that are not fully clarified. The relationship between particle spin and physical rotation is also not definitively established.

jumpjack
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Is it that correct to say that ions ina B-E condensate rotate at around 10^15 rpm? (don't know the exact english term for this, sorry).
 
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jumpjack said:
Is it that correct to say that ions ina B-E condensate rotate at around 10^15 rpm? (don't know the exact english term for this, sorry).

I have no idea what you are even asking about, but as written, I think it is safe to say that statement is incorrect.
 
does an ion have a spin?
 
jumpjack said:
does an ion have a spin?

It might. But having spin doesn't mean its spinning on its axis. Particle spin is only named that because it acts as if it were spinning on its axis in a few ways. (in other ways, it doesn't)
 
that's very cryptic, where could I find some info on this topic?
 

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