Talk:Evaporative cooling (atomic physics)

For a January 2004 deletion debate over this page see Votes for deletion/Magnetic evaporative cooling

Ice 9?
What is Ice 9? Did you mean ICE-9 (flexible curriculum of nine essential questions for understanding and evaluating technology)? 10:24, 18 December 2004‎ User:Matevzk

Analogy
The article contains the analogy:
 * A way to visualize this is to take a bowl and fill it almost all the way up with popcorn. Then shake the bowl enough so that the bouncing isn't enough to spill over the side. Every so often one of the popped corns will jump out, "evaporating" from the bowl.

This seems misleading to me, since in the popcorn case the energy that ejects the popcorn from the bowl comes from an external source (the shaking) whereas in evaporative cooling it comes from the heat energy of the particles. Maybe ordinary evaporative cooling would be a better analogy? Gdr 01:30, 2005 Mar 19 (UTC)

The analogy is indeed somewhat incorrect! If the original author has no objections, can I replace this with a explanatory animation?

--BotCyborg (talk) 19:10, 14 January 2013 (UTC)

Temperature change
The article claims that temperatures around 50 picoKelvin are needed to make a BEC from Rubidium atoms. According to Weiman, Cornel et al. however, temperatures only need to be in the tens of microKelvins. Since they won the nobel prize for making the first gaseous BEC out of Rubidium, I say we go with their numbers.

See "Observations of Bose-Einstein condensation in a dilute atomic vapor," M.H. Anderson, J.R. Ensher, M.R. Matthews, C.E. Wieman, and E.A. Cornell, Sci. 269, 198-201 (1995)

A copy of the article is available off the NIST website at http://www.bec.nist.gov

Hermes917 00:37, 10 December 2005 (UTC)

I think the ICE-9 reference was to the kurt vonnegut novel Cat's Cradle, Ice-nine.

generalization
I suggest to change the title of the article into something more general (evaporative cooling - or, as this is already used - evaporative cooling (atomic physics)). The reason is that many experiments nowadays use optical dipole traps in which they perform evaporative cooling as well. Tim. — Preceding unsigned comment added by 188.20.144.130 (talk) 10:20, 10 September 2012 (UTC)

Adding to what the OP has said, I guess we should change the title to the more general term "Evaporative cooling (atomic physics)", as is widely used by the atomic physics community! Unless anyone has any serious objection, I am strongly in favor of changing the title. Moreover, the article is missing relevant theoretical and experimental details, which I would try to add asap.

--BotCyborg (talk) 19:08, 14 January 2013 (UTC)

New figure
I'm working on a figure to illustrate evaporative cooling. Added what I have right now. Any suggestions? 21:36, 8 June 2015 User:Shreyaspotnis

External links modified
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