Question

(a) In an experiment to produce a Bose-Einstein condensate, approximately 107 atoms of a bose-Einstein condensate were found to be present.
The rubidium 87Rb particles have cooled down to a temperature of 200 nK. The atoms were confined in a
volume of about 10-15 m3. Was there condensation? 87Rb: M = 86,909 g/mol, 1,44316 × 10-25 kg,
spin 1 or 2 (depending on the orientation of the nucleus spin relative to the rest of the atom).

(b) The molecular molecular hydrogen is 14 K and boils at 20 K at atmospheric pressure. The
The molecules are bosons and the density of the liquid hydrogen is 70 kg m-3. Should we expect a
Bose-Einstein condensation? Although the Bose condensation of a dilute atomic hydrogen gas has been shown to be effective, the Bose condensation of a dilute atomic hydrogen gas has been shown to be ineffective.
At 50 μK in the year 2000, the condensation of molecular hydrogen was never observed, did you know
any idea why?

Answer 1