Kothari, D. S. ; Srivasava, B. N.
(1937)
*Joule-Thomson effect and quantum statistics*
Nature, 140
.
pp. 970-971.
ISSN 0028-0836

Full text not available from this repository.

Official URL: http://www.nature.com/nature/journal/v140/n3553/ab...

Related URL: http://dx.doi.org/10.1038/140970b0

## Abstract

In view of the numerous physical and astro-physical applications of the new quantum statistics it may be worth while to investigate the Joule-Thomson effect for a gas obeying Fermi-Dirac or Bose-Einstein statistics. The calculation is simple and runs on the usual lines. The results obtained are quite interesting. It is found that for a degenerate gas, degenerate in the sense of Fermi-Dirac statistics, Joule-Thomson expansion produces a heating effect, the rise in temperature for a given fall in pressure being greater, the greater the degree of degeneracy of the gas. In fact where n denotes the number of particles (each of mass m) per unit volume, p the pressure, T the temperature, g the weight factor (for electrons g = 2), k the Boltzmann constant and h is Plank's constant. A_{0} is called the "degeneracy discriminant" and its value gives a measure of the degree of degeneracy (or of non-degeneracy in the case of non-degenerate gas). For degeneracy A_{0} ≫1 and in non-degeneracy A0 ≪ 1.

Item Type: | Article |
---|---|

Source: | Copyright of this article belongs to Nature Publishing Group. |

ID Code: | 32516 |

Deposited On: | 30 Mar 2011 11:16 |

Last Modified: | 09 Jun 2011 08:34 |

Repository Staff Only: item control page