Macroscopic and microscopic polarizabilities of helium gas
- 28 August 1996
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic, Molecular and Optical Physics
- Vol. 29 (16) , 3581-3586
- https://doi.org/10.1088/0953-4075/29/16/007
Abstract
Precise electromagnetic measurements of the polarizability (dielectricity, refractivity) of a macroscopic sample of helium gas are re-examined in view of recently published ab initio calculations of the helium atomic polarizability, including relativistic effects. The collation yields a new estimate of the Boltzmann constant as well as a general assessment of the reliability of optical and electrical measurements of the polarization properties of helium gas.Keywords
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