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Macroscopic and microscopic polarizabilities of helium gas

1996; IOP Publishing; Volume: 29; Issue: 16 Linguagem: Inglês

10.1088/0953-4075/29/16/007

1361-6455

Leslie Pendrill,

Spectroscopy and Laser Applications

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.