Abstract

The correction to the polarizability of helium due to blackbody radiation is calculated near room temperature. A precise theoretical determination of the blackbody radiation correction to the polarizability of helium is essential for dielectric gas thermometry and for the determination of the Boltzmann constant. We find that the correction, for not too high temperature, is roughly proportional to a modified hyperpolarizability (two-color hyperpolarizability), which is different from the ordinary hyperpolarizability of helium. Our explicit calculations provide a definite numerical result for the effect and indicate that the effect of blackbody radiation can be excluded as a limiting factor for dielectric gas thermometry using helium or argon.

Department(s)

Physics

Keywords and Phrases

Black Body Radiation; Boltzmann Constants; Dielectric Gas; High Temperature; Hyper-polarizability; Limiting Factors; Near Room Temperature; Numerical Results; Polarizabilities; Two-color; Antenna Radiation; Argon; Dielectric Properties Of Gases; Optics; Polarization; Temperature Measurement; Thermometers; Helium

International Standard Serial Number (ISSN)

1050-2947

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2011 American Physical Society (APS), All rights reserved.

Included in

Physics Commons

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