Black-Body Radiation Correction to the Polarizability of Helium

Abstract

The correction to the polarizability of helium due to black-body radiation is calculated near room temperature. A precise theoretical determination of the black-body 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 black-body radiation can be excluded as a limiting factor for dielectric gas thermometry using helium or argon.

8 pages; RevTeX

References in corpus (4)

• Multipolar theory of black-body radiation shift of atomic energy levels and its implications for optical lattice clocks
• Nonrelativistic ionization energy for the helium ground state
• Comparison of classical and second quantized description of the dynamic Stark shift
• Reexamining Black-Body Shifts for Hydrogenlike Ions

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• Theoretical determination of polarizability and magnetic susceptibility of neon
• First-principles calculation of the frequency-dependent dipole polarizability of argon
• Thermal Correction to the Molar Polarizability of a Boltzmann Gas
• Dipole-dipole polarizability of the cadmium ${}^1{\mathbf{S}}_0$ state revisited
• Quantum Electrodynamic Corrections to the g Factor of Helium P States