A uniformly moving polarizable particle in a thermal radiation field with arbitrary spin direction

TL;DR

This paper extends previous work on the dynamics of a moving polarizable particle in thermal radiation, providing general formulas for forces and radiation that account for arbitrary spin orientations.

Contribution

It introduces generalized expressions for forces, heating, and radiation of a moving particle with arbitrary spin direction in a thermal field, expanding prior models.

Findings

Nonthermal radiation intensity is independent of particle velocity and spin orientation.

Derived formulas apply to particles with any spin direction in thermal radiation fields.

The results enhance understanding of particle-radiation interactions in thermal environments.

Abstract

We have generalized our recent results (Arm. J. Phys., 2014) relating to the dynamics, heating and radiation of a small rotating polarizable particle moving in a thermal radiation field in the case of arbitrary spin orientation. General expressions for the tangential force, heating rate and intensity of thermal and nonthermal radiation are given. It is shown that the intensity of nonthermal radiation does not depend on the linear velocity and spin direction of the particle.