Radiation of Relativistic Particles in a Quasi-Homogeneous Magnetic Field

TL;DR

This paper analyzes the radiation spectrum of relativistic particles in a quasi-homogeneous magnetic field, focusing on combined curvature and undulator radiation effects depending on the pitch-angle.

Contribution

It provides new calculations for the radiation spectrum when both curvature and undulator radiation are observed in nonhomogeneous magnetic fields.

Findings

Spectrum depends on pitch-angle $eta$.

Both curvature and undulator radiation are observed.

Calculations show combined radiation characteristics.

Abstract

Spectrum of radiation of a relativistic particle moving in a nonhomogeneous magnetic field is considered. The spectrum depends on the pitch-angle $\alpha$ between the velocity direction and a line tangent to the field line. In case of very small $\alpha$ the particle generates so-called curvature radiation, in an intermediate case undulator-kind radiation is produced. In this paper we present the calculations of radiation properties in a case when both curvature and undulator radiation is observed.