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Chirality in electromagnetic radiation from relativistic electrons
Masahiro Katoh1,2, Masaki Fujimoto3, Elham Salehi2
1Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-hiroshima, Japan.
Chirality
|May 16, 2024
Summary
Electrons in circular motion emit radiation, losing energy and angular momentum. This radiation exhibits helical structures linked to orbital angular momentum, arising from relativistic field deformation.
Area of Science:
- Physics
- Electromagnetism
- Quantum Optics
Background:
- Electrons in circular motion generate electromagnetic radiation.
- This radiation carries energy and angular momentum away from the electron.
- The emitted radiation is characterized by circular polarization (spin angular momentum) and helical phase structure (orbital angular momentum).
Purpose of the Study:
- To investigate the origin of chiral topological properties in electromagnetic radiation emitted by electrons.
- To elucidate the connection between relativistic effects and orbital angular momentum in radiation.
- To provide a classical electrodynamics explanation for the helical phase structure of emitted radiation.
Main Methods:
- Application of classical electrodynamics principles.
- Analysis of electron motion in circular paths.
- Examination of the electromagnetic field structure and its deformation.
Main Results:
- Demonstration that emitted radiation possesses both spin and orbital angular momentum.
- Identification of helical phase structure as a key characteristic of the radiation.
- Establishment of a link between relativistic effects and the emergence of orbital angular momentum.
Conclusions:
- The chiral topological property associated with orbital angular momentum originates from the deformation of the electromagnetic field.
- Relativistic effects are crucial in generating the helical phase structure of radiation emitted by electrons in circular motion.
- Classical electrodynamics provides a framework for understanding these complex radiation phenomena.
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