synchrotron radiation

synchrotron radiation
Joao Paulo Bessa Brito · CC BY-SA 4.0 · source
Name	Synchrotron radiation
Caption	Electron storage ring producing synchrotron radiation
Field	Accelerator physics
Discovered	1947
Discoverers	Frank Elder Halton; E. M. McMillan (theoretical contributors)
Applications	CERN; Brookhaven National Laboratory; Argonne National Laboratory

synchrotron radiation

Synchrotron radiation is electromagnetic emission produced when relativistic charged particles are accelerated transversely, observed in particle accelerators and astrophysical environments. It underpins experimental programs at facilities such as CERN, Diamond Light Source, European Synchrotron Radiation Facility, and drives research across institutions like Lawrence Berkeley National Laboratory, SLAC National Accelerator Laboratory, and Max Planck Society laboratories. The phenomenon has shaped programs at Brookhaven National Laboratory, Argonne National Laboratory, DESY, and influenced studies by researchers associated with University of Cambridge, Massachusetts Institute of Technology, and California Institute of Technology.

Introduction

Synchrotron radiation arises when charged particles follow curved trajectories under magnetic fields in devices like storage rings and bending magnets located at centers such as Fermilab, National Synchrotron Light Source, Elettra Sincrotrone, and SPring-8. Observations in astrophysical contexts connect to objects studied by NASA, European Space Agency, and projects including Hubble Space Telescope, Chandra X-ray Observatory, and Very Large Array. Experimental programs at facilities run by Brookhaven National Laboratory, Argonne National Laboratory, Lawrence Berkeley National Laboratory, and SLAC National Accelerator Laboratory exploit this radiation for spectroscopy, imaging, and structural studies.

Physical Mechanism

Relativistic electrons in magnetic structures such as undulators, wigglers, and bending magnets inside machines like Diamond Light Source, European XFEL, and SPring-8 undergo centripetal acceleration, emitting broadband radiation predicted by electrodynamics from contributors tied to Paul Dirac, James Clerk Maxwell, and analysis by scientists at CERN and DESY. Quantum corrections to classical emission involve contributions discussed in contexts linked to Werner Heisenberg, Enrico Fermi, and researchers at Lawrence Berkeley National Laboratory and Brookhaven National Laboratory. The mechanism depends on Lorentz transformations familiar in work at Princeton University and University of Oxford.

Properties and Spectrum

The emitted spectrum spans radio to X-ray bands exploited by projects like Atacama Large Millimeter Array, Chandra X-ray Observatory, and XMM-Newton, with spectral features analyzed at institutions such as Max Planck Society observatories and Caltech. Polarization characteristics relate to studies by teams at University of Manchester, University of Tokyo, and Imperial College London. Brightness, brilliance, and coherence parameters guide instrument design at facilities including Brookhaven National Laboratory and Argonne National Laboratory, while spectral shaping via insertion devices is developed by collaborations including DESY, CERN, and SLAC National Accelerator Laboratory.

Sources and Production

Man-made sources include storage rings, free-electron lasers, and compact light sources engineered at European XFEL, FERMI (free-electron laser), LCLS, and ELI (Extreme Light Infrastructure). Components like undulators and wigglers are designed by groups at Diamond Light Source, SPring-8, and Elettra Sincrotrone. Astrophysical sources implicated in studies by NASA and European Space Agency include pulsar wind nebulae, active galactic nuclei studied by Very Long Baseline Array, and supernova remnants observed with Very Large Telescope. Accelerator physics advances from teams at Fermi National Accelerator Laboratory, CERN, and DESY increase available photon flux for experiments at Brookhaven National Laboratory and Lawrence Berkeley National Laboratory.

Applications

Synchrotron radiation supports structural biology efforts at centers like European Synchrotron Radiation Facility, Argonne National Laboratory, and Diamond Light Source for macromolecular crystallography used in drug discovery programs associated with GlaxoSmithKline and Pfizer. Materials science programs at Oak Ridge National Laboratory and Max Planck Society institutes apply X-ray spectroscopy and imaging techniques. Cultural heritage studies involve collaborations with museums such as British Museum and Smithsonian Institution. Nanoscience projects linked to MIT, Stanford University, and University of California, Berkeley use coherent beams for lithography and microscopy, while environmental science teams at NOAA employ synchrotron-based elemental analysis.

Detection and Measurement

Instrumentation for detection and beam diagnostics is developed by laboratories including SLAC National Accelerator Laboratory, Lawrence Berkeley National Laboratory, and DESY, with detectors from vendors collaborating with Brookhaven National Laboratory and Argonne National Laboratory. Techniques such as X-ray absorption spectroscopy, small-angle X-ray scattering, and imaging are standardized through programs at European Synchrotron Radiation Facility and Diamond Light Source. Beamline control and data acquisition draw on software frameworks from collaborations with CERN, ESA, and research groups at University of Oxford and Technical University of Munich.

History and Development

Early observations at electron synchrotrons in the 1940s involved researchers associated with University of Manchester, University of Cambridge, and Princeton University, while subsequent facility-driven development occurred at Brookhaven National Laboratory, Lawrence Berkeley National Laboratory, SLAC National Accelerator Laboratory, and CERN. The expansion to national and international light source projects engaged organizations such as European Synchrotron Radiation Facility, Diamond Light Source, SPring-8, and DESY, reflecting contributions from scientists connected to Max Planck Society, Caltech, and MIT. Awards and recognition in accelerator and photon science included prizes granted by Royal Society, National Academy of Sciences, and institutions that honor advances in accelerator physics and photon science.

Category:Electromagnetic radiation