Topic
Synchrotron radiation
About: Synchrotron radiation is a research topic. Over the lifetime, 14639 publications have been published within this topic receiving 244775 citations. The topic is also known as: magnetobremsstrahlung radiation & Synchrotron Radiation.
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01 Jan 1974
TL;DR: In this article, focused synchrotron radiation collimated by means of a pinhole was used to construct a scanning x-ray microscope capable of making stereoscopic element-discriminating pictures of relatively thick specimens in an atmospheric environment.
Abstract: Focused synchrotron radiation collimated by means of a pinhole has been used to construct a scanning x-ray microscope capable of making stereoscopic element-discriminating pictures of relatively thick specimens in an atmospheric environment.
143 citations
TL;DR: The experimental results show a gradual decrease of the Dissociation energy for removal of one water molecule for small neutral water clusters, and this dissociation energy is discussed within the context of hydrogen bond breaking in a neutral water cluster.
Abstract: Tunable vacuum ultraviolet (VUV) photoionization studies of water clusters are performed using 10−14 eV synchrotron radiation and analyzed by reflectron time-of-flight (TOF) mass spectrometry. Phot...
143 citations
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20 Nov 1989
TL;DR: The Hamiltonian approach to electrodynamics radiation reaction uniformly accelerated charges radiation emitted by relativistic and non-relativistic moving particles synchrotron radiation.
Abstract: The Hamiltonian approach to electrodynamics radiation reaction uniformly accelerated charges radiation emitted by relativistic and non-relativistic moving particles synchrotron radiation electrodynamics of a continuous medium the Cerenkov and Doppler effects transition radiation and transition scattering superluminal sources of radiation reabsorption and transfer of radiation electrodynamics of media with spatial dispersion permittivity and wave propagation in plasmas the energy-momentum tensor and forces in macroscopic electrodynamics, energy and heat liberated in a dispersive absorbing medium fluctuations and van der Waals forces wave scattering in a medium astrophysics of cosmic rays x-ray astronomy gamma-ray astronomy.
142 citations
TL;DR: Possible astronomical sources of ultraviolet circularly polarized light (UVCPL) which might be responsible for enantiomeric selection in interstellarorganic molecules are considered, Synchrotron radiation from magnetic neutronstars has been suggested as a possible source of UVCPL.
Abstract: Possible astronomical sources of ultraviolet circularly polarized light(UVCPL) which might be responsible for enantiomeric selection in interstellarorganic molecules are considered, Synchrotron radiation from magnetic neutronstars has been suggested as a possible source of UVCPL However, synchrotronradiation in these situations is not predicted to be strongly circularlypolarized Very few such sources show optical synchrotron radiation and in thefew that do circular polarization has not been observed Magnetic white dwarfsand white dwarf binaries (Polars) can be highly circularly polarized but anyeffect on molecular clouds and star formation regions must rely on rare chance encounters Recent observations show that substantial levels of circularpolarization are present in reflection nebulae in star formation regions Thismechanism produces polarized light exactly when and where it is needed inregions where star formation is occurring and organic molecules are known to be present
142 citations
TL;DR: In this article, the relativistic drift kink instability deforms and then disrupts the layer, resulting in significant plasma heating but few non-thermal particles, and a moderate guide field stabilizes the layer and enables particle acceleration.
Abstract: The discovery of rapid synchrotron gamma-ray flares above 100 MeV from the Crab Nebula has attracted new interest in alternative particle acceleration mechanisms in pulsar wind nebulae. Diffuse shock-acceleration fails to explain the flares because particle acceleration and emission occur during a single or even sub-Larmor timescale. In this regime, the synchrotron energy losses induce a drag force on the particle motion that balances the electric acceleration and prevents the emission of synchrotron radiation above 160 MeV. Previous analytical studies and two-dimensional (2D) particle-in-cell (PIC) simulations indicate that relativistic reconnection is a viable mechanism to circumvent the above difficulties. The reconnection electric field localized at X-points linearly accelerates particles with little radiative energy losses. In this paper, we check whether this mechanism survives in three dimension (3D), using a set of large PIC simulations with radiation reaction force and with a guide field. In agreement with earlier works, we find that the relativistic drift kink instability deforms and then disrupts the layer, resulting in significant plasma heating but few non-thermal particles. A moderate guide field stabilizes the layer and enables particle acceleration. We report that 3D magnetic reconnection can accelerate particles above the standard radiation reaction limit, although the effectmore » is less pronounced than in 2D with no guide field. We confirm that the highest-energy particles form compact bunches within magnetic flux ropes, and a beam tightly confined within the reconnection layer, which could result in the observed Crab flares when, by chance, the beam crosses our line of sight.« less
141 citations