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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TL;DR: In this paper, the photoabsorption of LiF, LiCl, and LiBr was investigated with high resolution at quantum energies from 60 to 230 eV using synchrotron radiation from an electron storage ring.
Abstract: The photoabsorption of LiF, LiCl, and LiBr has been investigated with high resolution at quantum energies from 60 to 230 eV using synchrotron radiation from an electron storage ring. It is found that the spectra can be understood largely in terms of transitions from the various core levels to the final-band density of states as obtained from recent band calculations. Features are found which may possibly be due to replication of the edge with the emission of one or more collective excitations.
57 citations
06 Jul 2010
TL;DR: In this paper, a large cylindrical camera was installed at the BL02B1/SPring‐8. In conceptual design, the image plate (IP) was selected as the detector, because such IP will not only detect wide range in one shot but also yield reliable data.
Abstract: The investigation of accurate structure at charge density level will not only understand the function mechanism of physical property but also lead to design new functional materials. We have successfully installed large cylindrical camera at the BL02B1/SPring‐8. In conceptual design, the image plate (IP) was selected as the detector, because such IP will not only detect wide range in one shot but also yield reliable data. In commissioning, the performance of this camera demonstrated to be suitable for the direct observation of d‐electron system.
57 citations
TL;DR: The observation of effects due to spin-orbit interaction in angle-resolved photoemission from an itinerant ferromagnet (fcc cobalt) using circularly polarized vuv synchrotron radiation is reported, which may be understood as a form of magnetic circular dichroism appearing in the uv photomission regime.
Abstract: We report the observation of effects due to spin-orbit interaction in angle-resolved photoemission from an itinerant ferromagnet (fcc cobalt) using circularly polarized vuv synchrotron radiation. The photoelectron spectra of the Co 3d-band region are found to depend on the relative orientation of the sample magnetization and the photon spin. This effect may be understood as a form of magnetic circular dichroism appearing in the uv photomission regime. It may be used to investigate magnetic phenomena in ferromagnets without performing an explicit spin-polarization analysis.
57 citations
TL;DR: In this paper, phase oscillations of electrons in a high-energy synchrotron are induced by the radiation of quanta, and these induced oscillations set a limit to the damping of electron bunches.
Abstract: Phase oscillations of electrons in a high-energy synchrotron are induced by the radiation of quanta. These induced oscillations set a limit to the damping of electron bunches. This limiting bunch size is sufficient to influence the radial aperture and the radio-frequency voltage required at low beam intensities, and to reduce energy loss by coherent radiation at high intensities.
57 citations
TL;DR: In this article, the authors make a calculation of the gyro-synchrotron emission in moving type IV sources in the solar corona, showing that most moving sources have the following features: (1) a rather strong magnetic field, ≈ 10 G, is carried out within the source, which is required to achieve high degree of circular polarization often observed.
Abstract: Calculations of the gyro-synchrotron emission are made for conditions which might be expected in moving type IV sources in the solar corona. Two simple models for an evolving source are treated: a uniform cube and an inhomogeneous sphere. The results suggest that most moving sources have the following features: (1) A rather strong magnetic field, ≈ 10 G, is carried out within the source. This is required to achieve the high degree of circular polarization often observed. (2) Synchrotron self-absorption causes the source to be optically thick at frequencies less than about 100 MHz, thus restricting the bandwidth of the radiation. The self-absorption decreases as the source moves outward and expands. The turnover frequency, which separates the optically thick and thin spectral regimes, moves rapidly to lower frequencies, accompanied by a change from low to high circular polarization. In the case of an inhomogeneous source, the source appears to be larger at the lower frequencies. (3) Razin-Tsytovich suppression cannot be an important factor in determining the characteristics of most sources.
57 citations