Experiments on Radiation by Fast Electron Beams

Motz, H.; Thon, William; Whitehurst, Robert N.

doi:10.1063/1.1721389

Cited by 253 publications

(73 citation statements)

References 4 publications

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“…The second generation of synchrotron light sources increased the photon yield by the wiggler which forces the particles to follow sinusoidal trajectories. In the third generation, the amplitude of the transversely oscillating particles is reduced by the undulator [33] and the emerging photon beam interacts with the charged particle cloud. Here, the undulator period defines a certain resonant wavelength and the spectral purity of the emitted radiation increases.…”

Section: E U V a N D S O F T X -R Ay S O U R C E Smentioning

confidence: 99%

“…The undulator which provides the periodic magnetic structure has been investigated theoretically [74] and experimentally [33] in the early fifties as a source for visible light and microwave radiation. In 1977, the first free-electron laser emitted coherent light from an undulator arrangement in combination with an optical resonator [75,76].…”

Section: Free-electron Lasermentioning

confidence: 99%

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Radiation characteristics of extreme UV and soft X-ray sources

Mey¹

2015

Göttingen Series in X-Ray Physics

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Section: E U V a N D S O F T X -R Ay S O U R C E Smentioning

confidence: 99%

Section: Free-electron Lasermentioning

confidence: 99%

Radiation characteristics of extreme UV and soft X-ray sources

Mey¹

2015

Göttingen Series in X-Ray Physics

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“…For undulators 5 the requirements on f3:x and f3y are different. The undulator is a· many pole magnet that produces a coherent superposition of radiation from each "pole", giving rise to an extremely bright, quasi-monochromatic source of radiation.…”

Section: (4)mentioning

confidence: 99%

National Synchrotron Light Source (NSLS): An Optimized Source for Synchrotron Radiation

Hastings

1981

EXAFS Spectroscopy

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• 'l4 I I \ ~ q .--~ Synchrotron radiation has a number of special characteristics that make electron storage rings and synchrotrons powerful tools for research with photons . Appl ications in both basic research and technology are possible and there are exciting pr ospects for the future with the design and construction of electron storage rings dedicated to synchrotron radiation production. Synchrotron radiation has a continuous spectrum ranging from the infrared to X-ray wavelengths. It is both intense and strongl y polarized in the plane of the electron orbit. The light is emitted in pulses that are typica lly I X I o-9 sec long and have repetition frequencies of the order of 1 X 10 6 pulses per secon d. With the current designs, beam cross sections of 1 mm 2 or less can be ach ieved and the photons are sharply collimated in a narrow cone about the tangent to the orbit of the emitting particle.Since the first sustained research program with synchrotron light began in 1961 art the National Bureau of Standards utilizing a 180 MeV electron ring, all the research programs world wide have used machines that have been designed for other purposes , high energy physics in particular. Realizing that with an optimized electron storage ring the future research with synchrotron light could be even brigh ter, a number of countries have proposed and started construction of dedicated facilities in the 1970 ' s. In the sections that follow some of the considerations for an optimal design of a storage ri ng will be outlined and the choices of parameters for the Nati onal Synchrotron Light Source (NSLS) at Brookhaven National Laboratory (BNL) will be presented . Also the policy for utilization of NSLS beam lines will be described for both the 0. 7 Ge V ( VUV) storage ring and the 2.5 GeV (X-ray) storage ring.

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“…The basic principles underlying the emission of radiation from electron beams propagating through periodic magnetic fields was first described by Hans Motz in 1951 [2][3][4]. At the time, coherent optical emission was not thought to be practical due the difficulty of bunching the beam at short wavelengths, although coherent radiation was produced at millimeter wavelengths.…”

Section: Introductionmentioning

confidence: 99%

Free-electron lasers: vacuum electronic generators of coherent radiation

Freund

Neil²

1999

Proc. IEEE

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Vacuum electronic sources have shown marked improvement since the invention of the magnetron before World War II, and dramatic increases in both average powers and frequencies have been achieved. Of course, much of these gains have been achieved by the development of different devices. The typical development pattern for a given device exhibits an initial period of rapid improvement followed by a plateau determined by technological or physical limitations on the concept. Slow wave devices such as magnetrons and/or klystrons operate efficiently at frequencies up through X-band or he source of the relation ed cavity traveling wave tubes are used for various applications at frequencies ranging up through W-band. At still higher frequencies fast wave devices such as gyrotrons and free-electron lasers are required are required for high power operation.The free-electron laser concept is unique in that the mechanism is applicable across the entire electromagnetic spectrum, and free-electron lasers have been built at wavelengths from microwaves through the ultraviolet, and plans are under development for X-ray systems. Our purpose of this paper is to describe the principal directions of free-electron laser research at the present time. To this end, we first give a brief tutorial of the physics underlying the concept, and then describe the principal development paths under way.

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Experiments on Radiation by Fast Electron Beams

Cited by 253 publications

References 4 publications

Radiation characteristics of extreme UV and soft X-ray sources

Radiation characteristics of extreme UV and soft X-ray sources

National Synchrotron Light Source (NSLS): An Optimized Source for Synchrotron Radiation

Free-electron lasers: vacuum electronic generators of coherent radiation

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