Spontaneous radiation emission from short, high field strength magnetic devices

Since the earliest papers on undulators were published, it has been known how to calculate the spontaneous emission spectrum from short undulators when the magnetic field strength parameter is small compared to unity, or in “single” frequency sinusoidal undulators where the magnetic field strength p...

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Main Author: G. A. Krafft
Format: Article
Language:English
Published: American Physical Society 2006-01-01
Series:Physical Review Special Topics. Accelerators and Beams
Online Access:http://doi.org/10.1103/PhysRevSTAB.9.010701
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author G. A. Krafft
author_facet G. A. Krafft
author_sort G. A. Krafft
collection DOAJ
description Since the earliest papers on undulators were published, it has been known how to calculate the spontaneous emission spectrum from short undulators when the magnetic field strength parameter is small compared to unity, or in “single” frequency sinusoidal undulators where the magnetic field strength parameter is comparable to or larger than unity, but where the magnetic field amplitude is constant throughout the undulator. Fewer general results have been obtained in the case where the magnetic device is both short, i.e., the magnetic field strength parameter changes appreciably throughout the device, and the magnetic field strength is high enough that ponderomotive effects, radiation retardation, and harmonic generation are important physical phenomena. In this paper a general method is presented for calculating the radiation spectrum for short, high-field magnetic devices. It is used to calculate the emission from some designs of recent interest.
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spelling doaj.art-43a83a73d77b4796ab7b9edc653d2ef32022-12-22T02:25:14ZengAmerican Physical SocietyPhysical Review Special Topics. Accelerators and Beams1098-44022006-01-019101070110.1103/PhysRevSTAB.9.010701Spontaneous radiation emission from short, high field strength magnetic devicesG. A. KrafftSince the earliest papers on undulators were published, it has been known how to calculate the spontaneous emission spectrum from short undulators when the magnetic field strength parameter is small compared to unity, or in “single” frequency sinusoidal undulators where the magnetic field strength parameter is comparable to or larger than unity, but where the magnetic field amplitude is constant throughout the undulator. Fewer general results have been obtained in the case where the magnetic device is both short, i.e., the magnetic field strength parameter changes appreciably throughout the device, and the magnetic field strength is high enough that ponderomotive effects, radiation retardation, and harmonic generation are important physical phenomena. In this paper a general method is presented for calculating the radiation spectrum for short, high-field magnetic devices. It is used to calculate the emission from some designs of recent interest.http://doi.org/10.1103/PhysRevSTAB.9.010701
spellingShingle G. A. Krafft
Spontaneous radiation emission from short, high field strength magnetic devices
Physical Review Special Topics. Accelerators and Beams
title Spontaneous radiation emission from short, high field strength magnetic devices
title_full Spontaneous radiation emission from short, high field strength magnetic devices
title_fullStr Spontaneous radiation emission from short, high field strength magnetic devices
title_full_unstemmed Spontaneous radiation emission from short, high field strength magnetic devices
title_short Spontaneous radiation emission from short, high field strength magnetic devices
title_sort spontaneous radiation emission from short high field strength magnetic devices
url http://doi.org/10.1103/PhysRevSTAB.9.010701
work_keys_str_mv AT gakrafft spontaneousradiationemissionfromshorthighfieldstrengthmagneticdevices