Long wavelength end-effect undulator radiation (Transition Undulator Radiation)

Technical Report · Mon Jan 29 04:00:00 EST 1996

DOI:https://doi.org/10.2172/210925· OSTI ID:210925

Kincaid, B M

As first pointed out by K.-J. Kim, undulator radiation contains a broad-band component in the long wavelength region. This radiation is due to the change in longitudinal velocity of an electron upon entering and leaving an undulator. The radiation pattern is a hollow cone, peaked in the forward direction, with an opening angle of approximately 1/{gamma}, with a spectrum covering a wide range, including the infra-red and the visible. The radiation is radially polarized, analogous to transition radiation, and exhibits interference effects between the entrance and exit ends of the undulator, similar to the interference effects observed for transition radiation from a thin slab of material. A straightforward application of formulas from Jackson ({ital Classical Electrodynamics}) results in a closed form exact expression for the low frequency limit of this novel radiation effect, Transition Undulator Radiation or TUR. 3 refs., 3 figs.

• Research Organization: Lawrence Berkeley Lab., CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 210925
• Report Number(s): LBL--38245; ON: DE96009140
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ONDULATOR RADIATION
SYNCHROTRON RADIATION
TRANSITION RADIATION
WIGGLER MAGNETS