| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1829587 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2007 | 4 Pages |
Abstract
We show that the radiation from a helical undulator not only carries spin angular momentum (circular polarization) but also orbital angular momentum. This exotic property of the undulator radiation may be useful in coherent X-ray imaging and scattering experiments and to probe electronic transitions in matter by orbital dichroism spectroscopy. Also, we present that a new magnet configuration, similar to the structure of Figure-8 undulator or the PERA undulator, may generate right- and left-hand circularly polarized off-axis radiation simultaneously.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
Shigemi Sasaki, Ian McNulty, Roger Dejus,