Rotating crystal cube as a variable shutter for use with synchrotron radiation.
A beam chopper together with the temporal structure of x-rays emitted by a synchrotrons storage ring can be utilized to generate x-ray bursts of variable length and time separation. A Si cube, cut for diffraction from the (220) planes, was mounted to a low-speed motor to produce a beam chopper based upon the Darwin width of the crystal. An x-ray pulse, consisting of an envelope of individual pulses characterizing the loading pattern of the storage ring, was transmitted. The width of the transmitted pulse and the time between pulses was varied by varying the rotation frequency of the Si cube. Pulses as short as {approx} 75 ps or as long as {approx} 4 {micro}s were transmitted with pulse separation spanning from 4 ms to 167 ms.
- Research Organization:
- Argonne National Lab., IL (US)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 10730
- Report Number(s):
- ANL/XFD/CP-96074
- Country of Publication:
- United States
- Language:
- English
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