A continuous kilohertz Cu K{alpha} source produced by submillijoule femtosecond laser pulses for phase contrast imaging
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton T6G 2V4 (Canada)
We report a continuously operated Cu K{alpha} x-ray source produced by a commercial kilohertz submillijoule femtosecond laser system. The source has an x-ray conversion of {approx}4x10{sup -5} into K{alpha} line emission at 8.05 keV. The microplasma x-ray source has a size of 8 {mu}m (full width at half maximum) produced by focusing 260 {mu}J laser pulses on a moving Cu-wire target. An average photon flux of {approx}1.1x10{sup 9} photons/sr/s is obtained using the above laser pulses. The source has been used to record phase contrast images of test samples. This compact x-ray source can serve as a low cost operating system for phase contrast imaging in clinical applications.
- OSTI ID:
- 21175832
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 26 Vol. 93; ISSN APPLAB; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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