Femtosecond X-ray pulses at 0.4 {angstrom} generated by 90{degrees} Thomson scattering: A tool for probing the structural dynamics of materials
- Lawrence Berkeley National Lab., CA (United States); and others
Pulses of X-rays 300 femtoseconds in duration at a wavelength of 0.4 angstrom (30,000 electron volts) have been generated by 90{degrees} Thomson scattering between infrared terawatt laser pulses and highly relativistic electrons from an accelerator. In the right-angle scattering geometry, the duration of the x-ray burst is determined by the transit time of the laser pulse across the {approximately} 90-micrometer waist of the focused electron beam. The x-rays are highly directed ({approximately}0.6{degrees} divergence) and can be tuned in energy. This source of femtosecond x-rays will make it possible to combine x-ray techniques with ultrafast time resolution to investigate structural dynamics on condensed matter. 23 refs., 3 tabs.
- OSTI ID:
- 443390
- Journal Information:
- Science, Journal Name: Science Journal Issue: 5285 Vol. 274; ISSN SCIEAS; ISSN 0036-8075
- Country of Publication:
- United States
- Language:
- English
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