Spectral narrowing of x-ray pulses for precision spectroscopy with nuclear resonances
| Autor: | Christoph H. Keitel, Hans-Christian Wille, Stephan Goerttler, Andreas Kaldun, Jörg Evers, Dominik Lentrodt, Cornelius Strohm, Ralf Röhlsberger, Rudolf Rüffer, Thomas Pfeifer, Kilian Peter Heeg, Christian Reinhold Ott, Rajagopalan Subramanian, Johann Haber, Patrick Reiser |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Range (particle radiation)
Multidisciplinary Photon Chemistry business.industry Resolution (electron density) Resonance 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Pulse (physics) Optics 0103 physical sciences ddc:500 010306 general physics 0210 nano-technology business Spectroscopy Radiant intensity Energy (signal processing) |
| Zdroj: | Science Science 357(6349), 375-378 (2017). doi:10.1126/science.aan3512 |
| DOI: | 10.1126/science.aan3512 |
| Popis: | Science 357(6349), 375 - 378(2017). doi:10.1126/science.aan3512 Spectroscopy of nuclear resonances offers a wide range of applications due to the remarkable energy resolution afforded by their narrow linewidths. However, progress toward higher resolution is inhibited at modern x-ray sources because they deliver only a tiny fraction of the photons on resonance, with the remainder contributing to an off-resonant background. We devised an experimental setup that uses the fast mechanical motion of a resonant target to manipulate the spectrum of a given x-ray pulse and to redistribute off-resonant spectral intensity onto the resonance. As a consequence, the resonant pulse brilliance is increased while the off-resonant background is reduced. Because our method is compatible with existing and upcoming pulsed x-ray sources, we anticipate that this approach will find applications that require ultranarrow x-ray resonances. Published by AAAS, Washington, DC [u.a.] |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|