 | ||||||||
 | | | | | ||||
| | | ||||||
| |
BibTeX file of [LaForge21] [show it without abstract] @article{LaForge21, author={Aaron C. LaForge and Sang-Kil Son and Debadarshini Mishra and Markus Ilchen and Stephen Duncanson and Eemeli Eronen and Edwin Kukk and Stanislaw Wirok-Stoletow and Daria Kolbasova and Peter Walter and Rebecca Boll and Alberto De Fanis and Michael Meyer and Yevheniy Ovcharenko and Daniel E. Rivas and Philipp Schmidt and Sergey Usenko and Robin Santra and Nora Berrah}, title={Resonance-enhanced multiphoton ionization in the x-ray regime}, journal={Phys. Rev. Lett.}, volume={127}, pages={213202}, year={2021}, keywords={Ar; resonance; x-ray; REMPI; XREMPI; XATOM; European XFEL; experiment; XFEL; CFEL; DESY;}, url={https://doi.org/10.1103/PhysRevLett.127.213202}, doi={10.1103/PhysRevLett.127.213202}, abstract={Here, we report on the nonlinear ionization of argon atoms in the short wavelength regime using ultraintense x rays from the European XFEL. After sequential multiphoton ionization, high charge states are obtained. For photon energies that are insufficient to directly ionize a $1s$ electron, a different mechanism is required to obtain ionization to Ar$^{17+}$. We propose this occurs through a two-color process where the second harmonic of the FEL pulse resonantly excites the system via a $1s$$\rightarrow$$2p$ transition followed by ionization by the fundamental FEL pulse, which is a type of x-ray resonance-enhanced multiphoton ionization (REMPI). This resonant phenomenon occurs not only for Ar$^{16+}$, but also through lower charge states, where multiple ionization competes with decay lifetimes, making x-ray REMPI distinctive from conventional REMPI. With the aid of state-of-the-art theoretical calculations, we explain the effects of x-ray REMPI on the relevant ion yields and spectral profile. } } Aaron C. LaForge, Sang-Kil Son, Debadarshini Mishra, Markus Ilchen, Stephen Duncanson, Eemeli Eronen, Edwin Kukk, Stanislaw Wirok-Stoletow, Daria Kolbasova, Peter Walter, Rebecca Boll, Alberto De Fanis, Michael Meyer, Yevheniy Ovcharenko, Daniel E. Rivas, Philipp Schmidt, Sergey Usenko, Robin Santra, and Nora Berrah, Resonance-enhanced multiphoton ionization in the x-ray regime, Phys. Rev. Lett. 127, 213202 (2021) ![[pdf]](/biblio/img/pdf.gif) [pdf]![[abstract]](/biblio/img/abstract.gif) [abstract]![[link]](/biblio/img/link.gif) doi:10.1103/PhysRevLett.127.213202
made by ZN | | | ||||
| | | ||||||
| | | | | ||||
|
저작권에 대한 본 사항이 명시되는 한, 어떠한 정보 매체에 의한 본문의 전재나 발췌도 무상으로 허용됩니다. [copyleft] | | ||||||
