@article {2211,
	title = {Subfemtosecond K-Shell Excitation with a Few-Cycle Infrared Laser Field},
	journal = {Physical Review Letters},
	volume = {108},
	number = {2},
	year = {2012},
	month = {2012},
	pages = {023201},
	abstract = {Subfemtosecond bursts of extreme ultraviolet radiation, facilitated by a process known as high-order harmonic generation, are a key ingredient for attosecond metrology, providing a tool to precisely initiate and probe ultrafast dynamics in the microcosms of atoms, molecules, and solids. These ultrashort pulses are always, and as a by-product of the way they are generated, accompanied by laser-induced recollisions of electrons with their parent ions. By using a few-cycle infrared (λ0=2.1 μm) driving laser, we were able to directly excite high-energy (\~870 eV) inner-shell electrons through laser-induced electron recollision, opening the door to time-resolved studies of core-level and concomitant multielectron dynamics.},
	keywords = {hhg - KeV energies, HHG with IR, HHG with molecules, HHG yield, inner shells processes, laser induced electron recollision, my papers},
	url = {http://link.aps.org/doi/10.1103/PhysRevLett.108.023201},
	author = {Marcus, Gilad and Helml, Wolfram and Gu, Xun and Deng, Yunpei and Hartmann, Robert and Kobayashi, Takayoshi and Strueder, Lothar and Kienberger, Reinhard and Krausz, Ferenc}
}
