Title :
Competition of resonant and nonresonant paths in resonance-enhanced two-photon single ionization of He by an ultrashort extreme-ultraviolet pulse
Author :
Ishikawa, Kenichi L. ; Ueda, Kiyoshi
Author_Institution :
Photon Sci. Center, Univ. of Tokyo, Tokyo, Japan
Abstract :
The photoelectron angular distribution from the resonant two-photon ionization of He by femtosecond extreme-ultraviolet pulses dramatically varies with pulse width, due to changing competition between resonant and nonresonant ionization paths.
Keywords :
atom-photon collisions; high-speed optical techniques; photoelectron spectra; photoionisation; two-photon processes; ultraviolet spectra; He; femtosecond extreme ultraviolet pulses; laser pulse width; nonresonant two photon ionization; photoelectron angular distribution; resonance enhanced two photon He single ionization; resonant two photon ionization; ultrashort extreme ultraviolet pulse; Educational institutions; Free electron lasers; Helium; Ionization; Optical pulse generation; Scattering; Ultraviolet sources;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2012 Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4673-1839-6
