NDLI: Photoelectron angular distributions in infrared one-photon and two-photon ionization of FEL-pumped Rydberg states of helium

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Photoelectron angular distributions in infrared one-photon and two-photon ionization of FEL-pumped Rydberg states of helium

Content Provider	Semantic Scholar
Author	Mondal, Subhendu Fukuzawa, Hironobu Motomura, Koji Tachibana, Takayuki Nagaya, Kiyonobu Sakai, Takeharu Matsunami, Kenji Yase, S. Yao, Makoto Wada, Shin-Ichi Hayashita, H. Saito, Naobumi Callegari, Carlo Prince, Kevin Charles Keeffe, Patrick O’ Bolognesi, P. Avaldi, L. Miron, C. Nagasono, Mitsuru Togashi, Tadashi Yabashi, Makina Ishikawa, Ken Ichi Sazhina, I. P. Kazansky, Andrey K. Kabachnik, Nikolay M. Ueda, Kiyoshi
Copyright Year	2013
Abstract	The photoelectron angular distributions (PADs) have been investigated for infrared (IR) ionization of He atoms excited to Rydberg states by extreme ultraviolet free-electron laser pulses. The experiment was carried out with two pulses which do not overlap in time. Depending on the intensity of the IR pulses, one IR photon ionization or additionally two-photon above-threshold ionization is observed. For low IR intensity, the PAD is well described by a contribution of s and d partial waves in accordance with early experiments. At high IR intensity, the PAD for two IR photon ionization clearly shows the contribution of higher partial waves. The experimental data are compared with the results of theoretical calculations based on solving the time-dependent Schrodinger equation.
Starting Page	205601
Ending Page	205601
Page Count	1
File Format	PDF HTM / HTML
DOI	10.1088/0953-4075/46/20/205601
Volume Number	46
Alternate Webpage(s)	http://ishiken.free.fr/Publication/Mondal2013JPB.pdf
Alternate Webpage(s)	https://doi.org/10.1088/0953-4075%2F46%2F20%2F205601
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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