Charge and Nuclear Dynamics Induced by Deep Inner-Shell Multiphoton Ionization of CH3I Molecules by Intense X-ray Free-Electron Laser Pulses.
In recent years, free-electron lasers operating in the true X-ray regime have opened up access to the femtosecond-scale dynamics induced by deep inner-shell ionization. We have investigated charge creation and transfer dynamics in the context of molecular Coulomb explosion of a single molecule, exposed to sequential deep inner-shell ionization within an ultrashort (10 fs) X-ray pulse. The target molecule was CH3I, methane sensitized to X-rays by halogenization with a heavy element, iodine. Time-of-flight ion spectroscopy and coincident ion analysis was employed to investigate, via the properties of the atomic fragments, single-molecule charge states of up to +22. Experimental findings have been compared with a parametric model of simultaneous Coulomb explosion and charge transfer in the molecule. The study demonstrates that including realistic charge dynamics is imperative when molecular Coulomb explosion experiments using short-pulse facilities are performed.
†Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan.
Koji
K
Motomura
†Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan.|‡Department of Physics and Astronomy, University of Turku, Turku FI-20014, Finland.
Edwin
E
Kukk
†Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan.|§RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan.
Hironobu
H
Fukuzawa
§RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan.|∥Department of Physical Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan.
Shin-ichi
S
Wada
§RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan.|⊥Department of Physics, Kyoto University, Kyoto 606-8502, Japan.
Kiyonobu
K
Nagaya
⊥Department of Physics, Kyoto University, Kyoto 606-8502, Japan.
Satoshi
S
Ohmura
†Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan.
Subhendu
S
Mondal
†Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan.
Tetsuya
T
Tachibana
†Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan.
Yuta
Y
Ito
∥Department of Physical Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan.
Ryosuke
R
Koga
⊥Department of Physics, Kyoto University, Kyoto 606-8502, Japan.
Tsukasa
T
Sakai
⊥Department of Physics, Kyoto University, Kyoto 606-8502, Japan.
Kenji
K
Matsunami
#J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, United States.
Artem
A
Rudenko
∇Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, FR-91192 Gif-sur-Yvette Cedex, France.
Christophe
C
Nicolas
∇Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, FR-91192 Gif-sur-Yvette Cedex, France.
Xiao-Jing
XJ
Liu
∇Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, FR-91192 Gif-sur-Yvette Cedex, France.|○Extreme Light Infrastructure - Nuclear Physics (ELI-NP), "Horia Hulubei" National Institute for Physics and Nuclear Engineering, 30 Reactorului Street, RO-077125 Măgurele, Jud. Ilfov, Romania.
Catalin
C
Miron
◆Shanghai Advanced Research Institute, Chinese Academy of Sciences, 201210 Shanghai, China.
Yizhu
Y
Zhang
◆Shanghai Advanced Research Institute, Chinese Academy of Sciences, 201210 Shanghai, China.
Yuhai
Y
Jiang
¶Shanghai Institute of Applied Physics, Chinese Academy of Sciences, 201800 Shanghai, China.
Jianhui
J
Chen
∫Department of Physics, CASTECH, MPC-AS, POSTECH, Pohang, Korea.
Mailam
M
Anand
∫Department of Physics, CASTECH, MPC-AS, POSTECH, Pohang, Korea.
Dong Eon
DE
Kim
⊗Japan Synchrotron Radiation Research Institute (JASRI), Sayo, Hyogo 679-5198, Japan.
Kensuke
K
Tono
§RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan.
Makina
M
Yabashi
⊥Department of Physics, Kyoto University, Kyoto 606-8502, Japan.
Makoto
M
Yao
†Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan.|§RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan.
Kiyoshi
K
Ueda
Coulomb explosion; X-ray free-electron laser; charge transfer; multiphoton multiple ionization; ultrafast dynamics