603 citations
- Japan Synchrotron Radiation Research InstituteJP301 papers
- The University of TokyoJP158 papers
- University of HyogoJP78 papers
- The University of OsakaJP77 papers
- Japan Atomic Energy AgencyJP74 papers
- RIKENJP66 papers
- Tohoku UniversityJP62 papers
- National Institute for Materials ScienceJP53 papers
- Japan Science and Technology AgencyJP45 papers
- Hiroshima UniversityJP44 papers
- High Energy Accelerator Research OrganizationJP42 papers
- Kyoto UniversityJP42 papers
8 papers · 1 filter
Photoelectron spectroscopy of 3s3p doubly excited helium dressed with strong near-infrared laser fields
Mizuho Fushitani, Chien-Nan Liu, Yuki Ono +9
We report time-resolved photoelectron spectroscopy of the doubly excited states of helium dressed by an intense near-infrared (NIR) laser field. Using synchronized XUV free-…
Femtosecond reduction of atomic scattering factors triggered by intense x-ray pulse
Ichiro Inoue, Jumpei Yamada, Konrad J. Kapcia +12
X-ray diffraction of silicon irradiated with tightly focused femtosecond x-ray pulses (photon energy: 11.5 keV, pulse duration: 6 fs) was measured at various x-ray intensities up t…
Generation of Intense Phase-Stable Femtosecond Hard X-ray Pulse Pairs
Yu Zhang, Thomas Kroll, Clemens Weninger +24
Coherent nonlinear spectroscopies and imaging in the X-ray domain provide direct insight into the coupled motions of electrons and nuclei with resolution on the electronic length a…
The Heidelberg compact electron beam ion traps
P. Micke, S. Kühn, L. Buchauer +16
Electron beam ion traps (EBIT) are ideal tools for both production and study of highly charged ions (HCI). In order to reduce their construction, maintenance, and operation costs w…
Superfluorescence, free-induction decay, and four-wave mixing: propagation of free-electron laser pulses through a dense sample of helium ions
James R Harries, Hiroshi Iwayama, Susumu Kuma +9
We report an experimental and numerical study of the propagation of free-electron laser pulses (wavelength 24.3 nm) through helium gas. Ionisation and excitation populates the He$^…
Simultaneous measurements of super-radiance at multiple wavelengths from helium excited states: (I) Experiment
Kyo Nakajima, James R. Harries, Hiroshi Iwayama +8
In this paper, we report the results of measurements of the intensities and delays of super-radiance decays from excited helium atoms at multiple wavelengths. The experiment was pe…