72 citations · 191 across the 7 of their papers we have counts for
7 papers
Full characterization of few-cycle superradiant pulses generated from a free-electron laser oscillator
Heishun Zen, Ryoichi Hajima, Hideaki Ohgaki
The detailed structure of few-cycle superradiant pulses generated from a free-electron laser (FEL) oscillator was experimentally revealed for the first time. As predicted in numeri…
Damage threshold and focusability of mid-infrared free-electron laser pulses gated by a plasma mirror with nanosecond switching pulses
Xiaolong Wang, Takashi Nakajima, Heishun Zen +2
The presence of a pulse train structure of an oscillator-type free-electron laser (FEL) results in the immediate damage of a solid target upon focusing. We demonstrate that the las…
Diagnosis of the Wavelength Stability of a Mid-Infrared Free-Electron Laser
Xiaolong Wang, Yu Qin, Takashi Nakajima +3
Wavelength stability of free-electron lasers (FELs) is one of the important parameters for various applications. In this paper we describe two different methods to diagnose the wav…
Single-shot spectra of temporally selected micropulses from a mid-infrared free-electron laser by upconversion
Xiaolong Wang, Takashi Nakajima, Heishun Zen +2
We demonstrate the measurement of single-shot spectra of temporally selected micropulses from a mid-infrared (MIR) free-electron laser (FEL) by upconversion. We achieve the upconve…
Simultaneous measurement of the photodisintegration of 4He in the giant dipole resonance region
T. Shima, S. Naito, Y. Nagai +6
We have performed for the first time the simultaneous measurement of the two-body and three-body photodisintegration cross-sections of 4He in the energy range from 21.8 to 29.8 MeV…
Photo-disintegration cross section measurements on W, Re and Os: Implications for the Re-Os cosmochronology
T. Shizuma, H. Utsunomiya, P. Mohr +11
Cross sections of the W, Re, Os() reactions were measured using quasi-monochromatic photon beams from laser Compton scattering (LCS) with average energ…
s-process branching at 185W revised
P. Mohr, T. Shizuma, H. Ueda +7
The neutron capture cross section of the unstable s-process branching nucleus 185W has been derived from experimental data of the inverse 186W(g,n)185W photodisintegration taken wi…