Yutaka Yamagata

Elliptical neutron-focusing supermirrors with Ni–P-plated Al–Si alloy substrates for multi-incident-angle neutron reflectometry

Yan Wei, Takuya Hosobata, Norifumi L. Yamada, Masahiro Hino et autres

This study introduces a novel approach for multi-incident-angle neutron reflectometry utilizing metallic elliptical supermirrors to enable the simultaneous focusing of two distinct neutron beams. The supermirror is composed of depth-graded NiC/Ti multilayers and functions as a reflector for grazing-incidence neutrons. Two mirror …

Submicrometer focusing of isolated attosecond XUV pulses approaching 1016 W/cm2

Kotaro Imasaka, Dianhong DONG, Natsuki Kanda, Bing Xue et autres

We demonstrate submicrometer focusing of isolated attosecond pulses (IAPs) in the extreme ultraviolet (XUV) region using a custom ellipsoidal mirror. The obtained focal spot sizes were verified using knife-edge measurements with a sharp silicon edge, confirming reproducible dimensions down to 0.46 $μ$m …

jp (code pays fourni par la source)

Development of the lightweight x-ray Wolter-I mirror using carbon fiber reinforced plastic and ultraprecision machining technology

Hironori Matsumoto, Hidetoshi Sakamoto, Kaito Murakami, Takuya Hosobata et autres

Lightweight X-ray mirrors with high angular resolution and a large effective area are essential for clarifying the coevolution of galaxies and black holes. To realize such mirrors, we are developing X-ray optics using carbon fiber–reinforced plastic (CFRP), a light yet strong material …

jp (code pays fourni par la source)

Attosecond shaping of multi-electron pulses in a home-built 37-keV beamline

Yuichi Tachibana, Marie Ouillé, Takuya Hosobata, T Isoshima et autres

Ultrashort electron pulses with a high average current provide a powerful means of enhancing time-resolved imaging and photon generation. In this study, we report the attosecond shaping of sub-relativistic electron beams using membranes in a newly developed apparatus that delivers a relatively …

jp (code pays fourni par la source)

Supplementary document for Integrated soft X-ray/visible fluorescence microscope using divided-pupil reflective optics for correlative cellular imaging - 7936178.pdf

Satoru Egawa, Kai Sakurai, Yoko Takeo, Kyota Yoshinaga et autres

supplemental document

Supplementary document for Integrated soft X-ray/visible fluorescence microscope using divided-pupil reflective optics for correlative cellular imaging - 7936178.pdf

Satoru Egawa, Kai Sakurai, Yoko Takeo, Kyota Yoshinaga et autres

supplemental document

Design of an image-slicer integral field unit with free-form mirrors for a near-infrared spectrograph SWIMS

Kosuke Kushibiki, Shinobu Ozaki, Toshihiro Tsuzuki, Yutaka Yamagata et autres

SWIMS-IFU is an image-slicer-type integral field unit (IFU) for a near-infrared imager and spectrograph SWIMS, one of the first-generation instruments for the TAO 6.5 m telescope. By optimizing a slice width to a typical seeing of 0.5″, SWIMS-IFU provides a wider field …

jp (code pays fourni par la source)

Supplementary document for Integrated soft X-ray/visible fluorescence microscope using divided-pupil reflective optics for correlative cellular imaging - 7936178.pdf

Satoru Egawa, Kai Sakurai, Yoko Takeo, Kyota Yoshinaga et autres

supplemental document

Integrated soft X-ray/visible fluorescence microscope using divided-pupil reflective optics for correlative cellular imaging

Satoru Egawa, Kai Sakurai, Yoko Takeo, Kyota Yoshinaga et autres

Observing living cells in real time is crucial to elucidating the dynamic processes underlying cellular function. We developed an integrated correlative full-field microscope that enables soft X-ray and visible fluorescence imaging with a common field of view using divided-pupil reflective optics, without …

jp, us (code pays fourni par la source)

Attosecond shaping of high-current pulsed electron beams in a home-built 37-keV beamline

Yuichi Tachibana, Marie Ouillé, Takuya Hosobata, T Isoshima et autres

Ultrashort electron pulses with a high average current provide a powerful means of enhancing time-resolved imaging and photon generation. In this study, we report the attosecond shaping of sub-relativistic electron beams using membranes in a newly developed apparatus that delivers a relatively …

Attosecond shaping of high-current pulsed electron beams in a home-built 37-keV beamline

Yuichi Tachibana, Marie Ouillé, Takuya Hosobata, T Isoshima et autres

Ultrashort electron pulses with a high average current provide a powerful means of enhancing time-resolved imaging and photon generation. In this study, we report the attosecond shaping of sub-relativistic electron beams using membranes in a newly developed apparatus that delivers a relatively …

jp, fr (code pays fourni par la source)

Submicrometer focusing of isolated attosecond XUV pulses approaching 10$^{16}$ W/cm$^2$

Kotaro Imasaka, Dianhong DONG, Natsuki Kanda, Bing Xue et autres

We demonstrate submicrometer focusing of isolated attosecond pulses (IAPs) in the extreme ultraviolet (XUV) region using a custom ellipsoidal mirror. The obtained focal spot sizes were verified using knife-edge measurements with a sharp silicon edge, confirming reproducible dimensions down to 0.46 $μ$m …

jp, cn (code pays fourni par la source)