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Haruhiko Ohashi
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Journal Articles

Chemical-state imaging of a mammalian cell through multi-elemental soft x-ray spectro-ptychography

Open Access
Kai Sakurai, Yoko Takeo, Shunki Takaramoto, Noboru Furuya, Kyota Yoshinaga, Takenori Shimamura, Jordan T. O'Neal, Yu Nakata, Satoru Egawa, Kazuyoshi Yoshimi, Haruhiko Ohashi, Hidekazu Mimura, Yoshihisa Harada, Keiichi Inoue, Mari Shimura, Takashi Kimura
Journal: Applied Physics Letters
Appl. Phys. Lett. 126, 043702 (2025)
https://doi.org/10.1063/5.0237804
Published: January 2025
View article titled, Chemical-state imaging of a mammalian cell through multi-elemental soft x-ray spectro-ptychography
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Journal Articles

In situ high-pressure pair distribution function measurement of liquid and glass by using 100 keV pink beam

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Yoshio Kono, Koji Ohara, Nozomi M. Kondo, Yuji Higo, Sho Kakizawa, Hirokatsu Yumoto, Takahisa Koyama, Hiroshi Yamazaki, Yasunori Senba, Haruhiko Ohashi, Ichiro Inoue, Yujiro Hayashi, Makina Yabashi
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 95, 013904 (2024)
https://doi.org/10.1063/5.0176975
Published: January 2024
View article titled, In situ high-pressure pair distribution function measurement of liquid and glass by using 100 keV pink beam
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Journal Articles

Fabrication of ultrashort sub-meter-radius x-ray mirrors using dynamic stencil deposition with figure correction

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Takenori Shimamura, Yoko Takeo, Takashi Kimura, François Perrin, Amparo Vivo, Yasunori Senba, Hikaru Kishimoto, Haruhiko Ohashi, Hidekazu Mimura
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 94, 043102 (2023)
https://doi.org/10.1063/5.0135367
Published: April 2023
View article titled, Fabrication of ultrashort sub-meter-radius x-ray mirrors using dynamic stencil deposition with figure correction
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Journal Articles

Abrasive slurry jet machining system using polyurethane@silica core–shell particles for internal surfaces of axisymmetric x-ray mirrors

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Shunya Yokomae, Yoko Takeo, Takenori Shimamura, Yasunori Senba, Hikaru Kishimoto, Haruhiko Ohashi, Hidekazu Mimura
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 94, 015106 (2023)
https://doi.org/10.1063/5.0125242
Published: January 2023
View article titled, Abrasive slurry jet machining system using polyurethane@silica core–shell particles for internal surfaces of axisymmetric x-ray mirrors
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Journal Articles

Fabrication of soft x-ray monolithic Wolter mirror based on surface scanning measurement using touch probe

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Takehiro Kume, Kentaro Hiraguri, Yoichi Imamura, Yusuke Matsuzawa, Takahiro Saito, Hiroaki Miyashita, Yoko Takeo, Yasunori Senba, Hikaru Kishimoto, Haruhiko Ohashi, Hirokazu Hashizume, Hidekazu Mimura
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 93, 063101 (2022)
https://doi.org/10.1063/5.0087171
Published: June 2022
View article titled, Fabrication of soft x-ray monolithic Wolter mirror based on surface scanning measurement using touch probe
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Journal Articles

A highly efficient nanofocusing system for soft x rays

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Yoko Takeo, Hiroto Motoyama, Takenori Shimamura, Takashi Kimura, Takehiro Kume, Yusuke Matsuzawa, Takahiro Saito, Yoichi Imamura, Hiroaki Miyashita, Kentaro Hiraguri, Hirokazu Hashizume, Yasunori Senba, Hikaru Kishimoto, Haruhiko Ohashi, Hidekazu Mimura
Journal: Applied Physics Letters
Appl. Phys. Lett. 117, 151104 (2020)
https://doi.org/10.1063/5.0027118
Published: October 2020
View article titled, A highly efficient nanofocusing system for soft x rays
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Includes: Supplementary data
Journal Articles

Soft x-ray nanobeam formed by an ellipsoidal mirror

ScilightAvailable to Purchase
Yoko Takeo, Akihiro Suzuki, Hiroto Motoyama, Yoshinori Takei, Takehiro Kume, Yusuke Matsuzawa, Yasunori Senba, Hikaru Kishimoto, Haruhiko Ohashi, Hidekazu Mimura
Journal: Applied Physics Letters
Appl. Phys. Lett. 116, 121102 (2020)
https://doi.org/10.1063/1.5144932
Published: March 2020
View article titled, Soft x-ray nanobeam formed by an ellipsoidal mirror
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Includes: Supplementary data
Journal Articles

X-ray ring-focusing mirror

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Hidekazu Mimura, Yoko Takeo, Hiroto Motoyama, Yasunori Senba, Hikaru Kishimoto, Haruhiko Ohashi
Journal: Applied Physics Letters
Appl. Phys. Lett. 114, 131901 (2019)
https://doi.org/10.1063/1.5081837
Published: April 2019
View article titled, X-ray ring-focusing mirror
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Journal Articles

Effective protocol for realizing contamination-free X-ray reflective optics

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Haruhiko Ohashi, Yasunori Senba, Yoshinori Kotani, Takanori Miura, Hikaru Kishimoto, Takahisa Koyama
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 90, 021704 (2019)
https://doi.org/10.1063/1.5063262
Published: February 2019
View article titled, Effective protocol for realizing contamination-free X-ray reflective optics
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Journal Articles

Challenges toward 50 nrad-stability of x-rays for a next generation light source by refinements of SPring-8 standard monochromator with cryo-cooled Si crystals

Free
Hiroshi Yamazaki, Yasuhisa Matsuzaki, Yasuhiro Shimizu, Ichiro Tsuboki, Yuki Ikeya, Tomoyuki Takeuchi, Masayuki Tanaka, Takanori Miura, Hikaru Kishimoto, Yasunori Senba, Haruhiko Ohashi
Journal: AIP Conference Proceedings
AIP Conf. Proc. 2054, 060018 (2019)
https://doi.org/10.1063/1.5084649
Published: January 2019
View article titled, Challenges toward 50 nrad-stability of x-rays for a next generation light source by refinements of SPring-8 standard monochromator with cryo-cooled Si crystals
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Journal Articles

Upgrade of bending magnet MX beamline BL38B1 at SPring-8

Free
Seiki Baba, Nobuhiro Mizuno, Hideo Okumura, Nipawan Nuemket, Kazuya Hasegawa, Yuki Nakamura, Hironori Murakami, Go Ueno, Tomoki Fukui, Takaki Irie, Masayuki Tanaka, Hiroshi Yamazaki, Haruhiko Ohashi, Masaki Yamamoto, Takashi Kumasaka
Journal: AIP Conference Proceedings
AIP Conf. Proc. 2054, 060008 (2019)
https://doi.org/10.1063/1.5084639
Published: January 2019
View article titled, Upgrade of bending magnet MX beamline BL38B1 at SPring-8
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Journal Articles

Fabrication of a precise ellipsoidal mirror for soft X-ray nanofocusing

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Hidekazu Mimura, Yoshinori Takei, Takehiro Kume, Yoko Takeo, Hiroto Motoyama, Satoru Egawa, Yusuke Matsuzawa, Gota Yamaguchi, Yasunori Senba, Hikaru Kishimoto, Haruhiko Ohashi
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 89, 093104 (2018)
https://doi.org/10.1063/1.5035323
Published: September 2018
View article titled, Fabrication of a precise ellipsoidal mirror for soft X-ray nanofocusing
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Journal Articles

Systematic-error-free wavefront measurement using an X-ray single-grating interferometer

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Takato Inoue, Satoshi Matsuyama, Shogo Kawai, Hirokatsu Yumoto, Yuichi Inubushi, Taito Osaka, Ichiro Inoue, Takahisa Koyama, Kensuke Tono, Haruhiko Ohashi, Makina Yabashi, Tetsuya Ishikawa, Kazuto Yamauchi
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 89, 043106 (2018)
https://doi.org/10.1063/1.5026440
Published: April 2018
View article titled, Systematic-error-free wavefront measurement using an X-ray single-grating interferometer
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Journal Articles

Lightweight-compact variable-gap undulator with force cancellation system based on multipole monolithic magnets

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Ryota Kinjo, Akihiro Kagamihata, Takamitsu Seike, Hikaru Kishimoto, Haruhiko Ohashi, Shigeru Yamamoto, Takashi Tanaka
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 88, 073302 (2017)
https://doi.org/10.1063/1.4991652
Published: July 2017
View article titled, Lightweight-compact variable-gap undulator with force cancellation system based on multipole monolithic magnets
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Journal Articles

Upgrade of beamline BL25SU for soft x-ray imaging and spectroscopy of solid using nano- and micro-focused beams at SPring-8

Free
Yasunori Senba, Haruhiko Ohashi, Yoshinori Kotani, Tetsuya Nakamura, Takayuki Muro, Takuo Ohkochi, Naruki Tsuji, Hikaru Kishimoto, Takanori Miura, Masayuki Tanaka, Masahiro Higashiyama, Sunao Takahashi, Yasuhide Ishizawa, Tomohiro Matsushita, Yukito Furukawa, Toru Ohata, Nobuteru Nariyama, Kunikazu Takeshita, Toyohiko Kinoshita, Akihiko Fujiwara, Masaki Takata, Shunji Goto
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1741, 030044 (2016)
https://doi.org/10.1063/1.4952867
Published: July 2016
View article titled, Upgrade of beamline BL25SU for soft x-ray imaging and spectroscopy of solid using nano- and micro-focused beams at SPring-8
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Journal Articles

X-ray microfocusing with off-axis ellipsoidal mirror

Free
Hirokatsu Yumoto, Takahisa Koyama, Satoshi Matsuyama, Yoshiki Kohmura, Kazuto Yamauchi, Tetsuya Ishikawa, Haruhiko Ohashi
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1741, 040007 (2016)
https://doi.org/10.1063/1.4952879
Published: July 2016
View article titled, X-ray microfocusing with off-axis ellipsoidal mirror
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Journal Articles

Development of contamination-free x-ray optics for next-generation light sources

Free
Haruhiko Ohashi, Yasunori Senba, Hirokatsu Yumoto, Takahisa Koyama, Takanori Miura, Hikaru Kishimoto
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1741, 040023 (2016)
https://doi.org/10.1063/1.4952895
Published: July 2016
View article titled, Development of contamination-free x-ray optics for next-generation light sources
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Journal Articles

Stitching interferometry for ellipsoidal x-ray mirrors

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Hirokatsu Yumoto, Takahisa Koyama, Satoshi Matsuyama, Kazuto Yamauchi, Haruhiko Ohashi
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 87, 051905 (2016)
https://doi.org/10.1063/1.4950714
Published: May 2016
View article titled, Stitching interferometry for ellipsoidal x-ray mirrors
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Journal Articles

Damage threshold of coating materials on x-ray mirror for x-ray free electron laser

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Takahisa Koyama, Hirokatsu Yumoto, Takanori Miura, Kensuke Tono, Tadashi Togashi, Yuichi Inubushi, Tetsuo Katayama, Jangwoo Kim, Satoshi Matsuyama, Makina Yabashi, Kazuto Yamauchi, Haruhiko Ohashi
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 87, 051801 (2016)
https://doi.org/10.1063/1.4950723
Published: May 2016
View article titled, Damage threshold of coating materials on x-ray mirror for x-ray free electron laser
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Journal Articles

A beam branching method for timing and spectral characterization of hard X-ray free-electron lasers

Open Access
Tetsuo Katayama, Shigeki Owada, Tadashi Togashi, Kanade Ogawa, Petri Karvinen, Ismo Vartiainen, Anni Eronen, Christian David, Takahiro Sato, Kyo Nakajima, Yasumasa Joti, Hirokatsu Yumoto, Haruhiko Ohashi, Makina Yabashi
Journal: Structural Dynamics
Struct. Dyn. 3, 034301 (2016)
https://doi.org/10.1063/1.4939655
Published: January 2016
View article titled, A beam branching method for timing and spectral characterization of hard X-ray free-electron lasers
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