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Shigeki Owada
Researcher at University of Tokyo
Publications - 130
Citations - 2091
Shigeki Owada is an academic researcher from University of Tokyo. The author has contributed to research in topics: Laser & Femtosecond. The author has an hindex of 19, co-authored 100 publications receiving 1375 citations. Previous affiliations of Shigeki Owada include Kyoto University.
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Journal ArticleDOI
A three-dimensional movie of structural changes in bacteriorhodopsin
Eriko Nango,Antoine Royant,Antoine Royant,Minoru Kubo,Takanori Nakane,Cecilia Wickstrand,Tetsunari Kimura,Tomoyuki Tanaka,Kensuke Tono,Changyong Song,Rie Tanaka,Toshi Arima,Ayumi Yamashita,Jun Kobayashi,Toshiaki Hosaka,Eiichi Mizohata,Przemyslaw Nogly,Michihiro Sugahara,Daewoong Nam,Takashi Nomura,Tatsuro Shimamura,Dohyun Im,Takaaki Fujiwara,Yasuaki Yamanaka,Byeonghyun Jeon,Tomohiro Nishizawa,Tomohiro Nishizawa,Kazumasa Oda,Masahiro Fukuda,Rebecka Andersson,Petra Båth,Robert Dods,Jan Davidsson,Shigeru Matsuoka,Satoshi Kawatake,Michio Murata,Osamu Nureki,Shigeki Owada,Takashi Kameshima,Takaki Hatsui,Yasumasa Joti,Gebhard F. X. Schertler,Gebhard F. X. Schertler,Makina Yabashi,Ana-Nicoleta Bondar,Jörg Standfuss,Richard Neutze,So Iwata +47 more
TL;DR: Time-resolved serial femtosecond crystallography at an x-ray free electron laser shows how motions are choreographed as bR transports protons uphill against a transmembrane concentration gradient.
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Extreme ultraviolet free electron laser seeded with high-order harmonic of Ti:sapphire laser
Tadashi Togashi,Eiji J. Takahashi,Katsumi Midorikawa,Makoto Aoyama,Koichi Yamakawa,Takahiro Sato,Atsushi Iwasaki,Shigeki Owada,Tomoya Okino,Kaoru Yamanouchi,Fumihiko Kannari,Akira Yagishita,Hidetoshi Nakano,M.E. Couprie,Kenji Fukami,Takaki Hatsui,Toru Hara,Takashi Kameshima,Hideo Kitamura,Noritaka Kumagai,Shinichi Matsubara,Mitsuru Nagasono,Haruhiko Ohashi,Takashi Ohshima,Yuji Otake,Tsumoru Shintake,Kenji Tamasaku,Hitoshi Tanaka,Takashi Tanaka,Kazuaki Togawa,Hiromitsu Tomizawa,Takahiro Watanabe,Makina Yabashi,Tetsuya Ishikawa +33 more
TL;DR: The random and uncontrollable spikes, which appeared in the spectra of the Self-Amplified Spontaneous Emission (SASE) based FEL radiation without the seeding source, were found to be suppressed drastically to form to a narrow-band, single peak profile at 61.2 nm.
Journal ArticleDOI
A beam branching method for timing and spectral characterization of hard X-ray free-electron lasers.
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 +13 more
TL;DR: The result showed the applicability of the beam branching scheme to advanced photon diagnostics, which will further enhance experimental capabilities of XFEL, and the validity of this timing-monitoring scheme.
Journal ArticleDOI
Observation of femtosecond X-ray interactions with matter using an X-ray–X-ray pump–probe scheme
Ichiro Inoue,Yuichi Inubushi,Takahiro Sato,Kensuke Tono,Tetsuo Katayama,Takashi Kameshima,Kanade Ogawa,Tadashi Togashi,Shigeki Owada,Yoshiyuki Amemiya,Takashi Tanaka,Toru Hara,Makina Yabashi +12 more
TL;DR: It was found that the atomic position is freezing until 20 fs after the XFEL irradiation, which supports the feasibility of damageless structural determinations with ultraintense XFel pulses, and the pump–probe scheme demonstrated here is an effective way to capture X-ray–matter interactions.
Journal ArticleDOI
A soft X‐ray free‐electron laser beamline at SACLA: the light source, photon beamline and experimental station
Shigeki Owada,Kazuaki Togawa,Takahiro Inagaki,Toru Hara,Takashi Tanaka,Yasumasa Joti,Takahisa Koyama,Kyo Nakajima,Haruhiko Ohashi,Yasunori Senba,Tadashi Togashi,Kensuke Tono,Mitsuhiro Yamaga,Hirokatsu Yumoto,Makina Yabashi,Hitoshi Tanaka,Tetsuya Ishikawa +16 more
TL;DR: The status of a soft X-ray free-electron laser beamline at SACLA is reported.