Zobrazeno 1 - 10
of 286
pro vyhledávání: '"Masaharu NISHIKINO"'
Autor:
Sadaoki Kojima, Tatsuhiko Miyatake, Hironao Sakaki, Hiroyoshi Kuroki, Yusuke Shimizu, Hisanori Harada, Norihiro Inoue, Thanh Hung Dinh, Masayasu Hata, Noboru Hasegawa, Michiaki Mori, Masahiko Ishino, Mamiko Nishiuchi, Kotaro Kondo, Masaharu Nishikino, Masaki Kando, Toshiyuki Shirai, Kiminori Kondo
Publikováno v:
Matter and Radiation at Extremes, Vol 8, Iss 5, Pp 054002-054002-7 (2023)
This study reports the first experimental demonstration of surface contamination cleaning from a high-repetition supply of thin-tape targets for laser-driven carbon-ion acceleration. The adsorption of contaminants containing protons, mainly water vap
Externí odkaz:
https://doaj.org/article/d47a0448c9694d7dbe4ab4d9a60c8aab
Autor:
Tatsuhiko Miyatake, Sadaoki Kojima, Hironao Sakaki, Thanh-Hung Dinh, Ibuki Takemoto, Masayasu Hata, Masaharu Nishikino, Yukinobu Watanabe, Masahiko Ishino, Michiaki Mori, James Kevin Koga, Yoichi Yamamoto, Fuyumi Ito, Masaki Kando, Toshiyuki Shirai, Kiminori Kondo
Publikováno v:
AIP Advances, Vol 13, Iss 8, Pp 085303-085303-10 (2023)
The Modulation Transfer Function (MTF) characteristics of radiochromic film (RCF) dosimetry with optical systems were evaluated with an RCF, HD-V2, which is transferred with the line patterns of the resolution test chart. In the evaluation using a GT
Externí odkaz:
https://doaj.org/article/1991e24de644472e9314bc07af83b784
Autor:
Kosuke Fujiwara, Takaya Mitsui, Noboru Hasegawa, Masaharu Nishikino, Yasuhiro Kobayashi, Ko Mibu, Keiji Shinoda, Ryo Masuda, Makoto Seto
Publikováno v:
Applied Physics Express, Vol 17, Iss 8, p 082002 (2024)
A novel three-dimensional surface analysis system for iron-based solid materials has been developed. This system is composed of a synchrotron Mössbauer source, an X-ray focusing device, a precision stage, a gas flow proportional counter for conversi
Externí odkaz:
https://doaj.org/article/a46c4f9ee14a49c19f53a6c4ef4af056
Autor:
Jozsef Seres, Enikoe Seres, Carles Serrat, Thanh-Hung Dinh, Noboru Hasegawa, Masahiko Ishino, Masaharu Nishikino, Shinichi Namba
Publikováno v:
Atoms, Vol 11, Iss 12, p 150 (2023)
While generating high harmonics in long media of helium gas, at certain laser intensities and chirp, the spectral shift and split of the harmonic lines were experimentally observed, sometimes exceeding one harmonic order. Beyond reporting these resul
Externí odkaz:
https://doaj.org/article/35db769e511440e6b1b87f7a88cca20b
Autor:
Shinichi Namba, Jiahao Wang, Hikari Ohiro, Jiawei Zhang, Maki Kishimoto, Kotaro Yamasaki, Noboru Hasegawa, Thanhhung Dinh, Masahiko Ishino, Takeshi Higashiguchi, Masaharu Nishikino
Publikováno v:
Atoms, Vol 10, Iss 4, p 128 (2022)
A recombination plasma soft X-ray laser that is associated with Li-like Aluminum ion Al10+ 3d-4f transition (wavelength: 15.47 nm) was investigated to increase the gain coefficient. By optimizing the time interval of the 16-pulse train, higher-densit
Externí odkaz:
https://doaj.org/article/eefea856e3f941f695b02de35bcf3bfe
Autor:
Hiromu Kawasaki, Atsushi Sunahara, Yuta Shimada, Takeo Ejima, Weihua Jiang, Gerry O’Sullivan, Masaharu Nishikino, Shinichi Namba, Takeshi Higashiguchi
Publikováno v:
AIP Advances, Vol 10, Iss 6, Pp 065306-065306-6 (2020)
We achieved a relative optically thin state in laser-produced heavy element plasmas at determined electron temperatures, which has been predicted by power balance and collisional-radiative models. We also mapped the power-loss processes in sub-nanose
Externí odkaz:
https://doaj.org/article/74c8d6def543494db0d97693dd326bf6
Autor:
Yuta Shimada, Hiromu Kawasaki, Kanon Watanabe, Hiroyuki Hara, Kyoya Anraku, Misaki Shoji, Toru Oba, Masaru Matsuda, Weihua Jiang, Atsushi Sunahara, Masaharu Nishikino, Shinichi Namba, Gerry O’Sullivan, Takeshi Higashiguchi
Publikováno v:
AIP Advances, Vol 9, Iss 11, Pp 115315-115315-6 (2019)
The extension of the roadmap of shorter wavelength extreme ultraviolet and soft x-ray sources is a topic of considerable interest. We have studied the optimized emission from high power and/or high brightness sources based on unresolved transition ar
Externí odkaz:
https://doaj.org/article/9df1cff1874842e0a6d99ecace53145d
Autor:
Shunsuke Kikuchi, Katsuhiro Mikami, Daisuke Nakashima, Toshiyuki Kitamura, Noboru Hasegawa, Masaharu Nishikino, Arihiko Kanaji, Masaya Nakamura, Takeo Nagura
Publikováno v:
Sensors, Vol 19, Iss 22, p 4876 (2019)
Artificial joint acetabular cup stability is essential for successful total hip arthroplasty. However, a quantitative evaluation approach for clinical use is lacking. We developed a resonance frequency analysis (RFA) system involving a laser system t
Externí odkaz:
https://doaj.org/article/035bece872864f3790190f6e5d78a79e
Autor:
Masaharu Nishikino, Noboru Hasegawa, Takuro Tomita, Yasuo Minami, Takashi Eyama, Naoya Kakimoto, Rui Izutsu, Motoyoshi Baba, Tetsuya Kawachi, Tohru Suemoto
Publikováno v:
AIP Advances, Vol 7, Iss 1, Pp 015311-015311-5 (2017)
The initial stages of the femtosecond (fs) laser ablation process of gold, platinum, and tungsten were observed by single-shot soft x-ray imaging technique. The formation and evolution of soft x-ray Newton’s rings (NRs) were found for the first tim
Externí odkaz:
https://doaj.org/article/730b0616d308437abc545b052a86cadd
Autor:
Alexander S. Pirozhkov, Timur Zh. Esirkepov, Tatiana A. Pikuz, Anatoly Ya. Faenov, Akito Sagisaka, Koichi Ogura, Yukio Hayashi, Hideyuki Kotaki, Eugene N. Ragozin, David Neely, James K. Koga, Yuji Fukuda, Masaharu Nishikino, Takashi Imazono, Noboru Hasegawa, Tetsuya Kawachi, Hiroyuki Daido, Yoshiaki Kato, Sergei V. Bulanov, Kiminori Kondo, Hiromitsu Kiriyama, Masaki Kando
Publikováno v:
Quantum Beam Science, Vol 2, Iss 1, p 7 (2018)
We discuss requirements on relativistic-irradiance (I0 > 1018 W/cm2) high-power (multi-terawatt) ultrashort (femtosecond) lasers for efficient generation of high-order harmonics in gas jet targets in a new regime discovered recently (Pirozhkov et al.
Externí odkaz:
https://doaj.org/article/0767684262ea428a96515cbae42ac57f