Masakazu Washio

2023

Positrons and positronium in macromolecules: Consequences of different charge states

Kobayashi, Y., Sato, K., Yamawaki, M., Michishio, K., Oka, T. & Washio, M., 2023 1月, In: Radiation Physics and Chemistry. 202, 110590.

研究成果: Article › 査読

Study on X-ray enhancement in Laser-Compton scattering for auger therapy

Koshiba, Y., Morita, R., Yamashita, K., Washio, M., Sakaue, K., Higashiguchi, T. & Urakawa, J., 2023, In: International Journal of Radiation Biology. 99, 1, p. 77-81 5 p.

研究成果: Article › 査読

2022

Energy dissipation of para-positronium in polymers and silica glass

Kobayashi, Y., Sato, K., Yamawaki, M., Michishio, K., Oka, T. & Washio, M., 2022 7月, In: Applied Physics Express. 15, 7, 076001.

研究成果: Article › 査読

1 被引用数 (Scopus)

Generation of coherent THz Cherenkov radiation by electron bunch tilt control

Tadenuma, Y., Sakaue, K., Toida, T., Nishida, M., Brameld, M., Murakami, T., Yanagisawa, R., Washio, M. & Kuroda, R., 2022 11月, In: Physical Review Accelerators and Beams. 25, 11, 110102.

研究成果: Article › 査読

Open Access

Harmonically mode-locked laser pulse accumulation in a self-resonating optical cavity

Koshiba, Y., Otsuka, S., Yamashita, K., Fukushima, C., Araki, S., Aryshev, A., Omori, T., Popov, K., Takahashi, T., Terunuma, N., Uesugi, Y., Urakawa, J. & Washio, M., 2022 11月 21, In: Optics Express. 30, 24, p. 43888-43899 12 p.

研究成果: Article › 査読

Open Access

Time-resolved Spectroscopy of Glass Ablation during Micro-via Processing using 248 nm Excimer Laser for Semiconductor Interposer Packaging

Kawasuji, Y., Adachi, Y., Moro, K., Kakizaki, K. & Washio, M., 2022, In: Journal of Laser Micro Nanoengineering. 17, 3, p. 133-140 8 p.

研究成果: Article › 査読

Open Access

Ultrafast time-resolved single-shot birefringence microscopy for laser-induced anisotropy

Terasawa, E., Satoh, D., Maru, S., Shibuya, T., Moriai, Y., Ogawa, H., Tanaka, M., Sakaue, K., Washio, M., Kobayashi, Y. & Kuroda, R., 2022 8月 1, In: Optics Letters. 47, 15, p. 3728-3731 4 p.

研究成果: Article › 査読

2021

High-charge ultrashort electron bunch generation by an energy chirping cell-attached rf electron gun and its measurement using a transverse deflecting cavity

Koshiba, Y., Tadenuma, Y., Otsuka, S., Washio, M., Takatomi, T., Urakawa, J. & Sakaue, K., 2021 8月, In: Physical Review Accelerators and Beams. 24, 8, 083401.

研究成果: Article › 査読

Open Access

1 被引用数 (Scopus)

Independent contribution of optical attenuation length in ultrafast laser-induced structural change

Shibuya, T., Sakaue, K., Ogawa, H., Satoh, D., Dinh, T. H., Ishino, M., Tanaka, M., Washio, M., Higashiguchi, T., Nishikino, M., Kon, A., Kubota, Y., Inubushi, Y., Owada, S., Kobayashi, Y. & Kuroda, R., 2021 10月 11, In: Optics Express. 29, 21, p. 33121-33133 13 p.

研究成果: Article › 査読

Open Access

Time-Resolved Pump–Probe Imaging of Ablation Phenomena in Silica Glass Using Visible Femtosecond Laser

Terasawa, E., Satoh, D., Shibuya, T., Moriai, Y., Ogawa, H., Tanaka, M., Sakaue, K., Washio, M., Kobayashi, Y. & Kuroda, R., 2021, In: Journal of Laser Micro Nanoengineering. 16, 3, p. 194-198 5 p.

研究成果: Article › 査読

Open Access

1 被引用数 (Scopus)

Trapped radical behavior of electron beam irradiated polytetrafluoroethylene fine powder at various temperatures

Oshima, A., Horiuchi, H., Nakamura, A., Kobayashi, S., Terui, A., Mino, A., Shimura, R. & Washio, M., 2021 12月, In: Scientific reports. 11, 1, 10907.

研究成果: Article › 査読

Open Access

3 被引用数 (Scopus)

2020

Ablation threshold and crater morphology of amorphous and crystalline SiO₂ glass for extreme ultraviolet femtosecond pulses

Shibuya, T., Sakaue, K., Ogawa, H., Dinh, T. H., Satoh, D., Terasawa, E., Washio, M., Tanaka, M., Higashiguchi, T., Ishino, M., Kubota, Y., Inubushi, Y., Owada, S., Nishikino, M., Kobayashi, Y. & Kuroda, R., 2020 12月 1, In: Japanese journal of applied physics. 59, 12, 122004.

研究成果: Article › 査読

Durability improvement of Cesium Telluride photocathode for an rf-gun

Tamba, T., Miyamastsu, J., Ezawa, K., Koshiba, Y., Sakaue, K., Ijima, H. & Washio, M., 2020 5月, In: Journal of Instrumentation. 15, 5, C05006.

研究成果: Article › 査読

1 被引用数 (Scopus)

Fabrication of thermo-responsive cell-culture membranes with Poly(N-isopropylacrylamide) by electron-beam graft polymerization

Shimura, R., Suematsu, Y., Horiuchi, H., Takeoka, S., Oshima, A. & Washio, M., 2020 6月, In: Radiation Physics and Chemistry. 171, 108741.

研究成果: Article › 査読

4 被引用数 (Scopus)

Pulse duration dependence of ablation threshold for fused silica in the visible femtosecond regime

Terasawa, E., Shibuya, T., Satoh, D., Moriai, Y., Ogawa, H., Tanaka, M., Kuroda, R., Kobayashi, Y., Sakaue, K. & Washio, M., 2020 6月 1, In: Applied Physics A: Materials Science and Processing. 126, 6, 446.

研究成果: Article › 査読

5 被引用数 (Scopus)

Quasi-monochromatic THz pulse generation using Cherenkov radiation from a spatially modulated electron beam

Tadenuma, Y., Murakami, T., Brameld, M., Washio, M., Sakaue, K., Kuroda, R. & Taira, Y., 2020 4月, In: Journal of Instrumentation. 15, 4, C04016.

研究成果: Article › 査読

1 被引用数 (Scopus)

Soft x-ray laser beamline for surface processing and damage studies

Ishino, M., Dinh, T. H., Hosaka, Y., Hasegawa, N., Yoshimura, K., Yamamoto, H., Hatano, T., Higashiguchi, T., Sakaue, K., Ichimaru, S., Hatayama, M., Sasaki, A., Washio, M., Nishikino, M. & Maekawa, Y., 2020 4月 20, In: Applied Optics. 59, 12, p. 3692-3698 7 p.

研究成果: Article › 査読

1 被引用数 (Scopus)

2019

CO₂ conversion by high-dose rate electron beam irradiation: One-step, metal-free and simultaneous production of H₂, CO, CH₄, C₂H₆ and organic acids from an acid-decomposed CaCO₃/additive EtOH mixture

Hosokawa, Y., Kajiya, S., Ohshima, A., Ishida, N., Washio, M. & Usuki, A., 2019, In: Green Chemistry. 21, 11, p. 3091-3098 8 p.

研究成果: Article › 査読

2 被引用数 (Scopus)

Controlled strong excitation of silicon as a step towards processing materials at sub-nanometer precision

Dinh, T. H., Medvedev, N., Ishino, M., Kitamura, T., Hasegawa, N., Otobe, T., Higashiguchi, T., Sakaue, K., Washio, M., Hatano, T., Kon, A., Kubota, Y., Inubushi, Y., Owada, S., Shibuya, T., Ziaja, B. & Nishikino, M., 2019 12月 1, In: Communications Physics. 2, 1, 150.

研究成果: Article › 査読

Open Access

18 被引用数 (Scopus)

Study on a long-life photocathode with an CsBr protective layer for an rf electron gun

Ono, H., Miyamatsu, J., Tamba, T., Sakaue, K., Washio, M., Iijima, H. & Zen, H., 2019, In: Japanese journal of applied physics. 58, 6, 066005.

研究成果: Article › 査読

2 被引用数 (Scopus)

2018

Deep-hole drilling of amorphous silica glass by extreme ultraviolet femtosecond pulses

Shibuya, T., Takahashi, T., Sakaue, K., Dinh, T. H., Hara, H., Higashiguchi, T., Ishino, M., Koshiba, Y., Nishikino, M., Ogawa, H., Tanaka, M., Washio, M., Kobayashi, Y. & Kuroda, R., 2018 10月 8, In: Applied Physics Letters. 113, 15, 151901.

研究成果: Article › 査読

12 被引用数 (Scopus)

Demonstration of a terahertz pure vector beam by tailoring geometric phase

Wakayama, T., Higashiguchi, T., Sakaue, K., Washio, M. & Otani, Y., 2018 12月 1, In: Scientific reports. 8, 1, 8690.

研究成果: Article › 査読

Open Access

13 被引用数 (Scopus)

Fabrication of thermo-responsive PNIPAAm-g-ETFE for cell culture dishes by pre-irradiation grafting

Yamahara, Y., Nagasawa, N., Taguchi, M., Oshima, A. & Washio, M., 2018 1月, In: Radiation Physics and Chemistry. 142, p. 88-93 6 p.

研究成果: Article › 査読

4 被引用数 (Scopus)

Stabilization of burst laser pulse storage in an optical enhancement cavity using a counter propagating mode

Sakaue, K., Washio, M., Araki, S., Fukuda, M., Honda, Y., Terunuma, N. & Urakawa, J., 2018 2月 1, In: Review of Scientific Instruments. 89, 2, 023305.

研究成果: Article › 査読

4 被引用数 (Scopus)

Study on electron-beam-induced reactions of methyl α-allyloxymethyl acrylic polymer

Hosaka, Y., Kondoh, T., Oyama, T. G., Uchida, T., Taguchi, M., Yoshida, Y. & Washio, M., 2018, In: Journal of Photopolymer Science and Technology. 31, 1, p. 85-90 6 p.

研究成果: Article › 査読

Open Access

2017

Development of optical resonant cavities for laser-Compton scattering

Akagi, T., Araki, S., Honda, Y., Kosuge, A., Omori, T., Shimizu, H., Terunuma, N., Urakawa, J., Takahashi, T., Tanaka, R., Uesugi, Y., Yoshitama, H., Hosaka, Y., Sakaue, K. & Washio, M., 2017 7月 1, In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms. 402, p. 370-372 3 p.

研究成果: Article › 査読

2016

Contribution of material's surface layer on charge state distribution in laser ablation plasma

Kumaki, M., Steski, D., Ikeda, S., Kanesue, T., Okamura, M. & Washio, M., 2016 2月, In: Review of Scientific Instruments. 87, 2, 02A921.

研究成果: Article › 査読

7 被引用数 (Scopus)

Feedback-free optical cavity with self-resonating mechanism

Uesugi, Y., Hosaka, Y., Honda, Y., Kosuge, A., Sakaue, K., Omori, T., Takahashi, T., Urakawa, J. & Washio, M., 2016 5月 1, In: APL Photonics. 1, 2, 026103.

研究成果: Article › 査読

Open Access

5 被引用数 (Scopus)

2015

Demonstration of the stabilization technique for nonplanar optical resonant cavities utilizing polarization

Akagi, T., Araki, S., Funahashi, Y., Honda, Y., Miyoshi, S., Okugi, T., Omori, T., Shimizu, H., Sakaue, K., Takahashi, T., Tanaka, R., Terunuma, N., Uesugi, Y., Urakawa, J., Washio, M. & Yoshitama, H., 2015 4月 1, In: Review of Scientific Instruments. 86, 4, 043303.

研究成果: Article › 査読

4 被引用数 (Scopus)

Determination of the polarization states of an arbitrary polarized terahertz beam: Vectorial vortex analysis

Wakayama, T., Higashiguchi, T., Oikawa, H., Sakaue, K., Washio, M., Yonemura, M., Yoshizawa, T., Tyo, J. S. & Otani, Y., 2015 3月 24, In: Scientific reports. 5, 9416.

研究成果: Article › 査読

23 被引用数 (Scopus)

Generation of low-flux X-ray micro-planar beams and their biological effect on a murine subcutaneous tumor model

Hong, Z., Zenkoh, J., Le, B., Gerelchuluun, A., Suzuki, K., Moritake, T., Washio, M., Urakawa, J. & Tsuboi, K., 2015 9月 1, In: Journal of radiation research. 56, 5, p. 768-776 9 p.

研究成果: Article › 査読

2 被引用数 (Scopus)

Generation of radially polarized high energy mid-infrared optical vortex by use of a passive axially symmetric ZnSe waveplate

Wakayama, T., Oikawa, H., Sasanuma, A., Arai, G., Fujii, Y., Dinh, T. H., Higashiguchi, T., Sakaue, K., Washio, M., Miura, T., Takahashi, A., Nakamura, D., Okada, T., Yonemura, M. & Otani, Y., 2015 8月 24, In: Applied Physics Letters. 107, 8, 081112.

研究成果: Article › 査読

6 被引用数 (Scopus)

Space charges remaining in polymers after electron beam irradiation and the role of conductivity in their decay profiles

Tomite, N., Arai, Y., Ohki, Y., Hinata, T. & Washio, M., 2015 5月 1, In: IEEJ Transactions on Electrical and Electronic Engineering. 10, 3, p. 237-241 5 p.

研究成果: Article › 査読

1 被引用数 (Scopus)

Temporal profile measurement of an electron bunch with the two-cell rf deflecting cavity at Waseda University

Sakaue, K., Nishimura, Y., Nishiyama, M., Takahashi, T., Washio, M., Takatomi, T. & Urakawa, J., 2015 2月 1, In: Japanese journal of applied physics. 54, 2, 026301.

研究成果: Article › 査読

8 被引用数 (Scopus)

2014

Analyses of the plasma generated by laser irradiation on sputtered target for determination of the thickness used for plasma generation

Kumaki, M., Ikeda, S., Fuwa, Y., Cinquegrani, D., Sekine, M., Munemoto, N., Kanesue, T., Okamura, M. & Washio, M., 2014 2月, In: Review of Scientific Instruments. 85, 2, 02B925.

研究成果: Article › 査読

6 被引用数 (Scopus)

Characterization of THz radiation generated by ultra-short bunch from energy chirping cell attached RF electron gun

Koshiba, Y., Sakaue, K., Mizugaki, M., Washio, M., Kuroda, R., Takatomi, T. & Urakawa, J., 2014 11月, In: Vibrational Spectroscopy. 75, p. 184-189 6 p.

研究成果: Article › 査読

4 被引用数 (Scopus)

Design of a two-cell rf-deflector cavity for ultra-short electron bunch measurement

Nishimura, Y., Sakaue, K., Nishiyama, M., Takahashi, T., Washio, M., Takatomi, T. & Urakawa, J., 2014 11月 11, In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 764, p. 291-298 8 p.

研究成果: Article › 査読

15 被引用数 (Scopus)

Fabrication of function-graded proton exchange membranes for direct methanol fuel cells using electron beam-grafting

Tsuchida, R., Hiraiwa, S., Tsukamoto, A., Washio, M. & Oshima, A., 2014 1月 1, In: Fuel Cells. 14, 2, p. 284-290 7 p.

研究成果: Article › 査読

4 被引用数 (Scopus)

Optimization of X-ray microplanar beam radiation therapy for deep-seated tumors by a simulation study

Shinohara, K., Kondoh, T., Nariyama, N., Fujita, H., Washio, M. & Aoki, Y., 2014, In: Journal of X-Ray Science and Technology. 22, 3, p. 395-406 12 p.

研究成果: Article › 査読

9 被引用数 (Scopus)

Positive-negative dual-tone sensitivities of ZEP resist

Oyama, T. G., Nakamura, H., Oshima, A., Washio, M. & Tagawa, S., 2014 3月, In: Applied Physics Express. 7, 3, 036501.

研究成果: Article › 査読

5 被引用数 (Scopus)

Ultrashort electron bunch generation by an energy chirping cell attached rf gun

Sakaue, K., Koshiba, Y., Mizugaki, M., Washio, M., Takatomi, T., Urakawa, J. & Kuroda, R., 2014 2月 19, In: Physical Review Special Topics - Accelerators and Beams. 17, 2, 023401.

研究成果: Article › 査読

13 被引用数 (Scopus)

2013

Construction of nanosecond and picosecond pulse radiolysis system with supercontinuum probe

Hosaka, Y., Betto, R., Sakaue, K., Kuroda, R., Kashiwagi, S., Ushida, K. & Washio, M., 2013 3月, In: Radiation Physics and Chemistry. 84, p. 10-13 4 p.

研究成果: Article › 査読

15 被引用数 (Scopus)

Development of a three dimensional four mirror optical cavity for laser-Compton scattering

Akagi, T., Araki, S., Funahashi, Y., Honda, Y., Kataoka, H., Kon, T., Miyoshi, S., Okugi, T., Omori, T., Sakaue, K., Shimizu, H., Takahashi, T., Tanaka, R., Terunuma, N., Urakawa, J., Washio, M. & Yoshitama, H., 2013, In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 724, p. 63-71 9 p.

研究成果: Article › 査読

12 被引用数 (Scopus)

Fabrication of function-graded proton exchange membranes by electron beam irradiation for polymer electrolyte fuel cells under nonhumidified condition

Tsuchida, R., Tsukamoto, A., Hiraiwa, S., Oshima, A. & Washio, M., 2013, In: Journal of Power Sources. 240, p. 351-358 8 p.

研究成果: Article › 査読

3 被引用数 (Scopus)

Method of predicting resist sensitivity for 6.x nm extreme ultraviolet lithography

Oyama, T. G., Oshima, A., Washio, M. & Tagawa, S., 2013 7月, In: Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures. 31, 4, 041604.

研究成果: Article › 査読

8 被引用数 (Scopus)

Micro/nanofabrication of poly(_L-lactic acid) using focused ion beam direct etching

Oyama, T. G., Hinata, T., Nagasawa, N., Oshima, A., Washio, M., Tagawa, S. & Taguchi, M., 2013 10月 14, In: Applied Physics Letters. 103, 16, 163105.

研究成果: Article › 査読

13 被引用数 (Scopus)

Pulse radiolysis study on a highly sensitive chlorinated resist ZEP520A

Hosaka, Y., Oyama, T. G., Oshima, A., Enomoto, S., Washio, M. & Tagawa, S., 2013 12月 1, In: Journal of Photopolymer Science and Technology. 26, 6, p. 745-750 6 p.

研究成果: Article › 査読

12 被引用数 (Scopus)

Study on direct etching of poly(tetrafluoroethylene) by high-energy heavy ion beams

Tsubokura, H., Oshima, A., Oyama, T. G., Takasawa, Y., Fukutake, N., Okubo, S., Yoshikawa, T., Oka, T., Murakami, T., Hama, Y. & Washio, M., 2013 11月, In: Radiation Physics and Chemistry. 92, p. 37-42 6 p.

研究成果: Article › 査読

3 被引用数 (Scopus)

Thermal and radiation process for nano-/micro-fabrication of crosslinked PTFE

Kobayashi, A., Oshima, A., Okubo, S., Tsubokura, H., Takahashi, T., Oyama, T. G., Tagawa, S. & Washio, M., 2013, In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms. 295, p. 76-80 5 p.

研究成果: Article › 査読

4 被引用数 (Scopus)

2012

Electron-beam-induced decomposition mechanisms of high-sensitivity chlorinated resist ZEP520A

Oyama, T. G., Enomoto, K., Hosaka, Y., Oshima, A., Washio, M. & Tagawa, S., 2012 3月, In: Applied Physics Express. 5, 3, 036501.

研究成果: Article › 査読

20 被引用数 (Scopus)

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