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Your search keyword '"Kochurikhin, Vladimir"' showing total 15 results
Start Over Author "Kochurikhin, Vladimir" Journal japanese journal of applied physics
15 results on '"Kochurikhin, Vladimir"'

1. Prototype fabrication of optical-guiding Tl:CsI crystal scintillators and investigation of the crystallization process

Author

Yajima, Ryuga, primary, Kamada, Kei, additional, Murakami, Rikito, additional, Kutsuzawa, Naoko, additional, Sasaki, Rei, additional, Yoshino, Masao, additional, Horiai, Takahiko, additional, Kim, Kyoung Jin, additional, Kochurikhin, Vladimir, additional, Yamaji, Akihiro, additional, Kurosawa, Shunsuke, additional, Yokota, Yuui, additional, Sato, Hiroki, additional, Toyoda, Satoshi, additional, Ohashi, Yuji, additional, HANADA, Takashi, additional, and Yoshikawa, Akira, additional

Published
2023
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3. Growth and scintillation properties of LiBr/CeBr3 eutectic scintillator for neutron detection

Author

Yajima, Ryuga, primary, Kamada, Kei, additional, Takizawa, Yui, additional, Yoshino, Masao, additional, Kim, Kyoung Jin, additional, Kochurikhin, Vladimir. V., additional, Yamaji, Akihiro, additional, Kurosawa, Shunsuke, additional, Yokota, Yuui, additional, Sato, Hiroki, additional, Toyoda, Satoshi, additional, Ohashi, Yuji, additional, Hanada, Takashi, additional, and Yoshikawa, Akira, additional

Published
2022
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4. Large size growth of terbium doped BaCl2/NaCl/KCl eutectic for radiation imaging

Author

Takizawa, Yui, primary, Kamada, Kei, additional, Kim, Kyoung Jin, additional, Yoshino, Masao, additional, Yamaji, Akihiro, additional, Kurosawa, Shunsuke, additional, Yokota, Yuui, additional, Sato, Hiroki, additional, Toyoda, Satoshi, additional, Ohashi, Yuji, additional, Hanada, Takashi, additional, Kochurikhin, Vladimir. V., additional, and Yoshikawa, Akira, additional

Published
2022
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5. Development of large size crystal growth technology of oxide eutectic scintillator and a proto-type Talbot–Lau imaging system

Author

Kamada, Kei, primary, Yamaguchi, Hiroaki, additional, Yasui, Nobuhiro, additional, Ohashi, Ryota, additional, Den, Toru, additional, Kim, Kyoung Jin, additional, Yoshino, Masao, additional, Yamaji, Akihiro, additional, Kurosawa, Shunsuke, additional, Shoji, Yasuhiro, additional, Yokota, Yuui, additional, Kochurikhin, Vladimir. V., additional, and Yoshikawa, Akira, additional

Published
2021
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7. Growth of 6 Li-enriched LiCl/BaCl2 eutectic as a novel neutron scintillator.

Author

Takizawa, Yui, Kamada, Kei, Yoshino, Masao, Yajima, Ryuga, Kim, Kyoung Jin, Kochurikhin, Vladimir. V., and Yoshikawa, Akira

Abstract

In this study, Eu:6LiCl/BaCl2 with a high Li concentration was developed as a novel thermal neutron scintillator. Eu ions were doped as activators for the BaCl2 phase, and Eu:6LiCl/BaCl2 eutectics were grown via the vertical Bridgman–Stockbarger method in quartz ampoules (inner diameter = 4 mm). The Eu:6LiCl/BaCl2 eutectic exhibited a lamellar eutectic structure and optical transparency. The 400 nm emission due to the Eu2+ 4f–5d transition was observed in the BaCl2 phase by a cathode luminescence measurement. The light yield under neutrons was estimated to be over 20 200 photons MeV−1. A PSD study was also performed using gamma and alpha-rays. The Eu:6LiCl/BaCl2 eutectic scintillator showed good potential for PSD. [ABSTRACT FROM AUTHOR]

Published
2022
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8. Growth and scintillation properties of LiBr/CeBr3 eutectic scintillator for neutron detection.

Author

Yajima, Ryuga, Kamada, Kei, Takizawa, Yui, Yoshino, Masao, Kim, Kyoung Jin, Kochurikhin, Vladimir. V., Yamaji, Akihiro, Kurosawa, Shunsuke, Yokota, Yuui, Sato, Hiroki, Toyoda, Satoshi, Ohashi, Yuji, Hanada, Takashi, and Yoshikawa, Akira

Abstract

A 6LiBr/CeBr3 eutectic thermal-neutron scintillator, with a high 6Li concentration, was developed using the vertical Bridgman method. The grown eutectic contained an 6Li molar ratio of 35%, which is higher than those of the commercial neutron scintillators such as Ce:LiCaAlF6 and Ce:Cs2LiYCl6. Furthermore, it showed optical transparency and a lamellar eutectic structure elongating along the growth direction. The synthesized eutectic showed emission peaks at 360 and 380 nm, originating from the Ce3+ 5d-4f transition in the CeBr3 scintillation phase. The scintillation performance of 6LiBr/CeBr3 was evaluated under X-ray, γ -ray, and neutron irradiation to corroborate its neutron detection potential. [ABSTRACT FROM AUTHOR]

Published
2022
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9. Large size growth of terbium doped BaCl2/NaCl/KCl eutectic for radiation imaging.

Author

Takizawa, Yui, Kamada, Kei, Kim, Kyoung Jin, Yoshino, Masao, Yamaji, Akihiro, Kurosawa, Shunsuke, Yokota, Yuui, Sato, Hiroki, Toyoda, Satoshi, Ohashi, Yuji, Hanada, Takashi, Kochurikhin, Vladimir. V., and Yoshikawa, Akira

Abstract

In this study, a large-size eutectic scintillator of Tb-doped BaCl2/NaCl/KCl was grown using the Czochralski (Cz) and halide vertical Bridgman methods (H-VB). The suitability of these two growth methods for growing the eutectic was compared. Finally, 1 inch diameter eutectic bulks were obtained using the H-VB method. The Tb3+-derived strongest intensity peak at approximately 550 nm was observed by X-ray irradiation. An approximately 3 × 3 mm transparent eutectic wafer was cut and polished from the grown eutectic bulk. An imaging test using α -ray was performed using the grown eutectic, a fiber optic plate, and an electron-multiplying CCD camera. The resolution performance for radiation-imaging applications was evaluated. [ABSTRACT FROM AUTHOR]

Published
2022
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10. Growth and scintillation properties of Tl-doped CsI/CsCl/NaCl ternary eutectic scintillators.

Author

Takizawa, Yui, Kamada, Kei, Yoshino, Masao, Yamaji, Akihiro, Kurosawa, Shunsuke, Yokota, Yuui, Sato, Hiroki, Toyoda, Satoshi, Ohashi, Yuji, Hanada, Takashi, Kochurikhin, Vladimir. V., and Yoshikawa, Akira

Abstract

Tl:CsI/CsCl/NaCl eutectic scintillators were grown by the Bridgman–Stockbarger method. The eutectic phases were uniformly distributed in the transverse direction and slightly aligned along the growth direction. Then, the CsI phase can be designed as columnar. The expected emission peak observed at 550 nm was observed under X-ray excitation and cathodoluminescence and was ascribed to the self-trapped exciton perturbed by TI+ in Tl:CsI. The mapping of optically waveguided light emission was observed by confocal laser microscopy, consequently optical waveguiding of Tl+ emission in the CsI phase was demonstrated. [ABSTRACT FROM AUTHOR]

Published
2021
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13. Growth of 6Li-enriched LiCl/BaCl2eutectic as a novel neutron scintillator

Author

Takizawa, Yui, Kamada, Kei, Yoshino, Masao, Yajima, Ryuga, Kim, Kyoung Jin, Kochurikhin, Vladimir. V., and Yoshikawa, Akira

Abstract

In this study, Eu:6LiCl/BaCl2with a high Li concentration was developed as a novel thermal neutron scintillator. Eu ions were doped as activators for the BaCl2phase, and Eu:6LiCl/BaCl2eutectics were grown via the vertical Bridgman–Stockbarger method in quartz ampoules (inner diameter = 4 mm). The Eu:6LiCl/BaCl2eutectic exhibited a lamellar eutectic structure and optical transparency. The 400 nm emission due to the Eu2+4f–5d transition was observed in the BaCl2phase by a cathode luminescence measurement. The light yield under neutrons was estimated to be over 20 200 photons MeV-1. A PSD study was also performed using gamma and alpha-rays. The Eu:6LiCl/BaCl2eutectic scintillator showed good potential for PSD.

Published
2022
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14. Growth and scintillation properties of LiBr/CeBr3eutectic scintillator for neutron detection

Author

Yajima, Ryuga, Kamada, Kei, Takizawa, Yui, Yoshino, Masao, Kim, Kyoung Jin, Kochurikhin, Vladimir. V., Yamaji, Akihiro, Kurosawa, Shunsuke, Yokota, Yuui, Sato, Hiroki, Toyoda, Satoshi, Ohashi, Yuji, Hanada, Takashi, and Yoshikawa, Akira

Abstract

A 6LiBr/CeBr3eutectic thermal-neutron scintillator, with a high 6Li concentration, was developed using the vertical Bridgman method. The grown eutectic contained an 6Li molar ratio of 35%, which is higher than those of the commercial neutron scintillators such as Ce:LiCaAlF6 and Ce:Cs2LiYCl6. Furthermore, it showed optical transparency and a lamellar eutectic structure elongating along the growth direction. The synthesized eutectic showed emission peaks at 360 and 380 nm, originating from the Ce3+5d-4f transition in the CeBr3scintillation phase. The scintillation performance of 6LiBr/CeBr3was evaluated under X-ray, ?-ray, and neutron irradiation to corroborate its neutron detection potential.

Published
2022
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15. Growth and Characterization of Gadolinium Vanadate GdVO4Single Crystals for Laser Applications

Author

Shimamura, Kiyoshi, Uda, Satoshi, Kochurikhin, Vladimir V., Tetsuo Taniuchi, Tetsuo Taniuchi, and Tsuguo Fukuda, Tsuguo Fukuda

Abstract

We have successfully grown Nd3+-doped gadolinium vanadate ( Nd:GdVO4) single crystals by a modified Czochralski method in which a high temperature gradient was maintained at the interface during growth. Step faceting occurred during crystal growth and the cause of the faceting is discussed in relation to the growth conditions. Laser diode (LD) pumped laser oscillations were demonstrated. The Nd:GdVO4single crystal showed superior lasing properties to Nd:YVO4and Nd:YAG single crystals.

Published
1996
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