M. Dodenhöft, I. Mochizuki, K. Wada, T. Hyodo, P. Richter, P. Schädlich, T. Seyller, and C. Hugenschmidt, "Determination of the spacing between hydrogen-intercalated quasifreestanding monolayer graphene and 6H-SiC(0001) using total-reflection high-energy positron diffraction", Phys. Rev. B 108, 155438 (2023). https://doi.org/10.1103/PhysRevB.108.155438
Y. Fukaya, S. Entani, and S. Sakai, "Reversible structure change in graphene/metal interface by intercalation and deintercalation", Phys. Rev. B 108, 155422 (2023). https://doi.org/10.1103/PhysRevB.108.155422
Y. Tsujikawa, M. Horio, X. Zhang, T. Senoo, T. Nakashima, Y. Ando, T. Ozaki, I. Mochizuki, K. Wada, T. Hyodo, T. Iimori, F. Komori, T. Kondo, and I. Matsuda, "Structural and electronic evidence of boron atomic chains", Phys. Rev. B 106, 205406 (2022). https://doi.org/10.1103/PhysRevB.106.205406
Y. Motoyama, K. Yoshimi, I. Mochizuki, H. Iwamoto, H. Ichinos, T. Hoshi, "Data-analysis software framework 2DMAT and its application to experimental measurements for two-dimensional material structures", Comput. Phys. Commun. 280, 108465 (2022). https://doi.org/10.1016/j.cpc.2022.108465
Y. Tsujikawa, M. Shouji, M. Hamada, T. Takeda, I. Mochizuki, T. Hyodo, I. Matsuda and A. Takayama, "Structure of χ3-Borophene studied by Total-reflection high-energy positron diffraction (TRHEPD)", Molecules 27, 4219 (2022). https://doi.org/10.3390/molecules27134219
T. Hanada, Y. Motoyama, K. Yoshimi, T. Hoshi, "sim-trhepd-rheed - Open-source simulator of total-reflection high-energy positron diffraction (TRHEPD) and reflection high-energy electron diffraction (RHEED)", Comput. Phys. Commun. 277, 108371 (2022). https://doi.org/10.1016/j.cpc.2022.108371
T. Hoshi, D. Sakata, S. Oied, I. Mochizuki, S. Tanaka, T. Hyodo and K. Hukushima, "Data-driven sensitivity analysis in surface structure determination using total-reflection high-energy positron diffraction (TRHEPD)", online published in Comp. Phys. Comm. on 4 Oct. (2021). https://doi.org/10.1016/j.cpc.2021.108186 → Press release (in Japanese)(2021.11.24)
A. Fleurence, C.-C. Lee, R. Friedlein, Y. Fukaya, S. Yoshimoto, K. Mukai, H. Yamane, N. Kosugi, J. Yoshinobu, T. Ozaki, and Y. Yamada-Takamura, "Emergence of nearly flat bands through a kagome lattice embedded in an epitaxial two-dimensional Ge layer with a bitriangular structure", Phys. Rev. B 102, 201102(R)-1-6 (2020). https://doi.org/10.1103/PhysRevB.102.201102
K. Tanaka, T. Hoshi, I. Mochizuki, T. Hanada, A. Ichimiya, and T. Hyodo, "Development of Data-Analysis Software for Total-Reflection High-Energy Positron Diffraction (TRHEPD)", Acta Physica Polonica A 137, 188-192 (2020). https://doi.org/10.12693/APhysPolA.137.188
Y. Fukaya, A. Kawasuso, A. Ichimiya and T. Hyodo, "Total-reflection high-energy positron diffraction (TRHEPD) for structure determination of the topmost- and immediate sub-surface atomic layers" J. Phys. D: Appl. Phys. 52, 013002-1-19 (2019). https://doi.org/10.1088/1361-6463/aadf14
Y. Fukaya, M. Maekawa, A. Kawasuso,I. Mochizuki, K. Wada, T. Shidara, A. Ichimiya, and T. Hyodo, "Total-reflection high-energy positron diffraction: An ideal diffraction technique for surface structure analysis", Appl. Phys. Express 7, 056601-1-4 (2014). https://doi.org/10.7567/APEX.7.056601 → Press release (in Japanese)(2014.4.21)
T. Hyodo, Y. Fukaya, M. Maekawa, I. Mochizuki, K. Wada, T. Shidara, A. Ichimiya, and A. Kawasuso, "Total reflection high-energy positron diffraction (TRHEPD)", J. Phys.: Conf. Ser. 505, 012001-1-5 (2014). https://doi.org/10.1088/1742-6596/505/1/012001
Y. Fukaya, M. Maekawa, I. Mochizuki, K. Wada, T. Hyodo, and A. Kawasuso, "Reflection high-energy positron diffraction study on the first surface layer", J. Phys. Conf. Ser. 505, 012005-1-6 (2014). https://doi.org/10.1088/1742-6596/505/1/012005
Y. Fukaya, M. Maekawa, Mochizuki, K. Wada, T. Hyodo, and A. Kawasuso, "Reflection high-energy positron diffraction: the past 15 years and the future", J. Phys.: Conf. Ser. 443, 012068 (2013). https://doi.org/10.1088/1742-6596/443/1/012068
I. Mochizuki, Y. Fukaya, A. Kawasuso, K. Yaji, A. Harasawa, I. Matsuda, K. Wada, T. Hyodo, "Atomic configuration and phase transition of Pt-induced nanowires on a Ge(001) surface studied using scanning tunneling microscopy, reflection high-energy positron diffraction, and angle-resolved photoemission spectroscopy", Phys. Rev. B 85, 245438 (2012). https://doi.org/10.1103/PhysRevB.85.245438
K. Wada, T. Shirasawa, I. Mochizuki, M. Fujinami, T. Takahashi, M. Maekawa, A. Kawasuso, M. Kimura, and T. Hyodo, "Progress report on construction of a low-energy positron diffraction (LEPD) experiment station at KEK", JJAP Conf. Proc. 7, 011301-1-6 (2019). https://doi.org/10.7567/JJAPCP.7.011301
K. Wada, T. Shirasawa, I. Mochizuki, M. Fujinami, M. Maekawa and A. Kawasuso, "Observation of Low-Energy Positron Diffraction Patterns with a Linac-Based Slow-Positron Beam", e-J. Surf. Sci. Nanotech. 16, 313-319 (2018). https://doi.org/10.1380/ejssnt.2018.313
K. Shu, K. Yamada, K. Hashidate, A. Ishida, T. Namba, S. Asai, M. Kuwata-Gonokami, Y. Tajima, E. Chae, K. Yoshioka, N. Oshima, B. E. O'Rourke, K. Michishio, K. Ito, K. Kumagai, R. Suzuki, S. Fujino, T. Hyodo, I. Mochizuki, K. Wada and T. Kai, "Development of a porous silica cavity for laser excitation of confined positronium", JJAP Conf. Proc. 9, 011202 (2023). https://doi.org/10.56646/jjapcp.9.0_011202
K. Michishio, S. Kuma, Y. Nagata, L. Chiari, T. Iizuka, R. Mikami, T. Azuma, and Y. Nagashima, "Threshold Photodetachment Spectroscopy of the Positronium Negative Ion", Phys. Rev. Lett 125, 063001-1-6 (2020). https://doi.org/10.1103/PhysRevLett.125.063001
Y. Nagata, K. Michishio, T. Iizuka, H. Kikutani, L. Chiari, F. Tanaka, and Y. Nagashima, "Motion-Induced Transition of Positronium through a Static Periodic Magnetic Field in the Sub-THz Region", Phys. Rev. Lett 124, 173202-1-6 (2020). https://doi.org/10.1103/PhysRevLett.124.173202
K. Michishio, R.H. Suzuki, K.Wada, I. Mochizuki, T. Hyodo, A.Yagishita and Y. Nagashima, "Profiles of a positronium beam produced using the photodetachment of positronium negative ions", Nucl. Instrum. Meth. Phys. Res. A 785, 5-8 (2015). https://doi.org/10.1016/j.nima.2015.02.042
Y. Nagashima, K. Michishio, H. Terabe, R. H. Suzuki, S. Iida, T. Yamashita, R. Kimura, T. Tachibana, I. Mochizuki, K. Wada, A. Yagishita, and T. Hyodo, "Positronium and positronium negative ion emission from alkali-metal coated tungsten surfaces", J. Phys.: Conf. Ser. 505, 012037-1-6 (2014). https://doi.org/10.1088/1742-6596/505/1/012037
K. Michishio, T. Tachibana, R.H. Suzuki, K. Wada, A. Yagishita, T. Hyodo、 Y. Nagashima, "An energy-tunable positronium beam produced using the photodetachment of the positronium negative ion", Appl. Phys. Lett. 100, 254102-1-4 (2012). https://doi.org/10.1063/1.4729867 → Press release (in Japanese)(2012.6.20)
Y. Nagashima1, K. Michishio, T. Tachibana and H. Terabe, "Towards the production of an energy-tunable positronium beam using Ps- photodetachment technique", J. Phys.: Conf. Ser. 262, 012041-1-4 (2011). https://doi.org/10.1088/1742-6596/262/1/012041
T. Tachibana, K. Michisho, H. Terabe, K. Wada, T. Hyodo, T. Kurihara, A. Yagishita and Y. Nagashima, "Production of Positronium Negative Ions Using a Pulsed Low-energy Positron Beam at the KEK-PF Slow Positron Facility", Nucl. Instrum. Methods A 621, 670 (2010). https://doi.org/10.1016/j.nima.2010.04.018
A. Kawasuso, M. Maekawa, A. Miyashita, K. Wada, Y Nagashima, and A. Ishida, "Positronium emission from GaN(0001) and AlN(0001) surfaces", J. Phys. B: At. Mol. Opt. Phys. 54, 205202 (2021). https://doi.org/10.1088/1361-6455/ac32a0
A. Kawasuso, K. Wada, A. Miyashita, M. Maekawa, H. Iwamori, S. Iida and Y. Nagashima, "Positronium formation at 4H SiC(0001) surfaces" J. Phys.: Condens. Matter 33, 035006-1-7 (2021). https://doi.org/10.1088/1361-648X/abbe7a
A. Kawasuso, M. Maekawa, A. Miyashita, K. Wada, T. Kaiwa, and Y. Nagashima, "Positronium formation at Si surfaces", Phys. Rev. B 97, 245303-1-8 (2018).
https://doi.org/10.1103/PhysRevB.97.245303
S. Iida, K Wada, I Mochizuki, T Tachibana, T Yamashita, T Hyodo, Y Nagashima, "Emission of low-energy positronium from alkali-metal coated single-crystal tungsten surfaces", J. Phys.: Condens. Matter 28, 475002-1-4 (2016). https://doi.org/10.1088/0953-8984/28/47/475002
H. Terabe, S. Iida, T. Yamashita, T. Tachibana, B. Barbiellini, K. Wada, I. Mochizuki, A. Yagishita, T. Hyodo, Y. Nagashima , "Increase in the positronium emission yield from polycrystalline tungsten surfaces by sodium coating", Surface Science 641, 68 (2015). https://doi.org/10.1016/j.susc.2015.05.012
H. Terabe, S. Iida, K. Wada, T. Hyodo, A Yagishita, and Y. Nagashima, "Efficient emission of positronium atoms from an Na-coated polycrystalline tungsten surface", J. Phy.: Conf. Ser. 443, 012075 (2013). https://doi.org/10.1088/1742-6596/443/1/012075
M. Matsuya, S. Jinno, T. Ootsuka, M. Inoue, T. Kurihara, M. Doyama, M. Inoue and M. Fujinami, "Development of a transmission positron microscope", Nucl. Instrum. Methods, A 645, 102 (2011). https://doi.org/10.1016/j.nima.2010.12.228
A. Uedono, K. Ito, H. Nakamori, S. Ata, T. Ougizawa, K. Ito, Y. Kobayashi, X. Cao, T. Kurihara, N. Oshima, T. Ohdaira, R. Suzuki, T. Akahane, M. Doyama, K. Matsuya, S. Jinno and M. Fujinami, "Annihilation characteristics of positrons in free-standing thin metal and polymer films", Nucl. Instrum. Meth B, 266, 750 (2008). https://doi.org/10.1016/j.nimb.2007.12.104
M. Doyama, A. Kogure, M. Inoue, T. Kurihara, X. Cao, M. Matsuya, T. Yoshiie, Y. Hayashi, Q. Xu and M. Fujinami, "Transmission positron images using imaging plates", Appl. Surf. Sci. 255, 89 (2008). https://doi.org/10.1016/j.apsusc.2008.05.230
M. Doyama, Y. Kogure, M. Inoue1, T. Kurihara, M. Matsuya, K. Tsuno, T. Yoshiie, and M. Fujinami, "Transmission positron images and microscopes", Phys. Stat. Sol. (c) 4, 3977 (2007). https://doi.org/10.1002/pssc.200675797
K. Wada, M. Maekawa, I. Mochizuki, T. Shidara, A. Kawasuso, M. Kimura, T. Hyodo, "A pulse stretcher for a LINAC-based pulsed slow-positron beam providing a quasi-continuous beam with an energy of 5.2 keV", Nuclear Inst. and Methods in Physics Research, A 975, 164161-1-7 (2020). https://doi.org/10.1016/j.nima.2020.164161
T. Hyodo, I. Mochizuki, K. Wada, N. Toge, T. Shidara, "Slow positron applications at Slow Positron Facility of Institute of Materials Structure Science, KEK", AIP Conference Proceedings 1970, 040004-1-10 (2018). https://doi.org/10.1063/1.5040216
T. Hyodo, K. Wada, I. Mochizuki, M. Kimura1, N. Toge, T. Shidara, Y. Fukaya, M. Maekawa, A. Kawasuso, S. Iida, K. Michishio, Y. Nagashima, "Research progress at the Slow Positron Facility in the Institute of Materials Structure Science, KEK" J. Phys.: Conf. Ser. 791 (2017) 012003-1-8. https://doi.org/10.1088/1742-6596/791/1/012003
M. Maekawa, K. Wada, Y. Fukaya, A. Kawasuso, I. Mochizuki, T. Shidara, and T. Hyodo, "Brightness enhancement of a linac-based intense positron beam for total-reflection high-energy positron diffraction (TRHEPD)", Eur. Phys. J. D 68,165-1-6 (2014). https://doi.org/10.1140/epjd/e2014-40802-7
K. Wada, T. Hyodo, T. Kosuge, Y. Saito, M. Ikeda, S. Ohsawa, T. Shidara, K. Michishio, T. Tachibana, H. Terabe, R. H. Suzuki, Y. Nagashima, Y. Fukaya, M. Maekawa, I. Mochizuki, and A. Kawasuso, "New experiment stations at KEK Slow Positron Facility", J. Phys.: Conf. Ser. 443, 012082-1-6 (2013). https://doi.org/10.1088/1742-6596/443/1/012082
K. Wada, T. Hyodo, A. Yagishita, S. Ikeda. T. Ohsawa, T. Shidara,. MichishioT. TachibanaY. NagashimaY. FukayaM. MaekawaA. Kawasuso, "Increase in the beam intensity of the linac-based slow positron beam and its application at the Slow Positron Facility, KEK", Eur. Phys. J. D 66, 37-1-4 (2012). https://doi.org/10.1140/epjd/e2012-20641-4
T Hyodo, K Wada, A Yagishita, T Kosuge, Y Saito, T Kurihara, T Kikuchi, A Shirakawa, T Sanami, M Ikeda, S Ohsawa, K Kakihara and T Shidara, "KEK-IMSS Slow Positron Facility", J. Phys. Conf. Ser. 262, 012026-1-5 (2011). https://doi.org/10.1088/1742-6596/262/1/012026
M. Maekawa, K. Wada, A. Kawasuso, "Development of a new positron source for spin-polarized positron beam generation", Nucl. Inst. Meth. Phys. Res. B 480, 49-55 (2020).
K. Yaji, S. Kim, I. Mochizuki, Y. Takeichi, Y. Ohtsubo, P. Le Fèvre, F. Bertran, A. Taleb-Ibrahimi, S. Shin and F. Komori, "One-dimensional metallic surface states of Pt-induced atomic nanowires on Ge (001)", J. Phys.: Condens. Matter 28, 284001-1-9 (2016).
F. Saito, T. Yotoriyama, I. Nishiyama, Y. Suzuki, A.Goto, Y. Nagashima and T. Hyodo, "Characterization of ion-irradiated poly-L-lactic acid using nano-cutting", Phys. Chem. Chem. Phys. 16, 26991 (2014).
K. Shibuya, T. Nakayama, H. Saito, and T. Hyodo, "Spin conversion and pick-off annihilation of ortho-positronium in gaseous xenon at elevated temperatures", Phys. Rev. A 88, 012511 (2013).
K. Wada and T. Hyodo, "A simple shape-free model for pore-size estimation with positron annihilation lifetime spectroscopy", J. Phys.: Conf. Ser. 443 012003 (2013).
K. Wada and T. Hyodo, "A simple shape-free model for pore-size estimation with positron annihilation lifetime spectroscopy", J. Phys.: Conf. Ser. 443 012003 (2013).
K. Wada, F. Saito, N. Shinohara, and T. Hyodo, "Pick-off quenching probability of ortho-positronium per collision with atoms and molecules", Eur. Phys. J. D, 66, 108 (2012).
K. Inoue, N. Suzuki, T. Hyodo, et al. "Delocalized positronium in BaF2", J. Phys. Soc. Jpn. 80, 054709 (2011).
K. Wada, F. Saito, and T. Hyodo, "Orthopositronium annihilation rates in gaseous halogenated methanes", Phys. Rev. A 81, 062719- (2010).
F. Saito, I. Nishiyama and T. Hyodo, "Cutting strength - A new indicator for the mechanical strength of materials", Mater. Lett. 66, 114 (2012).
F. Saito, Y. Nishiyama and T. Hyodo, "An improved method for the measurement of adhesion energy by using a nano-cutting machine", Surf. Coat. Tech. 205, 419 (2010).
