Slow Positron Facility

KEK

Publications

Total-Reflection High-Energy Positron Diffraction
  • Y. Endo, Y. Fukaya, I. Mochizuki, A. Takayama, T. Hyodo, S. Hasegawa, "Structure of superconducting Ca-intercalated bilayer Graphene/SiC studied using total-reflection high-energy positron diffraction" Carbon 157, 857-862 (2020) (Available online 25 October 2019).
    DOI: https://doi.org/10.1016/j.carbon.2019.10.070
  • 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).
  • Y. Fukaya, I. Matsuda, B. Feng, I. Mochizuki, T. Hyodo, S. Shamoto, "Asymmetric structure of germanene on an Al(111) surface studied by total-reflection high-energy positron diffraction" 2D Materials 3, 035019 (2016).
  • Y. Fukaya, S. Entani, S. Sakai, I. Mochizuki, K. Wada, T. Hyodo, S. Shamoto, "Spacing between graphene and metal substrates studied with total-reflection high-energy positron diffraction", Carbon, 103, 1, (2016), doi:10.1016/j.carbon.2016.03.006.
  • I. Mochizuki, H. Ariga, Y. Fukaya, K. Wada,M. Maekawa, A. Kawasuso, T. Shidara, K. Asakura, and T. Hyodo, "Structure determination of the rutile-TiO2(110)-(1 × 2) surface using total-reflection high-energy positron diffraction (TRHEPD)", Appl. Phys. Chem. Chem. Phys. 18, 7085 (2016).
  • 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).
  • 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).
  • 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).
  • Y. Fukaya, I. Mochizuki, M. Maekawa, K. Wada, T. Hyodo, I. Matsuda, and A. Kawasuso, "Structure of silicene on a Ag(111) surface studied by reflection high-energy positron diffraction" Phys. Rev. B 88, 205413-1-4 (2013).
  • 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).
  • I. Mochizuki, Y. Fukaya, A. Kawasuso, et al., "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).
Slow-Positron Diffraction (LEPD)
  • 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).
  • 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).
General-Purpose Station
  • K. Michishio, T. Kanai, S. Kuma, T. Azuma, Ken Wada, I. Mochizuki, T. Hyodo, A. Yagishita, Y. Nagashima, "Observation of a shape resonance of the positronium negative ion", Nature Communications 7, 11060 (2016) doi:10.1038/ncomms11060.
  • 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. Methods 785, 5 (2015).
  • 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).
  • K. Michishio, T. Tachibana, R.H. Suzuki, et al., "An energy-tunable positronium beam produced using the photodetachment of the positronium negative ion", Appl. Phys. Lett. 100, 254102 (2012).
  • K. Michishio, T. Tachibana, H. Terabe, et al., "Photodetachment of Positronium Negative Ions", Phys. Rev. Lett. 106, 153401 (2011).
  • Y. Nagashima, K. Michishio, T. Tachibana, et al., "Towards the production of an energy-tunable positronium beam using Ps- photodetachment technique", J. Phys.: Conf. Ser. 262, 012041 (2011).
  • T. Tachibana, K. Michishio, H. Terabe, et al., "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).
Positronium Time-of-Flight (Ps-TOF)
  • Takashi Yamashita, Shimpei Iida, Hiroki Terabe, Yasuyuki Nagashima, "Thermal positron interactions with alkali covered tungsten", NIMB (2016).
  • 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).
  • 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).
  • 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).
Transmission Positron Microscope
  • M. Matsuya, S. Jinno, T. Ootsuka, et al., "Development of a transmission positron microscope, Nucl. Instrum. Methods, A 645, 102 (2011).
  • T. Oka, S. jinno, and M. Fujinami, "Analytical methods using a positron microprobe", Anal. Sci. 25, 837 (2009).
  • A. Uedono, K. Ito, H. Nakamori, et al., "Annihilation characteristics of positrons in free-standing thin metal and polymer films", Nucl. Instrum. Meth B, 266, 750 (2008).
  • M. Doyama, A. Kogure, M. Inoue, et al., "Transmission positron images using imaging plates", Appl. Surf. Sci. 255, 89 (2008).
  • M. Doyama, Y. Kogure, M. Inoue, et al., "Transmission positron images and microscopes", Phys. Stat. Sol. (c) 4, 3977 (2007).
Beam Line
  • 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 (2014).
  • 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 (2013).
  • K. Wada, T. Hyodo, A. Yagishita, et al., "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 (2012).
  • T. Hyodo, K. Wada, A. Yagishita, et al., "KEK-IMSS Slow Positron Facility", J. Phys. Conf. Ser. 262, 012026 (2011).
Others
  • 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).