| Observation of the 1S–2S transition in trapped antihydrogen M Ahmadi, BXR Alves, CJ Baker, W Bertsche, E Butler, A Capra, ... Nature 541 (7638), 506-510, 2017 | 214 | 2017 |
| Observation of the hyperfine spectrum of antihydrogen M Ahmadi, BXR Alves, CJ Baker, W Bertsche, E Butler, A Capra, ... Nature 548 (7665), 66-69, 2017 | 170 | 2017 |
| Antihydrogen accumulation for fundamental symmetry tests M Ahmadi, BXR Alves, CJ Baker, W Bertsche, E Butler, A Capra, ... Nature communications 8 (1), 681, 2017 | 100 | 2017 |
| New precision measurement of hyperfine splitting of positronium A Ishida, T Namba, S Asai, T Kobayashi, H Saito, M Yoshida, K Tanaka, ... Physics Letters B 734, 338-344, 2014 | 83 | 2014 |
| An improved limit on the charge of antihydrogen from stochastic acceleration M Ahmadi, M Baquero-Ruiz, W Bertsche, E Butler, A Capra, C Carruth, ... Nature 529 (7586), 373-376, 2016 | 78 | 2016 |
| Measurement of positronium hyperfine splitting with quantum oscillation Y Sasaki, A Miyazaki, A Ishida, T Namba, S Asai, T Kobayashi, H Saito, ... Physics Letters B 697 (2), 121-126, 2011 | 24 | 2011 |
| Precision measurements of positronium decay rate and energy level S Asai, Y Kataoka, T Kobayashi, T Namba, T Suehara, G Akimoto, ... AIP Conference Proceedings 1037 (1), 43-55, 2008 | 14 | 2008 |
| Accumulation of LINAC based low energy positrons in a buffer gas trap H Higaki, K Michishio, K Hashidate, A Ishida, N Oshima Applied Physics Express 13 (6), 066003, 2020 | 11 | 2020 |
| Study on Bose-Einstein condensation of positronium K Shu, T Murayoshi, X Fan, A Ishida, T Yamazaki, T Namba, S Asai, ... Journal of Physics: Conference Series 791 (1), 012007, 2017 | 11 | 2017 |
| Precise measurement of positronium hyperfine splitting using the Zeeman effect A Ishida, Y Sasaki, G Akimoto, T Suehara, T Namba, S Asai, T Kobayashi, ... Hyperfine Interactions 212, 133-140, 2012 | 10 | 2012 |
| Observation of orthopositronium thermalization in silica aerogel at cryogenic temperatures K Shu, A Ishida, T Namba, S Asai, N Oshima, BE O'Rourke, K Ito Physical Review A 104 (5), L050801, 2021 | 9 | 2021 |
| New precise measurement of the hyperfine splitting of positronium A Ishida Journal of Physical and Chemical Reference Data 44 (3), 2015 | 8 | 2015 |
| Probing the energy structure of positronium with a 203 GHz Fabry-Perot Cavity T Suehara, A Miyazaki, A Ishida, T Namba, S Asai, T Kobayashi, H Saito, ... Journal of Physics: Conference Series 199 (1), 012002, 2010 | 8 | 2010 |
| Theoretical analysis and experimental demonstration of a chirped pulse-train generator and its potential for efficient cooling of positronium K Yamada, Y Tajima, T Murayoshi, X Fan, A Ishida, T Namba, S Asai, ... Physical Review Applied 16 (1), 014009, 2021 | 7 | 2021 |
| Experiment for the first direct measurement of the hyperfine splitting of positronium A Miyazaki, T Suehara, A Ishida, T Namba, S Asai, T Kobayashi, H Saito, ... Journal of Physics: Conference Series 225 (1), 012037, 2010 | 7 | 2010 |
| Study on positronium Bose–Einstein condensation A Ishida, K Shu, T Murayoshi, X Fan, T Namba, S Asai, K Yoshioka, ... JJAP Conference Proceedings 3rd China-Japan Joint Workshop on Positron …, 2018 | 5 | 2018 |
| Measurement of positronium thermalization in isobutane gas for precision measurement of ground-state hyperfine splitting A Ishida, T Namba, S Asai Journal of Physics B: Atomic, Molecular and Optical Physics 49 (6), 064008, 2016 | 4 | 2016 |
| Precise measurement of the HFS of positronium using the zeeman effect I: Experimental set-up and RF system G Akimoto, A Ishida, Y Sasaki, A Miyazaki, K Kato, T Suehara, T Namba, ... Journal of Physics: Conference Series 225 (1), 012001, 2010 | 3 | 2010 |
| Precise measurement of HFS of positronium using Zeeman effect A Ishida, G Akimoto, Y Sasaki, A Miyazaki, K Kato, T Suehara, T Namba, ... Journal of Physics: Conference Series 225 (1), 012019, 2010 | 3 | 2010 |
| Positronium emission from GaN (0001) and AlN (0001) surfaces A Kawasuso, M Maekawa, A Miyashita, K Wada, Y Nagashima, A Ishida Journal of Physics B: Atomic, Molecular and Optical Physics 54 (20), 205202, 2021 | 1 | 2021 |
