First millimeter-wave spectroscopy of ground-state positronium

Positronium hyperfine splitting at ordermα7: Light-by-light scattering in the two-photon-exchange channel

(2014) Gregory S. Adkins et al.   PHYSICAL REVIEW A

Hyperfine Splitting in Positronium toO(α7me): One Photon Annihilation Contribution

(2014) M. Baker et al.   PHYSICAL REVIEW LETTERS

New precision measurement of hyperfine splitting of positronium

(2014) A. Ishida et al.   PHYSICS LETTERS B

The Direct Spectroscopy of Positronium Hyperfine Structure Using a Sub-THz Gyrotron

(2013) Akira Miyazaki et al.   Journal of Infrared Millimeter and Terahertz Waves

Pick-off quenching probability of ortho-positronium per collision with atoms and molecules

(2012) K. Wada et al.   EUROPEAN PHYSICAL JOURNAL D

Development of a kW Level-200 GHz Gyrotron FU CW GI with an Internal Quasi-optical Mode Convertor

(2012) Yoshinori Tatematsu et al.   Journal of Infrared Millimeter and Terahertz Waves

Helium-cooling and -spinning dynamic nuclear polarization for sensitivity-enhanced solid-state NMR at 14T and 30K

(2012) Yoh Matsuki et al.   JOURNAL OF MAGNETIC RESONANCE

Direct Observation of the Hyperfine Transition of Ground-State Positronium

(2012) T. Yamazaki et al.   PHYSICAL REVIEW LETTERS

Positronium Hyperfine Interval Measured via Saturated Absorption Spectroscopy

(2012) D. B. Cassidy et al.   PHYSICAL REVIEW LETTERS

A spectrometer designed for 6.7 and 14.1T DNP-enhanced solid-state MAS NMR using quasi-optical microwave transmission

(2011) Kevin J. Pike et al.   JOURNAL OF MAGNETIC RESONANCE

Measurement of positronium hyperfine splitting with quantum oscillation

(2011) Y. Sasaki et al.   PHYSICS LETTERS B

Progress of high power 170 GHz gyrotron in JAEA

(2009) Keishi Sakamoto et al.   NUCLEAR FUSION

First test of O(α2) correction of the orthopositronium decay rate

(2008) Y. Kataoka et al.   PHYSICS LETTERS B