Title :
Sub-THz spectroscopy of the ground state hyperfine splitting of positronium
Author :
Yamazaki, Tsutomu ; Miyazaki, A. ; Namba, T. ; Asai, Satoshi ; Kobayashi, Takehiko ; Suehara, T. ; Tatematsu, Y. ; Ogawa, Isamu ; Ideharac, T.
Author_Institution :
Dept. of Phys., Univ. of Tokyo, Tokyo, Japan
Abstract :
We plan to directly measure the hyperfine structure of the ground-state positronium. The hyperfine structure between ortho-positronium and para-positronium is about 203 GHz. We develop a new optical system to accumulate about 20 kW power using a gyrotron and high finesse Fabry-Pérot resonator. We report the current status of our experiment.
Keywords :
ground states; hyperfine structure; positronium; terahertz wave spectra; frequency 203 GHz; ground state hyperfine splitting; ground-state positronium; gyrotron; high finesse Fabry-Perot resonator; hyperfine structure; optical system; orthopositronium; parapositronium; power 20 kW; subTHz spectroscopy; Educational institutions; Frequency measurement; Gamma-rays; Gyrotrons; Magnetic field measurement; Optical resonators; Stationary state;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2013 38th International Conference on
Conference_Location :
Mainz
DOI :
10.1109/IRMMW-THz.2013.6665918
