Title :
Gyrotrons FU CW V and FU CW VIII for measurement of hyperfine structure of positronium
Author :
Urushizaki, Y. ; Idehara, T. ; Ogawa, I. ; Ikeda, R. ; Sabchevski, S. ; Asai, S. ; Suehara, T. ; Miyazaki, A. ; Yamazaki, T. ; Kobayashi, T.
Author_Institution :
Res. Center for Dev. of Far infrared region, Univ. of Fukui (FIR FU), Fukui, Japan
Abstract :
For direct measurement on hyperfine structure of positronium, high power sub-THz radiation sources, Gyrotrons FU CW V and FU CW VIII have been developed. FU CW V is a frequency fixed gyrotron operating at 203.3 GHz for the proof-of-principle experiment and FU CW VIII a frequency continuously tunable gyrotron to measure directly the energy difference between orth- and para states of positronium.
Keywords :
energy measurement; gyrotrons; hyperfine structure; millimetre wave measurement; positronium; spatial variables measurement; energy difference measurement; frequency 203.3 GHz; frequency continuously tunable gyrotron; frequency fixed gyrotron; gyrotron FU CW V; gyrotron FU CW VIII; high power subTHz radiation source; hyperfine structure measurement; positronium; proof-of-principle experiment; Cavity resonators; Energy measurement; Frequency measurement; Gyrotrons; Magnetic field measurement; Positrons; Power measurement;
Conference_Titel :
Infrared Millimeter and Terahertz Waves (IRMMW-THz), 2010 35th International Conference on
Conference_Location :
Rome
Print_ISBN :
978-1-4244-6655-9
DOI :
10.1109/ICIMW.2010.5612554
