The Ps-HFS was first measured with a direct transition method. Measuring the Ps-HFS is difficult because the Ps-HFS is in the millimeter wave region and the Ps-HFS transition is suppressed by the finite lifetime of Ps.


Wave Radiation Resonance Cavity Finite Lifetime Gyrotron Oscillator Gyrotron Output 
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© Springer Japan 2015

Authors and Affiliations

  1. 1.Department of Physics, Graduate School of ScienceThe University of TokyoTokyoJapan

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