We report on the first measurement of the Breit-Wigner resonance of the transition from orthopositronium to para-positronium. We have developed an optical system to accumulate a power of over 20 kW using a frequency-tunable gyrotron and a Fabry-Prot cavity. This system opens a new era of millimeter-wave spectroscopy, and enables us to directly determine both the hyperfine interval and the decay width of para-Ps.
No takes yet. Share an insight, caveat, or question.
A 2015 study studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: