منابع مشابه
Positronium hyperfine interval measured via saturated absorption spectroscopy.
We report Doppler-free measurements of the positronium (Ps) Lyman-α transition using saturated absorption spectroscopy. In addition to a Lamb dip at wavelength λ(L) = 243.0218 ± 0.0005 nm, we also observed a crossover resonance at λ(C) = 243.0035 ± 0.0005 nm, arising from the excitation of 1(3)S(1) atoms to Zeeman mixed 2P states, followed by stimulated emission to the 1(1)S(0) ground state. Si...
متن کاملOrder α ln(1/α) Contribution to Positronium Hyperfine Splitting
The logarithmically enhanced α ln(1/α) contribution to the hyperfine splitting of the positronium ground-state energy levels is calculated in the framework of dimensionally regularized nonrelativistic quantum electrodynamics. The correction is negative and amounts to about 1/3 of the leading logarithmic α ln(1/α) one. The discrepancy between the experimental measurements and the theoretical pre...
متن کاملPositronium hyperfine splitting: analytical value at O(mα6)
We present an analytic calculation of the O(mα6) recoil corrections to the hyperfine splitting (HFS) of the ground state energy levels in positronium. We find ∆Erec = mα 6 ( − 6 lnα+ 331 432 − ln 2 4 − 17ζ(3) 8π + 5 12π )
متن کاملMolecular Structure of Water-Like Positronium Complexes
It is well known that positrons can live long enough to form complexes with atoms. The theoretical study of these complexes is important to interpret experimental data from both positron scattering by atoms and molecules and positron annihilation spectroscopy. There are typically two different kinds of positron complexes. In one of them a positron attaches to a neutral or ionic atom or molecule...
متن کاملHyperfine splitting in positronium to O(αme): one-photon annihilation contribution
M. Baker, P. Marquard, A.A. Penin, 3 J. Piclum, 5 and M. Steinhauser Department of Physics, University of Alberta, Edmonton, Alberta T6G 2J1, Canada Deutsches Elektronen Synchrotron DESY, Platanenallee 6, 15738 Zeuthen, Germany Institut für Theoretische Teilchenphysik, Karlsruhe Institute of Technology, 76128 Karlsruhe, Germany Physik Department, Technische Universität München, 85748 Garching, ...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 1971
ISSN: 0556-2791
DOI: 10.1103/physreva.4.1802