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11 papers · 2 filters
Calculation of parity and time invariance violation in the radium atom
V. A. Dzuba, V. V. Flambaum, J. S. M. Ginges
Parity (P) and time (T) invariance violating effects in the Ra atom are strongly enhanced due to close states of opposite parity, the large nuclear charge Z and the collective natu…
Mechanisms of positron annihilation on molecules
G. F. Gribakin
The aim of this work is to identify the mechanisms responsible for very large rates and other peculiarities observed in low-energy positron annihilation on molecules. The two mecha…
Multiphoton radiative recombination of electron assisted by laser field
M. Yu. Kuchiev, V. N. Ostrovsky
In the presence of an intensive laser field the radiative recombination of the continuum electron into an atomic bound state generally is accompanied by absorption or emission of s…
Three-photon detachment of electrons from the fluorine negative ion
G. F. Gribakin, V. K. Ivanov, A . V. Korol +1
Absolute three-photon detachment cross sections are calculated for the fluorine negative ion within the lowest-order perturbation theory. The Dyson equation of the atomic many-body…
Atomic optical clocks and search for variation of the fine structure constant
V. A. Dzuba, V. V. Flambaum.
Theories unifying gravity and other interactions suggest the possibility of spatial and temporal variation of physical ``constants''. Accuracy achieved for the atomic optical frequ…
Quantum theory of a high harmonic generation as a three-step process
M. Yu. Kuchiev, V. N. Ostrovsky
Fully quantum treatment explicitly presents the high harmonic generation as a three-step process: (i) above threshold ionization (ATI) is followed by (ii) electron propagation in a…