Speaker
Mr
Alexey Dik
(Lebedev Physical Institute of Russian Academy of Science)
Description
Recent theoretical studies have shown the possibility of charged particles channeling at their interaction with inhomogeneous laser field, particularly with so-called optical lattices, similar to crystal channeling. Till present we have not yet been related to careful experimental investigations in this field, however, the results on electron diffraction by the light standing wave [1] have demonstrated the feasibility of such a process.
As known due to the periodicity of the effective interaction potential [2] for charged particles in a crystal at channeling, the energy spectrum of channeled particles might reveal a zone structure at well defined conditions. One may expect similar feature at particles channeling in optical lattices but with one very strong difference, i.e., optical lattices are characterized by much wider channel sizes. It results in the use of a single potential approximation without taking into account the potential periodicity [3] and of a classical approximation for a channeled particle as well [4,5].
On the contrary to crystals where the bandwidths of quantum levels are mainly defined by inelastic scattering processes, in optical lattices for light particles the broadening of energy levels takes place because of the life time limit defined by spontaneous radiation. The same is valid for muons in much strong laser fields.
In this report we are going to present our results on zone structure of energy levels for channeled particles in optical lattices, in general.
[1] Kapitza P.L., Dirac P.A.M., "The reflection of electrons from standing light waves", Math. Proc. Cambridge, V. 29, 1933.
[2] Donald S. Gemmell, "Channeling and related effects in the motion of charged particles through crystals", Reviews of Modern Physics, V. 46, 1974.
[3] Dik A.V., Frolov E.N., Dabagov S.B., "On a quantum particle in laser channels", Journal of Instrumentation, V. 13, 2018.
[4] Andreev A.V., Akhmanov S.A., "Interaction of relativistic particles with intense interference optical fields", Zh. Eksp. Teor. Fiz., V. 72, 1991.
[5] Dabagov S.B., Dik A.V., Frolov E.N., "Channeling of electrons in a crossed laser field", Phys. Rev. ST, V. 18, 2015.
Primary author
Mr
Alexey Dik
(Lebedev Physical Institute of Russian Academy of Science)
Co-authors
Mr
Evgenii Frolov
(LPI RAS and NR TPU)
Prof.
Sultan Dabagov
(LNF)
