4 papers
Three-frequency helical undulator as a source of photons in composite twisted states
O. V. Bogdanov, S. V. Bragin, P. O. Kazinski +1
The properties of radiation from a three-frequency helical undulator are thoroughly investigated. It is shown that such undulators can be employed for generating photons in the so-…
Radiation of twisted photons in elliptical multifrequency undulators
O. V. Bogdanov, S. V. Bragin, P. O. Kazinski +1
The theory of radiation of twisted photons in elliptical multifrequency undulators is developed. It is shown that helical multifrequency undulators can be employed as a bright and…
Multipolar transitions excited by twisted photons in heavy quarkonia
P. S. Korolev, V. A. Ryakin
In this study, we investigate the excitation of multipole transitions in quarkonium systems by high-energy photons carrying orbital angular momentum. We derive explicit expressions…
Detection of twisted radiowaves with Rydberg atoms
P. O. Kazinski, P. S. Korolev, V. A. Ryakin
The dynamics of the outer electron in an alkali atom in the presence of structured electromagnetic waves is described. The interaction of the alkali Rydberg atom with twisted radio…