Results 181 to 190 of about 6,954 (226)
Some of the next articles are maybe not open access.
Radiative Rydberg-atom–Rydberg-atom collisions in the strong-field regime
Physical Review A, 1987We describe the experimental observation of the resonant collisional energy transfer Na(ns)+Na(ns)+qh\ensuremath{\nu}\ensuremath{\rightarrow}Na(np)+Na[(n-1)p]+(q○)h\ensuremath{\nu} which occurs when the Na atoms in a strong microwave field are tuned in energy with a static field so that the energy resonance ${E}_{\mathrm{ns}}$+${E}_{\mathrm{ns}}$=${E}_{
, Pillet +4 more
openaire +2 more sources
Strong autoresonance excitation of Rydberg atoms: The Rydberg accelerator
Physical Review A, 1990A classical mechanism is proposed for the many-photon ionization of Rydberg atoms in a quasimonochromatic oscillating electric field with an amplitude smaller than the stochasticity threshold. The mechanism is based on the dynamic autoresonance between the slowly varying frequency of the oscillating field and the Keplerian frequency (or one of its ...
, Meerson, , Friedland
openaire +2 more sources
Rydberg-atom-Rydberg-atom ionisation cross sections
Journal of Physics B: Atomic and Molecular Physics, 1979A four-body classical-trajectory Monte Carlo method has been applied to Rydberg-atom-Rydberg-atom scattering problems. Numerical calculations were conducted over the velocity range ve/3 to 3v2 where v2(au)=1/n and n is the principal quantum number of the Rydberg atom.
openaire +1 more source
1994
In recent years, Rydberg atoms have been the subject of intense study, becoming the testing ground for several quantum mechanical problems. This book provides a comprehensive description of the physics of Rydberg atoms, highlighting their remarkable properties by reference to their behaviour in a wide range of physical situations. Following an overview
openaire +1 more source
In recent years, Rydberg atoms have been the subject of intense study, becoming the testing ground for several quantum mechanical problems. This book provides a comprehensive description of the physics of Rydberg atoms, highlighting their remarkable properties by reference to their behaviour in a wide range of physical situations. Following an overview
openaire +1 more source
1982
Publisher Summary This chapter is devoted to the production and detection of Rydberg states; every experiment starts and ends with these processes. The main results of spectroscopic studies are analyzed and a strong emphasis is placed on the effects of external fields as this is probably the domain where the most interesting and sometimes surprising ...
Serge Feneuille, Pierre Jacquinot
openaire +1 more source
Publisher Summary This chapter is devoted to the production and detection of Rydberg states; every experiment starts and ends with these processes. The main results of spectroscopic studies are analyzed and a strong emphasis is placed on the effects of external fields as this is probably the domain where the most interesting and sometimes surprising ...
Serge Feneuille, Pierre Jacquinot
openaire +1 more source
Rydberg Atoms in Curved Space-Time
Physical Review Letters, 1993The possible use of loosely bound Rydberg atoms for remote gravimetric measurements is explored. The first-order corrections to the nonrelativistic nS and nP states for ng2 are obtained for the first time. A procedure to evaluate corrections of any order is outlined and applied to the 1S state in a spherical symmetry.
openaire +2 more sources
Journal of Modern Optics, 1987
Abstract It is shown that some 17 Rydberg Na atoms initially placed into a coherent atomic state and super-radiating into a low-Q microwave cavity at temperatures T ≲ 0·4 K will show modest squeezing in the fluorescence field, the squeezing arising from terms oscillating at twice the cavity frequency.
M.R.B. Wahiddin +2 more
openaire +1 more source
Abstract It is shown that some 17 Rydberg Na atoms initially placed into a coherent atomic state and super-radiating into a low-Q microwave cavity at temperatures T ≲ 0·4 K will show modest squeezing in the fluorescence field, the squeezing arising from terms oscillating at twice the cavity frequency.
M.R.B. Wahiddin +2 more
openaire +1 more source
Measurement of the Rydberg Constant with Trapped Rydberg Atoms
2018 Conference on Precision Electromagnetic Measurements (CPEM 2018), 2018A measurement of the Rydberg constant using cold circular Rydberg atoms is proposed. Since these atoms have long lifetimes, negligible quantum electrodynamics and no nuclear-overlap corrections, the measurement can shed new light on the “proton radius puzzle”. The atoms are trapped in an optical lattice.
Georg Raithel +3 more
openaire +1 more source
2007
Abstract We employ ensembles of cold Rydberg-atom gases produced via photo-excitation of laser-cooled atom clouds in order to investigate collision-induced dynamics, excitation blockades, and Rydberg-atom trapping. After a general description of typical experimental methods used in this research, we review state-mixing and ionizing collision ...
J.-H. Choi +4 more
openaire +1 more source
Abstract We employ ensembles of cold Rydberg-atom gases produced via photo-excitation of laser-cooled atom clouds in order to investigate collision-induced dynamics, excitation blockades, and Rydberg-atom trapping. After a general description of typical experimental methods used in this research, we review state-mixing and ionizing collision ...
J.-H. Choi +4 more
openaire +1 more source
2005
Recent developments in experimental technique allow study of the ionization and excitation of Rydberg atoms by pulsed unidirectional electric fields, termed half-cycle pulses (HCPs), with duration T p ≪ T n , where T n is the classical electron orbital period.
F.B. Dunning +4 more
openaire +1 more source
Recent developments in experimental technique allow study of the ionization and excitation of Rydberg atoms by pulsed unidirectional electric fields, termed half-cycle pulses (HCPs), with duration T p ≪ T n , where T n is the classical electron orbital period.
F.B. Dunning +4 more
openaire +1 more source