Journal ArticleDOI
Stark Effect in Rapidly Varying Fields
S. H. Autler,Charles H. Townes +1 more
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In this article, a method is developed for calculating the effects of a strong oscillating field on two states of a quantum-mechanical system which are connected by a matrix element of the field.Abstract:
A method is developed for calculating the effects of a strong oscillating field on two states of a quantum-mechanical system which are connected by a matrix element of the field. Explicit approximate solutions are obtained for a variety of special cases, and the results of numerical computations are given for others. The effect of an rf field on the $J=2\ensuremath{\rightarrow}1$ $l$-type doublet microwave absorption lines of OCS has been studied in particular both experimentally and theoretically. Each line was observed to split into two components when the frequency of the rf field was near 12.78 Mc or 38.28 Mc, which are the frequencies separating the $J=1$ and $J=2$ pairs of levels, respectively. By measuring the rf frequency, ${\ensuremath{\nu}}_{0}$, at which the microwave lines are split into two equally intense components, one may determine the separation between the energy levels. The measured value of ${\ensuremath{\nu}}_{0}$ depends upon the intensity of the rf field and the form of this dependence has been calculated and found to be in good agreement with the experimental results.read more
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Journal ArticleDOI
Photoionization electron spectra in a system interacting with a neighboring atom
TL;DR: In this article, photoelectron ionization spectra of a system interacting with a neighbor two-level atom are investigated using the Laplace transform method, and the presence of spectral zeros occurring periodically with the Rabi period is predicted.
Book ChapterDOI
Degenerate Quantum Gases of Strontium
Journal ArticleDOI
Computation of multiphoton IR spectra of small molecules: application to CO
Jv Moloney,Farhard Faisal +1 more
TL;DR: In this paper, a nonperturbative theoretical method has been generalised to compute rovibrational multiphoton excitation probabilities in small molecules, and the practicability of the method is illustrated by direct computation for CO.
Journal ArticleDOI
Nuclear Magnetic Double Resonance Spectra of Three Spin Systems
TL;DR: In this paper, the nuclear magnetic double resonance spectra of general three-spin systems are analyzed in detail by using a Hamiltonian that is made stationary by transformation to a rotating coordinate system, and by diagonalization of the complete Hamiltonian in the rotating frame.