We report on the storage of orbital angular momenta (OAM) of light via the phenomenon of coherent population oscillation (CPO) in cold cesium atoms. The experiment is performed using a delayed four wave mixing configuration, where the transverse optical information of a probe field carrying OAM associated with its azimuthal phase dependence is stored in the CPO of Zeeman sublevels of the hyperf...

Cesium atoms in a vapor cell have been trapped and cooled by using light from laser diodes. The 6S F = 4, m = 0 6S F = 3, m = 0 hyperfine clock transition was excited as these atoms then fell 2.5 cm in darkness. We observed a linewidth of 8 Hz with good signal-to-noise ratio. This gave a short-term fractional frequency resolution of 6.5 X 101-2/s/ei, and there is potential for substantial impro...

Neurath, A. Robert (The Wistar Institute, Philadelphia, Pa.), Tadeusz J. Wiktor, and Hilary Koprowski. Density gradient centrifugation studies on rabies virus. J. Bacteriol. 92:102-106. 1966.-Cesium chloride density gradient centrifugation of rabies virus revealed a heterogeneous population of infectious virus particles, the majority of which showed a density of 1.20 g/ml. From results obtained...

A theory for fast modulation effects in cesium frequency s tandards has been developed and expressions derived for frequency offsets pxodtlced by Rabi and cavit,y pulling wi th square-wave phase modulation. These are compared wi th equivalent expressions for sine-wave phase modulation. Ratios of the amplitudes of the fseqnerlcy offsets in t h e two modulation schemes a re calculated for a ruoxl...

We present studies of strong coupling in single-photon photoassociation of cesium dimers using an optical dipole trap. A thermodynamic model of the trap depletion dynamics is employed to extract absolute rate coefficents. From the dependence of the rate coefficient on the photoassociation laser intensity, we observe saturation of the photoassociation scattering probability at the unitarity limi...

A novel method for the mono-N-alkylation of primary amines, diamines, and polyamines was developed using cesium bases in order to prepare secondary amines efficiently. A cesium base not only promoted alkylation of primary amines but also suppressed overalkylations of the produced secondary amines. Various amines, alkyl bromides, and alkyl sulfonates were examined, and the results demonstrated t...

Cesium is the heaviest stable alkali metal (with only one isotope – 133Cs) and it occurs mainly as a potassium-substituting cation. It an important trace element in rocks typical for Earth crust, its content biomass also relatively high compared to those abiogenic elements which are little soluble. Low-cost analytical methods like X-Ray Fluorescence inadequate quantify cesium natural samples, s...

We study quantum dynamical tunneling between two symmetry-related islands of stability in the phase space of a classically chaotic system. The setting for these experiments is the motion of carefully prepared samples of cesium atoms in an amplitude-modulated standing wave of light. We examine the dependence of the tunneling dynamics on the system parameters and indicate how the observed feature...

Atomic fountain clocks are emerging as an important new technology for the realization of extremely precise passive atomic standards. The U.S. Naval Observatory (USNO) has undertaken a project to develop atomic fountains for eventual incorporation into the USNO Master Clock. We have recently demonstrated short-term stability of ZxIO-” at I second with white frequency behavior into the mid I0,’5...