نتایج جستجو برای: cesium compounds

تعداد نتایج: 230891  

2015
F. Kurtuluş G. Çelik Gül

Cesium molybdates with general formula CsM(MoO4)2, where M = Bi, Dy, Pr, Er, exhibit rich polymorphism, and crystallize in a layered structure. These properties cause intensive studies on cesium molybdates. CsBi(MoO4)2 was synthesized by microwave method by using cerium sulphate, bismuth oxide and molybdenum (VI) oxide in an appropriate molar ratio. Characterizations were done by x-ray diffract...

2008
R. Lutwak D. Emmons R. M. Garvey

We describe an optically pumped cesium-beam frequency standard under development for deployment on the GPS-III satellite constellation. The objective of the project is to demonstrate the feasibility of a space quulifikd optically pumped cesium-beam frequency standard exhibiting a short-term stability of cry (r < 6 x f-ln with lifetime and reliability comparable to that of the current GPS-IIF ce...

Journal: :Physical review letters 2002
M Mudrich S Kraft K Singer R Grimm A Mosk M Weidemüller

We simultaneously trap ultracold lithium and cesium atoms in an optical dipole trap formed by the focus of a CO2 laser and study the exchange of thermal energy between the gases. The optically cooled cesium gas efficiently decreases the temperature of the lithium gas through sympathetic cooling. Equilibrium temperatures down to 25 microK have been reached. The measured cross section for thermal...

2003
RAYMOND A. SJODIN

The reduction of membrane potential in frog sartor/us muscle produced by rubidium and cesium ions has been studied over a wide concentration range and compared with depolarization occasioned by potassium ions. The constant field theory of passive flux has been used to predict the potential changes observed. The potential data suggest certain permeability coe~eient ratios and these are compared ...

Journal: :The Yale Journal of Biology and Medicine 1956
Arnold S. Relman

Interest in the biological properties of rubidium and cesium stems from their close physicochemical relationship to potassium. Reference to the Periodic Table shows these elements to be adjacent members of the Group I alkali metal series, which has the order: lithium, sodium, potassium, rubidium, cesium. In terms of their chemical behavior the elements of this series may be separated into two g...

Journal: :Environmental science & technology 2005
Laura A Wendling James B Harsh Thomas E Ward Carl D Palmer Melinda A Hamilton Jeffrey S Boyle Markus Flury

Biogeochemical processes in the rhizosphere can significantly alter interactions between contaminants and soil minerals. In this study, several strains of bacteria that exude aluminum (Al)-chelating compounds were isolated from the rhizosphere of crested wheatgrass (Agropyron desertorum) collected from the Idaho National Laboratory (INL). We examined the effects of exudates from bacteria in the...

Journal: :Optics express 2009
Sidney Burks Jérémie Ortalo Antonino Chiummo Xiaojun Jia Fabrizio Villa Alberto Bramati Julien Laurat Elisabeth Giacobino

We report the experimental generation of squeezed light at 852 nm, locked on the Cesium D(2) line. 50% of noise reduction down to 50 kHz has been obtained with a doubly resonant optical parametric oscillator operating below threshold, using a periodically-poled KTP crystal. This light is directly utilizable with Cesium atomic ensembles for quantum networking applications.

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