We demonstrate an atomic bandpass optical filter with an equivalent noise bandwidth less than 1 GHz using the D1 line in a cesium vapor. We use the ElecSus computer program to find optimal experimental parameters and find that, for important quantities, the cesium D1 line clearly outperforms other alkali metals on either D-lines. The filter simultaneously achieves a peak transmission of 77%, a ...

We have observed and located more than 60 magnetic field-induced Feshbach resonances in ultracold collisions of ground-state Cs atoms. Multiple extremely weak Feshbach resonances associated with g-wave molecular states are detected through variations in the radiative collision cross sections. The Feshbach spectroscopy allows us to determine the interactions between ultracold cesium atoms and th...

The thymidine analog 5-bromodeoxyuridine (BrUdR) incorporated into DNA has been successfully used as a selective agent (1, 2) or mutagen (3) on various animal cells. Some of its effects are understandable in terms of base substitution in the genetic material; others, however, such as the reversible suppression of cytodifferentiation (4-7), remain unexplained. We have examined the effects of pro...

Single crystal of Thallium doped cesium Iodide –Scintillator crystal was grown using vertical Bridgeman technique. The grown crystal was included for cutting and polishing for the characterization purpose and this crystal was studied by optical transmission properties, photo luminescence and thermally luminescence characteristics. Gamma-ray detectors were fabricated using the grown crystal that...

Modelling transport and deposition of caesium and iodine from the Chernobyl accident using the DREAM model J. Brandt, J. H. Christensen, and L. M. Frohn National Environmental Research Institute, Department of Atmospheric Environment, Frederiksborgvej 399, P.O. Box 358, DK-4000 Roskilde, Denmark Received: 11 April 2002 – Accepted: 14 May 2002 – Published: 24 June 2002 Correspondence to: J. Bran...

Macromolecular sedimentation in inhomogeneous media is of great practical importance. Dynamic density gradients have a long tradition in analytical ultracentrifugation, and are frequently used in preparative ultracentrifugation. In this paper, a new theoretical model for sedimentation in inhomogeneous media is presented, based on finite element solutions of the Lamm equation with spatial and te...

The cesium carbonate-mediated reaction of 2-bromoallyl sulfones and ortho-hydroxychalcones furnished 3-arylsulfonyl-4H-chromene derivatives in 58-67% yield (18 examples). 2-Bromoallyl sulfones functioned as synthetic surrogates for allenyl sulfones in the reaction.

The DNA of patients taking immunosuppressive and anti-inflammatory thiopurines contains 6-thioguanine (6-TG) and their skin is hypersensitive to ultraviolet A (UVA) radiation. DNA 6-TG absorbs UVA and generates reactive oxygen species that damage DNA and proteins. Here, we show that the DNA damage includes covalent DNA-protein crosslinks. An oligonucleotide containing a single 6-TG is photochem...

Cesium-containing triple cation perovskites are attracting significant attention as suitable tandem partners for silicon solar cells. The perovskite layer of a cell must strongly absorb the visible light and be transparent to infrared light. Optical transmittance measurements layers containing different cesium concentrations (0–15%) were carried out on purpose evaluate utility fabrication monol...