We demonstrate a tunable narrowband filter based on optical-pumping-induced circular dichroism in rubidium vapor. The filter achieves a peak transmission of 14.6%, a linewidth of 80 MHz, and an out-of-band extinction of >or=35 dB. The transmission peak can be tuned within the range of the Doppler linewidth of the D1 line of atomic rubidium at 795 nm. While other atomic filters work at frequenci...

Three toxic heavy metals (Cd, Pb, and Hg) were analyzed in the newly found invasive species Canary Islands, Cronius ruber. Its high growth rate its widely varied diet are affecting marine ecosystem. The study was conducted using electrothermal vaporization atomic absorption spectrometry (GF-AAS) cold-vapor spectrophotometry (CV-AAS). Significant differences terms of location sex specimens, with...

introduction : the purpose of this clinical study was to compare the blood mercury levels before and after endodontic surgery using amalgam as a root-end filling material. materials and methods: fourteen patients requiring periradicular surgery participated in this prospective clinical study. a zinc-free amalgam was employed as root-end filling material. blood samples were collected at three in...

this study reports the incidence of histological alterations in morphometric changes in the liver and ovary of acanthopagrus latus collected from an urban stream impaired by anthropogenic activities and from a clean site (reference). mercury concentration was determined using a standard cold vapor atomic absorption. the results showed that mercury concentration at the creek waters, and speciall...

We report the first observation of a non-dipole transition in an ultra-cold atomic vapor. We excite the 3P-4P electric quadrupole (E2) transition in Na confined in a Magneto-Optical Trap(MOT), and demonstrate its application to high-resolution spectroscopy by making the first measurement of the hyperfine structure of the 4P1/2 level and extracting the magnetic dipole constant A = 30.6 ± 0.1 MHz...

BACKGROUND The objective of this work was developing a simple and stable time-based on-line setup for assessing the potential of mercury (Hg) vapor adsorption of the commercial sorbents used in air sampling and control operation followed by cold vapor atomic absorption spectrometry (CVAAS). METHODS A special designed separation chamber was used where reduction of the injected Hg (II) solution...

Abstract: A thermodynamic model was used to find out the optimum temperature for the growth of ZnS single crystals in closed ampoules by chemical vapor transport technique. Based on this model 1002 °C was found to be optimum temperature for 2 mg/cm3 concentration of transporting agent (iodine). ZnS Crystals were grown in optimum (1002 °C) and non-optimum (902 °C and 1102 °C) temperatures. The c...