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C. V. Dharmadhikari

Publications and source records attributed to C. V. Dharmadhikari.

2 recordsLinked to original sources

A compact atomic beam based system for Doppler-free laser spectroscopy of Strontium atoms

We report the construction of a simple, light weight and compact atomic beam spectroscopy cell for Strontium atoms. The cell is built using glass blowing technique and includes a simple Titanium Sublimation Pump for active pumping of the residual and background gases to maintain ultra-high vacuum. Commercially available and electrically heated dispenser source is used to generate the beam of Sr atoms. We perform spectroscopy on the $5s^2\ ^1S_0\longrightarrow 5s\ 5p\ ^1P_1$ transition to obtain a well resolved Doppler free spectroscopic signal for frequency stabilization of the laser source. This design can be easily extended to other alkali and alkaline earth metals.

physics.atom-ph

ECR Plasma assisted deposition of zinc nanowires

Deposits of one-dimensional nanostructures of zinc with diameters of 90-120 nm have been obtained by means of sputtering in an Electron Cyclotron Resonance (ECR) plasma reactor. The sputtering has been made effective by using a negatively biased cylindrical target in a hollow cathode geometry. The nanocrystalline films deposited on the glass substrate were studied with scanning tunneling microscopy/spectroscopy and was found to consist of nanowires having metallic nature. The crystalline nature of these metallic nanowires was studied with x-ray diffraction analysis.

cond-mat.mtrl-sci