The system based on spatially resolved optical emission spectroscopy dedicated for in situ diagnostics of plasma assisted CVD processes is presented in this paper. Measurement system coupled with chemical vapour deposition chamber by dedicated fiber-optic paths enables investigation of spatial distribution of species densities (Hx, H , CH, CH) during chemical vapour deposition process. Experime...

The recent spectroscopy of water vapour in the ground electronic state is reviewed. Experimental advances from the microwave to the near ultraviolet spectral regions are surveyed. On the theoretical front, new approaches to the calculation of vibration–rotation energy levels are covered. Water spectroscopy finds extensive application in astronomy, atmospheric science and combustion research. An...

Due to the crucial role of clouds, the knowledge of the horizontal and vertical distribution and the optical properties of globally distributed clouds is of fundamental importance to the understanding of the Earth radiation and heat balance, and of weather and climate of the atmosphere. Measurements of radiation from space play a fundamental role in helping us to understand how radiation depend...

this paper reports the synthesis and characterization of photocatalyst cds nanoparticles for investigation of photocatalytic degradation of 2,4,6-trichlorophenol. cds nanoparticles were synthesized by the microwave-assisted sol-gel method and characterized by various techniques such as x-ray diffraction, filed emission scanning electron microscopy, energy dispersive spectroscopy, fourier transf...

This paper presents an experimental and theoretical investigation of plasmoids, in forms of fireballs and fire-columns, obtained by directing localized microwaves (~0.8 kW at 2.45 GHz) into a solid substrate (e.g. silicon) in a microwave cavity. The plasmoid is blown up from the hotspot created in the silicon substrate to the air atmosphere within the microwave cavity. The experimental diagnost...

We demonstrate a detection method for microwave spectroscopy on magnetization reversal dynamics of nanomagnets. Measurement of the nanomagnet anisotropic magnetoresistance was used for probing how magnetization reversal is resonantly enhanced by microwave magnetic fields. We used Co strips of 2 μm × 130 nm × 40 nm, and microwave fields were applied via an on-chip coplanar wave guide. The method...

Quantum tunneling of the magnetization in a single molecule magnet has been studied in experiments that combine microwave spectroscopy with high sensitivity magnetic measurements. By monitoring spin-state populations in the presence of microwave radiation, the energy splittings between low lying superpositions of high-spin states of single molecule magnet Ni4 (S=4) have been measured. Absorptio...

This paper reports the experimental demonstration of frequency upshifting of microwave radiation by a relativistic ionization front. Source radiation at 34.8 GHz has been upshifted to greater than 116 GHz in a continuously tunable fashion. It is a new technique for generating high-power, tunable radiation in short pulses, and has potential applications in plasma diagnostics, time-resolved micro...