Alkali metals, mainly K and Na, which are present in solid fuels such as biomass and coal,
play an important role during their thermal conversion, eg, in combustion or gasification. At …

The status of on-line methods for determining metal species, particularly alkali and heavy
metals, is reviewed. The background and motivation is discussed first, including current …

A theoretical model of wavelength modulation spectroscopy that uses a laser diode on a
Lorentzian absorption line is presented. This theory describes the general case of a current …

We report the laser cooling and trapping of neutral potassium on an open transition.
Fermionic 40 K is captured using a magneto-optical trap (MOT) on the closed 4 S 1/2→ 4 P …

The in situ quantitative profiles of temperature and OH radical concentration in a postflame
region of methane–air premixed counterflow flames were measured by wavelength …

An overview is presented of the present status of on-line measuring methods for analysis of
metal species, particularly alkali and heavy metals, in process gas. The motivation for …

We demonstrate a novel use of the pump-probe thermal lens spectroscopy and Z-scan
techniques for the measurement of the small absorption coefficient in a semiorganic …

We present an application of cavity-enhanced absorption spectroscopy with an off-axis
alignment of the cavity formed by two spherical mirrors and with time integration of the cavity …

The issues of the development, calibration and putting into operation of a diode laser
spectrometer for high-precision measurements are considered. The tests rely on the use of …

Optical spectroscopy provides powerful means for studying geophysical gas emissions. An
extensive research program in this field has been performed by Swedish researchers in …