Dec 5 2014

GEMLink+ – Much More than Communication Software

GEMLink+ pre-processing software, which is provided with every magnetometer system GEM Systems manufactures provides diurnal correction, profile plotting and some basic mapping and modeling functions. GEMLink+ provides all of the data visualization features needed by the geoscientist to quickly assess the data quality of an acquired data set. Since the Earth’s magnetic field varies with time, a base station magnetometer is needed to monitor and record the variations with time. Applying the “diurnal” corrections is another function of the GEMLink+ software. GEMLink+ can import and export Google KMZ files too; the only caveat is that co-ordinates need to be in…

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Dec 1 2014

Potassium Vapour Magnetometers – A Short Summary (Part 3)

Broad Line Versus Narrow Line Spectra Potassium and Rubidium have 6 spectral lines of various intensities, Cesium 133 14 and Helium 4 just one but very wide. Width of the spectral line depends on many parameters such as the size of cells, collision of the atoms with the walls of the cells, collision with buffer gas, spin exchange, etc. Contemporary Cs and Rb magnetometers have wide overlapping spectral lines. A composite spectral line is not symmetrical but the position of its peak depends on the geometry of the sensor and the applied magnetic field. There is a large shift in…

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