Oxford Instruments Analytical Oy

Tero Eklin

Heikki Sipilä

Mikko Krapu

Kai Kuparinen

An arrangement and a method are provided for non-destructively analyzing the composition of a delicate sample. The value of the sample depends at least partly on absence of visual defects. A laser source () produces a pulsed laser beam, and focusing optics () focus said pulsed laser beam into a focal spot on the sample. A sensor () receives and detects optical emissions from particles of the sample excited by said pulsed laser beam. A processing subsystem () produces information of the composition of the sample based on the optical emissions detected by said sensor ().

Method and arrangement for non-destructive composition analysis of delicate samples

A measurement apparatus and method are provided for determining the material composition of a sample. An X-ray fluorescence detector () detects fluorescent X-rays coming from said sample under irradiation with incident X-rays. A laser source () is adapted to produce a laser beam. Focusing optics () focus said laser beam into a focal spot on a surface of said sample. An optical sensor () detects optical emissions coming from particles of said sample upon being exposed to said laser beam at said focal spot. A gas administration subsystem () is adapted to controllably deliver gas to a space () around said focal spot.

Measurement apparatus and method for determining the material composition of a sample by combined X-ray fluorescence analysis and laser-induced breakdown spectroscopy

A measurement device and method are provided for OES measurements in air. An arc electrode () has a certain thickness and a pointed end having a certain grinding angle. Holding means () hold the arc electrode () at a certain distance from the material to be measured. A voltage and current supply () generates and maintains a voltage between the arc electrode and the material to be measured and supplies current through the arc. Focusing and detection optics () collect and detect optical radiation. The thickness of the arc electrode () is between 3 and 10 mm and the grinding angle is between 50 and 130 degrees. The arc distance is between 0.5 and 3 mm. An ignition spark voltage is between 5 and 20 kV, an arc voltage between 20 and 160 V and an arc current between 1 and 10 A. The focusing and detection optics () collect and detect at least optical radiation on a wavelength of 193 nm.

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Espoo, Finland

Tero Eklin