Low Pressure' Gas Filled Lamp

Low-pressure gas discharge modelling

Low-pressure gas discharge modelling is reviewed, both from a historical perspective and for current industrial applications. An ovetview of the basic mathematical and physical models used to describe low-pressure discharges is given, together with a summary of the most common numerical techniques which have been adopted. Modelling of the oc glow discharge and discharges maintained by high-freq...

1 O ct 2 00 4 Gas gain on single wire chambers filled with pure isobutane at low pressure

The gas gain of single-wire chambers filled with isobutane, with cell cross-section 12x12 mm and wire diameters of 15, 25, 50 and 100 μm, has been measured at pressures ranging 12-92 Torr. Contrary to the experience at atmospheric pressure, at very low pressures the gas gain on thick wires is higher than that on thin wires at the same applied high voltage as was shown in [1]. Bigger wire diamet...

Fiber-Optic Temperature Sensor Using a Fabry–Pérot Cavity Filled With Gas of Variable Pressure

We report a high-temperature fiber-optic sensor based on measuring the spectral fringes of a Fabry–Pérot (FP) cavity on a microstructure fiber (MF) when the gas pressure in the cavity is varied through the holes in the MF. Theoretical analysis shows that the absolute temperature can be deduced from the slope of the spectral shift versus pressure curve, which requires no calibration and is insen...

Photolytic decomposition of saccharides with a high-output, low-pressure mercury lamp for voltammetric trace analysis.

Argonne Gas-filled Fragment Analyzer-AGFA

As the premier stable-beam user facility in the USA, ATLAS is currently being upgraded to provide high intensity (>1 pμA) stable beams. The combination of new highefficiency detectors and intense beams will move ATLAS to the forefront as a world research center for studying exotic nuclei, such as super-heavy nuclei, nuclei at or near the proton drip line, proton-rich nuclei near 100 Sn and neut...