appliance cord with IEC input module and two 20 inch high voltage output leads, with color-coded alligator clips complete the package. In this way the system is vacuum and water tight and can be disassembled easily for maintenance. But when a proof has turned into a plausibility argument by page 47 release the hounds! ) Provide proper warning signs for both the laser radiation and high voltage. One end of the bellow assembly is connected to the plasma tube, and the other is soldered to a small brass plate. Common copper tubing and soldered fittings can be used for vacuum and gas lines as well as for the electrodes, with PVC pipe for the water jacket. Each vendor installs a peristaltic pump to meter the enzyme. The gas is compressed in a cylinder at many times atmospheric pressure. For the USA, would it be OK to design on the basis of 220 VAC being available, or is that inconvenient? This avoids the alignment problems with an O-ring-only design." Optics - A metal coated (e.g., copper or gold) mirror can be used for the HR but special materials must be used for the partially reflecting OC since most common materials are opaque at the CO2.
It will depend somewhat on the plasma tube dimensions, but will likely be somewhere between 5 and 25 torr. Not only may water vapor interfere with lasing, the coating on some optics or the base material itself may be damaged by excessive moisture. With some experience operating a CO2 laser, one can tell much about the operating conditions from the visual appearance of the glow discharge. Cutting lasers generally have to be very rouged, so to be resistant to fibrations that can cause mis-alignment of the optics. See the section: More on Obtaining Gases. Some glass working is specified (though this could easily be avoided with minimal design changes) and the power supply has more frills (but is only AC instead of DC and therefore will not be as efficient). Lr Length of the resonator (distance between the OC and HR, NOT just the active medium). The vacuum pump is a speedivac manufactured by Edwards High Vacuum Ltd. This simple test (suggested by Dave Bacon) already catches at least 60 of wrong mathematical breakthroughs.
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