X-Message-Number: 18905 From: Date: Tue, 9 Apr 2002 15:15:16 EDT Subject: brain reader # 3 --part1_86.18ddfc05.29e497c4_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Brain reader: The optical laser system. Two years ago, on that same subject I had described a two stages system: The first would have been a chemical laser and the second a dye system pumped by the first. The new possibility to use holographic mirrors to entangle photons wipe out the dye laser stage. Because that one has an efficiency in the 0.2 percent range, the power output of the first and sole stage is divided by 500. That put into question the use of chemical lasers. These use exotic fuels such deuterium burning in fluorine or iodine oxidizer. These products are hard to find, costly or very costly, very toxic and are used in military devices. Not a good thing when an authorization to use them is mandatory or when informations on the subject is called for. Now, the reduced power allows to move to metal vapor lasers, a technology far simpler an right now in the public domain. Amateurs have built such system with 10 kW near continuous output. The pumping power is electric, not unstable chemical molecules in shock waves. The efficiency is high: Up to 20 percent. It seems the only limit found by amateurs in that technology is the availability of large surplus high voltage transformers. Outside Las Vegas, it seems the largest neon adds use only up to 50 kW and so, larger transformers are hard to find. One solution is to build a large coil with a fast circuit breaker. Extracting mega-watts with that device from the main would pose some problems, so a specific electric generator must be used. In the chemical laser version, the thermal burner had a power in the 300 giga-watts range (ten Space Shuttles at lift off to give an idea). Here, we are only in the 600 MW domain, with half that in electrical form using magneto-hydro-dynamics open cycle conversion and 120 MW in the laser beam. At first, these values seem enormous, in a way they are. On the other hand, these devices must work only some seconds at a time, not in a continuous way as is the case for a power plan. Burners in the 20 MW domain can be found at "low" cost, talks will start shortly for a 600+ MW unit. Yvan Bozzonetti. --part1_86.18ddfc05.29e497c4_boundary Content-Type: text/html; charset="US-ASCII" [ AUTOMATICALLY SKIPPING HTML ENCODING! ] Rate This Message: http://www.cryonet.org/cgi-bin/rate.cgi?msg=18905