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Title: FIRST STEPS TOWARD FUSION AT NIF Post by: Prometheus on November 23, 2005, 06:28:38 PM FIRST STEPS TOWARD FUSION AT NIF
Laser pulses shot into a cavity can produce the conditions required to trigger nuclear fusion reactions, scientists at Lawrence Livermore National Laboratory in California report. The finding was a crucial test of principle for Livermore's National Ignition Facility (NIF, http://www.llnl.gov/nif/project/index.html (http://www.llnl.gov/nif/project/index.html) ), the $3.5 billion machine now under construction and expected to start full operations in 2009. NIF will produce fusion reactions by focusing 192 powerful ultraviolet laser beams through small holes into the hollow interior of a gold cavity called a hohlraum. The laser light quickly heats up the cavity's inner walls, which generate x rays, in a? few nanosecond-long bursts of energy more than 60 billion times as bright as the surface of the sun. The outer shell of a small capsule containing frozen deuterium and tritium placed inside this mini-oven will be heated by these x rays and rapidly expand, resulting in heating and compression of its core (to 1000 times its initialdensity) which will become as dense as the sun's center, triggering nuclear fusion. During the first hohlraum experiments at NIF, a large team of physicists, engineers and technicians (contact: Eduard Dewald, dewald3@llnl.gov, 925-422-7087) used the four existing NIF laser beams to prove NIF's x-ray production capability. NIF was operating at just 1 percent of its full design energy, and the cavity contained no fusion materials.? However, the x-ray flux inside the cavity---the amount of energy per unit area and per unit time---has been shown to agree with expectations, and is similar to those required for future fusion experiments. (Dewald et al., Physical Review Letters, 18 November 2005). Uncertainties over the continued funding of NIF seemed to be resolved in a recent House-Senate conference agreement over the 2006 energy bill (see FYI No. 162, November 11, http://www.aip.org/fyi/2005/162.html ). Title: Re: FIRST STEPS TOWARD FUSION AT NIF Post by: Guns N RockMusic on November 23, 2005, 10:21:56 PM Outstanding. Just another step towards solving the world's energy problems. Now we just wait until the environmentalists protest and claim that the lives of rats and cockroaches are more important than the energy problems of civilized man.
Title: Re: FIRST STEPS TOWARD FUSION AT NIF Post by: Where is Hassan Nasrallah ? on November 24, 2005, 07:21:37 AM i read on my " History of Zero" book, that (from our understanding of the universe), getting energy A from energy B , with A > B is impossible, cause " somewhere in the universe the equilibrium is modified " ..... wierd.
like if we produce 60 billion unit of energy.... somewhere 60 billion of energy are used .... Title: Re: FIRST STEPS TOWARD FUSION AT NIF Post by: Sin Cut on November 24, 2005, 02:26:20 PM like if we produce 60 billion unit of energy.... somewhere 60 billion of energy are used .... Title: Re: FIRST STEPS TOWARD FUSION AT NIF Post by: Prometheus on November 24, 2005, 05:57:21 PM its basic conservation of engery.....engery cannot be created or destroyed it can only change from one form to another.
if only we can find a way to directly induce electricty from heat...... that would be the ultimate free engery.... would be way more effecient and abundant then anything every done. because we all know heat is a by product of all tings electric..... so if we could use this by product...... ohh boy excelent edit: well after doing some searching..... cause of a brain fart.... i realised that a photovoltic cell works in this principal (semi conductors) which use heat engery from teh sun to create a current.now.... if we can get the real efficancy up highenough this would be a great source of power...... Title: Re: FIRST STEPS TOWARD FUSION AT NIF Post by: Walk on November 24, 2005, 08:28:57 PM The maximum theoretical efficiency of a solar cell isn't even close to 100%. Heat --> electricity is a very poor pathway. Of course, steam power is much better! : ok: Solar power is all hype.
Title: Re: FIRST STEPS TOWARD FUSION AT NIF Post by: Prometheus on November 25, 2005, 06:37:46 AM The maximum theoretical efficiency of a solar cell isn't even close to 100%. Heat --> electricity is a very poor pathway. Of course, steam power is much better!? : ok: Solar power is all hype. bah its not hype........ its just the same as all tech...... said to be better then what it is.......then it takes years for it to get what it actualy was said to be....... digital cable for example with on-demand video...... was siad in 1990 about it.... took 12 years or so for it to go to commercial release Title: Re: FIRST STEPS TOWARD FUSION AT NIF Post by: Where is Hassan Nasrallah ? on November 25, 2005, 07:56:37 AM well the closest we got to "infinite power" was the thing called the CASIMIR EFFECT ( from dutch doctor Hendrick BG Casimir)
it's kinda complicated ... it's about the zero point of energy, and the nature of the light (waves / particules) and ..... void. the effect kinda showed that void can create energy (meaning FREE energy, because void is nothing) ... basically a small gap of void could bring two plates of metal closer.... > energy .... the only problem was to separate the plates again :) ?h? ;D |