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unknown multiplier
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re: Nuclear fusion research aids EUV source breakthrough
unknown multiplier   7/7/2012 2:02:34 AM
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From their lab data, the plasma doesn't look stable: http://www.aa.washington.edu/research/ZaP/publications/ICENES11_shumlak_poster.pdf

old account Frank Eory
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re: Nuclear fusion research aids EUV source breakthrough
old account Frank Eory   7/6/2012 9:09:22 PM
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For years we've been hearing that EUV will be ready for production use in "just a few more years" and now they're applying nuclear fusion technologies to create the light source? That's almost comical.

resistion
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re: Nuclear fusion research aids EUV source breakthrough
resistion   7/6/2012 6:36:03 PM
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Thanks for clarifying, but in any case the plasma stable duration is independent of power.

double-o-nothing
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re: Nuclear fusion research aids EUV source breakthrough
double-o-nothing   7/6/2012 3:36:13 PM
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You can't avoid neutrals going out radially and skipping out the light emitted and charges moving axially.

Henry Berg
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re: Nuclear fusion research aids EUV source breakthrough
Henry Berg   7/6/2012 3:44:30 AM
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A few clarifications: * Zplasma's design goal is higher power, not higher energy. * Our core technology is a flow-stabilized Z-pinch. While developed as part of nuclear fusion research, it is not related to nuclear fusion itself. * Our DPP source does use a plasma Z-pinch, but a flow-stabilized pinch, not the unstable pinch used by others in the past. * Our source ends without the explosive instabilities of other DPP sources, so it does not produce high-energy debris. * Optical collection in our design is side-on, not downstream. Thanks, Henry Berg, CEO, Zplasma, Inc.

double-o-nothing
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re: Nuclear fusion research aids EUV source breakthrough
double-o-nothing   7/6/2012 2:36:13 AM
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Another example of a misguided group/startup. They focus so much on solving a big issue, but neglect to follow up on downstream system consequences. A longer pulse per cycle obviously exposes the downstream mirrors to more ionic bombardment, despite best mitigation efforts. They need to make a positive announcement before actual integration with collection optics. Obviously, they won't get anywhere with it.

resistion
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re: Nuclear fusion research aids EUV source breakthrough
resistion   7/6/2012 12:38:13 AM
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In fact, the group uses a Z-pinch plasma, same as Ushio's DPP. They have to use xenon or tin, not hydrogen (deuterium/tritium) as the plasma medium. http://www.aa.washington.edu/research/ZaP/index.html

resistion
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re: Nuclear fusion research aids EUV source breakthrough
resistion   7/5/2012 7:18:46 PM
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Nuclear fusion plasmas are deuterium, which don't emit EUV.

McIver
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re: Nuclear fusion research aids EUV source breakthrough
McIver   7/5/2012 5:37:04 PM
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It is very impressive these advancements that we are currently having in the area of nuclear fusion research, hopefully soon everything will become reality in order to make a better world. http://www.youtube.com/watch?v=ro5-QYqqxzM

resistion
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re: Nuclear fusion research aids EUV source breakthrough
resistion   7/5/2012 4:58:23 PM
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There's also a coarseness problem, where now you're dealing with resist outgassing, crosslinking and even ablation at J/cm^2 instead of mJ/cm^2.

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