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Comment Re:Asking a question for a friend (Score 1) 29

It was discussed by a bunch of people in the slashdot duplicate story 2 days ago - https://science.slashdot.org/s....

The upshot is that each annihilation makes about 2 GeV (similar to a lowish energy cosmic ray). If you add it all up and convert to more everyday scale units the total is around 30 nano Joules - so not very much. I bet some high energy gamma rays will escape the equipment though.

Comment Re:All copper is "oxygen-free" (Score 1) 69

Why do I still read slashdot? People here used to actually know things.

In fact, even OFC (oxygen free copper) or the more commonly used OFHC (oxygen free high conductivity) have oxygen in them. The purest I've ever heard of has an oxygen concentration of around 0.1 ppm. There is no copper in solid form you can get on earth that is oxygen free. The material they used in their Penning trap just has a lot less oxygen than the copper used for more mundane things like wiring. OFHC has been used industrially for at least 100 years (vacuum tubes, magnetrons for WW2 radar, nearly every vacuum system used in semiconductor manufacturing).

In typical slashdot fashion, someone assumes that the entire scientific field knows less than they do. This isn't hard to find, oxygen free copper even has it's own wikipedia page!

Comment Re:Riddle me this (Score 1) 126

Can you say the same?

I worked in industry right out of grad school and have both patents and products to show from that time. The industry scientists and gov't research scientists I've worked with are indistinguishable in terms of skill, dedication, and productivity.

While industry is undoubtably more efficient at making widgets, in the mid 1980's industry essentially abandonded all basic research. At this point, only academia (whose main job is really training more PhDs) and goverment labs are the only places doing basic research. It's worth debating how much to spend on basic research, but without some, all development will ultimately stop.

The fact that you think many gov't "scientists" are either making weapons, poisons, or stifling innovation tells me you know very little about what actually goes on.

Comment Re:Riddle me this (Score 2, Interesting) 126

Retired fed here. There are many world class research institutions within the US Federal governent. I know of five physics Nobels in my former organization during the time I was there. I suspect the record is even better in medicine/heath/biology. Although I was just an engineer building intruments you couldn't buy commercially, my 200+ publications with 40,000+ citations show that it's not all bureaucracy.

Comment Re:Looks tabletop to me... (Score 1) 38

I looked at this x-ray source. It's spectrally broad hard x-rays (8keV). Since x-ray mirrors (which suck worse that EUV mirrors) require spectrally narrow beams it would be very difficult to build any sort of projection lithography system with this. While Spectrum has no details I bet they are using a linac to make spectrally narrow soft x-ray beams (500ev or so). Making reticles and photoresists compatible with hard x-rays would require significant development.

Comment Re:Looks tabletop to me... (Score 2) 38

Sorry nope. Both EUV and DUV are pulsed in ASML tools. The EUV source actually fires two separate CO2 laser pulses at a tin droplet. The first vaporizes the Sn to make a plasma, the second generates the EUV light by exciting the plasma. The only continuous light source ASML sells is the i-line (365 nm) UV source used for large features in the final device layers.

Comment Re:It's always about what you want to pay for.... (Score 1) 273

Is the NSF really necessary? There might be a better way to organize science, but for the past 50 years or so virtually every US PhD granted in the hard sciences or advanced engineering has been funded using grants from NSF, DOE, ARPA, DARPA, NIH and other federal sources. Without this federal funding (or some stable and well planned replacement) there will be no new scientists.

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