Nature13d
Source of coherent kiloelectronvolt X-rays
Figure 1: Photon energy spectrum of coherent soft-X-ray emission from a helium gas (red line), measured using a multichannel analyser (Oxford) and a silicon–lithium semiconductor detector cooled ...
MPR News27d
As helium prices balloon, hopes rise that northeast Minnesota has big deposit of the gas
NASA uses it as a purge gas to flush out the plumbing in rockets ... which is why it’s used in leak detection. Helium is also the only element that remains a liquid at Absolute Zero, the ...
Nature29d
Gas Chromatographic Analysis of Permanent Gases using Standard Ionization Detector Equipment
ALTHOUGH the most common high-sensitivity detectors now in use for gas ... This was done by substituting ordinary commercial helium for argon as the carrier gas. The ionization chamber was a ...
scmp.com23d
Chinese scientists turn Boeing’s helium leak crisis into stealth missile tech breakthrough
The cold helium gas also helps take thermal stealth to a whole new level. Exhaust plumes cooled by 1,327 degrees Celsius (2,420 Fahrenheit) can technically evade detection by almost any infrared ...