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Monthly Archives: September 2020
Measurement of heat flux in multi-layer insulated helium cryostats after loss of insulating vacuum
The dimensioning of pressure relief devices (PRD) for cryogenic pressure equipment requires knowledge on the heat input at the maximum credible incident. In helium cryostats, this situation is typically defined by the loss of insulating vacuum (LIV), where the heat … Continue reading
Posted in Research
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Molecular Dynamics Investigation On the Configuration And Shape of Helium Cluster in Tungsten
Abstract The stable configuration and shape of helium cluster in tungsten are investigated with molecular dynamics method. It is found that the configuration of helium cluster tends to form a near-spherical polyhedron. At high temperature, the Hen cluster for n … Continue reading
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3 Reasons To Avoid Switching to Helium-Sealed Hard Drives
Many clients with their hopes shattered to save their precious data come through our doors. That number keeps increasing and it is much to do with the helium-based/sealed hard drive they have. Either a cool magazine article or a friend … Continue reading
Posted in Helium application
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Impact And Lifecycle of Superfluid Helium Drops On a Solid Surface
We have used high-speed video and interferometry to investigate the impact, spreading, and eventual contraction of superfluid 4He drops on a sapphire substrate in a saturated atmosphere of helium vapor. We find that the short-term kinetic spreading of superfluid drops … Continue reading
Posted in Research
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Precision Spectroscopy of Atomic Helium
Abstract Helium is a prototype three-body system and has long been a model system for developing quantum mechanics theory and computational methods. The fine structure splitting in the 23P state of helium is considered to be the most suitable for … Continue reading
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