Articles with "helium" as a keyword



In Situ Study of Deformation Twinning and Detwinning in Helium Irradiated Small‐Volume Copper

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Published in 2017 at "Advanced Engineering Materials"

DOI: 10.1002/adem.201700357

Abstract: The influence of nanoscale helium bubbles on the deformation twinning and detwinning behavior of submicron-sized Cu is investigated under tension, compression, and cyclic loading. In situ nanomechanical tests performed inside a transmission electron microscope reveal… read more here.

Keywords: deformation twinning; copper; twinning detwinning; helium irradiated ... See more keywords

Ideal Molecular Sieving with a Dense MOF for Helium Upgrading with Highly Diffusion Selective Mixed Matrix Membranes

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Published in 2025 at "Advanced Functional Materials"

DOI: 10.1002/adfm.202423999

Abstract: Helium is one of the most critical resources of this planet, as it is a finite resource, cannot be produced from radioactive decay and escapes the atmosphere, while being extraordinarily important for high‐tech applications in… read more here.

Keywords: mixed matrix; mil 116; matrix membranes; mof ... See more keywords

Helium cooled dual breeder blanket–preliminary design analyses of a candidate breeding blanket concept for near term Indian DEMO fusion reactor

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Published in 2020 at "International Journal of Energy Research"

DOI: 10.1002/er.5555

Abstract: Helium cooled dual breeder (HCDB) blanket concept is designed for Indian DEMO fusion reactor and it is made of two tritium breeder materials PbLi and Li2TiO3. It has helium as a coolant and the India… read more here.

Keywords: breeder; indian demo; blanket; blanket concept ... See more keywords
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Helium-assisted enhanced discharge in a hollow needle for high-field asymmetric ion mobility spectrometry (FAIMS)

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Published in 2021 at "Analytical and Bioanalytical Chemistry"

DOI: 10.1007/s00216-021-03250-6

Abstract: A carrier gas mixture of nitrogen and helium has been employed to improve the resolving power at the expense of sensitivity for planar high-field asymmetric ion mobility spectrometry (FAIMS) in previous work. In this paper,… read more here.

Keywords: ion; high field; asymmetric ion; field asymmetric ... See more keywords

Soft ionization mechanisms in flexible µ-tube plasma—elucidation of He-, Ar-, Kr-, and Xe-FµTP

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Published in 2024 at "Analytical and Bioanalytical Chemistry"

DOI: 10.1007/s00216-024-05419-1

Abstract: The soft ionization mechanism of helium-based plasma seems to be understood while it still remains challenging in argon-based plasma, although many studies have used argon plasmas as a soft ionization source with good ionization efficiencies.… read more here.

Keywords: soft ionization; ionization mechanisms; ionization; helium ... See more keywords

Helium-filled soap bubbles for vortex core velocimetry

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Published in 2017 at "Experiments in Fluids"

DOI: 10.1007/s00348-017-2415-x

Abstract: Velocity measurements within the core of high-swirl vortices are often hampered by heavier-than-air particle tracers being centrifuged outside the vortex core region. The use of neutrally buoyant and lighter-than-air tracers is investigated to aim at… read more here.

Keywords: vortex core; soap; core; air ... See more keywords
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Stable Trapping of Multielectron Helium Bubbles in a Paul Trap

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Published in 2017 at "Journal of Low Temperature Physics"

DOI: 10.1007/s10909-016-1702-x

Abstract: In a recent experiment, we have used a linear Paul trap to store and study multielectron bubbles (MEBs) in liquid helium. MEBs have a charge-to-mass ratio (between 10$$^{-4}$$-4 and 10$$^{-2}$$-2 C/kg) which is several orders… read more here.

Keywords: paul trap; trapping multielectron; trap; stable trapping ... See more keywords

A Continuous 100-mK Helium-Light Cooling System for MUSCAT on the LMT

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Published in 2018 at "Journal of Low Temperature Physics"

DOI: 10.1007/s10909-018-2024-y

Abstract: The MUSCAT instrument is a large-format camera planned for installation on the Large Millimeter Telescope in 2018. MUSCAT requires continuous cooling of several large-volume stages to sub-Kelvin temperatures, with the focal plane cooled to 100 mK.… read more here.

Keywords: system; continuous 100; helium light; muscat ... See more keywords

Charge Motion in Solid Helium

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Published in 2024 at "Journal of Low Temperature Physics"

DOI: 10.1007/s10909-024-03160-8

Abstract: We overview and discuss several advances in the understanding of the motion of ions through solid helium. Positive and negative ions in solid helium are microscopic complexes with internal structures embedded into the host crystal… read more here.

Keywords: 12pt minimal; documentclass 12pt; helium; usepackage ... See more keywords

Reliability Enhancement in Nondestructive Evaluation: Development of Practical Rules for Vacuum Type Helium Leak Tests

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Published in 2017 at "Journal of Nondestructive Evaluation"

DOI: 10.1007/s10921-017-0394-8

Abstract: In helium leak testing, reliability is an important factor and while attempting to improve this, lot of challenges are being faced. There are contributors for bringing in variations in leak meter readings obtained during system… read more here.

Keywords: practical rules; helium leak; test; reliability ... See more keywords

Atmospheric Helium Abundances in the Giant Planets

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Published in 2024 at "Space Science Reviews"

DOI: 10.1007/s11214-024-01090-1

Abstract: Noble gases are accreted to the giant planets as part of the gas component of the planet-forming disk. While heavier noble gases can separate from the evolution of the hydrogen-rich gas, helium is thought to… read more here.

Keywords: documentclass 12pt; document; atmospheric helium; giant planets ... See more keywords