Category Archives: Research

Influence Of Low-vacuum Helium Cold Plasma Pre-treatment On The Rooting And Root Growth Of Zoysiagrass (Zoysia Willd.) Stolon Cuttings

The influence of low-vacuum helium cold plasma treatment on the rooting percentage, root growth and physiochemical properties of zoysiagrass stolon cuttings was studied. Zoysiagrass stolon cuttings were pre-treated with 0, 100, 200, 300 and 400 watts (W) of cold plasma … Continue reading

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Helium Depth Profile Measurements Within Tungsten Coatings By Using Glow Discharge Optical Emission Spectrometry (GDOES)

In the present paper results concerning the implementation of the Glow Discharge Optical Emission Spectrometry (GDOES) for measure the He depth profile within W coatings are given. The He emission line situated at 587.5 nm was used in this respect. W … Continue reading

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Testing Diffusion of Cosmic Rays In The Heliosphere With The Proton-to-helium Ratio Data From AMS

After six years of continuous observations in space, the Alpha Magnetic Spectrometer experiment has released new data on the temporal evolution of the proton and helium fluxes in cosmic rays. These data revealed that the ratio between proton and helium … Continue reading

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Solvation And Cluster Formation In Helium Nanodroplets

Alkwin Slenczka and Bretislav Friedrich provide insight into their joint project on solvation and cluster formation in helium nanodroplets. The project focuses on solvation and cluster formation in helium nanodroplets. In vacuum, a molecule is free to exercise its quantum … Continue reading

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Mutual friction force with quartz tuning fork oscillations in superfluid helium

ABSTRACT An experimental study of the vibrational characteristics of a quartz tuning fork at low temperatures has been carried out. The measurement results in vacuum at 1.5 K are shown to almost coincide with data obtained at 0.7 K in the case … Continue reading

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