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Hydrogen and helium trapping in hcp beryllium
Published 2023-04-01“…In the present paper we use analytical spectroscopy in TEM to show that hydrogen adsorbs directly at the (0001) surfaces of hexagonal helium bubbles within neutron irradiated beryllium. …”
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Review of Membranes for Helium Separation and Purification
Published 2017-02-01Subjects: “…helium…”
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Infrared spectroscopy in superfluid helium droplets
Published 2019-01-01Subjects: Get full text
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Prospects for the global helium industry development
Published 2022-06-01Subjects: “…Helium industry…”
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Observation of the antimatter helium-4 nucleus
Published 2019“…Thus, a high-energy accelerator of heavy nuclei provides an efficient means of producing and studying antimatter. The antimatter helium-4 nucleus (), also known as the anti-(), consists of two antiprotons and two antineutrons (baryon number B = '4). …”
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THE VIBRATIONAL-RELAXATION OF OZONE BY HELIUM-ATOMS
Published 1982“…An ab initio, quantum-mechanical method is used to compute rate coefficients for the vibrational relaxation of ozone in three-dimensional collisions with helium atoms. Good agreement is obtained between the calculated and experimental rate coefficients for the process He + O3(010) - He + O3(000). © 1982.…”
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New constraints on the formation of the helium lines
Published 2003“…We analyse observations of the helium lines obtained with CDS onboard SOHO. The He I 584.3 Angstrom/O III intensity ratio shows a lower limit and an upper limit that decrease with increasing 0 in intensity. …”
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The formation and properties of helium-degenerate dwarfs
Published 2001“…We have systematically analyzed the evolution of a wide variety of binary systems that ultimately lead to the formation of detached or semi-detached helium degenerate dwarfs (HeDD's). Specifically, we have explored some of the more important dimensions of parameter space including various: (i) metallicities; (ii) mass-transfer rates; and, (iii) states of evolution of the donor at the onset of mass transfer (equivalent to choosing different initial orbital separations). …”
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Angular acceleration of liquid helium II
Published 1970“…Studies have been made of the processes of angular acceleration and retardation of a simply connected volume of helium II at 1.64°K using the technique of second sound attenuation. …”
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Improved Line Intensity Analysis of Neutral Helium by Incorporating the Reabsorption Processes in a Helium Collisional-Radiative Model
Published 2023-06-01“…In this study, eight emission lines in the visible wavelength range of neutral helium were used to diagnose the electron density and temperature of the Large Helical Device (LHD) helium plasma instead of the conventional three-line method. …”
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Tritium and helium release from beryllium pebbles neutron-irradiated up to 230appm tritium and 3000appm helium
Published 2016-12-01Subjects: “…Tritium and helium release…”
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Helium distribution of Dongsheng gas field in Ordos Basin and discovery of a super large helium-rich gas field
Published 2022-01-01Subjects: “…helium content…”
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Helium enrichment mechanism of helium-rich gas reservoirs in central and western China: Degassing and accumulation from ancient groundwater
Published 2022-10-01Subjects: “…Helium-rich gas reservoir…”
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Atomistic study on helium-to-vacancy ratio of neutron irradiation induced helium bubbles during nucleation and growth in α-Fe
Published 2021-03-01Subjects: “…Helium bubble…”
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