Results 1 to 10 of about 94,291 (172)
Impact of Soret effect on hydrogen and helium retention in PFC tungsten under ELM-like conditions [PDF]
Nuclear Fusion, 2023 In our previous work, we have demonstrated using nonequilibrium molecular-dynamics simulations that the fluxes of helium and self-interstitial atoms in the presence of a thermal gradient in tungsten are directed opposite to the heat flux, indicating that
Dwaipayan Dasgupta +4 more
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Nuclear Materials and Energy, 2020 This study focuses on the influence of helium ion irradiation on the microstructure and retention of tungsten (W) and tungsten-chromium (W-Cr) alloy films. Under helium irradiation with fluence of 1.04 × 1022 He2+ / m2, blisters are found on the surfaces
Jing Yan +3 more
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Advantages and disadvantages of substitution of helium as carrier gas in gas chromatography by hydrogen. Part II. - Retention time and selectivity. [PDF]
Kvasný průmysl, 2013 Gas chromatography often uses helium, hydrogen, and nitrogen as carrier gases. The most common carrier gas is helium since it provides good separations, is inert, and is safe to use.
Tomáš HORÁK +3 more
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Deuterium retention in heavy-ion and helium-ion sequentially irradiated tungsten [PDF]
Nuclear Fusion, 2023 Neutron irradiation as well as the presence of helium (He) significantly affects fuel inventory in plasma-facing materials. To investigate the synergistic effects of neutron and He irradiation on deuterium (D) retention behaviors in tungsten, heavy- and ...
Hong Zhang +4 more
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Nuclear Materials and EnergyThe retention of hydrogen isotopes in the fusion device is critical due to safety concerns. In this work, the deuterium (D) and helium (He) retention features in the different marked tiles exposed to HL-2A tokamak discharge plasma were quantitatively ...
Yan Lyu +11 more
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Helium irradiation effects on deuterium retention in tungsten [PDF]
, 2012 To investigate effects of helium irradiation on deuterium retention properties in tungsten, thermal desorption spectroscopy of deuterium from a specimen irradiated with a sequential irradiation of 3 keV helium and 1.5 keV deuterium ions at room ...
Yuki Sakoi +3 more
openalex +3 more sources
Reduction of neoclassical bulk-ion transport to avoid helium-ash retention in stellarator reactors [PDF]
Nuclear FusionThe reduction of neoclassical energy transport in stellarators has traditionally focussed on optimizing magnetic fields for small values of ‘effective helical ripple’ — $\epsilon_\mathrm{eff}$ , the geometric factor associated with electron $1/\nu ...
C.D. Beidler +5 more
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Nuclear FusionIn situ monitoring of helium (He) retention in plasma-facing materials of nuclear fusion devices is critical for understanding plasma–wall interactions (PWIs).
Zhonglin He +8 more
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The role of the graphite divertor tiles in helium retention on the LHD wall
Nuclear Materials and Energy, 2017 In this study, global particle balance of helium (He) long pulse discharge with graphite divertor in the Large Helical Device (LHD) and He retention in graphite from lab-scale experiments were compared in order to determine the role of the graphite ...
M. Oya +5 more
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Flux dependence of helium retention in clean W(110): Experimental evidence for He self-trapping
Nuclear Materials and Energy, 2023 Helium (He) retention in tungsten (W) is a concern in fusion reactors since it could be detrimental to plasma facing components performance and influence the fusion fuel balance.
A. Dunand +3 more
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