Showing 621 - 640 results of 3,780 for search '"helium"', query time: 0.26s Refine Results
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    The mobility of small vacancy/helium complexes in tungsten and its impact on retention in fusion-relevant conditions by Danny Perez, Luis Sandoval, Sophie Blondel, Brian D. Wirth, Blas P. Uberuaga, Arthur F. Voter

    Published 2017-05-01
    “…In this work, we use large-scale Accelerated Molecular Dynamics simulations to investigate small (N = 1,2) V N He M vacancy/helium complexes, which serve as the nuclei for larger helium bubble growth, over timescales reaching into the milliseconds under conditions typical of the operation of fusion reactors. …”
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  4. 624

    Helium irradiation-induced segregation and mechanical response in China low activation martensitic (CLAM) steel by Yanxiang Liang, Luobin Wang, Aibo Luo, Qiang Wan, Huiling Duan

    Published 2023-07-01
    “…The China Low Activation Martensitic (CLAM) steel was irradiated by high energy helium ions under different ion doses, the microstructure evolution was studied by using a transmission electron microscope (TEM) and Energy Dispersive Spectrometer (EDS) mapping. …”
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    Light Ion Yields from Bombardment of Thick Targets by Protons, Helium-4 and Iron-56 by Castellanos Luis A., McGirl Natalie A., Srikrishna Ashwin P., Heilbronn Lawrence H., Tessa Chiara La, Rusek Adam, Sivertz Michael, Blattnig Steve, Clowdsley Martha, Slaba Tony, Zeitlin Cary

    Published 2017-01-01
    “…In March 2016 accelerator-based experiments colliding protons (0.4 and 0.8 GeV), helium (0.4 AGeV) and iron (0.4 and 0.8 AGeV) on thick aluminum targets with surface densities of 20, 40, and 60 g/cm2 were performed at the National Aeronautics and Space Administration Space Radiation Laboratory (NSRL) at Brookhaven National Laboratory. …”
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    MICROSTRUCTURE EVOLUTION AND DEUTERIUM RETENTION IN SS316 STEEL IRRADIATED WITH HEAVY IONS, HELIUM AND HYDROGEN by S. A. Karpov, I. E. Kopanets, B. S. Sungurov, G. D. Tolstolutskaya, A. S. Kalchenko

    Published 2016-03-01
    “…A considerable content of hydrogen in the traps associated with helium and argon bubbles was found, that confirms the data obtained for stainless steels irradiated in a light water reactors.…”
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    First experimental demonstration of real-time neutron capture discrimination in helium and carbon ion therapy by Marissa Kielly, Anita Caracciolo, Andrew Chacon, James Vohradsky, Davide Di Vita, Akram Hamato, Hideaki Tashima, Daniel R. Franklin, Taiga Yamaya, Anatoly Rosenfeld, Marco Carminati, Carlo Fiorini, Susanna Guatelli, Mitra Safavi-Naeini

    Published 2024-01-01
    “…Abstract This work provides the first experimental proof of an increased neutron capture photon signal following the introduction of boron to a PMMA phantom during helium and carbon ion therapies in Neutron Capture Enhanced Particle Therapy (NCEPT). …”
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    Pulsed Laser-Assisted Helium Ion Nanomachining of Monolayer Graphene—Direct-Write Kirigami Patterns by Cheng Zhang, Ondrej Dyck, David A. Garfinkel, Michael G. Stanford, Alex A. Belianinov, Jason D. Fowlkes, Stephen Jesse, Philip D. Rack

    Published 2019-09-01
    “…A helium gas field ion source has been demonstrated to be capable of realizing higher milling resolution relative to liquid gallium ion sources. …”
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    Corrosion behavior of diverse sputtered coatings for the helium cooled pebbles bed (HCPB) breeder concept by T. Hernández, F.J. Sánchez, A. Moroño, E. León-Gutiérrez, M. Panizo-Laiz, M.A. Monclus, R. González-Arrabal

    Published 2020-12-01
    “…The present paper studies the corrosion behavior of several sputtered coatings (nanostructured W, SiC and Al2O3) under the working conditions expected for the helium cooled pebbles bed breeder concept to be used in future nuclear fusion reactors. …”
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    A Comparative Study of Gallium-, Xenon-, and Helium-Focused Ion Beams for the Milling of GaN by Shuai Jiang, Volkan Ortalan

    Published 2023-11-01
    “…The milling profiles of single-crystal gallium nitride (GaN) when subjected to focused ion beams (FIBs) using gallium (Ga), xenon (Xe), and helium (He) ion sources were investigated. An experimental analysis via annular dark-field scanning transmission electron microscopy (ADF-STEM) and high-resolution transmission electron microscopy (HRTEM) revealed that Ga-FIB milling yields trenches with higher aspect ratios compared to Xe-FIB milling for the selected ion beam parameters (30 kV, 42 pA), while He-FIB induces local lattice disorder. …”
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