Charge-state effects on charge transfer of helium ions in gold nanosheet by Ya-Ting Sun, Feng Wang, Su-Na Pang, Fei Mao, Chen-Guang Li

“…We investigate the charge-state effects on charge transfer of helium ions in gold nanosheet using the time-dependent density functional theory non-adiabatically coupled to the molecular dynamics. …”
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Electron Ionization of Size-Selected Positively and Negatively Charged Helium Droplets by Felix Laimer, Fabio Zappa, Elisabeth Gruber, Paul Scheier

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Multifluid Simulations of Upper-chromospheric Magnetic Reconnection with Helium–Hydrogen Mixture by Q. M. Wargnier, J. Martínez-Sykora, V. H. Hansteen, B. De Pontieu

“…Second, hydrogen and helium ionization effects are relevant to the energy balance of the chromosphere. …”
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Numerical simulation of coaxial–coplanar dielectric-barrier discharge in atmospheric helium by Shuang Ran, Jing Wang, Bingying Lei, Simeng Liu, Jing Li, Yishan Wang, Wei Zhao, Yixiang Duan, Jie Tang

“…A self-consistent two-dimensional fluid model is employed to investigate the coaxial–coplanar dielectric-barrier discharge (DBD) excited by the sinusoidal voltage in atmospheric helium. Simulation results show that there are two current pulses in the positive half cycle, but only one in the negative half cycle. …”
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Comparison of ion cyclotron wall conditioning discharges in hydrogen and helium in JET by Y. Kovtun, T. Wauters, D. Matveev, R. Bisson, I. Jepu, S. Brezinsek, I. Coffey, E. Delabie, A. Boboc, T. Dittmar, A. Hakola, P. Jacquet, K. Kirov, E. Lerche, J. Likonen, E. Litherland-Smith, T. Loarer, P. Lomas, C. Lowry, E. Pawelec, C. Perez von Thun, A. Meigs, M. Maslov, I. Monakhov, C. Noble, S. Silburn, H. Sun, D. Taylor, E. Tsitrone, A. Widdowson, H. Sheikh, D. Douai

“…This paper explores the plasma parameters of helium and hydrogen Ion Cyclotron Wall Conditioning (ICWC) discharges performed in JET as part of a He/H fuelling changeover experiment. …”
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The effect of low-level helium-neon laser on oral wound healing by Farimah Sardari, Farzaneh Ahrari

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Temperature-dependent quantum pair potentials and ionization in Helium-like plasmas by H. Rahal, C. Deutsch, M.M. Gombert

“… Diffraction corrected effective and Coulombic electron-ion interaction are worked out for helium like ions in plasmas of warm dense matter (WDM) and chemically-reacting concern, through explicit wave functions derived within an appropriate quantum defect framework. …”
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Multi-Component Adsorption Studies on LiLSX and CMS for Helium Separation by Nisith Kr. Das, Pradeep Kumar, C. Mallik, Rakesh K. Bhandari

“…An experimental study is reported on the purification of helium gas from a ternary mixture of helium (30 mol%), nitrogen (60 mol%) and oxygen (10 mol%) employing a single-column Pressure Swing Adsorption (PSA) process. …”
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Line-shape broadening of an autoionizing state in helium at high XUV intensity by Lennart Aufleger, Patrick Friebel, Patrick Rupprecht, Alexander Magunia, Thomas Ding, Marc Rebholz, Maximilian Hartmann, Christian Ott, Thomas Pfeifer

“…We study the interaction of intense extreme ultraviolet (XUV) light with the 2s2p doubly excited state in helium. In addition to previously understood energy-level and phase shifts, high XUV intensities may lead to other absorption-line-shape distortions. …”
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Microstructure and Magnetism of Heavily Helium-Ion Irradiated Epitaxial Iron Films by Yasuhiro Kamada, Daiki Umeyama, Tomoki Oyake, Takeshi Murakami, Kazuyuki Shimizu, Satomi Fujisaki, Noriyuki Yoshimoto, Kazuhito Ohsawa, Hideo Watanabe

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Identification of a Helium Donor Star in NGC 247 ULX-1 by Changxing Zhou, Hua Feng, Fuyan Bian

“…This is the first evidence for the presence of a helium donor star in ULXs, consistent with a prediction that helium donor stars may be common in ULXs. …”
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Study on key parameters design of small helium xenon cooled reactor by HU Wenzhen, DENG Jian, LIU Xiaojing, LI Zhongchun, XUE Bing

Subjects: “…helium-xenon cooled reactors…”
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Resonant two-photon ionization of helium atoms studied by attosecond interferometry by L. Neoričić, D. Busto, D. Busto, H. Laurell, R. Weissenbilder, M. Ammitzböll, S. Luo, J. Peschel, H. Wikmark, J. Lahl, S. Maclot, R. J. Squibb, S. Zhong, P. Eng-Johnsson, C. L. Arnold, R. Feifel, M. Gisselbrecht, E. Lindroth, A. L’Huillier

“…We study resonant two-photon ionization of helium atoms via the 1s3p, 1s4p and 1s5p1P1 states using the 15th harmonic of a titanium-sapphire laser for the excitation and a weak fraction of the laser field for the ionization. …”
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Helium recovery from natural gas over CC3 membranes by Keerthana Krishnan, Ashley L. Potter, Carolyn A. Koh, Moises A. Carreon

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Two-dimensional Brownian motion of active particle on superfluid helium surface by Roman E. Boltnev, Mikhail M. Vasiliev, Oleg F. Petrov

“…Abstract We report an experimental study of the 2D dynamics of active particles driven by quantum vortices on the free surface of superfluid helium at T = 1.45 К. The particle motion at short times (< 25 ms) relates to anomalous diffusion mode typical for active particles, while for longer times it corresponds to normal diffusion mode. …”
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Research Paper: Implantation of Helium in Polyethylene and Polystyrene to Improve Wettability of Surfaces by Parisa Ahmadi, Masoud Mahjour-Shafiei, Mohammad Reza Mohammadizadeh

“…In this research, improvement in hydrophilicity of the surfaces of polyethylene and polystyrene samples with implantation of helium ion was studied. A 10 µA helium ion beam with an energy of 10 keV delivered by the department of physics university of Tehran’s electrostatic accelerator was used. …”
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Thermoelastohydrodynamic Characteristics of Low-Temperature Helium Gas T-Groove Face Seals by Delei Zhu, Jing Yang, Shaoxian Bai

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Imaging quantized vortex rings in superfluid helium to evaluate quantum dissipation by Yuan Tang, Wei Guo, Hiromichi Kobayashi, Satoshi Yui, Makoto Tsubota, Toshiaki Kanai

“…Here we report a visualization study of quantized vortex rings propagating in superfluid helium. By examining how the vortex rings spontaneously decay, we provide decisive data to identify the model that best reproduces observations. …”
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Regional Ventilation and Aerosol Deposition with Helium-Oxygen in Bronchoconstricted Asthmatic Lungs by Winkler, Tilo, Harris, Robert Scott, Kelly, Vanessa Jane, Kone, Mamary, Katz, Ira, Martin, Andrew, Caillibotte, George, Hess, Dean R., Venegas, Jose G., Greenblatt, Elliot

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Broad ion energy distributions in helicon wave-coupled helium plasma by Woller, Kevin Benjamin, Whyte, Dennis G, Wright, Graham

“…Helium ion energy distributions were measured in helicon wave-coupled plasmas of the dynamics of ion implantation and sputtering of surface experiment using a retarding field energy analyzer. …”
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