Multi-crystal native-SAD phasing at 5 keV with a helium environment by Akira Karasawa, Babak Andi, Martin R. Fuchs, Wuxian Shi, Sean McSweeney, Wayne A. Hendrickson, Qun Liu

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Helium-oxygen reduces the production of carbon dioxide during weaning from mechanical ventilation by Flynn Gordon, Mandersloot Gerlinde, Healy Marie, Saville Mark, McAuley Daniel F

“…Therefore breathing helium-oxygen during weaning may be a useful adjunct to facilitate weaning. …”
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Taking the Convergent Close-Coupling Method beyond Helium: The Utility of the Hartree-Fock Theory by Igor Bray, Xavier Weber, Dmitry V. Fursa, Alisher S. Kadyrov, Barry I. Schneider, Sudhakar Pamidighantam, Maciej Cytowski, Anatoli S. Kheifets

“…The latter allows implementation of double photoionization (DPI) of the helium atom. For more complex single valence-electron atomic and ionic targets, the direct and exchange interaction with the inner electron core needs to be taken into account. …”
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The Strength and Variability of the Helium 10830 Å Triplet in Young Stars, with Implications for Exosphere Detection by Daniel M. Krolikowski, Adam L. Kraus, Benjamin M. Tofflemire, Caroline V. Morley, Andrew W. Mann, Andrew Vanderburg

“…The He-10830 absorption strength is similar across our sample, except at the fastest and slowest rotations, indicating that young chromospheres are dense and populate metastable helium via collisions. Photoionization and recombination by coronal radiation only dominates metastable helium population at the active and inactive extremes. …”
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High frequency background gravitational waves from spontaneous emission of gravitons by hydrogen and helium by Jiawei Hu, Hongwei Yu

“…In this paper, we take the gravitons emitted by hydrogen and helium in the Universe after recombination as a possible source of high frequency background gravitational waves, and calculate the energy density spectrum. …”
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Formation of Bubble-Loop Complexes During Helium Radiation in Fe-9Cr Steel by Tiantian Shi, Wenbo Liu, Zhengxiong Su, Xu Yan, Chenyang Lu, Zhaoxi Yang, Xinfu He, Wei Yan, Di Yun, Di Yun

“…However, in regions where the helium concentration and irradiation dose are relatively low, the number of “bubble-loop complexes” significantly decreased. …”
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First-principles study on the hydrogen trapping by vacancy and substitutional helium in W–Ta alloy by XiangCao Li, RuiXuan Zhao, ChuBin Wan, TingTing Sui, Xin Ju

“…In this work, a first-principles method is performed to investigate the interaction effect of hydrogen (H) with vacancy and substitutional helium (He) in tungsten and tantalum (W–Ta) alloy (atomic ratio of 1:1). …”
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Deep Minimum and a Vortex for Positronium Formation in Low-Energy Positron-Helium Collisions by Albandari W. Alrowaily, Sandra J. Ward, Peter Van Reeth

“…We find a zero in the positronium formation scattering amplitude and a deep minimum in the logarithm of the corresponding differential cross section for positron–helium collisions for an energy just above the positronium formation threshold. …”
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Tritium retention in W plasma-facing materials: Impact of the material structure and helium irradiation by E. Bernard, R. Sakamoto, E. Hodille, A. Kreter, E. Autissier, M.-F. Barthe, P. Desgardin, T. Schwarz-Selinger, V. Burwitz, S. Feuillastre, S. Garcia-Argote, G. Pieters, B. Rousseau, M. Ialovega, R. Bisson, F. Ghiorghiu, C. Corr, M. Thompson, R. Doerner, S. Markelj, H. Yamada, N. Yoshida, C. Grisolia

“…Unfortunately, investigation of “as received” industrial W (used for the making of plasma-facing materials) highlighted a strong impact of the pre existing defects on T retention: up to 2.5 times more T is trapped in “as received W” compared to annealed and polish W, and desorbs only at 800 °C, meaning ideal W material studies may underestimate T inventory for tokamak relevant conditions. Keywords: Tungsten, Helium, Tritium inventory, Plasma-wall interactions…”
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The Plasma Characterization of Argon and Helium Gases in Inertial Electrostatic Confinement Fusion Plasma Device by H.S.Elaraby, G.M.Elaragi, H.M.Abu-zeid, Sh.M.Talaat, A.M.A.El-hadary, W.E.Madcour

“…The minimum breakdown voltages(V_b )_minare 97.82volts atPd=0.5 torr.cm and 74.72volts at Pd=2 torr.cmfor the Argon and Helium gases respectively i.e. the minimum breakdown voltages (V_b )_minfor Argon gas is higher than minimum breakdown voltages for Helium gas. …”
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Accurate Electron Drift Mobility Measurements in Moderately Dense Helium Gas at Several Temperatures by Armando Francesco Borghesani

“…We report new accurate measurements of the drift mobility <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">μ</mi></semantics></math></inline-formula> of quasifree electrons in moderately dense helium gas in the temperature range <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>26</mn><mspace width="0.166667em"></mspace><mi mathvariant="normal">K</mi><mo>≤</mo><mi>T</mi><mo>≤</mo><mn>300</mn><mspace width="0.166667em"></mspace><mi mathvariant="normal">K</mi></mrow></semantics></math></inline-formula> for densities lower than those at which states of electrons localized in bubbles appear. …”
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Maximizing the Response of a Helium Atom at the Third Harmonic of an Intense Femtosecond Ultraviolet Pulse by Ilias R. Khairulin, Mikhail Yu. Emelin, Maria M. Popova, Elena V. Gryzlova, Mikhail Yu. Ryabikin, Vladimir A. Antonov

“…The optimal regime of three-photon resonant excitation of a helium atom via a femtosecond ultraviolet (UV) pulse was discovered and numerically studied, at which the maximum power of the third harmonic of the UV field is achieved in the spectrum of dipole acceleration (the second time derivative of the induced dipole moment) of the atom. …”
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Collective Acceleration of Helium Ions from Its Residual Atmosphere in a Luce Diode by Vladislav Ryzhkov, Mikhail Zhuravlev, Gennady Remnev

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Effect of Carbon Concentration on the Sputtering of Carbon-Rich SiC Bombarded by Helium Ions by Xinghao Liang, Yang Li, Qiang Zhao, Zheng Zhang, Xiaoping Ouyang

“…Changing the carbon content in SiC can regulate and control its elastic and thermodynamic properties, but a simulation study of the effect of carbon content on the sputtering (caused by the helium ions) of SiC is still lacking. In this work, we used the Monte-Carlo and molecular dynamics simulation methods to study the effects of carbon concentration, incidence energy, incident angle, and target temperature on the sputtering yield of SiC. …”
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Coherent diffractive imaging of single helium nanodroplets with a high harmonic generation source by Daniela Rupp, Nils Monserud, Bruno Langbehn, Mario Sauppe, Julian Zimmermann, Yevheniy Ovcharenko, Thomas Möller, Fabio Frassetto, Luca Poletto, Andrea Trabattoni, Francesca Calegari, Mauro Nisoli, Katharina Sander, Christian Peltz, Marc J. Vrakking, Thomas Fennel, Arnaud Rouzée

“…Here the authors demonstrate the possibility of using table-top XUV laser sources to image prolate shapes of superfluid helium droplets.…”
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Safety of Helium-based Plasma Technology for Coagulation of Soft Tissue: A Retrospective Review by Sachin M Shridharani, MacKenzie L Kennedy

“… Abstract BackgroundThe subdermal application of energy using a helium-based plasma radiofrequency (RF) device has been shown to improve skin laxity. …”
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SN 2022joj: A Potential Double Detonation with a Thin Helium Shell by E. Padilla Gonzalez, D. A. Howell, G. Terreran, C. McCully, M. Newsome, J. Burke, J. Farah, C. Pellegrino, K. A. Bostroem, G. Hosseinzadeh, J. Pearson, D. J. Sand, M. Shrestha, N. Smith, Y. Dong, N. Meza Retamal, S. Valenti, S. Boos, K. J. Shen, D. Townsley, L. Galbany, L. Piscarreta, R. J. Foley, M. J. Bustamante-Rosell, D. A. Coulter, R. Chornock, K. W. Davis, C. B. Dickinson, D. O. Jones, J. Kutcka, X. K. Le Saux, C. R. Rojas-Bravo, K. Taggart, S. Tinyanont, G. Yang, S. W. Jha, R. Margutti

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Versatile Approach of Silicon Nanofabrication without Resists: Helium Ion-Bombardment Enhanced Etching by Xiaolei Wen, Lansheng Zhang, Feng Tian, Yang Xu, Huan Hu

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Helium and thorium isotope constraints on African dust transport to the Bahamas over recent millennia by Mukhopadhyay, Sujoy, Maloof, Adam C., Hayes, Christopher Tyler, McGee, William David, Boyle, Edward A

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Multi-scale investigations of the Resistance to helium embrittlement with Direct Energy Deposited Inconel 718 by Stapelberg, Myles Graham.

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