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Atoms, Volume 13, Issue 2

February 2025 - 13 articles

Cover Story: The high-resolution X-ray spectroscopy of He-like ions has proven to be a very useful tool for determining various parameters in tokamak plasma devices. In particular, the measurements in the X-ray spectra of He-like Ni ions and their dielectronic satellites (Li-, Be-, and B-like) play a pivotal role in the determination of the electron and ion temperature and the toroidal rotation of JET plasmas (KX1 diagnostic). The dielectronic satellites of Ni²⁵⁺ overlap with the resonance line of Ni²⁶⁺, making it crucial to reliably reconstruct the structure of these satellites. In this work, we examine the quality of the theoretical description of such lines, including the electron correlation effect and the collisional–radiative modelling setup. View this paper

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Article

1,107 Views

18 Pages

Calculated Transition Probabilities for Os VI Spectral Lines of Interest to Nuclear Fusion Research

Maxime Brasseur,
Patrick Palmeri and
Pascal Quinet

Atoms2025, 13(2), 11;https://doi.org/10.3390/atoms13020011

21 January 2025

In this work, we present a new set of transition probabilities for experimentally classified spectral lines in the Os VI spectrum. To do this, two independent computational approaches based on the pseudo-relativistic Hartree–Fock, including cor...

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Communication

833 Views

6 Pages

Lithium-like O⁵⁺ Emission near 19 Å

Jaan K. Lepson,
Gregory V. Brown,
Joel H. T. Clementson,
Alexander J. Fairchild,
Ming Feng Gu,
Natalie Hell,
Elmar Träbert and
Peter Beiersdorfer

Atoms2025, 13(2), 10;https://doi.org/10.3390/atoms13020010

21 January 2025

Using a high-resolution grating spectrometer on the Livermore EBIT-I electron beam ion trap, we have measured three n=3,4→n=1 K-shell emission lines in lithium-like O5+, which are situated near the O VIII Lyman-α lines at 19 Å. Two o...

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Article

1 Citations

2,606 Views

11 Pages

Density Functional Theory Study of Hydrogen Adsorption on Al-U Alloy Surfaces

Xiaoting Wang,
Min Guan,
Duo You,
Dong Xie,
Mingxi Hou and
Yongxiang Leng

Atoms2025, 13(2), 9;https://doi.org/10.3390/atoms13020009

21 January 2025

To better understand the hydrogen corrosion mechanism on uranium surfaces and assess the hydrogen penetration resistance of Al-U alloys, the adsorption of hydrogen atoms on U(110), Al(111), and nAl/U(110) alloy surfaces was systematically studied thr...

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