Article
Optics
Vladimir A. Yerokhin, Vojtech Patkos, Krzysztof Pachucki
Summary: We performed ab initio calculations of the QED effects for the 2 3S and 2 3P states of He-like ions at the order of m alpha 7. By combining the computed effects with previously calculated energies, the theoretical accuracy has been improved significantly. The obtained results for the transition energies agree well with experiment and previous calculations, while some inconsistency is observed for the ionization energies, possibly related to the theoretical-experimental discrepancy in helium ionization energies.
Article
Optics
Vladimir A. Yerokhin, Vojtech Patkos, Krzysztof Pachucki
Summary: This paper presents a calculation of two-electron QED effects to all orders in the nuclear binding strength parameter Z alpha for the ground and n = 2 excited states of helium-like ions. The higher-order QED effects of order m alpha 7 and higher are identified after subtracting the first terms of the Z alpha expansion from the all-order results. The most accurate theoretical predictions for the ground and non-mixing n = 2 states of helium-like ions with Z = 5-30 are obtained by combining the higher-order remainder with the results complete through order m alpha 6 from a previous study.
Article
Chemistry, Multidisciplinary
Dong-Yeob Han, Im Kyung Han, Hye Bin Son, Youn Soo Kim, Jaegeon Ryu, Soojin Park
Summary: This study introduces a layering-charged polymeric binder that effectively integrates high-capacity anodes using reversible Coulomb interaction and enriched hydrogen bonding. The charged polymeric binder forms a dynamically charge-directed network on the active materials and efficiently dissipates electrode stress with its excellent mechanical properties. Furthermore, the poly(ethylene glycol) moieties of the binder offer a fast Li-ion conduction pathway that allows for the formation of a thick SiOx-based electrode without compromising reversible capacity.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Yuzhong Yao, Jie Zhang, Rahul Pandey, Di Wu, Wei Kong, Lan Xue
Summary: The experimental results showed that the relative abundance of Ar+ in the mass spectra of argon clusters increases significantly with increasing laser intensity, while the distribution of MCAIs remains constant. Additionally, the arrival time width of Ar+ increases with laser intensity, in contrast to the MCAIs which exhibit a constant width. These findings indicate the need for further theoretical investigations into the laser-matter interactions in this regime.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Optics
Konstantin N. Lyashchenko, Oleg Yu Andreev, Deyang Yu
Summary: In this theoretical study, the process of two-electron one-photon (TEOP) transitions in a He-like sequence of atomic ions from boron to uranium is considered. Transition probabilities and energies are calculated within the Quantum Electrodynamics (QED) theory, with calculations performed in various gauges. The intensity ratios between TEOP transitions and other major transitions are presented.
Article
Physics, Multidisciplinary
Naoki Kimura, Yasutaka Priti, Yasutaka Kono, Pativate Pipatpakorn, Keigo Soutome, Naoki Numadate, Susumu Kuma, Toshiyuki Azuma, Nobuyuki Nakamura
Summary: Hyperfine structures of highly charged ions (HCIs) are important for exploring fundamental physics and nuclear properties. However, experimental difficulties have hindered the development of hyperfine spectroscopy of many-electron HCIs. This study demonstrates hyperfine-structure-resolved laser spectroscopy of HCIs using an electron beam ion trap plasma, providing a benchmark for atomic calculations and potential for unexploited experiments.
COMMUNICATIONS PHYSICS
(2023)
Article
Physics, Nuclear
Yury A. Litvinov, Rui Jiu Chen
Summary: Decay properties in neutral atoms can change significantly when most or all bound electrons are removed. Fully-ionized nuclei disable decay channels involving electrons, and hindered or blocked decay modes in neutral atoms may become dominant or open up in highly charged ions. Few-electron ions are clean systems with well-defined quantum numbers, enabling investigations of the influence of atomic shell on nuclear decay properties.
EUROPEAN PHYSICAL JOURNAL A
(2023)
Article
Chemistry, Multidisciplinary
Emeline Hanozin, Conner C. C. Harper, Matthew S. S. McPartlan, Evan R. R. Williams
Summary: Charge detection mass spectrometry is used to study the spontaneous fission of charged aqueous nanodrops, and it is found that the fission process varies and produces different numbers of progeny droplets over a range of 2-100+ ms. While the fission of micron-sized charged droplets has been studied using optical methods, little is known about the dynamics and breakup of smaller nanosized droplets, which play a crucial role in natural and industrial processes. In this study, the spontaneous fission of individual charged nanodrops formed by electrospray is investigated, and it is observed that the fission processes range from the formation of two progeny droplets in 2 ms to the production of dozens of progeny droplets over 100+ ms for nanodrops that are charged above the Rayleigh limit. These findings suggest that Rayleigh fission is a continuum of processes that result in progeny droplets with varying charge, mass, and number.
ACS CENTRAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Alexander Sagar Grossek, Anna Niggas, Richard A. Wilhelm, Friedrich Aumayr, Christoph Lemell
Summary: We provide the first qualitative description of the atomic dynamics in 2D materials induced by slow, highly charged ions. By combining classical molecular dynamics simulation and Monte Carlo model, we investigate the impact of charge transfer velocity and extracted electron number on the stability of 2D structure and nanopore formation due to Coulomb repulsion.
Review
Physics, Multidisciplinary
Xinwen Ma, Shaofeng Zhang, Weiqiang Wen, Zhongkui Huang, Zhimin Hu, Dalong Guo, Junwen Gao, Bennaceur Najjari, Shenyue Xu, Shuncheng Yan, Re Yao, Ruitian Zhang, Yong Gao, Xiaolong Zhu
Summary: This article reviews the research progress in atomic structure and collision dynamics with highly charged ions using heavy ion storage rings and electron ion beam traps in the past 20 years. The research covers quantum electrodynamics, electron correlation, charge exchange dynamics, ion-induced fragmentation mechanisms, interference, and phase information in ion-atom/molecule collisions. The article also discusses theoretical studies and applications of data related to highly charged ions, and proposes future research prospects.
Article
Quantum Science & Technology
K. Blaum, S. Eliseev, S. Sturm
Summary: In Penning traps, electromagnetic forces are utilized to confine charged particles for extended periods, allowing for precise measurements of fundamental constants and interactions. Various methods such as cooling can reduce the energy of trapped particles, enabling high-precision spectroscopy with highly charged ions.
QUANTUM SCIENCE AND TECHNOLOGY
(2021)
Article
Optics
Xiao-Min Tong, Xiang Gao, Daiji Kato, Nobuyuki Nakamura
Summary: We systematically study the polarization of x-rays emitted during the capture of a free electron by highly charged Be-like ions using theoretical methods. We focus on the dielectronic recombination of the J=1/2 -> J=1/2 transition, which has zero polarization due to axial symmetry. By including the interference between dielectronic and radiative recombinations, we observe a significant change in polarization when the electron energy crosses the resonant energy. Comparing simulations with and without certain interactions, we find that the Breit interaction is not important for high-Z ions, while the configuration interaction of the dielectronic recombination states greatly affects polarization for low-Z ions.
Article
Optics
Saleh O. Allehabi, S. M. Brewer, V. A. Dzuba, V. V. Flambaum, K. Beloy
Summary: This study identifies laser-accessible transitions in highly charged ions as candidates for high-accuracy optical clocks, showcasing their importance in optical clock development.
Article
Optics
Shi-Yong Liang, Ting-Xian Zhang, Hua Guan, Qi-Feng Lu, Jun Xiao, Shao-Long Chen, Yao Huang, Yong-Hui Zhang, Cheng-Bin Li, Ya-Ming Zou, Ji-Guang Li, Zong-Chao Yan, Andrei Derevianko, Ming-Sheng Zhan, Ting-Yun Shi, Ke-Lin Gao
Summary: This study proposes an experimental strategy focused on nickel HCIs, identifying multiple optical transitions that are inherently immune to common perturbations of quantum oscillators. The experimental results demonstrate remarkable frequency uncertainty levels and highlight the importance of these measurements for fundamental physics applications.
Article
Physics, Multidisciplinary
S. Ringleb, M. Kiffer, N. Stallkamp, s Kumar, J. Hofbrucker, B. Reich, B. Arndt, G. Brenner, M. Ruiz-Lopez, S. Duester, M. Vogel, K. Tiedtke, W. Quint, Th Stoehlker, G. G. Paulus
Summary: We have developed the HILITE setup for the production and preparation of highly charged ions in a defined quantum state as a target for high-intensity lasers. The setup has been used for experiments at the FLASH Free-Electron Laser facility in Germany, and we discuss the experimental possibilities and future experiments at other laser facilities.
