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Channel wall sheath thickness in an anode-layer Hall thruster RAIJIN66 was investigated by a two-dimensional hybrid simulation and a one-dimensional sheath model. A hybrid particle-fluid model with the quasineutrality assumption was used to…

Plasma Physics · Physics 2023-12-18 Rei Kawashima

The temporal characteristics of the Xe$^+$ ion axial Velocity Distribution Function (VDF) were recorded in the course of low-frequency discharge current oscillations ($\sim$~14 kHz) of the 5 kW-class PPS$\circledR$X000 Hall thruster. The…

Plasma Physics · Physics 2009-02-10 S. Mazouffre , D. Gawron , N. Sadeghi

Previous experimental studies have found that the neutral gas rotational flow in the opposite direction of electron Hall drift can lead to better experimental results comparing to the same direction. In Hall thrusters, the core factor…

Plasma Physics · Physics 2025-08-29 Zhijun Zhou , Lihuan Xie , Xin Luo , Yinjian Zhao , Daren Yu

We present a study of the performance of the trapped-ion driven geometric phase gates introduced in [New J. Phys. 15, 083001 (2013)] when realized in a stimulated Raman transition. We show that the gate can achieve errors below the…

Quantum Physics · Physics 2013-12-12 A. Lemmer , A. Bermudez , M. B. Plenio

Significant beam loss caused by the charge exchange processes and ions impact induced outgassing play a crucial role in the limitation of the maximum number of accumulated heavy ions during the high intensity operation in the accelerators.…

Accelerator Physics · Physics 2015-06-22 Wenheng Zheng , Jiancheng Yang , Peng Li , Zhongshan Li , Peng Shang , Guofeng Qu , Wenwen Ge , Meitang Tang , Xiaoping Sha

Gated wires are widely used in Time Projection Chamber (TPC) to avoid ion back-flow (IBF) in the drift volume. The anode wires can provide stable gain at high voltage with a long lifetime. However, switching on and off the gated grid (GG)…

Instrumentation and Detectors · Physics 2019-07-24 Shuai Wang , Fuwang Shen , Xiao Zhao , Zhihang Zhu , Fangang Kong , Changyu Li , Qinghua Xu , Zhangbu Xu , Chi Yang , Chengguang Zhu

Current Induced Resistance Switching (CIS) was recently observed in thin tunnel junctions (TJs) with ferromagnetic (FM) electrodes and attributed to electromigration of metallic atoms in nanoconstrictions in the insulating barrier. The CIS…

Materials Science · Physics 2007-05-23 J. Ventura , Z. Zhang , Y. Liu , J. B. Sousa , P. P. Freitas

As gaseous detectors are operated at high rates of primary ionisation, ions created in the detector have a considerable impact on the performance of the detector. The upgraded ALICE Time Projection Chamber (TPC) will operate during LHC…

Instrumentation and Detectors · Physics 2017-05-09 Alexander Deisting , Chilo Garabatos , Alexander Szabo , Danilo Vranic

Gridded ion thrusters are tested in ground vacuum chambers to verify their performance when deployed in space. However, the presence of high background pressure and conductive walls in the chamber leads to facility effects that increase…

Plasma Physics · Physics 2023-10-05 Keita Nishii , Deborah A. Levin

Time Projection Chamber (TPC) is one of the main tracking systems for many current and future collider experiments at RHIC and LHC. It has a capability to measure the space points of charged tracks for good momentum resolution as well as…

Instrumentation and Detectors · Physics 2019-12-30 K. Dehmelt , P. Garg , T. K. Hemmick , A. Milov , E. Shulga , V. Zakharov

Ultra-thin magnetic tunnel junctions with low resistive MgO tunnel barriers are prepared to examine their stability under large current stress. The devices show magnetoresistance ratios of up to 110 % and an area resistance product of down…

Materials Science · Physics 2008-08-27 Patryk Krzysteczko , Xinli Kou , Karsten Rott , Andy Thomas , Günter Reiss

The ion backflow is the main limiting factor for operating time projection chambers at high event rates. A significant effort is invested by many experimental groups to solve this problem. This paper explores a solution based on operating a…

Instrumentation and Detectors · Physics 2020-12-02 Evgeny Shulga , Vladislav Zakharov , Prakhar Garg , Thomas Hemmick , Alexander Milov

The impact of 400 keV $Ar^+$ ion irradiation on the magnetic and electrical properties of in-plane magnetized magnetic tunnel junction (MTJ) stacks was investigated by ferromagnetic resonance, vibrating sample magnetometry and…

The dynamics of the positive ions created by particle interactions inside argon time projection chambers plays an important role in characterizing the next generation of massive detectors planned for the direct search for dark matter and…

Ion diffusion is a central part of materials physics of fabrication, deformation, phase transformation, structure stability and electrochemical devices. Conventional theory focuses on the defects that mediate diffusion and explains how…

Materials Science · Physics 2019-08-21 Yanhao Dong , Liang Qi , Ju Li , I-Wei Chen

We identify plain evaporation of ions as the fundamental loss mechanism out of a multipole ion trap. Using thermalized negative Cl- ions we find that the evaporative loss rate is proportional to a Boltzmann factor. This thermodynamic…

Atomic Physics · Physics 2009-11-13 J. Mikosch , U. Frühling , S. Trippel , D. Schwalm , M. Weidemüller , R. Wester

The micro-newton cusped field Hall thruster is an electric propulsion device that employs microwave-assisted ionization control. It serves as an actuator in drag-free control systems, ensuring control accuracy and stability by providing…

Plasma Physics · Physics 2026-04-23 Jiahao Wu , Ming Zeng , Hui Liu , Daren Yu

In this work we report on the role of ion transport for the dynamic behavior of a double barrier quantum mechanical Al/Al$_2$O$_3$/Nb$_{\text{x}}$O$_{\text{y}}$/Au memristive device based on numerical simulations in conjunction with…

Materials Science · Physics 2016-05-31 Sven Dirkmann , Mirko Hansen , Martin Ziegler , Hermann Kohlstedt , Thomas Mussenbrock

The cycling performance of lithium-ion batteries is closely related to the expansion effect of anode materials during charge and discharge processes. Studying the mechanical field evolution of anode materials is crucial for evaluating…

Instrumentation and Detectors · Physics 2024-07-04 Kaijun Liu , Zhijuan Zou , Guolu Yin , Yingze Song , Zeheng Zhang , Yuyang Lou , Zixuan Zhong , Huafeng Lu , Duidui Li , Tao Zhu

We consider ion transport through protein ion channels in lipid membranes and water-filled nanopores in silicon films. It is known that, due to the large ratio of dielectric constants of water and the surrounding material, an ion placed…

Soft Condensed Matter · Physics 2009-11-11 J. Zhang , A. Kamenev , B. I. Shklovskii
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