Article
Materials Science, Multidisciplinary
Marat Kaikanov, Dosbol Nauruzbayev, Alshyn Abduvalov, Kanat Baigarin
Summary: The generation of intense pulsed ion beam (IPIB) was investigated at reduced impedance of a magnetically insulated ion diode. The goal was to obtain IPIB with adjustable parameters at low current densities. By varying the diode impedance through the external magnetic field current, the IPIB with a current density in the range from 25 to 4 A/cm2 was achieved. The results allow for irradiating samples in a single vacuum cycle without changing the charging voltage of both magnetic field and accelerating voltage generators.
Article
Instruments & Instrumentation
Mofei Xu, Shicheng Kuang, Xiang Yu, Shijian Zhang, Sha Yan, Gennady Efimovich Remnev, Xiaoyun Le
Summary: We investigated the effect of magnetic field in the A-C gap of a radial focusing external magnetically insulated diode on the emission behavior of IPIB. The non-uniform magnetic field distribution induced stronger ion emission at the outer ring area of the anode, leading to more serious depletion of the anode outer ring. The experimental results showed that the diode voltage and ion beam density increased with the increase of magnetic field.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2023)
Article
Physics, Fluids & Plasmas
Shubo Li, Chengxun Yuan, Iya P. Kurlyandskaya, V. Demidov, M. E. Koepke, Jingfeng Yao, Zhongxiang Zhou
Summary: A single magnetically insulated baffled probe (MIBP) was used to study oscillations in a magnetized plasma. The study showed that the single MIBP can provide useful information about oscillation amplitudes, cross-coherency, and cross-phase. It also explained how to determine the maximum and minimum possible values of electron temperature fluctuations for cases with two types of oscillations.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2022)
Article
Physics, Multidisciplinary
Gong Zhen-Zhou, Wei Hao, Fan Si-Yuan, Sun Feng-Ju, Wu Han-Yu, Qiu Ai-Ci
Summary: This paper develops a transmission line circuit model for a magnetically insulated transmission line (MITL) system and analyzes the current loss characteristics and ion emission of multi-level MITL. The study provides insights into the spatiotemporal distribution of current loss and ion current in different regions, as well as the characteristics of electron emission.
ACTA PHYSICA SINICA
(2022)
Article
Physics, Multidisciplinary
Zhen-Zhou Gong, Hao Wei, Si-Yuan Fan, Ya-Ping Hong, Han-Yu Wu, Ai-Ci Qiu
Summary: This article mainly discusses the design and parameters of the magnetically-insulated transmission-line (MITL) system in the 15-MA driver and their influence on current transmission and convergence. Through calculation and establishing an equivalent circuit model, the study shows that the impedance at the end of the outer-MITL has a significant effect on the current, with an increase in impedance leading to a decrease in current. Additionally, the minimum gap of the outer-MITL and the radius of the PHC location also have an influence on the current.
ACTA PHYSICA SINICA
(2023)
Article
Instruments & Instrumentation
Cong Quan, Dunlu Sun, Huili Zhang, Jianqiao Luo, Yang Qiao, Kunpeng Dong, Yuwei Chen, Zhentao Wang, Hongyuan Li, Maojie Cheng, Qingli Zhang
Summary: High-quality Er,Pr:YAP crystals with two different Pr3+ concentrations were successfully grown, and it was found that reducing the Pr3+ concentration can improve the luminescence and laser performance.
INFRARED PHYSICS & TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Mohit Kumar Sing, Manpuran Mahto, Pradip Kumar Jain
Summary: In this article, the authors investigate the electromagnetic characteristics and performance improvement of a bifrequency magnetically insulated line oscillator with ridge-disk-loaded vanes. The results show that the ridge structure significantly enhances the coupling impedance and power efficiency of the oscillator. Simulation results provide insights into the RF performance of the device under specific operating conditions.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2022)
Article
Engineering, Electrical & Electronic
Xiaoyu Wang, Yuwei Fan, Ting Shu, Baoping Yang, Xu Xu, Ankun Li, Zeyang Liu, Haodong Xu
Summary: The experimental results demonstrate that incorporating ridged disk vanes in a magnetically insulated transmission line oscillator (RMILO) results in higher power efficiency and microwave power output compared to a conventional MILO (CMILO) under the same conditions. The RMILO outperforms the CMILO in terms of power efficiency and microwave power output at high voltage and current levels.
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
(2021)
Article
Physics, Applied
Ji Jiang, M. V. Milosevic, Yong-Lei Wang, Zhi-Li Xiao, F. M. Peeters, Qing-Hu Chen
Summary: A strong superconducting diode effect is observed in a thin superconducting film with periodic nanostructures of magnetic dots. The effect is caused by dissipation, activated by the current, being mitigated by vortex-antivortex pairs that periodically nucleate under the dots. By reversing the polarity of the applied current, the nucleation of vortex-antivortex pairs is suppressed, allowing the system to remain in a superconducting state even at higher currents, resulting in a pronounced diodic response. Dissipative Ginzburg-Landau simulations provide detailed information on the involved processes and reliable ranges for experimental realization of this nonvolatile superconducting diode, which functions without an applied magnetic field and is designed to exhibit fluxonics.
PHYSICAL REVIEW APPLIED
(2022)
Article
Chemistry, Multidisciplinary
Oliver Dowinton, Denis Maryenko, Rodion Vladimirovich Belosludov, Bohm-Jung Yang, Mohammad Saeed Bahramy
Summary: 2D phases of matter have brought a wealth of novel quantum phenomena and device applications. This study presents a non-traditional method to realize a quasi-2D electron gas in a 3D bulk oxide perovskite, with magnetically controllable topological spin textures. The anomalous Hall effect and quantum oscillations in charge conductivity and thermoelectric properties are proposed as routes to experimentally demonstrate the quasi-2D behavior.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Physics, Applied
Chao Zhong, Hong Li, Yanlin Hu, Zhaoyu Wang, Yongjie Ding, Liqiu Wei, Daren Yu
Summary: A magnetically shielded Hall thruster (MSHT) has a longer service life than a conventional unshielded Hall thruster (USHT) due to the shifting of the magnetic field. This study demonstrates that the radial position of the externally mounted hollow cathode has a different influence on the performance of the MSHT compared to the USHT. In addition, the study introduces the concept of electron cross-field transport loss, which was not previously considered.
APPLIED PHYSICS LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Jinlei Li, Pingping Chen, Jianyan Liu, Mingjian Pan, Qi Chen, Peiling Cui
Summary: This article investigates and analyzes the problem of unbalanced vibration in magnetically suspended rotor systems, proposes a dynamic modeling method, and reveals the laws of rotor self-centering effect and unbalanced vibration force.
IEEE SENSORS JOURNAL
(2023)
Article
Engineering, Aerospace
Neethu Theresa Willington, Anu Varghese, A. C. Saritha, Ninan Sajeeth Philip, Chandu Venugopal
Summary: The study investigates the formation of ion acoustic shocklets in a plasma of solar and cometary electrons, highlighting the key role played by the spectral index of cometary electrons. The findings help in understanding the in-situ measurements of shock waves in cometary plasmas.
ADVANCES IN SPACE RESEARCH
(2021)
Article
Chemistry, Analytical
Yoshiki Soda, Eric Bakker
Summary: A new colorimetric method is presented in this article, allowing for the mapping of deprotonation degree in two dimensions through image analysis, which is then used to obtain spatially resolved ion concentration. The method is successfully applied to observe potassium ion diffusion in agarose gel.
ANALYTICA CHIMICA ACTA
(2021)
Article
Biochemical Research Methods
Vinit Kumar Yadav, Preetha Ganguly, Prashant Mishra, Samaresh Das, Dhiman Mallick
Summary: This study developed a versatile magnetic microfluidic device for concentration-dependent compartmentalization of a magnetically controlled anticancer drug. By optimizing the microfluidic design and magnet configuration, predictable concentration control and gradient generation were achieved. The results of drug screening and cytotoxicity testing using the device were consistent with traditional methods.
Article
Physics, Applied
A. I. Pushkarev, Y. I. Isakova, A. I. Prima
LASER AND PARTICLE BEAMS
(2018)
Article
Engineering, Multidisciplinary
Yu. I. Isakova, A. I. Prima, X. P. Zhu, L. Ding, A. I. Pushkarev, M. K. Lei
INSTRUMENTS AND EXPERIMENTAL TECHNIQUES
(2019)
Article
Chemistry, Physical
P. M. Korusenko, S. N. Nesov, V. V. Bolotov, S. N. Povoroznyuk, Yu A. Sten'kin, A. Pushkarev, E. O. Fedorovskaya, D. A. Smirnov
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Physics, Applied
A. Pushkarev, X. P. Zhu, A. Prima, Yu Egorova, M. K. Lei
LASER AND PARTICLE BEAMS
(2019)
Article
Engineering, Multidisciplinary
Yu. I. Isakova, A. I. Prima, A. I. Pushkarev
INSTRUMENTS AND EXPERIMENTAL TECHNIQUES
(2019)
Article
Instruments & Instrumentation
A. Pushkarev, X. P. Zhu, C. C. Zhang, A. Prima, Y. Li, Yu. Egorova, M. K. Lei
REVIEW OF SCIENTIFIC INSTRUMENTS
(2019)
Article
Physics, Multidisciplinary
S. A. Ghyngazov, Xiao Peng Zhu, A. Pushkarev, Yu Egorova, S. Matrenin, V. A. Kostenko, C. C. Zhang, Mingkai Lei
RUSSIAN PHYSICS JOURNAL
(2020)
Review
Engineering, Multidisciplinary
A. I. Pushkarev, A. I. Prima, Yu. I. Egorova, V. V. Ezhov
INSTRUMENTS AND EXPERIMENTAL TECHNIQUES
(2020)
Article
Physics, Applied
A. Pushkarev, A. Prima, V Ezhov, I Miloichikova, E. Petrenko
Summary: The study presents the algorithm and results of calculating the integral and differential energy spectra of a pulsed electron beam generated by direct-action accelerators. Analysis showed that there is a discrepancy in the integrated electron beam energy spectrum when different methods are used to measure the electron spectrum, especially when using the one-dimensional Child-Langmuir ratio.
LASER AND PARTICLE BEAMS
(2021)
Article
Physics, Applied
A. Pushkarev, A. Prima, V Myshkin, N. Chistyakova, V Ezhov
Summary: A comparative analysis was conducted to investigate the effects of fast atom beams and ion beams on a metal target, and it was found that fast atoms closely resemble neutron radiation in terms of radiation defect formation. Irradiation by fast carbon atoms leads to a significantly higher number of radiation defects compared to ions with the same energy, and the probability of atom ionization during penetration is negligible for energies lower than 0.4 MeV.
LASER AND PARTICLE BEAMS
(2021)
Article
Physics, Fluids & Plasmas
A. I. Pushkarev, X. P. Zhu, Yu. I. Egorova, A. Prima, S. S. Polisadov, M. K. Lei
Summary: The study presents the results of simulation and experimental investigation on the generation of high-power ion beams in an ion diode with a passive anode. It is found that a diode with a metal anode primarily generates nitrogen ions and suppresses the generation of heavier ions. The suppression of heavy ions is caused by the higher diffusion rate of light ions in the anode plasma.
PLASMA PHYSICS REPORTS
(2022)
Article
Materials Science, Multidisciplinary
A. I. Pushkarev, X. P. Zhu, Y. I. Egorova, S. I. Polisadov, M. K. Lei
Summary: This paper presents the results of a study on pulsed proton beam generation using a diode with metal anodes. The experiment analyzed the ion beam parameters through infrared imaging and time-of-flight diagnostics. It was found that continuous supply of hydrogen into a hollow anode and specific hydrogen pressure in the diode chamber resulted in a proton content of over 80% in the beam. Increasing the pulse duration led to higher ion current density and energy density at the focus. Various mechanisms of proton beam generation were examined, including ions acceleration from gas plasma and explosive emission plasma from metal anodes.
Article
Multidisciplinary Sciences
Petr M. Korusenko, Sergey N. Nesov, Sergey N. Povoroznyuk, Valery V. Bolotov, Yuri Sten'kin, Alexander I. Pushkarev, Ekaterina O. Fedorovskaya, Dmitry A. Smirnov, Konstantin E. Ivlev
Article
Physics, Applied
X. P. Zhu, Q. Zhang, L. Ding, C. C. Zhang, Yu Isakova, A. Prima, A. Pushkarev, M. K. Lei
LASER AND PARTICLE BEAMS
(2018)
Article
Physics, Condensed Matter
P. M. Korusenko, S. N. Nesov, S. N. Povoroznyuk, V. V. Bolotov, E. V. Knyazev, A. I. Pushkarev, D. A. Smirnov
PHYSICS OF THE SOLID STATE
(2018)
