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The analytic form of the electrostatic potential felt by a slowly moving test charge in quantum plasma is being derived. It has been shown that the potential composed of two parts: Debye-Huckel screening term and near-field wake potential…

原子物理 · 物理学 2014-12-02 S. Dutta , J. K. Saha , T. K. Mukherjee

The analytical and numerical investigations of the energy loss rate of the test particle in a magnetized electron plasma are developed on the basis of the Vlasov-Poisson equations, and the main results are presented. The Larmor rotation of…

等离子体物理 · 物理学 2009-10-31 H. B. Nersisyan

We present a theory to describe the instantaneous emission rate of electron transport in quantum-coherent conductors. Due to the Pauli exclusion principle, electron emission events are usually correlated. This makes the emission rate is not…

介观与纳米尺度物理 · 物理学 2023-06-14 Y. Yin

Data for inelastic processes due to hydrogen atom collisions with manganese and titanium are needed for accurate modeling of the corresponding spectra in late-type stars. In this work excitation and charge transfer in low-energy Mn+H and…

太阳与恒星天体物理 · 物理学 2020-05-13 Jon Grumer , Paul S. Barklem

In a dense plasma environment, the energy levels of an ion shift relative to the isolated ion values. This shift is reflected in the optical spectrum of the plasma and can be measured in, for example, emission experiments. In this work, we…

等离子体物理 · 物理学 2024-09-11 T. Q. Thelen , D. A. Rehn , C. J. Fontes , C. E. Starrett

We demonstrate a Wiley-McClaren Time of Flight Mass Spectrometer modified to allow direct extraction of ions from a laser-induced plasma. Unlike many other methods that utilize mass spectrometry to investigate laser-induced plasmas, no…

等离子体物理 · 物理学 2020-10-21 James O. F. Thompson , S. Tahereh Alavi , Justin R. Walensky , Arthur G. Suits

Charge dynamics in an ultra-cold setup involving a laser dressed atom and an ion is studied here. This transfer of charge is enabled through molecular Rydberg states that are accessed via a laser. The character of the charge exchange…

原子物理 · 物理学 2019-07-17 Rick Mukherjee

We present a method to measure the kinetic energy of electrons emitted upon ion impact via their time-of-flight. Pulsed beams of H$^{+}$, D$_2^{+}$, He$^{+}$ and Ne$^{+}$ ions with velocities between 0.4 and 3.5 a.u. are transmitted through…

仪器与探测器 · 物理学 2020-08-26 Svenja Lohmann , Anna Niggas , Vincent Charnay , Radek Holeňák , Daniel Primetzhofer

The unified 3D phase-field model for the description of the lithium-ion cell as a whole is developed. The model takes into account the realistic distribution of particles in porous electrodes, percolative transport of ions, and the…

无序系统与神经网络 · 物理学 2021-05-11 Pavel E. L'vov , Mikhail Yu. Tikhonchev , Renat T. Sibatov

High-resolution tunable laser spectroscopy is used to measure time-resolved absorption spectra for ten neutral uranium transitions and six singly-ionized transitions in a laser produced plasma. Spectral lineshapes are analyzed to determine…

等离子体物理 · 物理学 2025-03-04 Ryland G. Wala , Mathew P. Polek , Sivanandan S. Harilal , R. Jason Jones , Mark C. Phillips

We develop a projection imaging technique to study ultracold plasma dynamics. We image the charged particle spatial distributions by extraction with a high-voltage pulse onto a position-sensitive detector. Measuring the 2D width of the ion…

等离子体物理 · 物理学 2009-11-13 X. L. Zhang , R. S. Fletcher , S. L. Rolston

Astrophysical shocks or bursts from a photoionizing source can disturb the typical collisional plasma found in galactic interstellar media or the intergalactic medium. The spectrum emitted by this plasma contains diagnostics that have been…

高能天体物理现象 · 物理学 2015-05-19 Randall K. Smith , John P. Hughes

Electron Capture (EC) cross-section from K, L and M shells of the target atoms to the vacant K, L and M shells of the projectile ions have been calculated by deriving the accurate momentum transfer to the captured electrons for different…

原子物理 · 物理学 2024-07-03 Sumana Ghosh , Debasis Mitra , Soumya Chatterjee

Self-trapping and acceleration of ions in laser-driven relativistically transparent plasma are investigated with the help of particle-in-cell simulations. A theoretical model based on ion wave breaking is established in describing ion…

等离子体物理 · 物理学 2019-04-02 B. Liu , J. Meyer-ter-Vehn , H. Ruhl

As first proposed by Gruzinov, a charged particle moving in strong electromagnetic fields can enter an equilibrium state where the power input from the electric field is balanced by radiative losses. When this occurs, the particle moves at…

高能天体物理现象 · 物理学 2023-09-19 Yangyang Cai , Samuel E. Gralla , Vasileios Paschalidis

A completely rigorous first-principles calculation of the charged particle stopping power has recently been performed by Brown, Preston, and Singleton (BPS). This calculation is exact to leading and next-to-leading order in the plasma…

等离子体物理 · 物理学 2008-02-21 Robert L. Singleton

Ionization injection in a plasma wakefield accelerator was investigated experimentally using two lithium plasma sources of different lengths. The ionization of the helium gas, used to confine the lithium, injects electrons in the wake.…

The results of a theoretical investigation of the energy loss of charged particles in a magnetized classical plasma due to the electric field fluctuations are reported. The energy loss for a test particle is calculated through the…

等离子体物理 · 物理学 2015-05-27 Hrachya B. Nersisyan , Claude Deutsch

Relevant uncertainties on theoretical atomic data are vital to determine the accuracy of plasma diagnostics in a number of areas including in particular the astrophysical study. We present a new calculation of the uncertainties on the…

高能天体物理现象 · 物理学 2022-01-19 Liyi Gu , Chintan Shah , Ruitian Zhang

Understanding and predicting the energy loss of swift ions in metals is important for many applications of charged particle beams, such as analysis and modification of materials, and recently for modelling metal nanoparticle…

其他凝聚态物理 · 物理学 2022-11-30 Isabel Abril , Pablo de Vera , Rafael Garcia-Molina