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An imaging system for measuring the track structure of charged particles in a low-pressure gas is presented. We describe the experimental method and compare experimental results with first results of a simulation of the chamber response.

仪器与探测器 · 物理学 2007-05-23 U. Titt , V. Dangendorf , B. Grosswendt , H. Schuhmacher

Anderson localization was first investigated in the context of electrons in solids. One of the successes was in explaining the puzzle of negative magneto-resistance - as early as the 1940s it had been observed that electron diffusion rates…

量子气体 · 物理学 2012-07-24 J. Towers , S. C. Cormack , D. A. W. Hutchinson

We address the use of entangled qubits as quantum probes to characterize the noise induced by complex environments. In particular, we show that a joint measurement on entangled probes can improve estimation of the correlation time for a…

量子物理 · 物理学 2017-11-07 Matteo A. C. Rossi , Matteo G. A. Paris

The application of quadrupole-devices with high field gradients and small apertures requires precise control over higher order multipole field components. We present a new scheme for performance control and tuning, which allows the…

仪器与探测器 · 物理学 2009-11-09 S. Becker , M. Bussmann , S. Raith , M. Fuchs , R. Weingartner , P. Kunz , W. Lauth , S. Schramm , M. El Ghazaly , F. Grüner , H. Backe , D. Habs

A method is described intended for distributed calibration of a probe microscope scanner consisting in a search for a net of local calibration coefficients (LCCs) in the process of automatic measurement of a standard surface, whereby each…

材料科学 · 物理学 2018-12-13 Rostislav V. Lapshin

An analysis of plasma density distributions at arbitrary ion-atom collisionality for one-dimensional axially symmetrical cylindrical and annular plasmas is presented. Perturbations of plasma densities caused by a cylindrical probe are…

等离子体物理 · 物理学 2023-11-08 Valery Godyak , Natalia Sternberg

Proton radiography is a useful diagnostic of high energy density (HED) plasmas under active theoretical and experimental development. In this paper we describe a new simulation tool that interacts realistic laser-driven point-like proton…

Periodically-driven open quantum systems that never thermalize exhibit a discrete time-crystal behavior, a non-equilibrium quantum phenomenon that has shown promise in quantum information processing applications. Measurements of…

介观与纳米尺度物理 · 物理学 2023-07-11 Subhajit Sarkar , Yonatan Dubi

Vacuum arc thruster performance in a magnetic nozzle configuration is experimentally characterized. Measurements are performed on a miniature coaxial thruster with an anode inner diameter of $1.8$ mm. The magnetic field B is produced by a…

等离子体物理 · 物理学 2020-06-25 Satyajit Chowdhury , Igal Kronhaus

We propose an effective method for removing thermal vibrations that complicate the task of analyzing complex dynamics in atomistic simulation of condensed matter. Our method iteratively subtracts thermal noises or perturbations in atomic…

材料科学 · 物理学 2023-05-04 Tim Hsu , Babak Sadigh , Nicolas Bertin , Cheol Woo Park , James Chapman , Vasily Bulatov , Fei Zhou

We propose and demonstrate a linear optical device which deterministically performs optimal quantum measurement or minimum disturbance measurement on a single-photon polarization qubit with the help of an ancillary path qubit introduced to…

量子物理 · 物理学 2009-11-13 So-Young Baek , Yong Wook Cheong , Yoon-Ho Kim

We demonstrate that flow of longitudinal unpolarized current through a ballistic two-dimensional electron gas with Rashba spin-orbit coupling will induce nonequilibrium spin accumulation which has opposite sign for the two lateral edges and…

介观与纳米尺度物理 · 物理学 2007-05-23 Branislav K. Nikolic , Satofumi Souma , Liviu P. Zarbo , Jairo Sinova

Analyzing porous (nano)materials by the atom probe tomography has been notoriously difficult. The electrostatic pressure intensifies stress at voids which results in premature failure of the specimen, and the electrostatic field…

材料科学 · 物理学 2022-07-27 Se-Ho Kim , Ayman A. El-Zoka , Baptiste Gault

We describe first results obtained with a track structure imaging system for measuring the ionisation topology of charged particles in a low-pressure gas. The detection method is based on a time projection chamber (TPC) filled with…

仪器与探测器 · 物理学 2007-05-23 U. Titt , V. Dangendorf , H. Schuhmacher

We demonstrate a new method for locally probing the edge states in the quantum Hall regime utilizing a side coupled quantum dot positioned at an edge of a Hall bar. By measuring the tunneling of electrons from the edge states into the dot,…

介观与纳米尺度物理 · 物理学 2011-06-14 Tomohiro Otsuka , Eisuke Abe , Yasuhiro Iye , Shingo Katsumoto

A novel light detection scheme has been tested for use in medium-pressure gas TPCs, in view of rare events searches in low energy particle physics. It has the advantage of minimal interference with the ionization collection system, used for…

仪器与探测器 · 物理学 2015-06-17 G. Giroux , M. Auger , D. Franco , M. Weber , S. Delaquis , R. Gornea , P. Lutz , J. -L. Vuilleumier , J. -M. Vuilleumier

An experimental study on magnetic near-field (NF) scanning of printed circuit board (PCB) emission radiation is developed in this paper. The design and installation of the electromagnetic (EM) NF scanner is introduced. The test bed of…

网络与互联网体系结构 · 计算机科学 2025-09-30 Hongchuan Jia , Fayu Wan , Vladimir Mordachev , Jérôme Rossignol , Glauco Fontagalland , Nour Murad , Blaise Ravelo

A flexible and low-cost device for eddy current non-destructive testing made of off-the-shelf components is described. The proposed system is compact and easy to operate, and it consists of a dual H-bridge stepper motor driver, a coil…

信号处理 · 电气工程与系统科学 2021-02-24 Hamed Malekmohammadi , Andrea Migali , Stefano Laureti , Marco Ricci

The recent observation of non-classical electron transport regimes in two-dimensional materials has called for new high-resolution non-invasive techniques to locally probe electronic properties. We introduce a novel hybrid scanning probe…

介观与纳米尺度物理 · 物理学 2023-04-11 A. De Cecco , V. S. Prudkovskiy , D. Wander , R. Ganguly C. Berger , W. A. de Heer , H. Courtois , C. B. Winkelmann

Combustion instabilities are particularly problematic for rocket thrust chambers because of their high energy release rates and their operation close to the structural limits. In the last decades, progress has been made in predicting high…