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In this article, we present a simple, inexpensive, and effective method for measuring the capacitor charge and discharge processes using a light-emitting diode (LED) and the light meter of a smartphone. We propose a simple circuit in which…

物理教育 · 物理学 2023-10-10 Rubén Hurtado-Gutiérrez , Álvaro Tejero

Lithium-ion batteries (LIBs) are the leading technology used in consumer electronics, electric vehicles, and grid-level electrochemical energy storage applications. The ever-increasing use of LIBs has highlighted a gap in understanding of…

We present a novel technique to minimize UV-induced damage in experiments that employ second-harmonic generation cavities. The principle of our approach is to reduce the duty cycle of the UV light as much as possible to prolong the lifetime…

原子物理 · 物理学 2024-09-04 Li-Ren Liu , Brian K. Kendrick , Boerge Hemmerling

We report on spectroscopy and time-of-flight measurements using an 18 keV fast-pulsed photoelectron source of adjustable intensity, ranging from single photoelectrons per pulse to 5 photoelectrons per microsecond at pulse repetition rates…

仪器与探测器 · 物理学 2009-06-19 K. Valerius , M. Beck , H. Arlinghaus , J. Bonn , V. M. Hannen , H. Hein , B. Ostrick , S. Streubel , Ch. Weinheimer , M. Zboril

Lithium-ion batteries are widely used in various applications, including portable electronic devices, electric vehicles, and renewable energy storage systems. Accurately estimating the remaining useful life of these batteries is crucial for…

机器学习 · 计算机科学 2023-05-18 Ganesh Kumar

This chapter starts with a discussion of the main qualitative differences between UV and mid-IR filaments: from multiphoton ionization in the UV to tunnel ionization in the near- to mid-IR. A general qualitative analysis of the properties…

光学 · 物理学 2025-01-17 Ali Rastegari , Alejandro Aceves , Jean-Claude Diels

We propose an alternative way to determine GaAs carrier lifetime using pump-probe measurement based on fibre optics and integrated waveguides. We find that our GaAs samples have the lifetime ranging from 30-80 ps, supporting the bandwidth…

We describe an experimental setup developed aiming to irradiate samples under UV radiation for accelerated test for solar effects according to the relevant ECSS-ESA standards. This facility has been already used for projects belonging to…

Recent advances in LED technology have allowed the development of high-brightness deep-UV LEDs with potential applications in water purification, gas sensing and as excitation sources in fluorescence microscopy. The emission pattern of an…

仪器与探测器 · 物理学 2020-06-24 Mollie McFarlane , Gail McConnell

Charge Coupled Devices (CCDs) have been successfully used in several high energy physics experiments over the past two decades. Their high spatial resolution and thin sensitive layers make them an excellent tool for studying short-lived…

Large liquid argon time projection chambers (LArTPCs) require stable and well-characterized delivery of ultraviolet (UV) light for in situ calibration of photosensors at cryogenic temperatures. This article reports bench-top and cryogenic…

MeV ultrafast electron diffraction (UED) is a widely used technology for ultrafast structural dynamic studies of matters in numerous areas. The development of laser wakefield accelerator (LWFA) envisions great potential of advanced…

加速器物理 · 物理学 2024-04-22 Yu Fang , Fei Li , Jianfei Hua , Bo Guo , Linyi Zhou , Bing Zhou , Zhihao Chen , Jianyi Liu , Zheng Zhou , Yipeng Wu , Yingchao Du , Renkai Li , Wei Lu

Time-resolved techniques have been widely used in time-gated and luminescence lifetime imaging. However, traditional time-resolved systems require expensive lab equipment such as high-speed excitation sources and detectors or complicated…

仪器与探测器 · 物理学 2023-10-09 Yan Wang , Sina Sadeghi , Rajesh Paul , Zach Hetzler , Evgeny Danilov , Frances S. Ligler , Qingshan Wei

The Mini-EUSO instrument is a UV telescope to be placed inside the International Space Station (ISS), looking down on the Earth from a nadir-facing window in the Russian Zvezda module. Mini-EUSO will map the earth in the UV range (300 - 400…

天体物理仪器与方法 · 物理学 2018-09-18 Francesca Capel , Alexander Belov , Marco Casolino , Pavel Klimov

The CMS Resistive Plate Chamber (RPC) system has been certified for 10 years of LHC operation. In the next years, during the High luminosity LHC (HL-LHC) phase, the LHC instantaneous luminosity will increase to a factor five more than the…

仪器与探测器 · 物理学 2022-08-31 R. Aly

We discuss a possibility to measure the lifetime of charged Wino in supersymmetric model at future 100 TeV pp colliders, assuming that (neutral) Wino is the lightest superparticle (LSP). In the Wino LSP scenario, the charged Wino has a…

高能物理 - 唯象学 · 物理学 2020-02-05 So Chigusa , Yusuke Hosomi , Takeo Moroi , Masahiko Saito

A light emitting diode (LED) pulser has been developed that can be used for tests or calibration of timing and amplitude sensitivity of particle physics detectors. A comparative study is performed on the components and pulser output…

仪器与探测器 · 物理学 2018-03-14 A. Grummer , M. R. Hoeferkamp , S. Seidel

Quantum-dot light-emitting diodes (QD-LEDs) promise a new generation of efficient, low-cost, large-area, and flexible electroluminescent devices. However, the inferior performance of green and blue QD-LEDs is hindering the commercialization…

We describe a flasher system designed for use in monitoring the gains of the photomultiplier tubes used in the VERITAS gamma-ray telescopes. This system uses blue light-emitting diodes (LEDs) so it can be operated at much higher rates than…

天体物理仪器与方法 · 物理学 2014-11-20 D. Hanna , A. McCann , M. McCutcheon , L. Nikkinen

We investigate the triggering and guiding of DC high-voltage discharges over a distance of 37 cm by filaments produced by ultraviolet (266 nm) laser pulses of 200 ps duration. The latter reduce the breakdown electric field by half and allow…