Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Mass Analyzers: Common Types01:19

Mass Analyzers: Common Types

548
The quadrupole mass analyzer consists of four cylindrical metal rods arranged in a diamond carrying a DC voltage and a radio-frequency AC voltage. The motion of ions through the quadrupole depends on the field strength, causing only ions of a certain m/z to resonate successfully and strike the detector at a given field strength. Though the transmission rate for these analyzers is high, the exact elemental composition of the sample is not determined because of low resolution; however, they are...
548
Mass Analyzers: Overview01:13

Mass Analyzers: Overview

567
The mass analyzer is a crucial component of the mass spectrometer. In the ionization chamber, the vaporized sample is bombarded with a high-energy electron beam to generate a radical cation and further fragment into neutral molecules, radicals, and cations. A series of negatively charged accelerator plates accelerate the cations into the mass analyzer. The mass analyzer separates ions according to their mass-to-charge (m/z) ratios and then directs them to the detector. The common types of mass...
567
Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

141
AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
141
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

180
Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy  (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
180
Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

320
The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
320
Scanning Electron Microscopy01:07

Scanning Electron Microscopy

4.1K
A scanning electron microscope (SEM) is used to study the surface features of a sample by using an electron beam that scans the sample surface in a two-dimensional manner. Typically, areas between ~1 centimeter to 5 micrometers in width can be imaged. SEM can be used to image bacteria, viruses, tissues as well as larger samples like insects. Conventional SEM gives a magnification ranging from 20X to 30,000X and spatial resolution of 50 to 100 nanometers.
Fundamental Principles
Accelerated...
4.1K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Dynamic uncertainty-level assessment framework for real-time needle tracking in CT-guided surgical environments.

International journal of computer assisted radiology and surgery·2026
Same author

Real-time marker-less needle tracking for CT-guided interventions using multiple RGB cameras.

International journal of computer assisted radiology and surgery·2026
Same author

The Influence of Environmental Fidelity on Virtual Presence, Intrinsic Motivation, Cognitive Load and Learning Outcomes in Medical VR.

IEEE transactions on visualization and computer graphics·2026
Same author

Pediatric sinogenic and otogenic intracranial infections requiring neurosurgical intervention: a North American multicenter study in the era of COVID-19.

Journal of neurosurgery. Pediatrics·2026
Same author

Novel cell-based assay enables FRET-based measurements of the dimerization activity of the chaperone DNAJB6.

Biology methods & protocols·2026
Same author

The Biogeochemical Fate of Se(VI) in Bentonite Systems Relevant to the Disposal of High-Level Radioactive Waste.

Environmental science & technology·2026
Same journal

Transport of Electrons in Tangled Magnetic Fields.

Space science reviews·2026
Same journal

The Solar Wind Electron (SWE) Instrument for the Interstellar Mapping and Acceleration Probe Mission.

Space science reviews·2026
Same journal

Inter-comparison of Mars Upper Atmosphere Neutral Density and Temperature Datasets from MAVEN.

Space science reviews·2026
Same journal

The Interstellar Mapping And Acceleration Probe High Energy (IMAP-Hi) Neutral Atom Imager.

Space science reviews·2026
Same journal

Origin and Evolution of the Galilean Satellites Within the Jovian System.

Space science reviews·2026
Same journal

The IMAP Magnetometer.

Space science reviews·2026
查看所有相关文章

相关实验视频

Updated: May 27, 2025

Coulomb Explosion Imaging as a Tool to Distinguish Between Stereoisomers
08:51

Coulomb Explosion Imaging as a Tool to Distinguish Between Stereoisomers

Published on: August 18, 2017

9.0K

该TRACERS分析器用于卡斯普电子.

Jasper S Halekas1, Christian Hansen1, Suranga Ruhunusiri1,2

  • 1Department of Physics and Astronomy, University of Iowa, 203 Van Allen Hall, Iowa City, 52242 IA USA.

Space science reviews
|February 17, 2025
PubMed
概括
此摘要是机器生成的。

在TRACERS卫星上的Cusp电子分析仪 (ACE) 仪器测量了地球磁层尖端的电子行为. 这些发现有助于科学家了解磁再连接和空间等离子体动力学.

关键词:
电子 电子 是一个电子.静电分析仪 静电分析仪磁层是一个磁层.美国特拉塞尔 (Tracer) 任务

更多相关视频

Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis
07:24

Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis

Published on: May 10, 2021

5.6K
Atom Probe Tomography Studies on the CuIn,GaSe2 Grain Boundaries
09:51

Atom Probe Tomography Studies on the CuIn,GaSe2 Grain Boundaries

Published on: April 22, 2013

12.7K

相关实验视频

Last Updated: May 27, 2025

Coulomb Explosion Imaging as a Tool to Distinguish Between Stereoisomers
08:51

Coulomb Explosion Imaging as a Tool to Distinguish Between Stereoisomers

Published on: August 18, 2017

9.0K
Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis
07:24

Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis

Published on: May 10, 2021

5.6K
Atom Probe Tomography Studies on the CuIn,GaSe2 Grain Boundaries
09:51

Atom Probe Tomography Studies on the CuIn,GaSe2 Grain Boundaries

Published on: April 22, 2013

12.7K

科学领域:

  • 空间物理 空间物理
  • 等离子体物理学的物理学
  • 航空航天工程 航空航天工程

背景情况:

  • 磁层尖端是太阳风向地球磁层转移能量和粒子的关键区域.
  • 了解尖端的动态过程对于太空天气预测和理解磁层动态至关重要.
  • 协同重新连接和尖端电子动力学侦察卫星 (TRACERS) 任务旨在调查磁力重新连接和尖端动力学.

研究的目的:

  • 使用ACE仪器,用ACE仪器来描述磁层尖端内的电子速度分布函数.
  • 用沉和上升电子探测磁场线拓和静电电位结构.
  • 通过分析磁再连接和尖端结构的空间和时间变化,为TRACERS任务目标做出贡献.

主要方法:

  • 在两个距离很近的TRACERS航天器上使用Cusp电子分析仪 (ACE) 仪器.
  • 在旋转平台上使用经典的半球静电分析仪,以实现全角覆盖 (10°x7°分辨率).
  • 在20-13,500 eV的能量范围内测量电子,具有19%的分数能量分辨率和50 ms的频率.

主要成果:

  • ACE仪器提供了磁层顶端电子速度分布函数的详细测量.
  • 数据揭示了有关磁场线拓和静电电位结构的敏感信息.
  • 能够实现顶点边界和动态过程的亚千米空间分辨率.

结论:

  • ACE测量对于了解磁层顶端的粒子加速和运输至关重要.
  • 这些发现支持TRACERS任务研究磁再连接及其影响的目标.
  • 高频率电子速度分布数据增强了我们在尖端区域分辨细度结构的能力.