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Updated: May 11, 2025

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在环境空气中使用密集聚焦的超短红外激光束加速电子加速

Marianna Lytova1, François Fillion-Gourdeau1,2, Simon Vallières1

  • 1INRS-EMT, 1650 Boul. Lionel-Boulet, Varennes, Quebec J3X 1P7, Canada.

Physical review. E
|April 18, 2025
PubMed
概括

高强度,短周期激光束可以加速空气中的MeV电子. 粒子在细胞模拟揭示了相对论的重力驱动力驱动这种加速,其峰值为1.6 MeV,波长为2.5μm.

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Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
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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.
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Atomic Emission Spectroscopy: Lab

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...
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