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Updated: Jun 26, 2026

Hyperpolarized Xenon for NMR and MRI Applications
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Hyperpolarized Xenon for NMR and MRI Applications

Published on: September 6, 2012

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使用净计数方法对127个Xe追踪器测量的分析

M A Goodwin1, D L Chester1, G Galvin1

  • 1AWE Aldermaston, Reading, RG7 4PR, UK.

Journal of environmental radioactivity
|February 5, 2025
PubMed
概括

在内华达国家安全站点 (NNSS) 的地下化学爆炸后,Radon-227 (Xe) 被检测到3.5公里外. 这项研究分析了SAUNA QB系统的β-玛巧合数据,以测量其度.

关键词:
在CTBT中,国际监测系统国际监测系统核爆炸监测监测 核爆炸监测物理实验 1 物理实验 1放射性子是一种放射性物质.一个XE-127是什么XE-127是什么

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Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization08:22

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相关概念视频

Mass Analyzers: Overview01:13

Mass Analyzers: Overview

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...
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Mass Analyzers: Common Types

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...