解释质谱中离散离子计数器非线性的通量模型

IF 3.1 2区化学 Q2 CHEMISTRY, ANALYTICAL

Journal of Analytical Atomic Spectrometry Pub Date : 2025-06-25 DOI:10.1039/D5JA00085H

Stefaan Pommé and Sergei F. Boulyga

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引用次数: 0

摘要

提出了一个具有非延长死区时间的离散离子计数器的期望吞吐率的数学模型。由于离子计数器中产生的电子脉冲的时间分辨率有限，造成了施加的死区时间和脉冲堆积的干扰。该模型可适用于使用离散离子计数器的质谱仪，从而提供了一种再现观测到的原子丰度比的计数率依赖性的方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

A throughput model explaining non-linearity in discrete ion counters used in mass spectrometry

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A throughput model explaining non-linearity in discrete ion counters used in mass spectrometry

A mathematical model is presented to calculate the expected throughput rate in a discrete ion counter with imposed non-extending dead time. The count loss mechanism consists of a combined effect of the imposed dead time, interfered with pulse pileup owing to the finite time resolution of the electronic pulses generated in the ion counter. This model may be applicable to mass spectrometers making use of discrete ion counters, thus providing a means to reproduce counting-rate dependency of observed atomic abundance ratios.

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