Ion Analyzer Dual Mode Radical and Source Gas Introduction
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Solution Overview
Problem
Existing ion analyzers face challenges in distinguishing between ions generated by reactions with radicals and those generated by reactions with non-radical particles from the source gas in mass spectrometry, leading to difficulties in interpreting mass spectra.
Innovation Solution
The ion analyzer incorporates a dual operation mode: a radical introduction mode where radicals are generated and introduced into the reaction chamber, and a source-gas-only introduction mode where only the source gas is introduced without radical generation. This allows for the acquisition of mass spectrometry data under conditions where ions can react with non-radical source gas particles without radical-induced dissociation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If radicals are generated and introduced into the reaction chamber for radical-induced dissociation, then the ability to dissociate ions and obtain structural information is improved, but the difficulty of distinguishing between ions from radical reactions and non-radical reactions increases
Solution Approach 1:
The patent segments the ion detection process into two distinct operational modes: a radical introduction mode for obtaining structural information through radical-induced dissociation, and a source gas introduction mode for identifying ion sources without radical interference. This segmentation allows each mode to be optimized independently and enables clear comparison between the two types of reactions.
Solution Approach 2:
The patent employs periodic switching between two operational modes: periodically introducing radicals to obtain structural information, and periodically introducing only source gas to identify ion sources. This periodic alternation allows the system to collect both types of data sequentially, resolving the contradiction between obtaining structural information and identifying ion sources.
2Quantity of substance
If source gas is introduced into the reaction chamber, then the availability of reactive particles for ion reactions is improved, but the ability to distinguish reaction products from radicals becomes worse
Solution Approach 1:
The patent performs preliminary identification of ion sources by first conducting analysis in source gas introduction mode (without radicals) to establish a baseline spectrum of ions formed by non-radical reactions. This preliminary data is then used to interpret subsequent radical introduction mode spectra, allowing clear distinction between radical and non-radical reaction products.
Solution Approach 2:
The source gas serves as an intermediary that can be introduced in a controlled manner to produce ions through non-radical reactions. By comparing the ion spectrum with and without radical introduction, the source gas acts as a mediator to identify which ions originate from radical reactions versus non-radical reactions.
3Measurement precision
If dual operation modes are implemented to distinguish ion sources, then the measurement accuracy is improved, but the analysis time and operational complexity increase
Solution Approach 1:
The patent implements periodic switching between radical introduction mode and source gas introduction mode, allowing the system to efficiently collect both types of spectral data in a structured sequence. This periodic operation minimizes redundant measurements and optimizes the time required to obtain both structural information and ion source identification.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables accurate distinction between ions resulting from radical-induced dissociation and those resulting from reactions with non-radical source gas components, facilitating precise structural analysis of compounds in samples.
Implementation Method 1
a power supplier configured to supply electric power for generating an electric discharge within the generation chamber
Implementation Method 2
a reaction chamber which communicates with the generation chamber and into which the radical is introduced and an ion originating from a sample is dissociated by bringing the radical into contact with the ion within the reaction chamber
Data Source
AI summary
In an ion analyzer dissociating an ion originating from a sample by bringing a radical into contact with the ion within a reaction chamber, a source gas from which the radical is to be generated is introduced into a generation chamber. A power supplier supplies electric power for generating an electric discharge within the generation chamber. A source-gas supplier supplies the source gas to the generation chamber. A controller controls the source-gas supplier and the power supplier to perform, in a switchable manner, a radical introduction mode where the electric power is supplied to the generation chamber while the source gas is supplied to the generation chamber for supplying the radical to the reaction chamber, and a source-gas-only introduction mode where the electric power is not supplied to the generation chamber while the source gas is supplied to the generation chamber for supplying the source gas to the reaction chamber.