Radical Transport Pipe Layout for Efficient Ion Dissociation
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Solution Overview
Problem
The efficiency of dissociating precursor ions using radicals is reduced due to radical adhesion to the inner wall surface of the radical transport pipe, leading to a decrease in the amount of radicals supplied to the reaction chamber in ion analyzers.
Innovation Solution
The ion analyzer employs a radical transport pipe with an inner wall surface made of a material having a smaller adhesion amount or adhesion force compared to alumina or quartz, such as borosilicate glass, and is designed to direct one end of the pipe to a region with a thick ion distribution within the reaction chamber, ensuring efficient radical supply and minimizing adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If radicals are generated and transported through a radical transport pipe made of alumina or quartz, then radicals can be supplied to the reaction chamber, but a portion of the radicals adhere to the inner wall surface of the radical transport pipe, reducing the amount of radicals supplied to the reaction chamber
Solution Approach 1:
The patent changes the material parameter of the radical transport pipe from alumina or quartz to Teflon (PTFE). This material substitution fundamentally alters the surface properties of the pipe, reducing the adhesion force between radicals and the inner wall surface. Teflon's non-polar surface and low surface energy minimize radical adhesion, allowing more radicals to reach the reaction chamber effectively.
Solution Approach 2:
The patent employs Teflon (PTFE) as a specialized material with unique properties that combine low adhesion characteristics with appropriate mechanical strength and chemical inertness. This material selection creates an optimal interface between the radical transport function and the minimization of radical loss through adhesion.
2Reliability
If the radical transport pipe is made of alumina or quartz, then the pipe can withstand the operational conditions, but the adhesion force of radicals to the inner wall surface is large, reducing dissociation efficiency
Solution Approach 1:
The patent changes the material parameter from alumina/quartz to Teflon (PTFE), which maintains sufficient mechanical strength and chemical stability for the operational conditions while dramatically reducing radical adhesion. This parameter change optimizes both reliability and productivity by selecting a material that satisfies both durability requirements and low adhesion characteristics.
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 configuration increases the efficiency of dissociating precursor ions by reducing radical adhesion and ensuring effective radical delivery to the reaction chamber, enhancing the overall performance of the ion analyzer.
Implementation Method 1
a portion of the radicals adhere to the inner wall surface of the radical transport pipe, and the amount of radicals supplied to the reaction chamber decreases by the amount of radicals adhering to the inner wall surface
Data Source
AI summary
Provided is an ion analysis device (10) that irradiates sample component-derived precursor ions with radicals so as to generate product ions and analyzes the product ions, said device comprising: a reaction chamber (142) into which the precursor ions are introduced; a radical generation unit (151) which generates radicals; and a radical transport pipe (152) which connects the radical generation unit (151) and the reaction chamber (142), wherein at least part of the inner wall surface of the radical transport pipe (152) is made of a material having a lesser amount of or lower strength of radical adherence to the inner wall surface of the radical transport pipe (152) in comparison with alumina or quartz. One end (1523) of the radical transport pipe (152) is disposed inside the reaction chamber (142) and preferably faces toward a prescribed region (1424) where ions are localized in the reaction chamber (142).