X-ray Fluorescence Spectrometer Gas Blowing Mechanism
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Solution Overview
Problem
Existing X-ray fluorescence spectrometers using MYLAR® films suffer from reduced sensitivity due to X-ray absorption, poor workability, and potential contamination issues, which can lead to detector and X-ray bulb failures.
Innovation Solution
An X-ray fluorescence spectrometer design that employs a gas blowing mechanism to prevent samples from attaching to the X-ray incident window, eliminating the need for MYLAR® films, and uses helium gas to enhance sensitivity, particularly for light elements, by blowing gas both to the X-ray incident window and the sample stage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a MYLAR® film is used to prevent sample powder from attaching to the detector and X-ray bulb, then the detector and X-ray bulb are protected from contamination, but the sensitivity is lowered due to X-ray absorption by the film
Solution Approach 1:
The patent removes the MYLAR® film from the system entirely, extracting the protective barrier function and replacing it with a gas blowing mechanism. This eliminates the X-ray absorption problem while maintaining protection through alternative means (gas flow to prevent powder attachment).
Solution Approach 2:
The patent introduces a gas flow as an intermediary substance between the sample powder and the detector/X-ray bulb. The gas acts as a protective mediator that prevents powder attachment without absorbing X-rays, replacing the MYLAR® film's protective function with a non-absorbing alternative.
2Reliability
If a MYLAR® film is used to prevent sample attachment, then the detector is protected, but the workability is poor due to the need to replace the film and risk of fine powder attachment during replacement
Solution Approach 1:
The patent eliminates the MYLAR® film replacement operation entirely, removing the source of workability problems. The gas blowing mechanism requires no physical replacement, eliminating the associated contamination risk and operational complexity.
Solution Approach 2:
The gas blowing mechanism provides continuous automatic protection without requiring manual intervention or film replacement. The system self-maintains protection through ongoing gas flow, eliminating the need for operator involvement in protective measures.
3Reliability
If a MYLAR® film is used as a protective barrier, then sample powder is prevented from attaching to the detector, but the characteristic X-rays are absorbed by the film
Solution Approach 1:
The patent removes the MYLAR® film that causes X-ray absorption, extracting the protective function and replacing it with a gas-based system that does not interfere with X-ray transmission. This restores sensitivity for light element detection while maintaining detector protection.
Solution Approach 2:
The patent changes the protective mechanism from a solid film (MYLAR®) to a gas flow. This parameter change in the protective medium's physical state eliminates the X-ray absorption problem, as gases are transparent to characteristic X-rays unlike the absorptive film material.
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 design improves sensitivity and throughput by preventing X-ray absorption and contamination, ensuring stable measurements for hazardous substance analysis without the drawbacks of MYLAR® films, allowing for high-sensitivity analysis of light elements and reducing the risk of detector and X-ray bulb contamination.
Implementation Method 1
a gas blowing mechanism configured to blow a gas to an outer surface of the X-ray incident window
Implementation Method 2
a sample is irradiated with X-rays emitted from an X-ray source
Implementation Method 3
fluorescence X-rays which are characteristic X-rays released from the sample are detected
Implementation Method 4
a detector, which is configured to detect fluorescent X-rays produced from the sample irradiated with the primary X-rays
Implementation Method 5
an X-ray incident window formed by a window material through which fluorescent X-rays is transmittable
Data Source
AI summary
An X-ray fluorescence spectrometer includes: a sample stage configured to place a sample thereon; an X-ray source configured to irradiate the sample with primary X-rays; a detector, which is configured to detect fluorescent X-rays produced from the sample irradiated with the primary X-rays, and which includes an X-ray incident window formed by a window material through which fluorescent X-rays is transmittable; and a gas blowing mechanism configured to blow a gas to at least one of an outer surface of the X-ray incident window and the sample stage.