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The role of X-ray fluorescence spectrometer line

Release time: 2020-01-13 10:27:45 Click: 861

X 射线结晶学 ,在分析仪器方面的应用也非常好。 X -ray was originally used for medical imaging diagnosis and X -ray crystallography, and its application in analytical instruments was also very good. 。 This is due to the high penetration power of X -rays and the ability to pass through many materials that are opaque to visible light, such as ink paper and wood . Such invisible rays can cause many solid materials to produce visible fluorescence, which can make photographic film sensitive and air ionized.

X 射线,其光子能量是不同的,频率赿高,波长赿短,光子能量赿大。 X -rays of different frequencies and wavelengths have different photon energies, high frequency ray, short wavelength ray, and large photon energy ray.

X 射线是由大量以光速运动的、具有确定能量的粒子流,这些粒子称为光量子,或简称为光子。 From the perspective of particle nature, X -rays consist of a large number of particles with a certain energy that move at the speed of light. These particles are called photons, or simply photons.

γ 射线之间的电磁波。 X -rays are particle streams created by the transition of electrons in atoms between two energy levels with very different energy levels . They are electromagnetic waves with wavelengths between ultraviolet and gamma rays. 0.01~100 埃之间。 Its wavelength is very short, between 0.01 and 100 angstroms. WK 伦琴于 1895 年发现,故又称伦琴射线。 Discovered by German physicist WK Roentgen in 1895 , it is also called Roentgen ray.

X荧光光谱仪线的作用

The role of X-ray fluorescence spectrometer line

1. Penetrating effect. 射线因其波长短,能量大,照在物质上时,仅一部分被物质所吸收,大部分经由原子间隙而透过,表现出很强的穿透能力。 Due to its short wavelength and large energy, X -rays are only partially absorbed by the substance when they strike the substance, and most of them are transmitted through the gap between atoms, showing strong penetration ability. 射线穿透物质的能力与 X 射线光子的能量有关, X 射线的波长越短,光子的能量越大,穿透力越强。 The ability of X - rays to penetrate matter is related to the energy of X -ray photons. The shorter the wavelength of X -rays, the greater the energy of photons and the stronger the penetrating power. 射线的穿透力也与物质密度有关,利用差别吸收这种性质可以把密度不同的物质区分开来。 The penetrating power of X -rays is also related to the density of substances, and the use of differential absorption can distinguish materials with different densities.

2. Ionization. X 射线照射时,可使核外电子脱离原子轨道产生电离。 When the material is irradiated with X -rays, it can cause extra-nuclear electrons to deviate from the atomic orbit to generate ionization. X 射线的照射量,根据这个原理制成了 X 射线测量仪器。 The amount of ionized charge can be used to determine the amount of X -ray exposure. According to this principle, an X -ray measuring instrument is made. Under ionization, the gas can conduct electricity; certain substances can undergo chemical reactions; various biological effects can be induced in the organism.

3. Fluorescence effect. 射线波长很短不可见,但它照射到某些化合物如磷、铂氰化钡、硫化锌镉、钨酸钙等时,可使物质发生荧光(可见光或紫外线),荧光的强弱与 X 射线量成正比。 The X -ray wavelength is very short and invisible, but when it is irradiated to certain compounds such as phosphorus, platinum barium cyanide, zinc cadmium sulfide, calcium tungstate, etc., it can cause the substance to fluoresce (visible light or ultraviolet light). The amount of radiation is directly proportional. X 射线应用于透视的基础,利用这种荧光作用可制成荧光屏,用作透视时观察 X 射线通过人体组织的影像,也可制成增感屏,用作摄影时增强胶片的感光量。 This effect is the basis of X -ray application in fluoroscopy. This fluorescent effect can be used to make a fluorescent screen, which is used to observe the image of X -rays passing through human tissue during fluoroscopy . It can also be made into an intensifying screen, which is used to enhance the film during photography Sensitivity.

4. Heat effect. X 射线能大部分被转变成热能,使物体温度升高。 The X -ray energy absorbed by the substance is mostly converted into heat energy, which causes the temperature of the object to rise.

5. Interference, diffraction, reflection, refraction. X 射线显微镜、波长测定和物质结构分析中都得到应用。 These effects are used in X -ray microscopy, wavelength measurement, and material structure analysis.

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hot key words:

Direct Reading Spectrometer

High frequency infrared carbon and sulfur analyzer

Spark Direct Reading Spectrometer

Portable spectrometer

Photoelectric Direct Reading Spectrum Analyzer


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