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Gas Input for Atomic Spectrometer
It is the amount of absorption that determines the concentration of a particular component. Typical gases used in AAS are Nitrogen and Argon. Every ground state metal absorbs light radiation (and. Specifications of gases needed are shown in the following table: There are two kinds of gas are required by GF-AAS, the inert gas and auxiliary gas. The pressure have to be controlled in the range of 70-200kPa. Guystav Kirchoff and Robert Bunsen first used atomic absorption—along with atomic emission—in 1859 and 1860 as a means for identify atoms in flames and hot gases. The HCL gives off light characteristic to the elemental wavelength being measured. ASD Intro & Contents - Introduction to and.
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Key Technologies of Wavelength Division Multiplexing Systems
Normal WDM (sometimes called BWDM) uses the two normal wavelengths 1310 and 1550 nm on one fiber. Dense WDM (DWDM) uses the C-Band (1530 nm-1565 nm) transmission window but with denser. In fiber-optic communications, wavelength-division multiplexing (WDM) is a technology which multiplexes a number of optical carrier signals onto a single optical fiber by using different wavelengths (i. This allows multiple channels of data to be transmitted simultaneously. Wavelength division multiplexers are fundamental to the functioning and performance of integrated photonic circuits, with applications ranging from optical interconnects to sensing and quantum technologies.