Introduction
Based on the 8751 MCU's Musburg spectrum waveform generator generates high linear triangular voltage reference signal with 8-bit D / A The converter precisely controls the amplitude, synchronization signal, and step signals of the triangular wave voltage reference signal, can be arbitrarily delayed to obtain high quality folding spectrum. The waveform ambulator can be controlled by the serial port of the DIP switch or IBM-PC or other microcomputer.
Features
Musburn spectrometer method is:
1 has extremely high resolution, take 57FE γ resonance absorption as an example, γ energy (E0) is 14.4 thousand electron-volt, the natural width (γ) of the line is 4.6 × 10 -9 Electronics, γ / E0 ~ 3.2 × 10 -13 , One resolution of 10 13 .
2 Musburg effect is very sensitive to the changes in the nuclear chemical environment, suitable for studying the fine structure of solid matter and superfine structures.
3 is a resonant absorption of a particular core (such as 57 119 119 sn), the Musburg effect is not subject to other nuclear and elements. interference.
4 Musburg effect The effect of the nuclear environment is generally less than 2.0 nm (limited to adjacent two, three layers of ions), especially suitable for fine crystal and amorphous substances.
Therefore, the Musburger spectrum is widely used to study geological samples. Musburg, which has been discovered, but only the Mu Score of 57 57 57 SUB> Sn under general conditions. Therefore, the instrument is suitable for use in a sample containing a quantity of Fe, Sn, providing information, chemical bond, cationic, ordered - disorder distribution, coordination structure, magnetic and phase analysis, etc..