A

multi-channel data acquisition and processing system for Mössbauer spectroscopy is described

which consists of an intelligent interface and a BC3-80 microcomputer.

The system has eight data channels

each channel contains a counting circuit and a memory. A Z80-CPU is used as a main unit for control and access. The microcomputer is used for real-time displaying spectrum

saving the data to disk

printing data and data processing.

The system is applicable to a high counting rate multi-wire proportional chamber. It can increase greatly the counting rate for measuring Mössbauer spectrum. The signals of each wire in the chamber go through a corresponding amplifier and a differential discriminator and are recorded by a corresponding data channel

the data of each channel is added by the microcomputer. In addition

we can use two channels to measure an absorption and a scattering spectrum at the same time and obtain the internal and the surface information of the sample simultaneously.