Features:

10mCi Ca^119mSnO₃ single-line radiation source and Na(I) scintillation counter is used. The radioactive source, sample cell and detector are assembled vertically, can be flexibly disassembled, switched at will.

A special continuous flow type cryostat is used, solid powder and frozen solution samples can be measured between 77K and RT, ultra-low vibration, linewidth of standard α-Fe is 0.28mm/s. Temperature accuracy is 0.1K, vacuum degree up to 10^-5-10^-6mbar.

Applications:

This instrument can continuously measure Mössbauer Transmission Spectrum (MTS) at any temperature point between 77K and RT. It can also be used to measure air sensitive samples that require vacuum or atmosphere protection. Frozen liquid sample can be also measured. The MTS, Conversion Electron Mössbauer Spectroscopy (CEMS), in-situ/operando measurement unit can be flexibly installed and disassembled. Horizontal set up of the instrument is beneficial to assemble in-situ/operando devices with liquid sample, especially for in-situ/operando electrochemical and battery mechanism characterization.

The Mössbauer spectroscopy is a technology that studies the behavior of resonant absorption of gamma rays by a specific atomic nuclei. Energy resolution is extremely high. Hyperfine interaction, phase information, valence state, coordination structure and magnetism property of Mössbauer nuclei can be obtained. Generally, the variable temperature MTS measurements can be used to characterize the crystal lattice dynamics, magnetism, spin crossover, electron hopping, valence tautomerism, relaxation etc.

The maximum diameter of the solid powder sample cell is 12mm (for LT) or 15mm (for RT), and the recommended optimal absorption thickness of Sn is 10mg/cm². The volume of freezing solution sample cell is 200mm³.