Optimization of the absorber thickness for improving the quality of a Mössbauer spectrum

Pulsed Electron-Electron Double Resonance (PELDOR) and Electron Spin Echo Envelope Modulation (ESEEM) Spectroscopy in Bioanalysis

“…Closed cycle or cryogen-free cryo-cooler systems are increasingly popular since their operation is cheaper as no liquid helium is needed and a considerable progress in isolating the sample chamber from the cooler unit vibrations has been achieved. Long et al (1983) have demonstrated that the ideal sample absorber thickness, t ideal , that allows us to obtain the desired results in the shortest time and with the best signal to noise ratio, lies between the reverse of the mass absorption coefficient of the sample and twice this value. The value of t ideal for samples with high electronic absorption when compared with the resonant Mössbauer absorption should be close to the former value.…”

Experimental Techniques

“…Some use the height [6] or the area [7] of the spectral lines; others use the signal-to-noise ratio ðS=NÞ [8][9][10][11][12]. Some use the height [6] or the area [7] of the spectral lines; others use the signal-to-noise ratio ðS=NÞ [8][9][10][11][12].…”

Moessbauer spectroscopy

“…A useful contribution on the optimization of the absorption thickness for Mossbauer experiments is given by Sarma et al (256), who determined the signal-to-noise ratio as a function of tbe effective thickness for various values of the effective absorption coefficient.…”