Optimum thickness of Mössbauer absorber

CHEN Yi-Long，

YI Fan，

ZHANG Fu-Liang

Nuclear Science and Techniques

Vol.11, No.2

pp.91-95

Published in print 01 May 2000

CLC：O481.4

19400

If recoilless fraction f_a is available, the optimum absorber thickness d_opt can be calculated by maximizing the signal to noise ratio or Q factor. In this work, an approach presented is to get experimental Q_exp as a function of the thickness, and then fitting Q_exp by its theoretical expression gives f_a value. At last the d_opt value is deduced from a maximum on the fitted curve. In such a way, thicknesses of six specimens with quadrupole or magnetic hyperfine splitting were optimized.

Mössbauer spectrumOptimum thicknessSignal to noise ratio

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