ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Lamb–Mössbauer factor of powders determined by Mössbauer spectroscopy with resonant detector

Petr Novák, Tereza Schlattauerová, Vít Procházka, Josef Kopp, and Vlastimil Vrba

Department of Experimental Physics, Faculty of Science, Palacký University Olomouc, Olomouc, Czech Republic

E-mail: v.prochazka@upol.cz

Received: 22 December 2022  Accepted: 23 April 2023

Abstract:

The Lamb–Mössbauer factor is a crucial material parameter for the proper quantitative analysis of Mössbauer experiments. We report on a method for determining the Lamb–Mössbauer factor of powdered samples. It utilizes a resonant Mössbauer spectrometer together with a customized sample preparation, which ensures a homogeneous thickness of the powdered absorbers. Compared with other methods of Lamb‒Mössbauer factor determination, the presented approach is direct and requires only a single Mössbauer measurement. To demonstrate this method, the Lamb–Mössbauer factor of iron(II) oxalate dihydrate samples with varying thickness was measured. The resulting value of the Lamb–Mössbauer factor was 0.38 ± 0.03. The presented approach can be used for a large variety of powdered materials.

Keywords: Mössbauer spectroscopy; Lamb–Mössbauer factor; Iron oxalate; Resonant detector

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-023-02844-x

Chemical Papers 77 (12) 7283–7288 (2023)