Mössbauer study of iron diffusion in beryllium

✍ Scribed by B. Sepiol̶; K. Ruebenbauer; B. Miczko; T. Birchall

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 327 KB
• Volume: 168
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/0921-4526(91)90665-2

✦ Synopsis

The broadening of the 14.41 keV Mossbauer line of "Fe due to diffusion of iron atoms in polycrystalline beryllium has been investigated

in the temperature range 1123 to 1423K. The observed broadenings obey the Arrhenius law with activation energy 1.66( 10) eV, i.e.. lower than that obtained from the corresponding polycrystalline tracer data. The variations of the resonant fraction, second order Doppler shift and quadrupole splitting versus temperature are reported. An average diffusion coefficient has been calculated from the obtained broadenings and compared with the tracer results.