A muoniated radical in selenium

Reid, I. D., Cox, S. F. J., Jayasooriya, U. A. and Zimmermann, U. (2003) A muoniated radical in selenium. Physica B: Condensed Matter, 326 (1-4). pp. 89-93. ISSN 1873-2135

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We report new 0.3 T transverse-field muSR experiments in crystalline Se which show only a small, slowly relaxing muon signal at 300 K, accounting for about 30% of the incoming muon polarization. However, at 90 K signals are observed around 74 and 157 MHz, characteristic of a radical with a hyperfine coupling of 231 MHz. Very fast relaxation which increases with temperature makes these signals impossible to follow beyond 200 K. Above 400 K a quickly relaxing diamagnetic signal becomes visible, its relaxation falling with increasing temperature. In the melt (> 490 K) just a single non-relaxing diamagnetic signal is seen. These observations may be explained by electron spin-exchange with a muoniated radical. (C) 2002 Elsevier Science B.V. All rights reserved.

Item Type: Article
Faculty \ School: Faculty of Science > School of Chemistry
UEA Research Groups: Faculty of Science > Research Groups > Physical and Analytical Chemistry (former - to 2017)
Depositing User: Rachel Smith
Date Deposited: 09 May 2011 12:36
Last Modified: 24 Oct 2022 03:02
URI: https://ueaeprints.uea.ac.uk/id/eprint/29790
DOI: 10.1016/S0921-4526(02)01584-3

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