Identification of cross-relaxation resonances of12B implanted in sc aluminum

Autor:	R. Pirlot, G. S'heeren, Romain Coussement, J. Lehmann, Mathias Cyamukungu, L. Grenacs, M. van den Bergh, Punit Boolchand
Rok vydání:	1993
Předmět:	Nuclear and High Energy Physics Materials science Relaxation (NMR) Resonance chemistry.chemical_element Isotopes of boron Electron Condensed Matter Physics Atomic and Molecular Physics and Optics Magnetic field Crystal Recoil chemistry Physical and Theoretical Chemistry Atomic physics Boron
Zdroj:	Hyperfine Interactions. 78:201-207
ISSN:	1572-9540 0304-3843
DOI:	10.1007/bf00568140
Popis:	Polarized B-12 nuclei were produced and recoil implanted in single crystals of fcc aluminum. The boron decay asymmetry and relaxation times were measured as a function of external magnetic field values and at different orientation angles of the crystal. To identify the resonances at certain field values in the B-12 depolarization in Al, a consistent theory based on the principle of a multi-spin system and nuclear level-crossing has been developed. A unique identification of the resonances, based on the resonant interaction between boron and particular pairs of aluminum neighbours, is perfectly possible. The strong dissipative coupling of the Al nuclei with the electron bath of the lattice hinders a straightforward interpretation of the resonance width and depth.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::84f4b84b865bcb2250a74b7436adc4bc https://doi.org/10.1007/bf00568140 Zobrazit plný text záznamu Full text from SpringerLink