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$\alpha$-emission channeling investigations of the lattice location of Li in Ge

The $\alpha$-emission channeling and blocking technique is a direct method for lattice site determination of radioactive atoms in single crystals. Position-sensitive detection of emitted $\alpha$ -particles provides an efficient means of carrying out such experiments at very low doses (10$^{10}$-10$...

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Autores principales: Wahl, U, Jahn, S G, Restle, M, Ronning, C R, Quintel, H, Bharuth-Ram, K, Hofsäss, H C
Lenguaje:eng
Publicado: 1996
Materias:
Acceso en línea:https://dx.doi.org/10.1016/0168-583X(95)01196-X
http://cds.cern.ch/record/314615
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author Wahl, U
Jahn, S G
Restle, M
Ronning, C R
Quintel, H
Bharuth-Ram, K
Hofsäss, H C
author_facet Wahl, U
Jahn, S G
Restle, M
Ronning, C R
Quintel, H
Bharuth-Ram, K
Hofsäss, H C
author_sort Wahl, U
collection CERN
description The $\alpha$-emission channeling and blocking technique is a direct method for lattice site determination of radioactive atoms in single crystals. Position-sensitive detection of emitted $\alpha$ -particles provides an efficient means of carrying out such experiments at very low doses (10$^{10}$-10$^{11}$ implanted probe atoms per spectrum). Comparison of the experimental data to Monte Carlo simulations of complete two-dimensional channeling patterns (e.g. ±2°C around <100>, <110> and <211> axes, which also includes all relevant planar directions) allows for straight-forward identification and rather accurate quantitative determination of occupied lattice sites, while at the same time the energy spectrum of emitted a particles gives information on the probe atom depth distribution. We illustrate this for the case of ion implanted $^8$Li (t_=0.8 s) in Ge, where we identify mainly tetrahedral Li at room temperature, and bond-centered Li at slightly elevated temperature.
id cern-314615
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1996
record_format invenio
spelling cern-3146152019-09-30T06:29:59Zdoi:10.1016/0168-583X(95)01196-Xhttp://cds.cern.ch/record/314615engWahl, UJahn, S GRestle, MRonning, C RQuintel, HBharuth-Ram, KHofsäss, H C$\alpha$-emission channeling investigations of the lattice location of Li in GeCondensed MatterThe $\alpha$-emission channeling and blocking technique is a direct method for lattice site determination of radioactive atoms in single crystals. Position-sensitive detection of emitted $\alpha$ -particles provides an efficient means of carrying out such experiments at very low doses (10$^{10}$-10$^{11}$ implanted probe atoms per spectrum). Comparison of the experimental data to Monte Carlo simulations of complete two-dimensional channeling patterns (e.g. ±2°C around <100>, <110> and <211> axes, which also includes all relevant planar directions) allows for straight-forward identification and rather accurate quantitative determination of occupied lattice sites, while at the same time the energy spectrum of emitted a particles gives information on the probe atom depth distribution. We illustrate this for the case of ion implanted $^8$Li (t_=0.8 s) in Ge, where we identify mainly tetrahedral Li at room temperature, and bond-centered Li at slightly elevated temperature.CERN-PPE-96-142oai:cds.cern.ch:3146151996-10-18
spellingShingle Condensed Matter
Wahl, U
Jahn, S G
Restle, M
Ronning, C R
Quintel, H
Bharuth-Ram, K
Hofsäss, H C
$\alpha$-emission channeling investigations of the lattice location of Li in Ge
title $\alpha$-emission channeling investigations of the lattice location of Li in Ge
title_full $\alpha$-emission channeling investigations of the lattice location of Li in Ge
title_fullStr $\alpha$-emission channeling investigations of the lattice location of Li in Ge
title_full_unstemmed $\alpha$-emission channeling investigations of the lattice location of Li in Ge
title_short $\alpha$-emission channeling investigations of the lattice location of Li in Ge
title_sort $\alpha$-emission channeling investigations of the lattice location of li in ge
topic Condensed Matter
url https://dx.doi.org/10.1016/0168-583X(95)01196-X
http://cds.cern.ch/record/314615
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