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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$...
Autores principales: | , , , , , , |
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Lenguaje: | eng |
Publicado: |
1996
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1016/0168-583X(95)01196-X http://cds.cern.ch/record/314615 |
_version_ | 1780890295327522816 |
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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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