Kinetics of color center formation in silica irradiated with swift heavy ions: Thresholding and formation efficiency

Manzano-Santamaría, J. and Olivares, J. and Rivera de Mena, Antonio and Peña Rodríguez, Ovidio Y. and Agullo Lopez, Fernando (2012). Kinetics of color center formation in silica irradiated with swift heavy ions: Thresholding and formation efficiency. "Applied Physics Letters", v. 101 (n. 15); p. 154103. ISSN 1077-3118. https://doi.org/10.1063/1.4757886.

Description

Title: Kinetics of color center formation in silica irradiated with swift heavy ions: Thresholding and formation efficiency
Author/s:
  • Manzano-Santamaría, J.
  • Olivares, J.
  • Rivera de Mena, Antonio
  • Peña Rodríguez, Ovidio Y.
  • Agullo Lopez, Fernando
Item Type: Article
Título de Revista/Publicación: Applied Physics Letters
Date: 8 October 2012
ISSN: 1077-3118
Volume: 101
Subjects:
Faculty: Instituto de Fusión Nuclear (UPM)
Department: Otro
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

We have determined the cross-section σ for color center generation under single Br ion impacts on amorphous SiO2. The evolution of the cross-sections, σ(E) and σ(Se), show an initial flat stage that we associate to atomic collision mechanisms. Above a certain threshold value (Se > 2 keV/nm), roughly coinciding with that reported for the onset of macroscopic disorder (compaction), σ shows a marked increase due to electronic processes. In this regime, a energetic cost of around 7.5 keV is necessary to create a non bridging oxygen hole center-E′ (NBOHC/E′) pair, whatever the input energy. The data appear consistent with a non-radiative decay of self-trapped excitons.

More information

Item ID: 15617
DC Identifier: http://oa.upm.es/15617/
OAI Identifier: oai:oa.upm.es:15617
DOI: 10.1063/1.4757886
Official URL: http://scitation.aip.org/content/aip/journal/apl/101/15/10.1063/1.4757886
Deposited by: Memoria Investigacion
Deposited on: 21 Oct 2013 14:16
Last Modified: 30 May 2017 16:04
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