by J. Manzano-Santamaría, J. Olivares, A. Rivera, O. Peña-Rodríguez and F. Agulló-López
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 textgreater 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.
Reference:
J. Manzano-Santamaría, J. Olivares, A. Rivera, O. Peña-Rodríguez and F. Agulló-López, “Kinetics of color center formation in silica irradiated with swift heavy ions: Thresholding and formation efficiency”, Applied Physics Letters, vol. 101, no. 15, pp. 154103.
Bibtex Entry:
@article{manzano-santamaria_kinetics_2012,
title = {Kinetics of color center formation in silica irradiated with swift heavy ions: {Thresholding} and formation efficiency},
volume = {101},
issn = {0003-6951},
shorttitle = {Kinetics of color center formation in silica irradiated with swift heavy ions},
url = {http://aip.scitation.org/doi/10.1063/1.4757886},
doi = {10.1063/1.4757886},
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 {textgreater} 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.},
number = {15},
urldate = {2017-10-10},
journal = {Applied Physics Letters},
author = {Manzano-Santamaría, J. and Olivares, J. and Rivera, A. and Peña-Rodríguez, O. and Agulló-López, F.},
month = oct,
year = {2012},
pages = {154103},
file = {Full Text PDF:E:\cmam_papers\files\1188\Manzano-Santamaría et al. - 2012 - Kinetics of color center formation in silica irrad.pdf:application/pdf;Full Text PDF:E:\Usuarios\Administrator\Zotero\storage\QLUKYJ87\Manzano-Santamaría et al. - 2012 - Kinetics of color center formation in silica irrad.pdf:application/pdf;Snapshot:E:\cmam_papers\files\1196\1.html:text/html;Snapshot:E:\Usuarios\Administrator\Zotero\storage\XXMEILMT\1.html:text/html},
}