Back to Search Start Over

Incident Angle Dependent Formation of Ion Tracks in Quartz Crystal with C60+ Ions: Big Ions in Small Channels

Authors :
Hiroshi Amekura
Kazumasa Narumi
Atsuya Chiba
Yoshimi Hirano
Keisuke Yamada
Shunya Yamamoto
Yuichi Saitoh
Source :
Quantum Beam Science, Vol 6, Iss 1, p 4 (2022)
Publication Year :
2022
Publisher :
MDPI AG, 2022.

Abstract

Quartz (SiO2) crystals possess intrinsic columnar pores perpendicular to (0001) surfaces, consisting of three- and six-membered ring (3MR and 6MR) structures of Si and O atoms. The diameters of the larger pores, i.e., 6 MRs, are ~0.49 nm, while the diameters of fullerene (C60) ions are 0.7 nm, i.e., larger than either type of the pores. Transmission electron microscopy observation evidenced approximately two times longer ion tracks in the channeling condition, i.e., 0° incidence to (0001) surface, than an off-channeling condition, i.e., 7° incidence in this case, under 6 MeV C60 ion injection. The track length at the 0° incidence decreases more steeply than that at the 7° incidence with decreasing the energy from 6 MeV to 1 MeV. Finally, the track lengths at the 0° and 7° incidences become comparable, i.e., the channeling-like effect disappears at 1 MeV irradiation. This study experimentally indicates that the channeling-like effect of C60 ions is induced in quartz crystals, while the sizes of the channels are smaller than the C60 ions.

Details

Language :
English
ISSN :
2412382X
Volume :
6
Issue :
1
Database :
Directory of Open Access Journals
Journal :
Quantum Beam Science
Publication Type :
Academic Journal
Accession number :
edsdoj.0948d3cd6f7d4871a16f46064cf5911e
Document Type :
article
Full Text :
https://doi.org/10.3390/qubs6010004