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Ion beam induced damage in CaF_2

Wie, C. R. and Vreeland, T., Jr. and Tombrello, T. A. (1985) Ion beam induced damage in CaF_2. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 9 (1). pp. 25-29. ISSN 0168-583X. https://resolver.caltech.edu/CaltechAUTHORS:20141030-131924404

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Abstract

The change in lattice parameter and the induced damage are studied in single crystal CaF_2 bombarded by a 15 MeV Cl ion beam. The lattice parameter change (strain) and the damage for increasing ion beam dose (5 × 10^(12)/cm^2 to 7 × 10^(15)/cm^2) is observed via X-ray rocking curve analysis using a double-crystal diffractometer and X-ray reflection topography. The ion beam energy (range = ∼ 4.5 μm in CaF_2) is such that both the electronic region and the nuclear cascade region of energy loss show up in the diffraction signal. By kinematical X-ray diffraction theory analysis, the progress of strain/damage depth profile with increasing beam dose is shown explicitly. The increase in strain is nonlinear with beam dose for the dose range studied. For increasing beam dose, the strain level in the electronic energy loss region is fixed, while that in the nuclear collision loss region increases effectively until that region becomes completely amorphous.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/0168-583X(85)90772-4DOIArticle
http://www.sciencedirect.com/science/article/pii/0168583X85907724PublisherArticle
Alternate Title:Ion beam induced damage in CaF2
Additional Information:© 1985 Published by Elsevier B.V. Received 9 November 1984. One of the authors (C.R. Wie) would like to thank V.S. Speriosu for help in the lab, when he first started this project. This work was supported in part by the NSF (DMR83-18274).
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Funding AgencyGrant Number
NSFDMR83-18274
Issue or Number:1
Record Number:CaltechAUTHORS:20141030-131924404
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20141030-131924404
Official Citation:Wie, C. R., Vreeland Jr, T., & Tombrello, T. A. (1985). Ion beam induced damage in CaF2. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 9(1), 25-29. doi: http://dx.doi.org/10.1016/0168-583X(85)90772-4
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:51080
Collection:CaltechAUTHORS
Deposited By: Jason Perez
Deposited On:30 Oct 2014 21:00
Last Modified:03 Oct 2019 07:29

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