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. http://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 | |||||||||
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| 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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| Record Number: | CaltechAUTHORS:20141030-131924404 | |||||||||
| Persistent URL: | http://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: | 30 Oct 2014 21:00 |
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