Low-frequency acoustic properties of neutron-irradiated quartz

Authors
Classen, J Rohr, I Enss, C Hunklinger, S Laermans, C
Citation
J. Classen et al., Low-frequency acoustic properties of neutron-irradiated quartz, PHYSICA B, 263, 1999, pp. 139-142
Citations number
8
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526 → ACNP
Volume
263
Year of publication
1999
Pages
139 - 142
Database
ISI
SICI code
0921-4526(199903)263:<139:LAPONQ>2.0.ZU;2-A
Abstract
We present results of low-frequency acoustic (vibrating reed) measurements on quartz crystals irradiated with six different neutron doses up to 2 x 10 (20) n/cm(2) in the temperature range from 7 mK to 1 K. From the temperatur e dependence of the sound velocity and of the internal friction information on the density of states of tunneling states and their coupling to phonons is obtained. Comparisons are made with recent ultrasonic measurements. (C) 1999 Elsevier Science B.V. All rights reserved.