Ultrasonic study of the tunneling states in neutron-irradiated quartz in the transition region

Els Peeters; Christiane Laermans; D. A. Parshin; M. Coeck

doi:10.1016/S0168-583X(98)00062-7

Ultrasonic study of the tunneling states in neutron-irradiated quartz in the transition region

Els Peeters, Christiane Laermans, D. A. Parshin, M. Coeck

Research output › peer-review

Abstract

The ultrasonic absorption is measured in neutron-irradiated quartz. The irradiation dose is 8.9 × 10¹⁹ n/cm² (E ≥ 0.3 MeV). Due to this irradiation dose, the sample is situated in the transition region between mainly crystalline and fully amorphous quartz. The experiment is carried out as a function of temperature at a frequency of 115 MHz. The results are analyzed in the framework of the tunneling model and the soft potential model. Analysis confirms that the density of states goes through a maximum and also shows that the cross-over temperature from tunneling to thermal activation is rather high.

Original language	English
Pages (from-to)	634-639
Number of pages	6
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	141
Issue number	1-4
DOIs	https://doi.org/10.1016/S0168-583X(98)00062-7
State	Published - May 1998

Funding

The authors thank the SCK·CEN (Mol, Belgium) for the neutron irradiation and the FWO for financial support. D.A. Parshin gratefully acknowledge pleasant hospitality and financial support of K.U. Leuven during his stay there.

Funders	Funder number
Fonds Wetenschappelijk Onderzoek

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

Access to Document

10.1016/S0168-583X(98)00062-7

Cite this

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title = "Ultrasonic study of the tunneling states in neutron-irradiated quartz in the transition region",

abstract = "The ultrasonic absorption is measured in neutron-irradiated quartz. The irradiation dose is 8.9 × 1019 n/cm2 (E ≥ 0.3 MeV). Due to this irradiation dose, the sample is situated in the transition region between mainly crystalline and fully amorphous quartz. The experiment is carried out as a function of temperature at a frequency of 115 MHz. The results are analyzed in the framework of the tunneling model and the soft potential model. Analysis confirms that the density of states goes through a maximum and also shows that the cross-over temperature from tunneling to thermal activation is rather high.",

keywords = "Low temperature properties, Neutron irradiation, Quartz, Ultrasonics",

author = "Els Peeters and Christiane Laermans and Parshin, {D. A.} and M. Coeck",

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T1 - Ultrasonic study of the tunneling states in neutron-irradiated quartz in the transition region

AU - Peeters, Els

AU - Laermans, Christiane

AU - Parshin, D. A.

AU - Coeck, M.

PY - 1998/5

Y1 - 1998/5

N2 - The ultrasonic absorption is measured in neutron-irradiated quartz. The irradiation dose is 8.9 × 1019 n/cm2 (E ≥ 0.3 MeV). Due to this irradiation dose, the sample is situated in the transition region between mainly crystalline and fully amorphous quartz. The experiment is carried out as a function of temperature at a frequency of 115 MHz. The results are analyzed in the framework of the tunneling model and the soft potential model. Analysis confirms that the density of states goes through a maximum and also shows that the cross-over temperature from tunneling to thermal activation is rather high.

AB - The ultrasonic absorption is measured in neutron-irradiated quartz. The irradiation dose is 8.9 × 1019 n/cm2 (E ≥ 0.3 MeV). Due to this irradiation dose, the sample is situated in the transition region between mainly crystalline and fully amorphous quartz. The experiment is carried out as a function of temperature at a frequency of 115 MHz. The results are analyzed in the framework of the tunneling model and the soft potential model. Analysis confirms that the density of states goes through a maximum and also shows that the cross-over temperature from tunneling to thermal activation is rather high.

KW - Low temperature properties

KW - Neutron irradiation

KW - Quartz

KW - Ultrasonics

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