Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Christiane Laermans"'
Autor:
Christiane Laermans, Michèle Coeck
Publikováno v:
Defect and Diffusion Forum. :47-66
Publikováno v:
Philosophical Magazine Letters. 80:807-812
Semiconducting crystalline materials that are poor conductors of heat are important as thermoelectric materials and for technological applications involving thermal management. A combination of neutron scattering, lowtemperature ultrasonic attenuatio
Autor:
B. Van Waeyenberge, N. Balcaen, Charles Dauwe, T. van Hoecke, Danny Segers, Michèle Coeck, Christiane Laermans
Publikováno v:
Journal of Applied Physics. 87:3674-3677
Neutron transmutation doping of n-type silicon was obtained by irradiating the samples with thermal neutrons in order to create P atoms. Positron lifetime measurements were carried out and the evolution of the induced defects was studied by thermal a
Publikováno v:
The European Physical Journal B. 10:623-633
Neutron-irradiated quartz is a promising model system to learn more about the low-energy excitations (tunneling states) in vitreous silica and in similar glasses. We present the first systematic study of the elastic properties of neutron-irradiated q
Publikováno v:
Physica B: Condensed Matter. :139-142
We present results of low-frequency acoustic (vibrating reed) measurements on quartz crystals irradiated with six different neutron doses up to 2×10 20 n/cm 2 in the temperature range from 7 mK to 1 K. From the temperature dependence of the sound ve
Publikováno v:
Physica B: Condensed Matter. :152-155
Measurements of the changes in ultrasonic velocity were performed on bulk single-crystalline silicon irradiated with fast-neutron doses up to 1.7×1021 and 3.2×1021 n/cm2 (E>0.1 MeV). Compared to the unirradiated material, a large additional effect
Autor:
D. A. Parshin, Christiane Laermans
Publikováno v:
Physical Review B. 58:11099-11102
The low-temperature internal friction data in neutron-irradiated quartz and amorphous ${\mathrm{SiO}}_{2}$ are compared. The region of the tunneling plateau in irradiated quartz extends to much higher temperatures in comparison with amorphous ${\math
Autor:
Christiane Laermans, M. Coeck
Publikováno v:
Physical Review B. 58:6708-6711
Measurements of the variation of the low-temperature (LT) ultrasonic velocity and Raman scattering spectroscopy were performed on pure, bulk single-crystalline silicon, both unirradiated and irradiated with fast-neutron doses up to 1.7 and $3.2\ifmmo
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 141:585-588
We have performed low-temperature ultrasonic attenuation measurements on bulk single-crystalline silicon irradiated with a fast-neutron dose of 3.2 × 1021 n/cm2 (E > 0.1 MeV) at a frequency of 283 MHz. The data are analyzed in the framework of the t
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 141:634-639
The ultrasonic absorption is measured in neutron-irradiated quartz. The irradiation dose is 8.9×10 19 n/cm 2 ( E ⩾0.3 MeV). Due to this irradiation dose, the sample is situated in the transition region between mainly crystalline and fully amorphou