The influence of X-ray irradiation on elastic, dynamical and structural characteristics of strained LiF crystals
The influence of a preliminary deformation ε = 0.4% and X-ray irradiation to exposure doses of 400 and 800 R on the frequency dependence of the sound velocity v(f) in LiF crystals in the frequency interval 37.5…172.5 MHz and at room temperature has been studied using the pulsed technique. The coef...
Збережено в:
| Дата: | 2018 |
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| Автори: | , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2018
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| Назва видання: | Вопросы атомной науки и техники |
| Теми: | |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/147032 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | The influence of X-ray irradiation on elastic, dynamical and structural characteristics of strained LiF crystals / О.M. Petchenko, G.О. Petchenko, S.M. Boiko // Вопросы атомной науки и техники. — 2018. — № 2. — С. 25-28. — Бібліогр.: 14 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | The influence of a preliminary deformation ε = 0.4% and X-ray irradiation to exposure doses of 400 and 800 R
on the frequency dependence of the sound velocity v(f) in LiF crystals in the frequency interval 37.5…172.5 MHz
and at room temperature has been studied using the pulsed technique. The coefficient of dynamic viscosity B and the
dislocation density Λ were found to be independent of the irradiation dose. The absolute values of B were found to
be lower and the values of Λ higher by an order of magnitude than the corresponding values obtained with the use of
the most reliable techniques, such as the methods of high-frequency internal friction and etch pit counting respectively. |
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