Autor: Purlys, R. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Supercrystallization of NaCl from Solution Irradiated by Soft X-Rays
Autorzy:: Janavičius, A.
Purlys, R.
Rinkūnas, R.
Powiązania:: https://bibliotekanauki.pl/articles/1400159.pdf
Data publikacji:: 2013-04
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 81.10.Dn
64.70.kp
32.80.Hd
Opis:: It was found that irradiation of a water solution of NaCl with the diffractometer DRON3-M (Russian device) had a large influence on two-step processes of crystallization. The irradiation in the first stage of crystallization of the solution produces metastable radicals of water and excited seeds, which stimulate a very fast crystallization after switching off irradiation. After the crystals reach a sufficient size, the crystal growth can be explained by creation of vacancy-interstitial pairs in the growing crystal due to irradiation. The increase of linear dimensions of the growing irradiated crystals is proportional to the square root √t of crystallization time because most important place in crystallization takes the ions diffusion by irradiated vacancies.
Źródło:: Acta Physica Polonica A; 2013, 123, 4; 777-781
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Investigation and Generation of Vacancies in Alpha Quartz by Soft X-Rays
Autorzy:: Janavičius, A.
Purlys, R.
Bulkšas, A.
Balakauskas, S.
Mekys, A.
Šablinskas, V.
Powiązania:: https://bibliotekanauki.pl/articles/1585100.pdf
Data publikacji:: 2009-12
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 81.40.-z
78.30.-j
91.60.Mk
Opis:: In this paper we applied the soft-X-ray radiation for generation of point defects, vacancies, and chemical reactions in quartz $(SiO_{2})$, taking into account our earlier made similar experiments with crystal silicon and importance of quartz for applications in many fields. In this case only radiative Auger's effects with electrons and electric dipole of atoms transitions can generate metastable vacancies, point defects, and induce chemical reactions. Usually, for point defects generation doses of gamma rays are used. We measured values of the Bragg reflections of X-rays and calculated mean square deviations of atoms in crystal lattice for defining the dynamics of irradiated point defects. We accomplished infrared measurements for establishing of generated chemical reactions, and conductivity measurements were also done.
Źródło:: Acta Physica Polonica A; 2009, 116, 6; 1076-1080
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Superdiffusion in Si Crystal Lattice Irradiated by Soft X-Rays
Autorzy:: Janavičius, A.
Balakauskas, S.
Kazlauskienė, V.
Mekys, A.
Purlys, R.
Storasta, J.
Powiązania:: https://bibliotekanauki.pl/articles/1812042.pdf
Data publikacji:: 2008-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 66.30.-h
78.70.Ck
Opis:: We considered the reasons of superdiffusivity and measured profiles of boron and phosphorus in crystalline silicon at room temperature. The superdiffusivity or ultrafast diffusion of metastable vacancies at room temperature in Si crystal irradiated by soft X-rays was obtained experimentally. In this work, we presented experimentally obtained diffusion coefficients of singly and doubly negatively charged long-lived excited vacancies. These high concentration charged metastable vacancies (about $10^{13} cm^{-3}$) at room temperature can very fast diffuse changing electrical conductivity and the Hall mobility of carriers. We measured the superdiffusivity of negatively charged vacancies, generated by the Auger effect in the regions of the sample, which were not affected by X-rays. In this paper, we presented the obtained superdiffusion profiles of boron and phosphorus in crystalline silicon measured with secondary-ion mass spectrometer.
Źródło:: Acta Physica Polonica A; 2008, 114, 4; 779-790
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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