Spectral and temporal characteristics of Ba I emission in femtosecond laser-induced breakdown on the surfaces of aqueous solutions
- Авторы: Ilyin A.1,2, Golik S.1, Babiy M.1, Biryukova Y.1, Lisitsa V.1, Burov D.1,3, Kulchin Y.1,2
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Учреждения:
- Far Eastern Federal University
- Institute of Automation and Control Processes, Far East Branch
- Admiral Nevelskoy Maritime State University
- Выпуск: Том 43, № 9 (2017)
- Страницы: 860-862
- Раздел: Article
- URL: https://journals.rcsi.science/1063-7850/article/view/206086
- DOI: https://doi.org/10.1134/S1063785017090188
- ID: 206086
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Аннотация
Temporal behavior of the intensity of Ba I emission lines (413.24 and 553.55 nm) in plasma of optical breakdown induced by femtosecond laser pulses (800 nm, 45 fs, 0.82 mJ) on the surface of BaCl2 aqueous solution was experimentally studied as dependent on delay time td relative to the breakdown onset. The maximum intensity of the Ba I (413.24 nm) line was observed at td = 20 ns, while the intensity of the Ba I (553.55 nm) line reached a maximum at td = 40 ns. At td = 10 ns, the intensity of the Ba I (413.24 nm) line was almost three times as large as that of Ba I (553.55 nm) line (despite the about two orders of magnitude lower probability of spontaneous transition for the former line), which is explained by the recombination cascade. It is established that, in the subsystem of 5d6p3D0 and 6s6p1P0 levels, the Boltzmann distribution is not valid and the local thermodynamic equilibrium is absent.
Об авторах
A. Ilyin
Far Eastern Federal University; Institute of Automation and Control Processes, Far East Branch
Email: golik_s@mail.ru
Россия, Vladivostok, 690950; Vladivostok, 690041
S. Golik
Far Eastern Federal University
Автор, ответственный за переписку.
Email: golik_s@mail.ru
Россия, Vladivostok, 690950
M. Babiy
Far Eastern Federal University
Email: golik_s@mail.ru
Россия, Vladivostok, 690950
Yu. Biryukova
Far Eastern Federal University
Email: golik_s@mail.ru
Россия, Vladivostok, 690950
V. Lisitsa
Far Eastern Federal University
Email: golik_s@mail.ru
Россия, Vladivostok, 690950
D. Burov
Far Eastern Federal University; Admiral Nevelskoy Maritime State University
Email: golik_s@mail.ru
Россия, Vladivostok, 690950; Vladivostok, 690059
Yu. Kulchin
Far Eastern Federal University; Institute of Automation and Control Processes, Far East Branch
Email: golik_s@mail.ru
Россия, Vladivostok, 690950; Vladivostok, 690041