Intracenter processes induced by electron beam and 337 nm laser light in CsI:Tl; Functional Materials; Vol. 26, № 3

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Parent link:Functional Materials
Vol. 26, № 3.— 2019.— [P. 454-461]
Tác giả của công ty: Национальный исследовательский Томский политехнический университет Инженерная школа новых производственных технологий Отделение материаловедения
Tác giả khác: Yakovlev V. Yu. Viktor Yurjevich, Trefilova L. N. Larisa Nikolaevna, Alekseev V. A. Vadim Aleksandrovich, Karnaukhova A. A. Anna Alekseevna, Shpilinskaya O. V. Olga Viktorovna, Lebedinsky A. M. Aleksey Mikhaylovich, Tarakhno O. Aleksey Mikhaylovich
Tóm tắt:Title screen
Investigated are the spectral-kinetic properties of the activator luminescence excited in CsI:Tl crystal by a pulsed electron beam and by a pulsed nitrogen laser at λ = 337.1 nm, that corresponds to the long-wave decline of the A-absorption band. It is found that the decay kinetics of 2.6 and 2.25 eV luminescence bands excited by an electron beam at 80 K is mono-exponential with the time constants τ = 4 μs and τ = 13 μs, respectively. The decay kinetics of each from the luminescence bands under the laser excitation is bi-exponential due to the presence of one more component with time constant τ = 900 ns. This sub-microsecond component dominates in the bi-exponential kinetics, and the value of its time constant is determined by the time of the electron transfer from the metastable ψ sub-level of the excited 62P3/2 state to the ground 62P1/2 state of Tl0 center. Phonon-assisted processes causing population of the radiative states of Tl+ centers responsible for 3.0, 2.25 and 2.6 eV luminescence bands are discussed in detail.
Ngôn ngữ:Tiếng Anh
Được phát hành: 2019
Những chủ đề:
Truy cập trực tuyến:https://doi.org/10.15407/fm26.03.454
Định dạng: Điện tử Chương của sách
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=661191

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