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

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

Dettagli Bibliografici
Parent link:Functional Materials
Vol. 26, № 3.— 2019.— [P. 454-461]
Ente Autore: Национальный исследовательский Томский политехнический университет Инженерная школа новых производственных технологий Отделение материаловедения
Altri autori: 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
Riassunto: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.
Lingua:inglese
Pubblicazione: 2019
Soggetti:
электронный ресурс
труды учёных ТПУ
thallium doped cesium iodide
luminescence
Tl<sup>+</sup>-perturbed exciton
decay kinetics
charge transfer
легированные соединения
люминесценция
Accesso online:https://doi.org/10.15407/fm26.03.454
Natura: MixedMaterials Elettronico Capitolo di libro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=661191

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