mriselMagnetic Resonance in SolidsMagnetic Resonance in Solids2072-5981Kazan Federal University10.26907/mrsej-19413mrisel-75Research ArticleСтатьиLow-temperature luminescence spectrum of forbidden 4f135d‐4f14 transitions in CaF2:Lu3+ crystalSolovyevO. V.

Kremlevskaya 18, Kazan 420008

oleg.solovyev@mail.ruMakhovV. N.

Leninskiy Prospekt 53, Moscow 119991

StryhanyukH.

Department of Isotope Biogeochemistry, 04318 Leipzig

KirmM.

W. Ostwald Str. 1, Tartu 50411

Kazan Federal UniversityRussian FederationP.N. Lebedev Physical InstituteRussian FederationHelmholtz Centre for Environmental Research ‐ UFZGermanyInstitute of Physics, University of TartuEstonia201906062019214SPECIAL ISSUE dedicated to Boris Z. Malkin's 80th birthday19413 (7 pp.)Copyright © Solovyev O.V., Makhov V.N., Stryhanyuk H., Kirm M., 20242024Solovyev O.V., Makhov V.N., Stryhanyuk H., Kirm M.Solovyev O.V., Makhov V.N., Stryhanyuk H., Kirm M.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.mrsej.ru/jour/article/view/75

The Lu3+ 4f 135d‐4f 14 VUV luminescence in CaF2:Lu3+ crystal at 8 K was studied with a high spectral resolution using synchrotron radiation excitation. Absence of a zero-phonon line in the recorded spectrum was explained and features in the recorded spectrum were reproduced by simulation based on the microscopic model of electron-phonon interaction and the developed theory of non-Condon spectra.

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The authors declare that there are no conflicts of interest present.