Temperature dependence of scintillation properties of SrMoO4

Abstract

Studies of the X-ray luminescence and scintillation properties of a SrMoO 4 crystal as function of temperature down to T=10 K have been carried out. The luminescence in SrMoO 4 is quenched at room temperature, but below T<200 K the crystal exhibits a broad emission band with a maximum at a wavelength of 520 nm. The emission is attributed to the radiative decay of self-trapped excitons and defects acting as traps for the exactions at low temperatures. Such complex character of radiative decay is reflected in the kinetics which contains several components plus a contribution from delayed recombination at low temperatures. The temperature dependence of scintillation light output of SrMoO 4 was studied. Comparing with a reference ZnWO 4 crystal measured under the same experimental conditions it was found that the light output of SrMoO 4 is 15±5%. It is suggested, therefore, that there is scope for optimisation of strontium molybdate for application as scintillator in cryogenic rare event searches.

Scintillation in Low-Temperature Particle Detectors

“…The interest in the material has been renewed recently in view of a progress in the crystal growth (Cz method). The measurements of a SrMoO 4 scintillation at 11 K, carried out using the multi-photon counting technique [513], has determined its light yield to be 15(5)% of ZnWO 4 [361], that is L/H γ(β) ∼ (1-3) keV/MeV taking into account the results for ZnWO 4 crystals (Section 3.1.6).…”

Scintillation Characteristics of Pr-doped Gd2Si2O7 Single Crystal

“…The longer decay times observed in the 1.0 and 2.0 mol% Pr-doped samples would be caused by the delayed recombination. (35) Figure 7 presents the PH spectra of Pr:GPS samples under γ-ray irradiation from 137 Cs. Photoabsorption peaks of the 0.1, 0.3, 0.5, 1.0, and 2.0% Pr-doped samples were observed at 180, 200, 210, 770, and 520 channels, respectively.…”

ABO4 type scheelite phases in (Ca/Sr)MoO4 - BiVO4 - Bi2Mo3O12 systems: synthesis, structure and optical properties

“…Materials based on CaMoO 4 and SrMoO 4 are of interest for science and technology as catalysts and photocatalysts, scintillation detectors, solid-state lasers, pigments as well as for using in photoluminescent and microwave devices due to a wide variety of functional properties [1][2][3][4][5][6][7][8]. The latter strongly depend on not only the nature of dopants [2][3] but also on synthesis techniques employed [2,3,8] and a place of doping.…”