The mechanoluminescence (ML) was detected, when Sm₂(SO₄)₃·8H₂O crystals were exposed to a titanium waveguide with a 22 kHz ultrasonic disperser. It was shown that ML of this salt is not recorded during grinding with a stirrer compared to that found previously for any other Ln³⁺ crystal hydrates (Ln = Ce, Pr, Gd, Eu, Tb, and Dy). This is mainly because of low quantum yield of Sm³⁺ photoluminescence (PL) compared to those of these ions. The ultrasound increases significantly the rate and intensity of a mechanical action on the crystals to provide a stable and bright glow sufficient to record an ML spectrum. The lines of molecular nitrogen are observed at 290–430 nm in the luminescence spectrum in air atmosphere. The luminescence of Sm³⁺ ion is also detected with maxima at 560, 595, 640, 700, and 781 nm that correspond to the ⁴G_5/2 → ⁶H_j/2 transitions and coincide with quasilines in a PL spectrum of the samarium(III) sulfate crystals. The lines of N₂ arise due to discharges in the gas phase between surfaces charged oppositely during the ultrasonic treatment of crystals. The ML of Sm³⁺ ion is probably due to the excitation of luminescence by electroluminescence of crystal phosphors, namely, due to the separation and recombination of charge carriers in the electric field of a crystalline layer arising during mechanical action.

_{当Sm 2} (SO ₄ ) ₃ ·8H ₂ O晶体暴露于具有22 kHz超声波分散器的钛波导时，检测到机械发光(ML) 。结果表明，与之前发现的任何其他 Ln ³⁺晶体水合物（Ln = Ce、Pr、Gd、Eu、Tb 和 Dy）相比，在用搅拌器研磨期间没有记录该盐的 ML。这主要是因为Sm ^{3+的量子产率较低}与这些离子的光致发光（PL）相比。超声波显着增加了晶体上机械作用的速率和强度，以提供足以记录 ML 光谱的稳定且明亮的光芒。在空气气氛中的发光光谱中，在 290-430 nm 处观察到分子氮的谱线。^{还检测到 Sm 3+}离子的发光，其最大值位于 560、595、640、700 和 781 nm，对应于⁴ G _5/2 → ⁶ H _j/2跃迁，并且与 PL 光谱中的准线一致。硫酸钐(III)晶体。_{N 2}的线晶体超声波处理过程中，由于带相反电荷的表面之间的气相放电而产生。^{Sm 3+}离子的ML可能是由于晶体荧光粉的电致发光激发发光，即由于机械作用过程中产生的晶体层电场中电荷载流子的分离和重组。