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首页> 外文期刊>Physics International >X-RAYS LUMINESCENCE, OPTICAL AND PHYSICAL STUDIES OF BI_2O_3-B_2O_3-SM_2O_3GLASSES SYSTEM
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X-RAYS LUMINESCENCE, OPTICAL AND PHYSICAL STUDIES OF BI_2O_3-B_2O_3-SM_2O_3GLASSES SYSTEM

机译：BI_2O_3-B_2O_3-SM_2O_3玻璃系统的X射线发光，光学和物理研究

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摘要

Sm~(3+)-doped bismuth borate glasses of the composition (50-x) Si0_2: 50B_20_3: xSm_2O_3 (where x = 0.00, 0.50, 1.00, 1.50, 2.00 and 2.50 mol%) have been synthesized by conventional melt quenching technique. In order to understand the role of Sm203 in bismuth borate glasses, the density, molar volume, refractive index and optical absorption were investigated. The results show that density, molar volume and refractive index of glasses increased with increasing Sm_2O_3 concentration. The increase of molar volume with Sm_2O_3 concentration is due to the increase of Non-Bridging Oxygen (NBOs) in the glass matrix. The optical absorption spectra were measured in the wavelength range from 300-1100 nm and the optical band gaps were determined. It was found that the optical band gap decreased with the increase of Sm_2O_3 concentration. Moreover, the x-rays luminescence of Sm_2O_3 glasses samples were measured and shows emission band at ~4G_(5/2)—~6H_(5/2) (569 nm), ~4G_(5/2)—~6H_(7/2) (598 nm), ~4G_(5/2)—~6H_(9/2) (641 nm) and ~4G_(5/2)—~6H_(11/2) (705 nm). This investigation have been used as the basis for developing optical amplifier or glass scintillator.
机译：已经通过常规的熔融淬火技术合成了组成为（50-x）SiO 2：50B_20_3：xSm_2O_3（其中x ＝ 0.00、0.50、1.00、1.50、2.00和2.50mol％）的掺Sm〜（3+）的硼酸铋玻璃。 。为了了解Sm203在硼酸铋玻璃中的作用，研究了其密度，摩尔体积，折射率和光吸收。结果表明，随着Sm_2O_3浓度的增加，玻璃的密度，摩尔体积和折射率增加。随着Sm_2O_3浓度的增加，摩尔体积的增加是由于玻璃基质中非桥氧（NBO）的增加。在300-1100nm的波长范围内测量光学吸收光谱，并确定光学带隙。发现随着Sm_2O_3浓度的增加，光学带隙减小。而且，测量了Sm_2O_3玻璃样品的x射线发光，并显示了〜4G_（5/2）-〜6H_（5/2）（569 nm），〜4G_（5/2）-〜6H_（7 / 2）（598 nm），〜4G_（5/2）-〜6H_（9/2）（641 nm）和〜4G_（5/2）-〜6H_（11/2）（705 nm）。这项研究已被用作开发光放大器或玻璃闪烁体的基础。

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