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首页> 外文期刊>Nuclear Instruments & Methods in Physics Research. B, Beam Interactions with Materials and Atoms >High-sensitivity instrumentation for spectrally-resolved optically detected X-ray absorption spectroscopy
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High-sensitivity instrumentation for spectrally-resolved optically detected X-ray absorption spectroscopy

机译：用于光谱分辨光学检测X射线吸收光谱的高灵敏度仪器

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摘要

The design use and implementation of simple but highly efficient instrumentation is described, that allows for the possibility of wavelength-resolving optically detected X-ray absorption spectra (OD-XAS) of even the weakest luminescent systems emitting in the range 380-1020 nm (1.2-3.3 eV). The instrument, based on linearly-variable interference filters, provides significant improvement in light throughput as compared with standard grating monochromators, and is used to demonstrate the power of wavelength-resolved OD-XAS in unravelling luminescence processes that are typically encountered in two common types of systems: (ⅰ) single-phase materials that possess a combination of radically different recombination pathways and (ⅱ) materials where the recombination mechanisms are essentially invariant throughout the system, but which are chemically phase-separated on a sub-microscopic scale.
机译：描述了一种简单但高效的仪器的设计使用和实现，该仪器甚至可以对波长范围为380-1020 nm的最弱发光系统进行波长分辨的光学检测X射线吸收光谱（OD-XAS）进行解析。 1.2-3.3 eV）。该仪器基于线性可变干涉滤光片，与标准光栅单色仪相比，可显着提高光通量，可用于演示在两种常见类型中常见的解散发光过程中波长分辨的OD-XAS的功能系统的组成：（ⅰ）具有根本不同的重组途径的组合的单相材料，和（ⅱ）重组机理在整个系统中基本不变的材料，但它们在亚显微规模上是化学相分离的。

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