A pulse nuclear quadrupole resonance spectrometer

被引：0
|
作者：
V. V. Brailovskii
机构：
[1] Jurij Fed’kovych Chernivtsi National University,
来源：
Instruments and Experimental Techniques | 2010年 / 53卷
关键词：
Nuclear Quadrupole Resonance; Radio Pulse; Wave Impedance; Synchronous Detector; Nuclear Quadrupole Resonance Spectrum;
D O I：
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学科分类号：
摘要：
A pulse nuclear quadrupole resonance (NQR) spectrometer intended for studying the resonance signal spectra of nuclei of solid substances in a 1- to 30-MHz band is described. The pulse duration of excitation pulses is regulated from 10 to 100 μs at a 5- to 100-Hz pulse repetition rate. The spectrometer ensures a probing pulse power of up to 1.5 kW and is characterized by the availability of an NQR signal simulator, a low-noise preamplifier, and a phase detector with a dynamic range exceeding 100 dB. The efficiency of the spectrometer has been tested by studying the NQR spectrum of 14N nuclei in urotropine. The spectrometer ensured a possibility of detecting 0.2 g of urotropine.
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页码：284 / 287
页数：3
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