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本文介绍一种边限振荡器型核四极矩共振(NQR)谱仪,并给出了它对氯酸钾KClO_3、氯酸钠NaClO_3、氯化钠NaCl等固态化合物中氯的同位素~(35)Cl和~(37)Cl的NQR谱实测结果。在室温下该谱仪对~(35)Cl的NQR频率测量精度约5×10(-6)。信噪比S/N≥80。在77K到393K温区测量了多晶KClO_3样品中~(35)Cl的NOR频率和温度的关系。
In this paper, a boundary-oscillator quadrupole resonance (NQR) spectrometer is introduced and its isotopic composition of ~ (35) Cl in chlorine compounds such as potassium chloride KClO 3, sodium chlorate NaClO 3 and sodium chloride NaCl And ~ (37) Cl NQR spectra measured results. The measurement accuracy of NQR frequency of ~ (35) Cl at room temperature is about 5 × 10 (-6). Signal to noise ratio S / N ≥ 80. The relationship between the temperature and the NOR frequency of ~ (35) Cl in polycrystalline KClO_3 samples was measured in the temperature range from 77K to 393K.