遥测NQR装置的宽带大功率发射机及其实验研究

A BROADBAND HIGH-POWER EMITTER DESIGNED FOR REMOTE NOR DEVICE AND ITS APPLICATION

本文首先从遥测NQR方法检测爆炸物和毒品的实际(?)发,分析了研制大功率发射机的重要性,进而阐述了发射机的设计和制作方法:最后,介绍了发(?)其它装置对亚硝酸钠(NaNO_2)样品进行的遥测实验,测量了发射线圈与样品距离跟接受信号(?)的关系,并讨论了探头回路Q值对检测系统恢复时间的影响.

Remote NQR device requires powerful emitter to meet the need for the dctection of cxplosives and drugs hidden in baggage or in packages. A hroadband high--power pulsed rf emitter was de-signed and made based on transistors according to the schem/e of power. With the emitter and some other attachments,studies are conducted on remote NQR on a Braker MSL-300 NMR spectrometer.including the detection of 14N -NQR signals in a NaNo2 powder, relationship be-tween signal intensity and distance from remote coil to sample,and relationship between coil Q and total recovery time of the remote device.