基于核四极共振的爆炸模拟物探测研究

针对当前爆炸物探测中存在的突出问题,基于固体物理学相关理论和核四极共振基本原理,给出一种具有本征探测能力的核四极共振爆炸物探测方法. 该方法以爆炸物分子中普遍存在的¹⁴N核为探测对象,探测不同分子结构所具有的不同核四极共振特征信号. 试验测得亚硝酸钠、乌洛托品、尿素和硫脲等几种爆炸模拟物的核四极共振信号. 试验结果表明,该探测方法能本证标识各被探物是一种准确有效的本征探测方法.

The Detection of Explosive Simulants Based on Nuclear Quadrupole Resonance

Aimed at prominent problems existing in explosive detection, based on related theories of solid-state physics and basic principles of nuclear quadrupole resonance, nuclear quadrupole resonance detection technique with intrinsic detection ability has been provided. This technique focuses on the detection of nuclei ¹⁴N that widely exist in explosive molecules, because different molecular structure has different characteristic signals induced by nuclear quadrupole resonance. Some nuclear quadrupole resonance signals from several explosive simulants, such as sodium nitrite, hexamethylenetetramine, urea and thiourea, has been experimentally obtained. The experimental results indicate that this detection technique can intrinsically identify various object substance, that is to say, it is an accurate and effective intrinsic detection technique.