Noninvasive Mail Inspection System with Terahertz Radiation

被引：89

作者：

Hoshina, Hiromichi ^{[1
]}

Sasaki, Yoshiaki

Hayashi, Aya

Otani, Chiko

Kawase, Kodo

机构：

[1] RIKEN, Aoba Ku, Sendai, Miyagi 9800845, Japan

来源：

APPLIED SPECTROSCOPY | 2009年 / 63卷 / 01期

关键词：

Terahertz wave; Drug analysis; Explosives analysis; Fingerprint spectrum; Mail; Spectroscopy; TIME-DOMAIN SPECTROSCOPY;

D O I：

10.1366/000370209787169713

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Using the high penetrability of the terahertz waves and the characteristic absorption spectra in this frequency range, we have built a noninvasive mail inspection system targeting drugs and explosives. The system is composed of two stages; in the first stage, the scattering of a continuous terahertz wave is used for selecting mail that contains concealed powder; in the second stage, the absorption spectrum of the suspicious mail is measured and the material is identified using a terahertz spectrum database. We evaluated the performance and the limits of the inspection system.

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收藏

页码：81 / 86

页数：6

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