HTS sensors for NQR spectroscopy

Author

Wilker, Charles ; McCambridge, James D. ; Laubacher, Daniel B. ; Alvarez, Robby L. ; Guo, Jiunn Sheng ; Carter, Charles F., III ; Pusateri, Michael A. ; Schiano, Jeffrey L.

Author_Institution

E.I. du Pont de Nemours & Co., Wilmington, DE, USA

Volume

1

fYear

2004

fDate

6-11 June 2004

Firstpage

143

Abstract

Using a high temperature superconductor (HTS) sensor, we have detected a ¹⁴N nuclear quadrupole resonance (NQR) signal from a room temperature sodium nitrite (NaNO₂) sample. This demonstrates the feasibility of using such sensors for the NQR detection of contraband, e.g. explosives. The sensor is composed of two high Q-value, self-resonant HTS devices strongly coupled to each other that detect the induced magnetization of the target compound. We briefly describe our techniques for making, adjusting the resonant frequency and spoiling the Q-value of the HTS sensors.

Keywords

explosions; high-temperature superconductors; magnetic resonance; nitrogen; nuclear quadrupole resonance; sensors; sodium compounds; spectroscopy; ¹⁴N; HTS sensors; NQR detection; NQR spectroscopy; NaNO₂; Q-value; contraband; explosives detection; high temperature superconductor; induced magnetization detection; magnetic resonance; nuclear quadrupole resonance; resonant frequency; room temperature; self-resonant HTS device; superconductor devices; Couplings; Explosives; High temperature superconductors; Magnetic sensors; Magnetization; Resonance; Resonant frequency; Sensor phenomena and characterization; Spectroscopy; Temperature sensors;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2004 IEEE MTT-S International

ISSN

0149-645X

Print_ISBN

0-7803-8331-1

Type

conf

DOI

10.1109/MWSYM.2004.1335824

Filename

1335824