Patent ID: 7106058

Claim:
A nuclear quadrupole resonance detection system for detecting contraband, comprising: a) a container having a detection panel with an outer surface and an inner surface; b) at least one copper or silver shielded loop-resonator coil used solely for exciting the nuclear quadrupole resonance frequencies of a contraband source positioned near the outer surface of the detection panel, wherein the at least one shielded loop-resonator coil is located within the container in close proximity to the inner surface of the detection panel; and c) at least one high temperature superconductor coil used solely for detecting the nuclear quadrupole resonance frequencies of the contraband source positioned near the outer surface of the detection panel, wherein the at least one high temperature superconductor coil is a self-resonant planar coil and is located within the container in close proximity to the inner surface of the detection panel.