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1. (WO1999006854) NUCLEAR QUADRUPOLE RESONANCE (NQR) METHOD AND PROBE FOR EMITTING RF FIELDS IN DIFFERENT DIRECTIONS TO DISTINGUISH NQR FROM ACOUSTIC RINGING INDUCED IN A SAMPLE

Pub. No.:    WO/1999/006854    International Application No.:    PCT/US1998/016166
Publication Date: Fri Feb 12 00:59:59 CET 1999 International Filing Date: Tue Aug 04 01:59:59 CEST 1998
IPC: G01R 33/44
Applicants: THE GOVERNMENT OF THE UNITED STATES, represented by THE SECRETARY OF THE NAVY
Inventors: GARROWAY, Allen, N.
MILLER, Joel, B.
Title: NUCLEAR QUADRUPOLE RESONANCE (NQR) METHOD AND PROBE FOR EMITTING RF FIELDS IN DIFFERENT DIRECTIONS TO DISTINGUISH NQR FROM ACOUSTIC RINGING INDUCED IN A SAMPLE
Abstract:
A nuclear quadrupole resonance (NQR) method and probe for emitting RF fields in different directions to distinguish NQR from acoustic ringing induced in a sample. Generally, an RF field is emitted along an RF field axis towards a sample (S200) to induce a resonance signal in the sample. The resonance signal includes NQR and acoustic ringing. The resonance signal is detected along the RF field axis (S210). The acoustic ringing is detected along a direction orthogonal to the RF field axis (S220 and S230). The NQR in the resonance signal is then distinguished (S240) from the acoustic ringing in the resonance signal.