EP1047949A2 - Procedes et dispositif permettant de tester un echantillon par resonance quadripolaire nucleaire - Google Patents

Procedes et dispositif permettant de tester un echantillon par resonance quadripolaire nucleaire

Info

Publication number
EP1047949A2
EP1047949A2 EP98947680A EP98947680A EP1047949A2 EP 1047949 A2 EP1047949 A2 EP 1047949A2 EP 98947680 A EP98947680 A EP 98947680A EP 98947680 A EP98947680 A EP 98947680A EP 1047949 A2 EP1047949 A2 EP 1047949A2
Authority
EP
European Patent Office
Prior art keywords
excitation
block
blocks
pulse
pulses
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP98947680A
Other languages
German (de)
English (en)
Inventor
Neil Francis Peirson
James Barras
John Alec Sydney Smith
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BTG International Ltd
Original Assignee
BTG International Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BTG International Ltd filed Critical BTG International Ltd
Priority to EP05075584A priority Critical patent/EP1574873A1/fr
Publication of EP1047949A2 publication Critical patent/EP1047949A2/fr
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/441—Nuclear Quadrupole Resonance [NQR] Spectroscopy and Imaging
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N24/00—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
    • G01N24/08—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
    • G01N24/084—Detection of potentially hazardous samples, e.g. toxic samples, explosives, drugs, firearms, weapons

Abstract

L'invention concerne des procédés et un dispositif qui permettent de tester par résonance quadripolaire nucléaire (NQR) un échantillon contenant des noyaux quadripolaires pour lesquels le temps de relaxation spin-milieu est égal à une valeur T1. On peut encore améliorer la réponse hors résonance et la sensibilité du test NQR en appliquant une excitation (sous la forme d'impulsions 'de liaison') entre deux blocs d'excitation. Selon le procédé, on utilise deux blocs d'excitation pour provoquer la résonance quadripolaire nucléaire, un certain retard existant entre les deux blocs; on détecte les signaux de réponse; et on compare les signaux de réponse produits par lesdits blocs. Le retard est inférieur à la valeur T1 des noyaux.
EP98947680A 1997-10-15 1998-10-15 Procedes et dispositif permettant de tester un echantillon par resonance quadripolaire nucleaire Ceased EP1047949A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05075584A EP1574873A1 (fr) 1997-10-15 1998-10-15 Procédés et dispositif pour l'analyse d'un échantillon par résonance quadripolaire nucléaire

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9721892.9A GB9721892D0 (en) 1997-10-15 1997-10-15 Apparatus for and method of testing a sample
GB9721892 1997-10-15
PCT/GB1998/003099 WO1999019740A1 (fr) 1997-10-15 1998-10-15 Procedes et dispositif permettant de tester un echantillon par resonance quadripolaire nucleaire

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP05075584A Division EP1574873A1 (fr) 1997-10-15 1998-10-15 Procédés et dispositif pour l'analyse d'un échantillon par résonance quadripolaire nucléaire

Publications (1)

Publication Number Publication Date
EP1047949A2 true EP1047949A2 (fr) 2000-11-02

Family

ID=10820622

Family Applications (2)

Application Number Title Priority Date Filing Date
EP05075584A Withdrawn EP1574873A1 (fr) 1997-10-15 1998-10-15 Procédés et dispositif pour l'analyse d'un échantillon par résonance quadripolaire nucléaire
EP98947680A Ceased EP1047949A2 (fr) 1997-10-15 1998-10-15 Procedes et dispositif permettant de tester un echantillon par resonance quadripolaire nucleaire

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP05075584A Withdrawn EP1574873A1 (fr) 1997-10-15 1998-10-15 Procédés et dispositif pour l'analyse d'un échantillon par résonance quadripolaire nucléaire

Country Status (4)

Country Link
EP (2) EP1574873A1 (fr)
CA (1) CA2307307A1 (fr)
GB (1) GB9721892D0 (fr)
WO (1) WO1999019740A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU3267499A (en) 1998-03-06 1999-09-20 Btg International Limited Apparatus for and method of nuclear quadrupole resonance testing a sample in thepresence of interference
GB9902000D0 (en) 1999-01-30 1999-03-17 Delta Biotechnology Ltd Process
AUPQ328299A0 (en) 1999-10-06 1999-10-28 Thorlock International Limited A method and apparatus for detecting a substance using nuclear resonance
AUPS307702A0 (en) 2002-06-20 2002-07-11 Thorlock International Limited Pulse sequences for exciting nuclear quadrupole resonance
AUPS312102A0 (en) 2002-06-21 2002-07-18 Thorlock International Limited Pulse sequences for exciting nuclear quadrupole resonance
AU2003902576A0 (en) * 2003-05-26 2003-06-12 Qrsciences Technologies Pty Ltd Method And Apparatus For Detecting Nuclear Quadrupole Resonance Signals In A Sample In The Presence Of Coherent Noise (#10)
WO2006084313A1 (fr) * 2005-02-08 2006-08-17 Qrsciences Pty Ltd Detection de signaux de resonance nucleaire quadrupole dans des substances
US7714573B2 (en) 2007-03-16 2010-05-11 Baker Hughes Incorporated Nuclear quadrupole resonance logging tool and methods for imaging therewith
US7847544B2 (en) 2007-03-16 2010-12-07 Baker Hughes Incorporated System and method for measuring formation temperature and/or pressure using nuclear quadrupole resonance

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5365171A (en) * 1992-11-30 1994-11-15 The United States Of America As Represented By The Secretary Of The Navy Removing the effects of acoustic ringing and reducing temperature effects in the detection of explosives by NQR
EP0871895B1 (fr) * 1995-02-24 2008-10-08 QRSciences Pty. Limited Procede et appareil pour tester un echantillon par resonance quadripole nucleaire

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9919740A1 *

Also Published As

Publication number Publication date
EP1574873A1 (fr) 2005-09-14
WO1999019740B1 (fr) 1999-05-27
CA2307307A1 (fr) 1999-04-22
WO1999019740A1 (fr) 1999-04-22
GB9721892D0 (en) 1997-12-17

Similar Documents

Publication Publication Date Title
JP3944235B2 (ja) サンプルの核四極子共鳴テスト方法
US6577128B1 (en) NQR method and apparatus for testing a sample by applying multiple excitation blocks with different delay times
EP1801607A2 (fr) Appareil et procédé de test NQR
US20020153891A1 (en) Methods of and apparatus for analysing a signal
US6127824A (en) Nuclear quadrupole resonance testing
GB2255414A (en) Methods and apparatus for detecting substances
EP1047949A2 (fr) Procedes et dispositif permettant de tester un echantillon par resonance quadripolaire nucleaire
EP0838036B1 (fr) Appareil et procede permettant de tester un echantillon par resonance quadripolaire nucleaire
GB2262610A (en) Multiple-echo nqr analysis
US20060226838A1 (en) NQR method and apparatus for testing a sample by applying multiple excitation blocks with different delay times
NL194950C (nl) Werkwijze en inrichting voor het testen van een monster.
WO2004109314A1 (fr) Systeme de controle de la resonance nucleaire quadrupole
WO1998019175A1 (fr) Appareil a resonance magnetique ayant un 'temps mort' reduit
US7791342B2 (en) Cancellation of ringing artifacts and far field interference in nuclear quadrupole resonance
CA2263538C (fr) Mesure de resonance quadrupole nucleaire
GB2319852A (en) Testing a sample by nuclear resonance
JPH04326051A (ja) パルス核四極子共鳴装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20000406

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

17Q First examination report despatched

Effective date: 20030616

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 20050403