Abstract a nuclear quadrupole resonance detector has been developed. A system for detecting a target substance within a class of explosives and narcotics containing quadrupolar nuclei through the use of nuclear quadrupole resonance nqr. Quadrupole resonance spectroscopic study of narcotic. Read quadrupole resonance spectroscopic study of narcotic materials, proceedings of spie on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. The quadrupole mass analyzer is one type of mass analyzer used in mass spectrometry. Magnetic resonance can be observed from nuclei with a magnetic dipole moment, that is, nuclei with a spin quantum number, i. Custom device fabrication is supported by a strong network of specialized manufacturing shops. What are inplane outofplane dipole quadrupole plasmon. The system applies an rf signal to a coil 34 to excite the substance under test.
If the target material is present, an nqr signal will be picked up by the same coil, that signal is compared with known nqr signals in. Nuclear quadrupole resonance for explosive detection. The development facility is equipped with rf electronics fabrication tools, testing instrumentation, and analytical and design software. The nqr resonance is mediated by the interaction of the electric field gradient efg with the quadrupole moment of the nuclear charge distribution. Temperature effects in nuclear quadrupole resonance spectroscopy. In mri magnetic resonance imaging, the nuclei of hydrogen atoms in tissues are subjected to a highfrequency magnetic field. Unlike nmr, nqr is applicable only to solids and not liquids, because in liquids the quadrupole moment averages out. Transmission through the quadrupole mass spectrometer mass. Us6847208b1 tube array coil for quadrupole resonance qr. An inspection system including a radio frequency rf subsystem and a quadrupole resonance qr tube array coil. Free download quantum resonance magnetic analyzer software. The triple quadrupole mass spectrometer is capable of product ion, precursor ion, and neutral loss scanning.
Quadrupole resonance article about quadrupole resonance. A selective absorption phenomenon observable in a wide variety of polycrystalline compounds containing nonspherical atomic nuclei when placed in a. The longlasting triplet state or any other dark state is less populated when the illumination is applied in shorter pulses at the same intensity. Quadrupole resonance scanner for narcotics detection. Application of nuclear quadrupole resonance to detection of explosives and research activities at ciae shengyun zhu, xing li, zhongcheng lu, guobao wang, and weiguo shu china institute of atomic energy p. Sina balk r abandoned landmines and terrorist bomb attacks are severe issues threatening our society. This type of mass analyzer separates ions based on the stability of their flight trajectories through an oscillating electric field in the quadrupole. Nuclear quadrupole resonance detection of explosives. This detector targets to rdx, a high explosive inside an antipersonnel landmine, buried up to 15 cm deep. These instruments have been used to identify proteins extracted from 2dpage gels 37, to characterize phosphopeptides 38, and to identify glycopeptides 39. Take a test beam picture with zero current applied to quadrupole q2. Resonant scanning in laser confocal microscopy microscopyu. One resonance is a massachusetts llc with operations in san diego, california.
Consequently, more fluorochromes are available for the fluorescence process brighter images and fewer fluorochromes. The shoe scanner was developed with an openaccess chassis and scanning chamber that allows passengers to stand in the system in a natural position during the scanning process. May 16, 2008 the detection of explosives is a challenging topic. Single analyzer precursor ion scans in a linear quadrupole. It is also known as a transmission quadrupole mass spectrometer, quadrupole mass filter, or quadrupole mass spectrometer. The micropole system is one of the smallest complete mass spectrometer systems. In a quadrupole mass spectrometer the quadrupole is the mass analyzer the component of the instrument responsible for selecting sample ions based on their masstocharge ratio. Fast true confocal scanning reduces photobleaching and increases the fluorescence yield at identical acquisition times. View 1121 39 report mini quantum resonance magnetic analyzer 140720 where do download skin analyzer software 140714 quantum analyzer upgrade in different language. I am trying to understand the surface plasmon resonance of silver nanoprisms. Nuclear quadrupole resonance nqr scanner for explosives detection. Bioresonance scanning and therapy may be the answer we offer a health checkup and report. Multiband superconductivity in filledskutterudite compounds.
What are inplane outofplane dipole quadrupole plasmon resonance. The feasibility of quadrupole dip imaging with pmri. Taylor department of electrical and electronic engineering, university of liverpool, brownlow hill. If you want to listen to some designated broadcasting, you can transfer the radio to the corresponding frequency, at this moment, resonance occurs, so that you can listen to this broadcasting. The shoe scanner is a fairly advanced device that a person steps into. This detector targets to cyclotrimethylenetrinitramine rdx, a high explosive inside an antipersonnel landmine, which are buried up to 15 cm deep. A nuclear quadrupole resonance nqr detector has been developed.
The first 45 minute appointment involves doing a scan of the brain and central nervous system, that provides a comprehensive illustrated report on the energy level health state of every major body organ. Field of the invention 0002 the present invention relates generally to an inspection system, and in particular to a baggage inspection system for detecting explosives using computed tomography ct and quadrupole resonance qr sensors. This invention relates generally to a bulk substance detection systems for detecting concealed explosives and narcotics employing either nuclear quadrupole resonance or nuclear magnetic resonance, and more particularly to a practical system and method for qdamping the detection receiver of a contraband detection system thereby improving operational. The rf subsystem may include a variable frequency rf source to provide rf excitation signals at a frequency generally corresponding to predetermined, characteristic qr frequencies of a specimen. Nuclear quadrupole resonance is one of the family of magnetic resonance spectroscopies, the most notable members being nuclear magnetic resonance nmr and magnetic resonance imaging mri. Mass discrimination on a quadrupole from watson rfonly quadrupoles operated with u 0, quadrupole becomes a broad filter such rfonly quads are an important tool for transferring ions between regions of mass spectrometers. Quadrupole mass filter the mass spectrometer is essentially an instrument which can be used to measure the mass, or more correctly the masscharge ratio, of ionized atoms or other electrically charged particles.
The mass measurement accuracy of triple quadrupole analyzers is at. Odin odin is a free software framework for rapid prototyping of magnetic resonance imaging mri sequence. Automated, multisensor, passenger screening system. A first supplementary ac signal applied to the y electrodes is scanned through ion secular frequencies in order to massselectively excite precursor ions while, simultaneously, a second fixedfrequency ac signal is applied. A lowpower compact nuclear quadrupole resonance nqr based explosive detection system xinwang zhang, ph. Nuclear quadrupole resonance for explosive detection hideo itozaki and go ota graduate school of engineering science, osaka university machikaneyama toyonaka, osaka, 5608531, japan abstract abstract a nuclear quadrupole resonance detector has been developed. As the name implies, it consists of four cylindrical rods, set parallel to each other. Explosives detection system using computed tomography ct. Quantum resonance magnetic analyzerinstructions the air. The compact size is achieved using a patented array design of miniature quadrupole mass filters.
Researchers lay foundation for smart contrast medium. Quadrupole resonance scanner for narcotics detection quadrupole resonance scanner for narcotics detection shaw, julian d. Quadrupole mass spectrometers are intrinsically lowresolvingpower instruments but are relatively cheap and robust. The quadrupole ion trap is widely used in the chemical physics community for making measurements on dynamical systems, both intramolecular e. Application of nuclear quadrupole resonance to detection of.
As part of our continuing research and development programs in detection of narcotics and explosives using sensitive magnetic measuring devices, we present the first commercially available prototype quadrupole resonance qr scanner for narcotics detection. Quadrupole resonance article about quadrupole resonance by. Spanish quantum resonance magnetic analyzer software 3. Nuclear quadrupole resonance spectroscopy or nqr is a chemical analysis technique related to nuclear magnetic resonance. A novel shoe scanner using an openaccess quadrupole. Illustrated in figure 1 is a nikon a1r laser confocal microscope scanning unit equipped with a number of advanced features, including a highresolution galvanometerbased scanner 4,096 x 4,096 pixels. The quadrupole mass analyzer acts as a mass filter, allowing one mass channel at a time to reach the detector as the mass range is scanned. A selective absorption phenomenon observable in a wide variety of polycrystalline compounds containing nonspherical atomic nuclei when placed in a magnetic radiofrequency field. Atsc claimed that the device could, from long range, effectively and accurately detect various types of explosives, drugs, ivory, and other substances.
Unlike nmr, nqr transitions of nuclei can be detected in the absence of a magnetic field, and for this reason nqr spectroscopy is referred to as zero field nmr. Nuclear quadrupole resonance nqr is a radio frequency rf spectroscopy technique for solid materials the instrumentation is like nmr but nqr doesnt require an applied b 0 field because the physical mechanism is different there are benefits and drawbacks to nqr as compared with nmr. New scanner can detect explosives in shoes security info. Xm produces nestt explosive simulants for testing and training in k9, xray, quadrupole resonance, gamma ray and trace explosive detection systems.
These issues necessitate the development of prompt and accurate explosive detection systems. The quadrupole mass analyzer qms is one type of mass analyzer used in mass spectrometry. A quadrupole mass analyzer consists of a set of four conducting rods arranged in parallel, with a space in the middle. Modular design, easy access, commercially deployed. Quadrupole resonance scanner for narcotics detection as part of our continuing research and development programs in detection of narcotics and explosives using sensitive magnetic measuring devices, we present the first commercially available prototype quadrupole resonance qr scanner for narcotics detection.