TY - JOUR
T1 - Development of Earth’s Field Nuclear Magnetic Resonance (EFNMR) Technique for Applications in Security Scanning Devices
AU - Balcı, Erdem
AU - Rameev, Bulat
AU - Acar, Hakkı
AU - Mozzhukhin, Georgy V.
AU - Aktaş, Bekir
AU - Çolak, Bektaş
AU - Kupriyanov, Pavel A.
AU - Ievlev, Alexander V.
AU - Chernyshev, Yury S.
AU - Chizhik, Vladimir I.
N1 - Publisher Copyright:
© 2015, Springer-Verlag Wien.
PY - 2016/1/1
Y1 - 2016/1/1
N2 - In this work Earth’s field nuclear magnetic resonance (EFNMR) technique for applications in security scanning devices has been presented. The EFNMR setup has been build based on Magritek low-frequency (0–1 MHz) KEA-2 NMR console. Excepting the NMR console, all components are home-made units, which are a first-order gradiometer RF probe, pre-polarization system, magnetic field shimming system, RF shielding box and passive filters. Our measurements have shown that even in very noisy lab conditions the EFNMR signals of small amounts (~5 ml) of liquid samples could be measured. EFNMR measurements of various liquids have been performed and their spin–lattice T1 and spin–spin T2 relaxation constants have been obtained. A possibility to detect, at the same time, both fluorine and proton resonance has been shown by EFNMR measurements of trifluoroacetic acid. A good spectral resolution of EFNMR setup has been demonstrated by the spectroscopic measurements of heteronuclear J-coupling of trimethyl phosphate and fluorobenzene. Furthermore, we have shown that the EFNMR measurements of T1 and T2 constants as well as heteronuclear J-coupling of liquids enclosed in metallic containers are feasible. Possible applications of the EFNMR technique in security scanners for the detection of illicit and energetic substances are discussed.
AB - In this work Earth’s field nuclear magnetic resonance (EFNMR) technique for applications in security scanning devices has been presented. The EFNMR setup has been build based on Magritek low-frequency (0–1 MHz) KEA-2 NMR console. Excepting the NMR console, all components are home-made units, which are a first-order gradiometer RF probe, pre-polarization system, magnetic field shimming system, RF shielding box and passive filters. Our measurements have shown that even in very noisy lab conditions the EFNMR signals of small amounts (~5 ml) of liquid samples could be measured. EFNMR measurements of various liquids have been performed and their spin–lattice T1 and spin–spin T2 relaxation constants have been obtained. A possibility to detect, at the same time, both fluorine and proton resonance has been shown by EFNMR measurements of trifluoroacetic acid. A good spectral resolution of EFNMR setup has been demonstrated by the spectroscopic measurements of heteronuclear J-coupling of trimethyl phosphate and fluorobenzene. Furthermore, we have shown that the EFNMR measurements of T1 and T2 constants as well as heteronuclear J-coupling of liquids enclosed in metallic containers are feasible. Possible applications of the EFNMR technique in security scanners for the detection of illicit and energetic substances are discussed.
UR - http://www.scopus.com/inward/record.url?scp=84953355450&partnerID=8YFLogxK
U2 - 10.1007/s00723-015-0730-z
DO - 10.1007/s00723-015-0730-z
M3 - Article
AN - SCOPUS:84953355450
SN - 0937-9347
VL - 47
SP - 87
EP - 99
JO - Applied Magnetic Resonance
JF - Applied Magnetic Resonance
IS - 1
ER -