Combination of proton-nitrogen level crossing polarization transfer and pulsed spin-locking sequence makes nuclear quadrupole resonance (NQR) in trinitrotoluene fast and sensitive enough to be used in routine detection of explosives. Enhancement factors for all three NQR lines (the case with ) were calculated and compared with experimental values. Good agreement between measured and calculated signal enhancement factors was observed. NQR signals in a trinitrotoluene sample of predominantly monoclinic modification were measured in in different polarization magnetic fields. The conditions for optimal proton-nitrogen level crossing were determined.
REFERENCES
1.
V. S.
Grechishkin
and N. J.
Sinjavsky
, Phys. Usp.
40
, 393
(1997
).2.
J. P.
Yesinowski
, M. L.
Buess
, and A. N.
Garroway
, Anal. Chem.
67
, 2256
(1995
).3.
V. S.
Grechishkin
, Appl. Phys. A: Solids Surf.
55
, 505
(1992
).4.
A. N.
Garroway
, M. L.
Buess
, J. B.
Miller
, B. H.
Suits
, A. D.
Hibbs
, G. A.
Barrall
, R.
Matthews
, and L. J.
Burnett
, IEEE Trans. Geosci. Remote Sens.
GE-39
, 1108
(2001
).5.
J. A. S.
Smith
, R. M.
Deas
, and M. J.
Gaskell
, International Conference on Requirements and Technologies for the Detection, Removal and Neutralization of Landmines and UXO
, edited by H.
Shali
, A. M.
Bottoms
, and J.
Cornelis
, 15–18 September 2003
(Vrije Universiteit Brussels
, Brussels, Belgium
, 2003
), Vol. 2
, p. 715
.6.
J. A. S.
Smith
, Chem. Soc. Rev.
15
, 225
(1986
).7.
E.
Balchin
, D. J.
Malcolme-Lawes
, I. J. F.
Poplett
, M. D.
Rowe
, J. A. S.
Smith
, D. E. S.
Pearce
, and S. A. C.
Wren
, Anal. Chem.
77
, 3925
(2005
).8.
R.
Blinc
, J.
Seliger
, A.
Zidansek
, V.
Zagar
, F.
Milia
, and H.
Robert
, Solid State Nucl. Magn. Reson.
30
, 61
(2006
).9.
J.
Seliger
, R.
Blinc
, M.
Mali
, R.
Osredkar
, and A.
Prelesnik
, Phys. Rev. B
11
, 27
(1975
).10.
R. E.
Slusher
and E. L.
Hahn
, Phys. Rev.
166
, 332
(1968
).11.
R.
Blinc
, J.
Seliger
, D.
Arcon
, P.
Cevc
, and V.
Zagar
, Phys. Status Solidi A
180
, 541
(2000
).12.
M.
Nolte
, A.
Privalov
, J.
Altmann
, V.
Anferov
, and F.
Fujara
, J. Phys. D
35
, 939
(2002
).13.
J.
Seliger
, V.
Žagar
, and R.
Blinc
, J. Magn. Reson., Ser. A
106
, 214
(1994
).14.
D.
Kruk
, J.
Altmann
, F.
Fujara
, A.
Gaedke
, M.
Nolte
, and A. F.
Privalov
, J. Phys.: Condens. Matter
17
, 519
(2005
).15.
K. R.
Thurber
, K. L.
Sauer
, M. L.
Buess
, C. A.
Klug
, and J. B.
Miller
, J. Magn. Reson.
177
, 118
(2005
).16.
J.
Luznik
, J.
Pirnat
, and Z.
Trontelj
, Solid State Commun.
121
, 653
(2002
).17.
R.
Blinc
, T.
Apih
, and J.
Seliger
, Appl. Magn. Reson.
25
, 523
(2004
).18.
V. S.
Grechishkin
, V. P.
Anferov
, and N. J.
Sinjavsky
, Adv. Nucl. Quadrupole Reson.
5
, 13
(1983
).19.
T.
Mikhaltsevitch
and A. V.
Beliakov
, Solid State Commun.
138
, 409
(2006
).20.
21.
M.
Goldman
, Spin Temperature and Nuclear Magnetic Resonance in Solids
(Oxford University Press
, Oxford
, 1970
).22.
D. T.
Edmonds
, Phys. Rep., Phys. Lett.
29
, 233
(1977
).23.
T. P.
Das
and E. L.
Hahn
, Nuclear Quadrupole Resonance Spectroscopy
(Academic
, New York
, 1958
).24.
R. A.
Marino
and R. F.
Connors
, J. Mol. Struct.
111
, 323
(1983
).25.
R. M.
Deas
, M. J.
Gaskell
, K.
Long
, N. F.
Pierson
, M. D.
Rowe
, and J. A. S.
Smith
, Proc. SPIE
5415
, 510
(2004
).26.
A.
Naito
, A.
Root
, and C. A.
McDowell
, J. Phys. Chem.
95
, 3578
(1991
).27.
J.
Luznik
, J.
Pirnat
, V.
Jazbinsek
, T.
Apih
, A.
Gregorovic
, R.
Blinc
, J.
Seliger
, and Z.
Trontelj
, Appl. Phys. Lett.
89
, 123509
(2006
).© 2007 American Institute of Physics.
2007
American Institute of Physics
You do not currently have access to this content.
