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Rudakov, T.N.; Mikhaltsevich, Vassili; Fedotov, Vladimir V.; Belyakov, A. V.

doi:10.1023/a:1004137101733

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…The description of methods of detecting 14 N NQR signals with the use of a transceiving flat spiral coil can be found in [4][5][6][7][8][9]. In [7] windings of different types were analyzed and it was pointed out that the optimal winding for the spiral coil of a given diameter obeys the law…”

Section: Introductionmentioning

confidence: 99%

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A Two-Spiral Flat Coil for Detecting 14N NQR Signals

et al. 2005

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621.396.67In the present article, the design of a two-spiral flat coil intended for detecting NQR signals is described. Results of calculations of its magnetic fields and field non-uniformities are presented for windings of different types. It is demonstrated that the two-spiral coil field is localized in the near-field zone and has more uniform structure than the field of the conventional spiral coil with the same radius and winding type. It is emphasized that the two-spiral coil has higher sensitivity than the analogous conventional flat coil. Results of experiments on detecting the 14 N NQR signal of urotropine C 6 H 1 N 4 with this coil are presented.

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Section: Introductionmentioning

confidence: 99%

“…In [7] windings of different types were analyzed and it was pointed out that the optimal winding for the spiral coil of a given diameter obeys the law…”

Section: Introductionmentioning

confidence: 99%

A Two-Spiral Flat Coil for Detecting 14N NQR Signals

et al. 2005

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Simulation of nuclear quadrupole resonance for sensor probe optimization

Shinohara

Sato-Akaba

Itozaki

2012

Solid State Nuclear Magnetic Resonance

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Optimizing surface coils and the self-shielded gradiometer

Suits

Garroway

2003

Journal of Applied Physics

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A computational method for optimizing both single- and two-layer surface coils is presented that is relatively easy to implement in practice using either a variational approach or through standard numerical matrix diagonalization techniques. The technique is applied, in particular, to develop a self-shielded gradiometer that is relatively immune to radiofrequency (rf) interference from distant sources with a minimal compromise to its ability to sense rf from nearby sources, properties necessary for nuclear quadrupole resonance detection of buried land mines. Results of the optimization procedure are evaluated using finite-element numerical techniques and measurements on prototype coils for a number of configurations. These results show that practical coils can be constructed that approximate the theoretically optimized coils quite well. In addition, the trade off between the surface coil sensitivity and noise immunity is presented for the self-shielded gradiometer configuration.

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Cited by 3 publications

References 2 publications

A Two-Spiral Flat Coil for Detecting 14N NQR Signals

A Two-Spiral Flat Coil for Detecting 14N NQR Signals

Simulation of nuclear quadrupole resonance for sensor probe optimization

Optimizing surface coils and the self-shielded gradiometer

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