[791] - Optimized slim-line logging NMR tool to measure soil moisture in situ

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Perlo, J., Danieli, E., Blümich, B., Casanova, F., 2013. Optimized slim-line logging NMR tool to measure soil moisture in situ. Journal of Magnetic Resonance, 233, 74 - 79. DOI: 10.1016/j.jmr.2013.05.004.
Title(s):Main Title: Optimized slim-line logging NMR tool to measure soil moisture in situ
Description(s):Abstract: We report the optimization of a slim-line logging NMR tool carried out by maximizing the signal-to-noise ratio of the NMR measurements. The tool, based on cylindrical permanent magnets of 20 cm length and 5 cm diameter, has a penetration depth of about 2 cm measured from its surface. This is obtained thanks to a large radio frequency coil whose dimensions are comparable to the sensor size. An analytical expression of the SNR as a function of parameters which take into account the interaction between the radio frequency coil and the magnet shielding is developed. In view of the external constrains such as the one imposed by the excavation hole, a proper tool size is determined in the optimization process. Due to its size and properties, the sensor is suitable to measure water content in the vadose zone, which is the zone comprised within the first meters of the Earth surface and whose study is important for improving water management in agriculture and for refining climate models.
Identifier(s):DOI: 10.1016/j.jmr.2013.05.004
Responsible Party
Creator(s):Author: Juan Perlo
Author: Ernesto Danieli
Author: Bernhard Blümich
Author: Federico Casanova
Publisher:Elsevier B.V
TR32 Topic:Soil
Subject(s):CRC/TR32 Keywords: NMR, Soil Moisture
File Details
File Name:2013_Perlo_JMR.pdf
Data Type:Text
Size(s):6 Pages
File Size:1179 kB (1.151 MB)
Date(s):Available: 2013-05-20
Mime Type:application/pdf
Data Format:PDF
Download Permission:OnlyTR32
General Access and Use Conditions:For internal use only
Access Limitations:For internal use only
Licence:TR32DB Data policy agreement
North:-no map data
Measurement Region:Laboratory
Measurement Location:--Laboratory--
Specific Informations - Publication
Article Type:Journal
Source:Journal of Magnetic Resonance
Number Of Pages:6
Page Range:74 - 79
Metadata Details
Metadata Creator:Markus Küppers
Metadata Created:2013-12-10
Metadata Last Updated:2013-12-10
Funding Phase:2
Metadata Language:English
Metadata Version:V40
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