TR32-Database: Database of Transregio 32

[638] - Relaxation in a natural soil: comparison of relaxometric imaging, T1 – T2 correlation and fast-field cycling NMR

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Features
Citation
Haber-Pohlmeier, S., Stapf, S., van Dusschoten, D., Pohlmeier, A., 2010. Relaxation in a natural soil: comparison of relaxometric imaging, T1 – T2 correlation and fast-field cycling NMR. The Open Magnetic Resonance Journal, 3, 56 - 62. DOI: 10.2174/1874769801003010057.
Identification
Title(s):Main Title: Relaxation in a natural soil: comparison of relaxometric imaging, T1 – T2 correlation and fast-field cycling NMR
Description(s):Abstract: Longitudinal and transverse relaxation times are used to characterise the pore system of a natural Kaldenkirchen sandy loam. Here we present new results obtained by relaxometric imaging (MEMS) and two-dimensional T1-T2 correlation relaxometry, and compare these with available T1- relaxation time distributions of water obtained by the analysis of fast field cycling relaxometry (FFC) data. The soil shows relatively broad bimodal distribution functions P(T1) and P(T2) with a T1/T2 ratio of about 2:1. The average T1 as well as the spatial distribution, which are obtained from the relaxometric imaging corresponds well to the relaxometric results. From the analysis of the field dependent FFC data at low field including T1 data obtained at high field the basic locally averaged relaxation mechanism is derived from the dispersion curve, i.e. the dependence of the relaxation rate from the magnetic field strength over five orders of magnitudes. From this we conclude that two-dimensional diffusion at locally flat surfaces controls the relaxation, i.e. the shapes of the distribution functions are controlled by surface relaxation.
Identifier(s):DOI: 10.2174/1874769801003010057
Responsible Party
Creator(s):Author: Sabina Haber-Pohlmeier
Author: Siegfried Stapf
Author: Dagmar van Dusschoten
Author: Andreas Pohlmeier
Publisher:Bentham Open
Topic
TR32 Topic:Other
Subject(s):CRC/TR32 Keywords: Soil, NMR, Relaxometric Imaging, Pore-Size Distribution, T1-T2 Correlation, Brownstein Tarr
File Details
File Name:2010_Haber-Pohlmeier_OMRJ.pdf
Data Type:Text
Size(s):6 Pages
File Size:170 kB (0.166 MB)
Date(s):Date Accepted: 2009-12-11
Mime Type:application/pdf
Data Format:PDF
Language:English
Status:Completed
Constraints
Download Permission:OnlyTR32
General Access and Use Conditions:For internal use only
Access Limitations:For internal use only
Licence:TR32DB Data policy agreement
Geographic
North:-no map data
East:-
South:-
West:-
Measurement Region:Other
Measurement Location:--Other--
Specific Informations - Publication
Status:Published
Review:PeerReview
Year:2010
Type:Article
Article Type:Journal
Source:The Open Magnetic Resonance Journal
Volume:3
Number Of Pages:6
Page Range:56 - 62
Metadata Details
Metadata Creator:Markus Küppers
Metadata Created:2013-12-02
Metadata Last Updated:2013-12-02
Subproject:A1
Funding Phase:1
Metadata Language:English
Metadata Version:V40
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Metadata Downloads:0
Dataset Downloads:0
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