TY  - JOUR
AU  - Anferova, S.
AU  - Anferov, V.
AU  - Arnold, J.
AU  - Talnishnikh, E.
AU  - Voda, M. A.
AU  - Kupferschläger, K.
AU  - Blümler, P.
AU  - Clauser, Ch.
AU  - Blümich, B.
TI  - Improved Halbach sensor for NMR scanning of drill cores
JO  - Magnetic resonance imaging
VL  - 25
SN  - 0730-725X
CY  - Amsterdam [u.a.]
PB  - Elsevier Science
M1  - PreJuSER-56634
SP  - 474 - 480
PY  - 2007
N1  - Record converted from VDB: 12.11.2012
AB  - A lightweight Halbach magnet system for use in nuclear magnetic resonance (NMR) studies on drill cores was designed and built. It features an improved homogeneous magnetic field with a strength of 0.22 T and a maximum accessible sensitive volume. Additionally, it is furnished with a sliding table for automatic scans of cylindrical samples. This device is optimized for nondestructive online measurements of porosity and pore size distributions of water-saturated full cylindrical and split semicylindrical drill cores of different diameters. The porosity of core plugs with diameters from 20 to 80 mm can be measured routinely using exchangeable radiofrequency coils. Advanced NMR techniques that provide 2D T(1)-T(2) correlations with an average measurement time of 30 min and permeability estimates can be performed with a special insert suitable for small core plugs with diameter and length of 20 mm.
KW  - Geologic Sediments: analysis
KW  - Magnetic Resonance Spectroscopy: instrumentation
KW  - Magnetic Resonance Spectroscopy: methods
KW  - Magnetics
KW  - Porosity
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
C6  - pmid:17466767
UR  - <Go to ISI:>//WOS:000246425100010
DO  - DOI:10.1016/j.mri.2006.11.016
UR  - https://juser.fz-juelich.de/record/56634
ER  -