Paramagnetic tracer concentration evolution by NMR relaxation time mapping: application to Aris-Taylor dispersion.
A procedure to study tracer dispersion was proposed and tested for the case of tracer spreading in tube flow. Concentration maps of paramagnetic tracers Gd3+ were measured in time through direct measurements of spin lattice relaxation time T1 obtained by using a two-point stimulated echo pulse sequence. The procedure was used to test the linear dependence of Peclet number on inverse velocity in the range of flow rates 0.3-1.2 cc/min.
Kutsovsky
Y E
YE
Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis 55455, USA.
Alvarado
V
V
Scriven
L E
LE
Davis
H T
HT
Hammer
B E
BE
D003287:Contrast Media / Q000737:chemistry*; D005682:Gadolinium / Q000737:chemistry*; D007089:Image Enhancement; D009682:Magnetic Resonance Spectroscopy; D008433:Mathematics; D011673:Pulsatile Flow
D003287:Contrast Media; D005682:Gadolinium