title: Paramagnetic tracer concentration evolution by NMR relaxation time mapping: application to Aris-Taylor dispersion.
abstract: 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.
authors.affiliation: Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis 55455, USA.
authors.forename: Y E
authors.initials: YE
authors.lastname: Kutsovsky
authors.forename: V
authors.initials: V
authors.lastname: Alvarado
authors.forename: L E
authors.initials: LE
authors.lastname: Scriven
authors.forename: H T
authors.initials: HT
authors.lastname: Davis
authors.forename: B E
authors.initials: BE
authors.lastname: Hammer
mesh_terms: D003287:Contrast Media / Q000737:chemistry*; D005682:Gadolinium / Q000737:chemistry*; D007089:Image Enhancement; D009682:Magnetic Resonance Spectroscopy; D008433:Mathematics; D011673:Pulsatile Flow
chemical_list: D003287:Contrast Media; D005682:Gadolinium