title: Characterization of Darai Limestone Composition and Porosity Using Data-Constrained Modeling and Comparison with Xenon K-Edge Subtraction Imaging.
abstract: Data-constrained modeling is a method that enables three-dimensional distribution of mineral phases and porosity in a sample to be modeled based on micro-computed tomography scans acquired at different X-ray energies. Here we describe an alternative method for measuring porosity, synchrotron K-edge subtraction using xenon gas as a contrast agent. Results from both methods applied to the same Darai limestone sample are compared. Reasonable agreement between the two methods and with other porosity measurements is obtained. The possibility of a combination of data-constrained modeling and K-edge subtraction methods for more accurate sample characterization is discussed.
authors.affiliation: 1CSIRO Manufacturing Flagship,Private Bag 10,Clayton,VIC 3169,Australia.
authors.forename: Sheridan C
authors.initials: SC
authors.lastname: Mayo
authors.affiliation: 1CSIRO Manufacturing Flagship,Private Bag 10,Clayton,VIC 3169,Australia.
authors.forename: Sam Y S
authors.initials: SY
authors.lastname: Yang
authors.affiliation: 2CSIRO Energy Flagship,P.O. Box 1130,Bentley,WA 6102,Australia.
authors.forename: Marina
authors.initials: M
authors.lastname: Pervukhina
authors.affiliation: 2CSIRO Energy Flagship,P.O. Box 1130,Bentley,WA 6102,Australia.
authors.forename: Michael B
authors.initials: MB
authors.lastname: Clennell
authors.affiliation: 2CSIRO Energy Flagship,P.O. Box 1130,Bentley,WA 6102,Australia.
authors.forename: Lionel
authors.initials: L
authors.lastname: Esteban
authors.affiliation: 3Swiss Light Source,Paul Scherrer Institut,5232 Villigen PSI,Switzerland.
authors.forename: Sarah C
authors.initials: SC
authors.lastname: Irvine
authors.affiliation: 5Australian Synchrotron,800 Blackburn Rd,Clayton,VIC 3168,Australia.
authors.forename: Karen K
authors.initials: KK
authors.lastname: Siu
authors.affiliation: 5Australian Synchrotron,800 Blackburn Rd,Clayton,VIC 3168,Australia.
authors.forename: Anton S
authors.initials: AS
authors.lastname: Maksimenko
authors.affiliation: 1CSIRO Manufacturing Flagship,Private Bag 10,Clayton,VIC 3169,Australia.
authors.forename: Andrew M
authors.initials: AM
authors.lastname: Tulloh
keywords: K-edge subtraction; data-constrained modeling; micro-CT; porosity; synchrotron