Nuclear microprobe - synchrotron synergy: towards integrated quantitative real-time elemental imaging using PIXE and SCRF.

Journal Article · Sat Jan 01 04:00:00 EST 2005 · Nucl. Instrum. Methods Phys. Res. B

DOI:https://doi.org/10.1016/j.nimb.2005.01.054· OSTI ID:925289

Ryan, C G; Etschmann, B E; Vogt, S; Maser, J; Harland, C L; van Achterbergh, E; Legnini, D

The Dynamic Analysis (DA) method, for the projection of quantitative elemental images using Proton Induced X-ray Emission (PIXE), has been extended for use with energy-dispersive Synchrotron X-ray Fluorescence (SXRF) data collected with the X-ray microprobe by making use of similarities and synergy with nuclear microscopy. The broad element sensitivity of PIXE is complemented by the selective nature of SXRF, where the beam energy can be tuned to optimize the sensitivity in a portion of the periodic table. PIXE combined with Proton Induced {gamma}-ray Emission (PIGE) in this study provided images of geological samples of 25 elements, including characteristic X-rays up to the energy of the Nd K lines (37 keV). Maximum sensitivity was achieved for elements around Z {approx} 33 with detection limits of {approx}250 ppb (in 5 h). SXRF using a 16.1 keV photon microbeam provided images of 16 elements, with optimum sensitivity around Z {approx} 35 with detection limits of {approx}70 ppb (in 11 h), an improvement of {approx}2.4 times when corrected for acquisition time.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: SC; FOR
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 925289
• Report Number(s): ANL/XFD/JA-54625
• Journal Information: Nucl. Instrum. Methods Phys. Res. B, Journal Name: Nucl. Instrum. Methods Phys. Res. B Journal Issue: 2005 Vol. 231; ISSN 0168-583X; ISSN NIMBEU
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

43 PARTICLE ACCELERATORS
FLUORESCENCE
MICROSCOPY
PHOTONS
PROTONS
SENSITIVITY
SYNCHROTRONS