X-ray absorption spectroscopy of iron tris(bipyridine) using superconducting microcalorimeters

J. N. Ullom; M. Dowell; J. Fowler; L. Miaja; G. O’Neil; K. Silverman; D. Swetz; D. M. Sagar; Z. Yoon; R. Jimenez; J. Uhlig; W. Fullagar; D. Kurunthu; U. Mandal; V. Sundstrom

doi:10.1364/CLEO_AT.2014.AW1P.3

CLEO: 2014
OSA Technical Digest (online) (Optica Publishing Group, 2014),
paper AW1P.3
•https://doi.org/10.1364/CLEO_AT.2014.AW1P.3

X-ray absorption spectroscopy of iron tris(bipyridine) using superconducting microcalorimeters

J. N. Ullom, M. Dowell, J. Fowler, L. Miaja, G. O’Neil, K. Silverman, D. Swetz, D. M. Sagar, Z. Yoon, R. Jimenez, J. Uhlig, W. Fullagar, D. Kurunthu, U. Mandal, and V. Sundstrom

CLEO: Applications and Technology 2014

San Jose, California United States
8–13 June 2014
ISBN: 978-1-55752-999-2

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Spectroscopy and Imaging Applications (AW1P)

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J. N. Ullom, M. Dowell, J. Fowler, L. Miaja, G. O’Neil, K. Silverman, D. Swetz, D. M. Sagar, Z. Yoon, R. Jimenez, J. Uhlig, W. Fullagar, D. Kurunthu, U. Mandal, and V. Sundstrom, "X-ray absorption spectroscopy of iron tris(bipyridine) using superconducting microcalorimeters," in CLEO: 2014, OSA Technical Digest (online) (Optica Publishing Group, 2014), paper AW1P.3.

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Abstract

We are developing a tabletop apparatus for time-resolved x-ray absorption spectroscopy. Short x-ray pulses are generated by focusing a pulsed 800 nm laser onto a water jet target. X-rays that pass through a sample of interest are detected using energy-resolving superconducting microcalorimeter detectors. We have successfully observed EXAFS features from iron tris(bipyridine) in a water solution. We discuss details of the microcalorimeter spectra and describe the steps that remain before the intrinsic sub-picosecond sensitivity of the apparatus can be realized.

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