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Ultrafast Time-Reso...
Ultrafast Time-Resolved X-ray Absorption Spectroscopy of Ferrioxalate Photolysis with a Laser Plasma X-ray Source and Microcalorimeter Array
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- O’Neil, Galen C. (author)
- National Institute of Standards and Technology (NIST)
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- Miaja Avila, Luis (author)
- National Institute of Standards and Technology (NIST)
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- Joe, Young Il (author)
- National Institute of Standards and Technology (NIST)
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- Alpert, Bradley K. (author)
- National Institute of Standards and Technology (NIST)
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- Balasubramanian, Mahalingam (author)
- Argonne National Laboratory
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- Sagar, D. M. (author)
- National Institute of Standards and Technology (NIST),University of Colorado
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- Doriese, William (author)
- National Institute of Standards and Technology (NIST)
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- Fowler, Joseph W. (author)
- National Institute of Standards and Technology (NIST)
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- Fullagar, Wilfred K. (author)
- Lund University,Lunds universitet,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH
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- Chen, Zhi Ning (author)
- Canadian Light Source
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- Hilton, Gene C. (author)
- National Institute of Standards and Technology (NIST)
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- Jimenez, Ralph (author)
- National Institute of Standards and Technology (NIST),University of Colorado
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- Ravel, Bruce (author)
- National Institute of Standards and Technology (NIST)
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- Reintsema, Carl D. (author)
- National Institute of Standards and Technology (NIST)
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- Schmidt, Dan R. (author)
- National Institute of Standards and Technology (NIST)
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- Silverman, Kevin L. (author)
- National Institute of Standards and Technology (NIST)
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- Swetz, Daniel S. (author)
- National Institute of Standards and Technology (NIST)
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- Uhlig, Jens (author)
- Lund University,Lunds universitet,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH
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- Ullom, Joel N. (author)
- University of Colorado,National Institute of Standards and Technology (NIST)
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(creator_code:org_t)
- 2017-02-22
- 2017
- English 6 s.
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In: The Journal of Physical Chemistry Letters. - : American Chemical Society (ACS). - 1948-7185. ; 8:5, s. 1099-1104
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http://dx.doi.org/10...
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Abstract
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- The detailed pathways of photoactivity on ultrafast time scales are a topic of contemporary interest. Using a tabletop apparatus based on a laser plasma X-ray source and an array of cryogenic microcalorimeter X-ray detectors, we measured a transient X-ray absorption spectrum during the ferrioxalate photoreduction reaction. With these high-efficiency detectors, we observe the Fe K edge move to lower energies and the amplitude of the extended X-ray absorption fine structure reduce, consistent with a photoreduction mechanism in which electron transfer precedes disassociation. These results are compared to previously published transient X-ray absorption measurements on the same reaction and found to be consistent with the results from Ogi et al. and inconsistent with the results of Chen et al. (Ogi, Y.; et al. Struct. Dyn. 2015, 2, 034901; Chen, J.; Zhang, H.; Tomov, I. V.; Ding, X.; Rentzepis, P. M. Chem. Phys. Lett. 2007, 437, 50-55). We provide quantitative limits on the Fe-O bond length change. Finally, we review potential improvements to our measurement technique, highlighting the future potential of tabletop X-ray science using microcalorimeter sensors.
Subject headings
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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O’Neil, Galen C.
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Miaja Avila, Lui ...
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Joe, Young Il
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Alpert, Bradley ...
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Balasubramanian, ...
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Sagar, D. M.
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show more...
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Doriese, William
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Fowler, Joseph W ...
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Fullagar, Wilfre ...
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Chen, Zhi Ning
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Hilton, Gene C.
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Jimenez, Ralph
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Ravel, Bruce
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Reintsema, Carl ...
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Schmidt, Dan R.
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Silverman, Kevin ...
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Swetz, Daniel S.
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Uhlig, Jens
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Ullom, Joel N.
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show less...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Physical Chemist ...
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The Journal of P ...
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Lund University