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Attosecond-pump attosecond-probe x-ray spectroscopy of liquid water.

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Title: Attosecond-pump attosecond-probe x-ray spectroscopy of liquid water.
Authors: Shuai Li, Lixin Lu, Bhattacharyya, Swarnendu, Pearce, Carolyn, Kai Li, Nienhuis, Emily T., Doumy, Gilles, Schaller, R. D., Moeller, S., Lin, M.-F., Dakovski, G., Hoffman, D. J., Garratt, D., Larsen, Kirk A., Koralek, J. D., Hampton, C. Y., Cesar, D., Duris, Joseph, Zhang, Z., Sudar, Nicholas
Source: Science (pre-March 2025). 3/8/2024, Vol. 383 Issue 6687, p1118-1122. 5p. 4 Color Photographs.
Abstract: Attosecond-pump/attosecond-probe experiments have long been sought as the most straightforward method for observing electron dynamics in real time. Although there has been much success with overlapped near-infrared femtosecond and extreme ultraviolet attosecond pulses combined with theory, true attosecond-pump/attosecond-probe experiments have been limited. We used a synchronized attosecond x-ray pulse pair from an x-ray free-electron laser to study the electronic response to valence ionization in liquid water through all x-ray attosecond transient absorption spectroscopy (AX-ATAS). Our analysis showed that the AX-ATAS response is confined to the subfemtosecond timescale, eliminating any hydrogen atom motion and demonstrating experimentally that the 1b1 splitting in the x-ray emission spectrum is related to dynamics and is not evidence of two structural motifs in ambient liquid water. [ABSTRACT FROM AUTHOR]
Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Attosecond-pump attosecond-probe x-ray spectroscopy of liquid water.
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  Data: <searchLink fieldCode="AR" term="%22Shuai+Li%22">Shuai Li</searchLink><br /><searchLink fieldCode="AR" term="%22Lixin+Lu%22">Lixin Lu</searchLink><br /><searchLink fieldCode="AR" term="%22Bhattacharyya%2C+Swarnendu%22">Bhattacharyya, Swarnendu</searchLink><br /><searchLink fieldCode="AR" term="%22Pearce%2C+Carolyn%22">Pearce, Carolyn</searchLink><br /><searchLink fieldCode="AR" term="%22Kai+Li%22">Kai Li</searchLink><br /><searchLink fieldCode="AR" term="%22Nienhuis%2C+Emily+T%2E%22">Nienhuis, Emily T.</searchLink><br /><searchLink fieldCode="AR" term="%22Doumy%2C+Gilles%22">Doumy, Gilles</searchLink><br /><searchLink fieldCode="AR" term="%22Schaller%2C+R%2E+D%2E%22">Schaller, R. D.</searchLink><br /><searchLink fieldCode="AR" term="%22Moeller%2C+S%2E%22">Moeller, S.</searchLink><br /><searchLink fieldCode="AR" term="%22Lin%2C+M%2E-F%2E%22">Lin, M.-F.</searchLink><br /><searchLink fieldCode="AR" term="%22Dakovski%2C+G%2E%22">Dakovski, G.</searchLink><br /><searchLink fieldCode="AR" term="%22Hoffman%2C+D%2E+J%2E%22">Hoffman, D. J.</searchLink><br /><searchLink fieldCode="AR" term="%22Garratt%2C+D%2E%22">Garratt, D.</searchLink><br /><searchLink fieldCode="AR" term="%22Larsen%2C+Kirk+A%2E%22">Larsen, Kirk A.</searchLink><br /><searchLink fieldCode="AR" term="%22Koralek%2C+J%2E+D%2E%22">Koralek, J. D.</searchLink><br /><searchLink fieldCode="AR" term="%22Hampton%2C+C%2E+Y%2E%22">Hampton, C. Y.</searchLink><br /><searchLink fieldCode="AR" term="%22Cesar%2C+D%2E%22">Cesar, D.</searchLink><br /><searchLink fieldCode="AR" term="%22Duris%2C+Joseph%22">Duris, Joseph</searchLink><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Z%2E%22">Zhang, Z.</searchLink><br /><searchLink fieldCode="AR" term="%22Sudar%2C+Nicholas%22">Sudar, Nicholas</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Science+%28pre-March+2025%29%22">Science (pre-March 2025)</searchLink>. 3/8/2024, Vol. 383 Issue 6687, p1118-1122. 5p. 4 Color Photographs.
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  Data: Attosecond-pump/attosecond-probe experiments have long been sought as the most straightforward method for observing electron dynamics in real time. Although there has been much success with overlapped near-infrared femtosecond and extreme ultraviolet attosecond pulses combined with theory, true attosecond-pump/attosecond-probe experiments have been limited. We used a synchronized attosecond x-ray pulse pair from an x-ray free-electron laser to study the electronic response to valence ionization in liquid water through all x-ray attosecond transient absorption spectroscopy (AX-ATAS). Our analysis showed that the AX-ATAS response is confined to the subfemtosecond timescale, eliminating any hydrogen atom motion and demonstrating experimentally that the 1b1 splitting in the x-ray emission spectrum is related to dynamics and is not evidence of two structural motifs in ambient liquid water. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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              Text: 3/8/2024
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