Public Lecture | Clocking Electrons: an Attosecond Stopwatch by Siqi Li
Find out more about SLAC Public Lectures here: stanford.io/3kWJZdN
Electrons in a molecule zip around the atom in times measured in billionths of a billionth of a second, or attoseconds. To learn the basic mechanisms of chemical reactions – how catalysts work, how batteries operate – we need to follow electrons over these very short times, and for that, we need a stopwatch that ticks in attoseconds. In this lecture, I will explain how we use SLAC's X-ray laser, the Linac Coherent Light Source (LCLS), to measure times in attoseconds. Part of the challenge is to verify that the stopwatch is accurate. This work provides tools to watch electrons move on their natural time scales.
About the Speaker:
Siqi Li is a staff scientist at SLAC in the group responsible for operating our X-ray free-electron laser, LCLS. After receiving her bachelor's degree at the University of Chicago, she came to SLAC and Stanford for graduate study, leading to her PhD in 2019. Her thesis on the production and measurement of attosecond X-ray beams won the 2020 award for the Outstanding Doctoral Thesis in Beam Physics given by the American Physical Society. After graduating, Li joined the SLAC staff, where she continues to improve the technology that enables ultrafast science.
Видео Public Lecture | Clocking Electrons: an Attosecond Stopwatch by Siqi Li канала SLAC National Accelerator Laboratory
Electrons in a molecule zip around the atom in times measured in billionths of a billionth of a second, or attoseconds. To learn the basic mechanisms of chemical reactions – how catalysts work, how batteries operate – we need to follow electrons over these very short times, and for that, we need a stopwatch that ticks in attoseconds. In this lecture, I will explain how we use SLAC's X-ray laser, the Linac Coherent Light Source (LCLS), to measure times in attoseconds. Part of the challenge is to verify that the stopwatch is accurate. This work provides tools to watch electrons move on their natural time scales.
About the Speaker:
Siqi Li is a staff scientist at SLAC in the group responsible for operating our X-ray free-electron laser, LCLS. After receiving her bachelor's degree at the University of Chicago, she came to SLAC and Stanford for graduate study, leading to her PhD in 2019. Her thesis on the production and measurement of attosecond X-ray beams won the 2020 award for the Outstanding Doctoral Thesis in Beam Physics given by the American Physical Society. After graduating, Li joined the SLAC staff, where she continues to improve the technology that enables ultrafast science.
Видео Public Lecture | Clocking Electrons: an Attosecond Stopwatch by Siqi Li канала SLAC National Accelerator Laboratory
Показать
Комментарии отсутствуют
Информация о видео
22 сентября 2023 г. 20:07:56
00:54:16
Другие видео канала
![SLAC IT | Nabil Bouali's Personal Meeting Room](https://i.ytimg.com/vi/pUfiAxDJXGU/default.jpg)
![Public Lecture: Faster! Catching up to Electrons on the Move](https://i.ytimg.com/vi/N_1cJqpctgg/default.jpg)
!["The Future of the Highest Energy Accelerators" by Frank Zimmerman (CERN)](https://i.ytimg.com/vi/Nkmla03Z7tU/default.jpg)
![Secretary Granholm Speech during SLAC's LCLS first light celebration](https://i.ytimg.com/vi/TmNLmLV6JTA/default.jpg)
![Stanford, SLAC X-ray Studies Could Make LIGO Gravitational Wave Detector 10x More Sensitive](https://i.ytimg.com/vi/xtgqxaFO-24/default.jpg)
![Can scientists visualize how plants use light to capture CO2?](https://i.ytimg.com/vi/oTF87G_qWC4/default.jpg)
![SLAC TID | PHASER Design](https://i.ytimg.com/vi/jgd2et9b5ag/default.jpg)
![How did SLAC ship the largest digital camera to Chile?](https://i.ytimg.com/vi/kfk86juvXhU/default.jpg)
![Public Lecture—Engineering Human Touch](https://i.ytimg.com/vi/Yv8fqhRJZb4/default.jpg)
![Science of SLAC | Molecular Bling: The Surprising Properties of Small Diamonds](https://i.ytimg.com/vi/mE34GynzHj8/default.jpg)
![A Look Inside SLAC's Battery Lab](https://i.ytimg.com/vi/pG_ybURgUD0/default.jpg)
![Public Lecture—Big Machines and Big Science: 80 Years of Accelerators at Stanford](https://i.ytimg.com/vi/HFWWIquyc-0/default.jpg)
![X-ray reveals 2,200 years old text by mathematics genius Archimedes](https://i.ytimg.com/vi/897D-ixxwEM/default.jpg)
![Public Lecture—LCLS: Ultrafast Science](https://i.ytimg.com/vi/a2UwrW3k6rk/default.jpg)
![Public Lecture—The Dark Side of the Universe](https://i.ytimg.com/vi/RJM4QPkGZYc/default.jpg)
![SLAC All Access: Fermi Gamma-ray Space Telescope](https://i.ytimg.com/vi/rKB43HFhVDA/default.jpg)
!["The High-Energy Universe" by Rene Ong (University of California-Los Angeles)](https://i.ytimg.com/vi/6lWigf7K6Wk/default.jpg)
![Twisted Light](https://i.ytimg.com/vi/QB5GkGNMdA8/default.jpg)
!["The Future of the Brightest X-ray Sources" by Zhirong Huang (SLAC National Accelerator Laboratory)](https://i.ytimg.com/vi/hpaCuieGVKE/default.jpg)
!["Single-Molecule Imaging" by Henry Chapman (DESY/University of Hamburg, Germany)](https://i.ytimg.com/vi/9sTIhIIaZ5k/default.jpg)
![Bay Area Research SLAM](https://i.ytimg.com/vi/QgZZjL70vMw/default.jpg)