Science, Space and Technology News 2024
Scientists used SLAC’s Linac Coherent Light Source to uncover new information about the photoelectric effect, a phenomenon first described by Einstein over a century ago. Their method provides a new tool to study electron-electron interactions, which are fundamental to many technologies, including semiconductors and solar cells. Credit: Greg Stewart/SLAC National Accelerator Laboratory, edited
They’ve developed a technique using attosecond X-ray pulses to measure electron-emission delays, revealing discrepancies in existing theories by showing larger-than-expected delays. Their method provides a new tool to study electron-electron interactions, which are fundamental to many technologies, includinghas uncovered new information about the photoelectric effect, a phenomenon first described by Einstein over a century ago.
The photoemission delay can be thought of as the time between a molecule absorbing a photon and emitting an electron. These delays, reaching up to 700 attoseconds, were significantly larger than previously predicted, challenging existing theoretical models and opening new avenues for understanding electron behavior. The researchers also discovered that interactions between electrons played an important role in this delay.
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