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Sven H. Grundmann
Sven H. Grundmann | |
|---|---|
| File:Sven Grunndmann.jpg | |
| Alma mater | Goethe University Frankfurt (MSc, PhD) |
| Known for | Zeptosecond birth time delay in molecular photoionization Photoionization dynamics Electron interferometry |
| Scientific career | |
| Fields | Atomic physics Molecular physics Quantum physics |
| Institutions | Goethe University Frankfurt |
| Doctoral advisor | Reinhard Dörner |
Biography and Achievements
Sven H. Grundmann is a German physicist specializing in atomic, molecular, and quantum physics. He is affiliated with the Institut für Kernphysik at Goethe University Frankfurt, where he conducts research on ultrafast processes in atoms and molecules using advanced laser and synchrotron techniques.
Education and Early Career
Grundmann holds a Master of Science degree and earned his doctorate (Dr. rer. nat.) from Goethe University Frankfurt. His doctoral dissertation, supervised by Professor Reinhard Dörner, focused on ultrafast photoionization processes and formed the basis for groundbreaking work on zeptosecond timescales. This research was conducted as part of Dörner's team at the Institute for Nuclear Physics.
Career and Research
As a researcher at Goethe University Frankfurt's Institut für Kernphysik, Grundmann's work centers on experimental atomic physics, including the study of radiation pressure, photoionization delays, and electron dynamics in simple molecules like hydrogen and helium. He utilizes tools such as COLTRIMS (Cold Target Recoil Ion Momentum Spectroscopy) reaction microscopes to measure interference patterns in electron waves, enabling precise timing of quantum events.
His most notable contribution is the 2020 measurement of a 247-zeptosecond delay in photon traversal across a hydrogen molecule, setting a world record for the shortest timed event. This was achieved using X-ray flashes from the PETRA III synchrotron at DESY, in collaboration with a team including Daniel Trabert, Kilian Fehre, and others. The finding highlights the finite propagation speed of light interactions within molecules.
Grundmann has authored or co-authored over 64 publications, with a Google Scholar citation count of 592, h-index of approximately 15 (estimated from data), and ResearchGate citations exceeding 906. His ORCID is 0000-0001-6512-6921, and contact email is grundmann@atom.uni-frankfurt.de.
Key Publications
- Zeptosecond birth time delay in molecular photoionization (2020, *Science*, Vol. 370, pp. 339–341, with D. Trabert, K. Fehre, et al.). Citations: ~200+. This paper details the zeptosecond measurement via electron interferometry.
- Observation of Photoion Backward Emission in Photoionization of He and N₂ (2021, *Physical Review Letters*, with M. Kircher, I. Vela-Perez, et al.).
- Other works include studies on radiation pressure with recoil (2020) and quantum effects in atomic interactions.
Rewards and Recognition
While specific awards are not prominently listed in available sources, Grundmann's work has garnered international attention, including features in Science, Phys.org, and Science News. His doctoral research contributed to a major breakthrough in attosecond/zeptosecond physics, advancing fields like quantum chemistry and ultrafast spectroscopy.
Current Activities (Up to 2026)
As of 2026, Grundmann continues his research at Goethe University, focusing on molecular dynamics and photoionization. His work builds on collaborations with facilities like DESY and explores applications in probing nuclear and electron interactions.