- BS, Calvin College, Physics and Mathematics, 1977
- PhD, University of Colorado Boulder, Physics, 1983
- Professor, Calvin College, 1991–present
- Academic dean, Calvin College, 2010–2017
- Visiting scholar, University of Rochester (Rochester, NY), 1992–93
- Associate professor, Calvin College, 1985–91
- Visitor, JILA (Boulder, CO), 1986
- Assistant professor, Calvin College, 1983–85
- Consultant, JILA (Boulder, CO), 1984
- Research associate, JILA, 1983, and assistant professor, University of Colorado at Denver, 1983
Theoretical atomic physics, especially as relating to the interaction of atoms with high-intensity lasers; science education
Note: an asterisk by a name indicates an undergraduate assistant.
S.L. Haan, N.A. Danks,* and K.N. Shomsky,* "Sequential ionization and energy gain of bound electrons in classical modeling of atoms in strong laser fields," Phys. Rev. A 86, 033418 (2012). http://link.aps.org/doi/10.1103/PhysRevA.86.033418 DOI: 10.1103/PhysRevA.86.033418
S.L. Haan, Z.S. Smith,* K.N. Shomsky,* P.W. Plantinga,* and T.L. Atallah,* "Anticorrelated Electrons from High-Intensity Nonsequential Double Ionization of Atoms," Phys. Rev. A 81, 023409 (2010).
K.N. Shomsky,* Z.S. Smith,* and S.L. Haan, "Frustrated Ionization in Non-Sequential Double Ionization: A Classical Model," Phys. Rev. A 79, 061402(R) (2009).
S.L. Haan, Z.S. Smith,* K.N. Shomsky,* and P.W. Plantinga,* "Electron Drift Directions in Strong-Field Double Ionization of Atoms," J. Phys. B 42, 134009 (2009).
S.L. Haan, Z.S. Smith,* K.N. Shomsky,* and P.W. Plantinga,* "Anticorrelated Electrons from Weak Recollisions in Non-Sequential Double Ionization," J. Phys. B: At. Mol. Opt. Phys. 41 (2008) 211002. This paper was selected for inclusion in IOP Select (November 2008), and was highlighted in Europhysics News 40, Number 1, page 15, (2009).
S.L. Haan, Z.S. Smith,* and J.S. VanDyke,* "Recollision Excitation, Electron Correlation, and the Production of High-Momentum Electrons in Double Ionization," Phys. Rev. Lett. 101, 113001 (2008).
S.L. Haan and Z.S. Smith,* "Classical explanation for electrons above the 2Up cutoff in strong-field double ionization at 390 nm," Phys. Rev. A. 76, 053412 (November 2007).
In 2010 Professor Haan was named a Fellow in the American Physical Society. This is a distinguished honor from his professional peers, recognizing his outstanding contributions to physics research and education. Professor Haan was honored for his cutting edge research in atomic physics. His research spanned nearly three decades, including 54 research papers and a continuous string of grants from the National Science Foundation, dating back to 1987. The APS Division of Atomic, Molecular, and Optical Physics honored Haan "for contributions to the theory of photodetachment, photoionization, and photorecombination processes, including quantum and classical models for double ionization of atoms." Former professors Vernon Ehlers, John Van Zytveld and David Van Baak have also received this honor.
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