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Department of Physics

Daniel Rolles

Daniel RollesAssistant Professor
327 Cardwell Hall
(785) 532-1615
Group Webpage

Ph.D. (Dr. rer. nat.) Technische Universität Berlin, 2005
M.Sc. (Diplom) Technische Universität Berlin, 2001

Research Area

Experimental Atomic, Molecular & Optical Physics; Ultrafast X-Ray Science

Taking a movie of a chemical reaction with atomic resolution? Watching the making and breaking of chemical bonds in real time? Using experimental techniques such as femtosecond time-resolved photoelectron spectroscopy and diffraction, time-resolved ion momentum imaging, and electron-ion coincidence spectroscopy, my research focuses on visualizing nuclear and electronic dynamics during photoionization and other photochemical reactions in gas-phase molecules by means of femtosecond pump-probe experiments. Our experiments combine lab-based studies using intense few-cycle optical lasers and their high-order harmonics in the XUV domain with intense and short-pulse VUV and X-ray radiation from Free-Electron Lasers, e.g. the Linac Coherent Light Source (LCLS) at Stanford, FLASH in Hamburg, Germany, and SACLA in Japan. This is complemented by electron-ion coincidence experiments and spectroscopy with 3rd generation synchrotron sources such as the Advanced Light Source (ALS) in Berkeley and PETRA III in Hamburg, Germany.

Research Support

  • Department of Energy

Recent Selected Publications

A. Picon, C. S. Lehmann, C. Bostedt, A. Rudenko, A. Marinelli, T. Osipov, D.Rolles, N. Berrah, C. Bomme, M. Bucher, G. Doumy, B. Erk, K. Ferguson, T. Gorkhover, P. J. Ho, E. P. Kanter, B. Krässig, J. Krzywinski, A. A. Lutman, A. M. March, D. Ray, L. Young, S. T. Pratt, D. Moonshiram, and S. H. Southworth (2016). Hetero-site-specific ultrafast intramolecular dynamicsNature Communications, 7, 11652.

T. Gorkhover, S. Schorb, R. Coffee, M. Adolph, L. Foucar, D. Rupp, A. Aquila, J. D. Bozek, S. W. Epp, B. Erk, L. Gumprecht, L. Holmegaard, A. Hartmann, R. Hartmann, G. Hauser, P. Holl, A. Hömke, N. Kimmel, K.-U. Kühnel, P. Johnsson, M. Messerschmidt, C. Reich, A. Rouzée, B. Rudek, C. Schmidt, J. Schulz, H. Soltau, S. Stern, G. Weidenspointner, B. White, J. Küpper, L. Strüder, I. Schlichting, J. Ullrich, D. Rolles, A. Rudenko, T. Möller, and C. Bostedt (2016). Femtosecond and nanometer visualization of structural dynamics in superheated nanoparticles. Nature Photonics, 10, 93-97.

R. Boll, B. Erk, R. Coffee, S. Trippel, T. Kierspel, C. Bomme, J.D. Bozek, M. Burkett, S. Carron, K. R. Ferguson, L. Foucar, J. Küpper, T. Marchenko, C. Miron, M. Patanen, T. Osipov, S. Schorb, M. Simon, M. Swiggers, S.Techert, K. Ueda, C. Bostedt, D. Rolles, and A. Rudenko (2016). Charge transfer in dissociating iodomethane and fluoromethane molecules ionized by intense femtosecond X-ray pulses. Structural Dynamics, 3, 043207.

R.M.P. Tanyag, C. Bernando, C.F. Jones, C. Bacellar, K.R. Ferguson, D. Anielski, R. Boll, S. Carron, J.P. Cryan, L. Englert, S. W. Epp, B. Erk, L. Foucar, L.F. Gomez, R. Hartmann, D.M. Neumark, D. Rolles, B. Rudek, A. Rudenko, K.R. Siefermann, J. Ullrich, F. Weise, C. Bostedt, O. Gessner, A.F. Vilesov (2015). X-ray coherent diffractive imaging by immersion in nanodropletsStructural Dynamics, 2, 051102.

C. E. Liekhus-Schmaltz, I. Tenney, T. Osipov, A. Sanchez-Gonzalez, N. Berrah, R. Boll, C. Bomme, C. Bostedt, J.D. Bozek, S. Carron, R. Coffee, J. Devin, B. Erk, K.R. Ferguson, R.W. Field, L. Foucar, L.J. Frasinski, J.M. Glownia, M. Gühr, A. Kamalov, J. Krzywinski, H. Li, J.P. Marangos, T.J. Martinez, B.K. McFarland, S. Miyabe, B. Murphy, A. Natan, D. Rolles, A. Rudenko, M. Siano, E.R. Simpson, L. Spector, M. Swiggers, D. Walke, S. Wang, T. Weber, P.H. Bucksbaum, V.S. Petrovic (2015). Ultrafast isomerization initiated by x-ray core ionization. Nature Communication6, 8199.

A. Rudenko and D. Rolles (2015). Time-resolved studies with FELsJournal of Electron Spectroscopy and Related Phenomena, 204, 228-236.