Institut für Optik und Atomare Physik
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117 Submissions in this community.

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Entwicklung eines neuartigen kryogenen 22-Pol Ionenfallenspektrometers (BerlinTrap) und spektroskopische Analyse von isolierten Flavinionenkomplexen

Günther, Alan (2017)

Diese Dissertation beschäftigt sich mit der spektroskopischen Untersuchung biologisch relevanter Flavinmoleküle in der Gasphase. Experimentelle Ergebnisse, unterstützt durch quantenchemische Rechnu...

Relativistic laser plasma dynamics with ultrathin foils

Bränzel, Julia (2017)

This thesis investigated the fundamental interaction processes of laser pulses of relativistic intensity interacting with dense plasmas, created from ultrathin foils. These processes include, ion a...

Development and analysis of all diode laser ns-MOPA systems for high peak power applications

Vu, Thi Nghiem (2017)

The aim of this work is to design and characterize all-diode laser based master oscillator power amplifier (MOPA) systems, which operate in the ns-pulse region with peak powers in the range of more...

Excitation and acceleration of atoms in tailored strong laser fields

Eilzer, Sebastian (2017)

This research investigates the new found effect of frustrated tunnelling ionisation (FTI) in complex electromagnetic field configurations. After the surprising finding of neutral atoms which survi...

Untersuchung der THz-Strahlcharakteristik an der Synchrotronstrahlquelle MLS

Pohl, Andreas (2017)

Synchrotrons haben sich in den letzten Jahren als bedeutende Strahlungsquelle für den THz-Bereich entwickelt. Strahlung mit größeren Wellenlängen als der longitudinalen Ausdehnung der Elektronenpak...

Dynamik von Nichtgleichgewichtsladungsträgern in n- und p-Germanium

Deßmann, Nils (2016)

In recent years, THz sources which deliver short pulses in the picosecond range with relatively high peak power have become more widespread. These short-pulse THz sources require fast broadband det...

Real-time tracking of atomic electron dynamics

Baggash, Mursal (2016)

In dieser Arbeit wird die zeitliche Entwicklung korrelierter Elektronendynamik in elektronischen Wellenpaketen im Ionisationskontinuum von Atomen dargestellt. Das Wellenpaket wird durch Absorption ...

Transmissions-Röntgenmikroskopie mit Laborquellen im harten Röntgenbereich

Baumbach, Stefan (2016)

The aim of this thesis is the development of a transmission x-ray microscope with laboratory sources in the hard x-ray region. This microscope differs from existing transmission hard x-ray microsco...

Weak interactions in ion-ligand complexes of C3H3+ isomers: competition between H-bound and C-bound structures in c-C3H3+center dot L and H2CCCH+center dot L (L = Ne, Ar, N-2, CO2, and O-2)

Botschwina, Peter; Oswald, Rainer; Dopfer, Otto (2011)

Explicitly correlated coupled cluster theory at the CCSD(T)-F12x level (T. B. Adler, G. Knizia, and H.-J. Werner, J. Chem. Phys.127, 221106, 2007) has been employed to study structures and vibratio...

Infrared spectra of the protonated neurotransmitter histamine: competition between imidazolium and ammonium isomers in the gas phase

Lagutschenkov, Anita; Langer, Judith; Berden, Giel; Oomens, Jos; Dopfer, Otto (2011)

The infrared (IR) spectrum of protonated histamine (histamineH+) was recorded in the 575–1900 cm−1 fingerprint range by means of IR multiple photon dissociation (IRMPD) spectroscopy. The IRMPD spec...

Structures and IR/UV spectra of neutral and ionic phenol-Ar-n cluster isomers (n <= 4): competition between hydrogen bonding and stacking

Schmies, Matthias; Patzer, Alexander; Fujii, Masaaki; Dopfer, Otto (2011)

The structures, binding energies, and vibrational and electronic spectra of various isomers of neutral and ionic phenol–Arnclusters with n ≤ 4, PhOH(+)–Arn, are characterized by quantum chemical ca...

Mass analyzed threshold ionization spectra of phenol⋯Ar2: ionization energy and cation intermolecular vibrational frequencies

Armentano, Antonio; Tong, Xin; Riese, Mikko; Pimblott, Simon M.; Müller-Dethlefs, K.; Fujii, Masaaki; Dopfer, Otto (2011)

The phenol+⋯Ar2 complex has been characterized in a supersonic jet by mass analyzed threshold ionization (MATI) spectroscopyvia different intermediate intermolecular vibrational states of the first...

Infrared spectra of protonated neurotransmitters: dopamine

Lagutschenkov, Anita; Langer, Judith; Berden, Giel; Oomens, Jos; Dopfer, Otto (2011)

The infrared (IR) spectrum of the isolated protonated neurotransmitter dopamine was recorded in the fingerprint range (570–1880 cm−1) by means of IR multiple photon dissociation (IRMPD) spectroscop...

Ionization-induced pi -> H site switching dynamics in phenol-Ar-3

Ishiuchi, Shun-ichi; Miyazaki, Mitsuhiko; Sakai, Makoto; Fujii, Masaaki; Schmies, Matthias; Dopfer, Otto (2011)

Electronic excitation spectra of the S1 ← S0 transition obtained by resonance-enhanced two-photon ionization (REMPI) are analysed for phenol–Arn (PhOH–Arn) clusters with n ≤ 4. An additivity rule h...

Photoionization-induced large-amplitude pendular motion in phenol(+)-Kr

Miyazaki, Mitsuhiko; Takeda, Akihiro; Ishiuchi, Shun-ichi; Sakai, Makoto; Dopfer, Otto; Fujii, Masaaki (2011)

The dynamics of the intermolecular motion of the phenol+–Kr cation generated by photoionization of the neutral π-structure is probed by picosecond time-resolved infrared spectroscopy. The spectrum ...

Infrared spectrum of the disilane cation (Si2H6+) from Ar-tagging spectroscopy

Savoca, Marco; George, Martin Andreas Robert; Langer, Judith; Dopfer, Otto (2013)

The infrared spectrum of the disilane cation, Si2H6+, in its 2A1g ground state is inferred from photodissociation of cold Si2H6+–Arn complexes (n = 1, 2). Vibrational analysis is consistent with a ...

Size-dependent Auger spectra and two-hole Coulomb interaction of small supported Cu-clusters

Peters, S.; Peredkov, S.; Neeb, M.; Eberhardt, W.; Al-Hada, M. (2013)

Auger (L3M4,5M4,5) and X-ray photoionization spectra (2p, 3d) of mass-selected CuN-clusters supported by a thin natural silica layer are presented in the size range N = 8–55 atoms per cluster. The ...

Ionization-induced pi -> H site-switching in phenol-CH4 complexes studied using IR dip spectroscopy

Miyazaki, Mitsuhiko; Takeda, Akihiro; Schmies, Matthias; Sakai, Makoto; Misawa, Kentaro; Ishiuchi, Shun-ichi; Michels, Francois; Müller-Dethlefs, Klaus; Dopfer, Otto; Fujii, Masaaki (2014)

IR spectra of phenol–CH4 complexes generated in a supersonic expansion were measured before and after photoionization. The IR spectrum before ionization shows the free OH stretching vibration (νOH)...

Size and shape dependent photoluminescence and excited state decay rates of diamondoids

Richter, Robert; Wolter, David; Zimmermann, Tobias; Landt, Lasse; Knecht, Andre; Heidrich, Christoph; Merli, Andrea; Dopfer, Otto; Reiss, Philipp; Ehresmann, Arno; Petersen, Jens; Dahl, Jeremy E.; Carlson, Robert M. K.; Bostedt, Christoph; Möller, Thomas; Mitric, Roland; Rander, Torbjörn (2014)

We present photoluminescence spectra and excited state decay rates of a series of diamondoids, which represent molecular structural analogues to hydrogen-passivated bulk diamond. Specific isomers o...

Weak hydrogen bonding motifs of ethylamino neurotransmitter radical cations in a hydrophobic environment: infrared spectra of tryptamine(+)-(N-2)(n) clusters (n <= 6)

Sakota, Kenji; Schütz, Markus; Schmies, Matthias; Moritz, Raphael; Bouchet, Aude; Ikeda, Takamasa; Kouno, Yuuki; Sekiya, Hiroshi; Dopfer, Otto (2014)

Size-selected clusters of the tryptamine cation with N2 ligands, TRA+–(N2)n with n = 1–6, are investigated by infrared photodissociation (IRPD) spectroscopy in the hydride stretch range and quantum...