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Showing 1 to 12 of 12 for “"REMPI"”.
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Investigation of Resonant Enhanced Multiphoton Ionization of Solid State High Explosives With Laser Ablation
… Resonance Enhanced Multiphoton Ionization (REMPI), the molecule of interest, in the gas phase, is resonantly excited and subsequently ionized from that state using a pulsed laser, leading to the formation of a plasma. A platinum probe electrode is used to measure the intensity of the …
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Mass selective investigations of ultrafast dynamical processes and spectroscopy
… by Resonantly-Enhanced Multiphoton Ionization (REMPI) with Time-of-Flight mass spectrometric (TOFMS) detection.
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Experimental and theoretical investigations of molecular ions by spectroscopy as well as ion mobility and mass spectrometry
… (resonance-enhanced multiphoton ionization – REMPI, electrospray ionization – ESI, atmospheric pressure chemical ionization – APCI) in ion mobility (IM) spectrometry. In order to gain a better understanding of the ionization processes, several spectroscopic, mass spectrometric and theoretical …
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Estudo fotodinâmicos por espectroscopia laser e radiação síncrotron: de pequenos hidrocarbonetos aos polímeros
… study of Rydberg states of the HC3N spectroscopy REMPI, (3+1) photons, completes the overview of these Rydberg states, proposed by Connors et al, contributing with corrections and additions to this old analysis on absorption spectra. Our results indicate that the series most intense are of type (n …
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The photodissociation of small Aldehydes: a refined understanding of prototypical dynamical systems
… mapped ion (VMI) images and speed correlated REMPI spectra of CO(v = 0, 1). The traditional transition state (TS) mechanism is dominant at the extremes of this energy range, with the radical channels on the T1 and So surfaces dominant elsewhere. The roaming channel branching fraction is …
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Multiphoton ionization and photoelectron spectroscopy of hydrogen iodide with fixed wavelength and tunable laser sources
… W/cm$\sp2,$ have demonstrated (2 + 1)-REMPI ionization of the HI molecule through resonances in the intermediate $b\sp3\Pi\sb2$(v = 0,1;J = 0-12) state. However, resonances with Rydberg series in the ionization continua between the $X\sp2\Pi$ manifolds seen in single photon ionization …
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Which way did it go? Revisiting the time-resolved study of bromine atom and iodine molecule
… Resonance Enhanced Multiphoton Ionization (REMPI)-Time of Flight Mass Spectroscopy (TOFMS), allows unambiguous identification of products. The interaction is initiated in a restricted region of phase space defined by the geometry of the precursor dimer, H(D)Br$\rm\sp {*}I\sb 2$. The …
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Spectroscopy of Ultracold LiRb Molecules Using Ionization Detection
… resonantly enhanced multiphoton ionization (REMPI) spectroscopy. We identify several vibrational levels of the α3Σ+, (3)3ΠΩ and (4)3Σ + states and compare our observations with theoretical calculations. As LiRb is one of the least studied heteronuclear diatomic molecules, these studies are …
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Photoionisation und Photodissoziation von Wasserstoff
… darstellt. <br>In ns-Laserexperimenten wurde die REMPI via Anregung der H2 E,F und B Zustaende <br>untersucht. Zusaetzlich zur Ionisation fanden wir Photodissoziation in H(1s) + <br>H(nl) mit einem und zwei Photonen aus dem Zwischenzustand. Fuer den B(v=4) <br>Zustand wurde das …
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State-resolved slice imaging of photochemical dynamics
… resonance enhanced multi photon ionization (REMPI)</p> <p>method. This powerful technique allows selecting the initial quantum states of the reactants</p> <p>and determining the nal quantum states, energy, the orientation and alignments of</p> <p>the products. In the investigations of …
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Wasserstoffatomdynamik in Radikalen, Clustern und Biomolekülen
Die Untersuchung der molekularen Dynamik elektronisch angeregter Moleküle stand im Zentrum dieser Arbeit. In vielen Fällen ist die Dynamik dieser Zustände mit einer Bewegung von Wasserstoffatomen assoziiert. Mittels zeit- und frequenzaufgelöster Photofragmentspektroskopie lassen sich Aussagen über …
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Resonance Two Photon Ionization Study of Binary Clusters of Styrene with Polar Molecules
One-color resonance two-photo ionization (R2PI) spectra of mixed clusters of styrene molecule (S) with polar molecules [water (W), methanol (M), ethanol (E), and trifuoroethanol (T)] were measured through the S1←S0 transition of the styrene molecule. The spectra reveal a rapid increase in …