Zur Bestimmung von Teilchengroessenverteilungen aus Streulichtmessungen

SIGLEAvailable from TIB Hannover: RA 1396(1990,5) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Untersuchung der Struktur und Dynamik der Rekonstruktion der Molybdaen(001)-Oberflaeche mit hochaufloesender Helium-Atomstrahlstreuung

SIGLEAvailable from TIB Hannover: RA 1396(1991,6) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

1. Der impulsive Stossmechanismus bei der Streuung von Ionen und Atomen an Molekuelen im Energiebereich von 0.1 bis 30 eV. 2. Schwingungsanregung von Fluorwasserstoff-Molekularstrahlen durch IR-Laserlicht

TIB: RA 1396 (1986,6)+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

Messung ueberthermischer Ionisationsquerschnitte fuer He"*(2"1","3S) im Stoss mit verschiedenen Targetteilchen

Available from TIB Hannover: RA 1396(1991,7) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

Streuexperimente mit Clustern

Copy held by FIZ Karlsruhe; available from UB/TIB Hannover / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

LAMBDA-Dublett spezifische Untersuchung von Rotations- und Feinstrukturuebergaengen des OH bei Stoessen mit H2

TIB: RA 1396 (1986,11)+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

Hochaufloesende Spektroskopie von Molekuelen in "4Helium- und "3Helium-Clustern

The experiments described in this thesis are concerned with the physics of liquid "4He and "3He droplets and their application to the high resolution spectroscopy of embedded molecules. These droplets, formed in a supersonic expansion into vacuum, consist of several thousand atoms and cool to their final temperatures by evaporative cooling. They are easily doped with molecules by passing the droplet beam through a pick-up chamber. In order to explore the interaction between the chromophore and the quantum droplet, the doped droplets are studied by means of laser spectroscopy, subsequently ionized by electron impact and detected in a quadrupole mass spectrometer. We have studied the vibrational excitation of sulfur hexafluoride (SF_6) and carbonyl sulfide (OCS) in the droplets via beam depletion spectroscopy. The depletion spectra are red shifted with respect to the gas phase and are rotationally resolved. We have successfully fitted a free rotor Hamiltonian to the measured spectra. While for SF_6 and OCS in "4He droplets, no deviations from the symmetry of the free rotors were found, the quantum environment does influence the molecular motion. This is reflected in the change of the molecular constants with respect to the gas phase. The rotational constants are reduced by a factor of three, whereas the centrifugal distortion constants increase by several orders of magnitude. The analysis of the frequency shift of the SF_6 spectra as a function of droplet size gives first experimental evidence that a so called snowball like structure of helium is formed around the embedded molecule. The average temperature of "4He droplets can be derived from the rotational structure. For mean sizes of more than 2000 atoms the temperature of the droplets is found to be T = 0.37 #+-# 0.02 K. (orig.)Available from TIB Hannover: RA 1396(1997,10) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

Entwicklung von Methoden zur Analyse von Multiphotonenprozessen

Available from TIB Hannover: RA 1396(1998,9) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

Laser-Doppler-anemometrische Messungen der Geschwindigkeitskomponente in Hauptstroemungsrichtung in der viskosen Unterschicht einer turbulenten Kanalstroemung

Available from TIB Hannover: ZA 1982(97) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

Chemolumineszente Ionen-Molekuelreaktionen von Ionen der dritten Hauptgruppe mit Halogenen: Neue optische Spektren und Reaktionsdynamik

Copy held by FIZ Karlsruhe; available from UB/TIB Hannover / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman