Detection of ''cold'' spectra from a room-temperature ensemble: Magnetic rotation spectroscopy with simple interpretation in terms of molecular pendular states

Slenczka, Alkwin (1997) Detection of ''cold'' spectra from a room-temperature ensemble: Magnetic rotation spectroscopy with simple interpretation in terms of molecular pendular states. JOURNAL OF PHYSICAL CHEMISTRY A, 101 (41). pp. 7657-7663. ISSN 1089-5639, 1520-5215

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Abstract

The anisotropic orientation of the figure axis of pendular molecules is directly detected by polarization spectroscopy for IC1 in the excited A (3) Pi(1) state. A simple geometric model is outlined that simulates all spectral features over a wide range of experimental parameters, without any fitting procedure. The experimental technique, closely related to magnetic rotation spectroscopy, strongly favors low rotational states and is also selective for Delta J within a rotational band. Spectra obtained using a gas cell at room temperature thereby become even sparser and simpler than can be attained by cooling molecules to a few kelvin. Moreover, it provides a technique for local measurement of electric or magnetic field strengths without mechanical devices.

Item Type: Article
Uncontrolled Keywords: LINE-NARROWING SPECTROSCOPY; POLARIZATION SPECTROSCOPY; AMORPHOUS SOLIDS; ELECTRIC-FIELDS; PARAMAGNETIC MOLECULES; DIPOLE-MOMENT; LASER FIELDS; ORIENTATION; ALIGNMENT; HOLES
Subjects: 500 Science > 540 Chemistry & allied sciences
Divisions: Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry III - Physical Chemistry (Molecular Spectroscopy and Photochemistry) > Prof. Dr. Alkwin Slenczka
Depositing User: Dr. Gernot Deinzer
Date Deposited: 28 Mar 2023 06:39
Last Modified: 28 Mar 2023 06:39
URI: https://pred.uni-regensburg.de/id/eprint/50482

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