Structure and dynamics from polarized parent/product photofragmentation spectroscopy

Autor:	Leonard C. Pipes, Elva A. Torres, Delroy A. Baugh
Rok vydání:	1999
Předmět:	chemistry.chemical_compound Dipole chemistry Excited state Potential energy surface Molecule Nitrosyl chloride Physical and Theoretical Chemistry Atomic physics Wave function Spectroscopy Excitation
Zdroj:	Faraday Discussions. 113:279-290
ISSN:	1364-5498 1359-6640
DOI:	10.1039/a903734i
Popis:	Energy-level selected nitrosyl chloride (ClNO) was rotationally polarized (aligned/oriented) and photodissociated at 355 nm. Polarization sensitive detection of the NO(2Π) product was used to measure the magnitudes and relative phases of the transition amplitudes (T-matrix elements) for the coherent excitation of continuum wavefunctions representing the dissociating molecule on the excited potential energy surface. Rotational state-populations were also measured and a smaller number of ∣NΩ) levels were found to be occupied than in non-state-selected, jet-cooled experiments. The theoretical formalism necessary for the extraction of the T-matrix elements from fully polarized experiments is also presented. Finally, hexapole focusing curves demonstrate excellent ∣JK) energy-level selection for the parent ClNO and the NO(2Π) photofragment angular distribution demonstrates for the first time dipole orientation and rotational alignment, i.e., ∣M∣ selection, of a state-selected asymmetric top by an electrostatic hexapole.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1395730515e48a6361dea0e9f7f9a15a https://doi.org/10.1039/a903734i Zobrazit plný text záznamu