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Time‐Resolved Investigation of the Ne 2 * Luminescence
Author(s) -
Seitfudem G.
Publication year - 1987
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221390135
Subject(s) - excited state , luminescence , excitation , atomic physics , vibrational energy relaxation , excimer , lattice (music) , relaxation (psychology) , lattice vibration , atmospheric temperature range , vacancy defect , chemistry , materials science , fluorescence , physics , condensed matter physics , optics , phonon , psychology , social psychology , optoelectronics , quantum mechanics , meteorology , acoustics , crystallography
Abstract Solid Ne condensed at a temperature of 7 K is excited with a pulsed electron beam. The resulting emission spectra are recorded during the excitation pulse and in the time range from 0 to 2.3 ms after excitation. Relative contributions from the different vibrational levels are fitted to the Ne 2 *emissions, measured at various times after the excitation. A nearly constant contribution from the 0th vibrational level is found which can be explained by complete relaxation of the 0 u − excimer state. The degree of relaxation and the decay time of the luminescence contributions from the higher vibrational levels change within the 2.3 ms. It is proposed that the l u state of Ne emits from lattice sites at one vacancy, two vacancies, and from regular lattice sites.