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Vibrational Relaxation and Hot Luminescence of Ne * 2 Centers in Solid Neon
Author(s) -
Gaethke R.,
Gürtler P.,
Kink R.,
Roick E.,
Zimmerer G.
Publication year - 1984
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.2221240136
Subject(s) - luminescence , neon , relaxation (psychology) , atomic physics , vibrational energy relaxation , exciton , solid state , materials science , solid surface , synchrotron radiation , chemistry , physics , argon , optics , condensed matter physics , excited state , chemical physics , psychology , social psychology , optoelectronics
Hot luminescence of Ne * 2 centers (molecular type self‐trapped excitons) in solid Ne is measured under state selectiveexcitation using synchrotron radiation. The luminescence spectra are analysed with the aid of a new theory on vibrational relaxation of the Ne * 2 centers. It is possible to show that the rate of relaxation is slower for centers located at the surface than for centers in the bulkof the Ne solid. In combination with a direct measurement of the lifetimes (1 ns for 1 ∑ + u ; 5 μs for 3 ∑ + u ), absolute values for the relaxation rates are obtained. They range between 6.6 × 10 4 s −1 (bulk) and 6.6 × 10 3 s −1 (surface).