KCs molekulas 4(1)Sigma (+) stāvokļa pētījumi ar lāzeru inducētās fluorescences un Furjē spektroskopijas metodēm
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Latvijas Universitāte
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Abstract
Šajā maģistra darbā ar lāzeru ierosinātās fluorescences un Furjē spektroskopijas
metodēm tiek pētīts KCs molekulas 41Σ+ stāvoklis.
Aktuāli ir noskaidrot, cik lielā mērā 41Σ+ stāvokli var uzskatīt par „tīru” singleta
stāvokli. Šī stāvokļa pētījumi ir nozīmīgi, jo 41Σ+ stāvoklis KCs molekulā varētu būt
perspektīvs starpstāvoklis dažādās optiskās shēmās, kuras tiek izstrādātas, lai iegūtu ”ultraaukstas„
molekulas to visstabilākajā v”= 0, J” = 0 stāvoklī.
Darbā ir aprakstītas spektru apstrādes metodes. No iegūtajiem svārstību rotācijas
līmeņiem tiek iegūtas Danhema matricas, no kurām tiek konstruētas RKR potenciālās
enerģijas līknes. Tiek izdarīti secinājumi par Danhema matricu un RKR potenciālu darbības
robežām.
In this Master’s paper the 41Σ+ state of KCs molecule is studied by methods of laser induced fluorescence and Fourier spectroscopy. It is urgent to find out in what degree this state can be considered as clear singlet state. Research of this state is also important because 41Σ+ is a perspective mid-state in many optical schemes, which are developed to get ultra-cold molecules in their ground state v”= 0, J” = 0. Methods of spectra processing are described in this work. Dunham matrixes are made from acquired vibrational-rotational levels. From these matrixes RKR potential energy curves are made. Conclusions are made about validity range of Dunham matrixes and RKR potential energy curves.
In this Master’s paper the 41Σ+ state of KCs molecule is studied by methods of laser induced fluorescence and Fourier spectroscopy. It is urgent to find out in what degree this state can be considered as clear singlet state. Research of this state is also important because 41Σ+ is a perspective mid-state in many optical schemes, which are developed to get ultra-cold molecules in their ground state v”= 0, J” = 0. Methods of spectra processing are described in this work. Dunham matrixes are made from acquired vibrational-rotational levels. From these matrixes RKR potential energy curves are made. Conclusions are made about validity range of Dunham matrixes and RKR potential energy curves.