Tez özetleri Astronomi ve Uzay Bilimleri Anabilim Dalı

Investıgatıon Of Fıne And Hyperfıne Structures Of Lanthanum Element

Investigation of fine and hyperfine structures of neutral Lanthanum (La I) element was aimed in this study.

Hyperfine structures of neutral Lanthanum were investigated experimentally in the wavelenghts range of 570 nm – 590 nm and 700 nm – 825 nm. 19 spectral transition were measured with Optogalvanic Spectroscopy method using dye laser and
Titan-Saphire laser in a hollow cathode discharge.
16 Magnetic dipol hyperfine structure constants A and electric quadropol hyperfine structure constants B were determined for the odd parity energy levels. Six magnetic dipole A and 11 electric quadropole B hyperfine structure constants were obtained for the first time in this study.
Fine structure of Lanthanum was investigated theoretically. Fine structure parameters of odd parity configurations; 5d6s6p, 4f6s², 6s²6p, 5d²6p, 4f5d6s of La I were determined. 94 energy levels of 97 experimentally known energy levels were fitted with theoretical energy values by using multi-configurational fit method.

BALLIKAYA Sedat ,

Danışman : Prof. Dr. Emine RIZAOĞLU

Anabilim dalı : Fizik

Program : Genel Fizik

Yılı : 2006

Tez savunma Jürisi : Prof. Dr. Emine RIZAOĞLU (Danışman)

Prof. Dr. Yani SKARLATOS

Prof. Dr. Nurten ÖNCAN

Doç. Dr. Y. Gürkan ÇELEBİ

Yrd. Doç. Dr. Saffettin YILDIRIM