Kajian Teoritis penentuan Tenaga Vibrasi-Rotasi molekul Diatomik

Anam , Choirul (2001) Kajian Teoritis penentuan Tenaga Vibrasi-Rotasi molekul Diatomik. Undergraduate thesis, FMIPA UNDIP.

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Abstract

Telah dilakukan penjabaran tingkat tenaga vibrasi-rotasi molekul diatomik dan pengaplikasian dan hasil penjabaran, tersebut. Tingkat tenaga vibrasi-rotasi molekul diatomik dapat diperoleh dan penjabaran persamaan Schrodinger tiga dimensi dalam koordinat bola dengan memasukkan potensial Hooke dan potensial Morse. Aplikasi dart rumusan tersebut, digunakan untuk menentukan jarak antar inti molekul. HCl pada state dasar elektronik pada setiap bilangan kuantum vibrasional n, dan digunakan untuk menentukan tenaga pusat pita dan tenaga tiap¬tiap gar-is spektrum molekul HBr pada state elektronik dasar. Hasil dart perhitungan teoretis tersebut kemudian dibandingkan dengan hasil eksperimen. Dengan memasukkan potensial Hooke diperoleh eigennilai bahwa antara gerakan vibrasi dan rotasi tidak terjadi coupling, sedangkan dengan potensial Morse diperoleh bahwa antara gerakan vibrasi dan rotasi terjadi coupling. Hasil perbandingan perhitungan dart perumusan teoretis tersebut dan basil eksperimen ternyata ada kesesuaian yang menmaskan. Kata kunci : Tingkat tenaga, vibrasi-rotasiDerivation of vibrating-rotating energy levels of diatomic molecule and applications of theoretical result has been done in this research. The vibrating-rotating energy levels of a diatomic molecule can be derived from ScluZdinger equations in spherical polar coordinates by inserting of Hooke's potential and Morse's Potensial. The applications of theoretical result is to calculate intemuclear distances of HO in different vibrational levels of electronic ground state and 'to calculate band origin energy and lines positions of lif3r spectrum in the electronic ground state, then, the theoretical results are compared with experimental results, Insertion of Hooke's potensial into the Schrodinger equations yields eigenvalue in which there is no coupling between vibration and rotation, while insertion of MorSe's potential yields it with the existence of coupling between them. The comparation of theoretical and experimental results are satisfying.

Item Type:Thesis (Undergraduate)
Subjects:Q Science > QC Physics
Divisions:Faculty of Science and Mathematics > Department of Physics
ID Code:30512
Deposited By:Mr UPT Perpus 1
Deposited On:01 Nov 2011 12:27
Last Modified:01 Nov 2011 12:27

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