Associate Professor of Physics
|Ph.D.||Atomic and Molecular Physics||Baylor University||1987|
|M.S.||Solid State Physics||Bowling Green State University||1983|
|B.S.||Physics||University of Sri Lanka||1978|
Dr. Ariyasinghe was born and grew up in Sri Lanka. He received B.Sc. (Hon.) from University of Sri Lanka in 1978. After working three years (1978 � 1981) as an assistant lecturer at the University of Sri Lanka, he attended Bowling Green State University (1981 � 1983) where he received M.S. in Physics. Subsequently, he attended graduate school at Baylor University (1983- 1987) and earned the Ph.D. in Physics. After working one year as a lecturer at University of Sri Lanka, he joined Baylor faculty as a post doctoral fellow in June 1988. Prior to becoming an associate professor, he served as a lecturer (1990 � 1998), a senior lecturer (1998- 2002), and an assistant professor (2002 � 2005). He enjoys traveling, working with children, and partaking in sports (cross-country, table tennis, swimming and cricket).
Dr. Ariyasinghe�s research interests are in the area of atomic and molecular physics. He conducts research to understand the interaction of electron beams and ion (H+ and He+) beams with atoms and molecules.Atomic Physics
� Accelerator-based atomic molecular physics
� Auger electron spectroscopy
� Interaction of intermediate-energy electrons with atoms and molecules
Recent Graduate Students
�Electron scattering from alkenes in the energy range 200 � 4500 eV�, joint with P. Wickramachchi, P. Palihawadana, and G. Villela Nucl. Inst. and Meth. Phys. Res. B 267 (2009) 3391 -- 3394.
�Total Electron Scattering Cross Sections of alkanes at intermediate energies�, Joint with P. Wickramarachchi, and P. Palihwadana, Nucl. Inst. and Meth. Phys. Res. B 259 (2007) 841 - 846.
�Total electron scattering cross sections of Kr ans Xe in the energy range 250 - 4500eV� Joint with C. Goains, Phys. Rev. A 70, 1050294 (2005).
�Total electron scattering cross sections of PH3 and SiH4 molecules in the energy range 90 �3500eV� joint with T. Wijerathne and D. Powers. Phys. Rev. A 68, 032708, (2003).
�Absolute K-shell ionization cross-section measurements of B produced by 0.4 - 2.0 MeV H+ and He+ ions and by 0.6 - 1.2 MeV H2+ ions� joint with D. Powers, Phys. Rev. A 59, 1291 (1999).
�Angular distribution of total LMM Auger electron yields produced by energetic He+ ions in Ar, Cl, and S� joint with P. Guo, A. Ghebremedin and D. Powers, Phys. Rev A 51, 2117 (1995).
�Effects of the molecular environment of the C, N, and O Auger electron yields induced by MeV H+ and He+ ions� Joint with R. D. McElroy, Jr., and D. Powers, Phys. Rev. A 36, 3674 (1987).Courses Taught
PHY 1420 - General Physics I
PHY 2435 - General Physics II
PHY 2370 - Modern Physics
PHY 3320 - Intermediate Classical Mechanics
PHY 3330 - Intermediate Electricity and Magnetism
PHY 4340 - Statistical and Thermal Physics
PHY 5V95 - Graduate Research
PHY 5V99 - Thesis
PHY 6V99 - Dissertation