| Syllabus |
The experiments are conducted in groups of two students. The scheduled experiments are: Vacuum Methods: Principles of vacuum systems, Mechanical pumps, Diffusion pumps, Rirani gauge, Penning gauge, Pumping speed, Conduction, LeaksFerromagnetic Hysteresis: Magnetic dipole moment, Paramagnetism, Diamagnetism, Ferromagnetism, Curie temperature, Ampere law, Magnetic permeability Hall Effect: Lorentz force, Hall voltage, Hall coefficient in metals and semiconductors, Carrier types, Carrier mobility, Hall effect measurement of carrier density and mobility in semiconductors, Magnetoresistance, Quantum Hall effect. Franck-Hertz Experiment: Bohr’s atomic model, Electrons scattering by atoms, Ionization potential, Hg vapor tube. Photoelectric Effect: The photoelectric effect and the dual (wave-particle) nature of light, Planck’s constant, Atomic emission spectra, Experimental apparatus: photodiode, diffraction grating, spectroscope. Zeeman Effect: Electron spin, Spin-orbit coupling, Lande g-factor, Total angular momentum and total atomic magnetic moment, Normal Zeeman effect, Anomalous Zeeman effect and Paschen-Bach effect. Molecular Spectroscopy: I2 absorption spectrum: Diatomic molecules, Born-Oppenheimer approximation, Electronic levels, Vibrational and rotational energies, Molecular transitions, Franck-Condon rule. Population distribution of vibrational level in ground state, Absorption lines intensities. Monochromator, Diffraction grating, Photomultiplier. X-ray Spectroscopy: X-ray source, X-rays-matter interaction: Photoelectric effect, Compton scattering, Pair production, X-ray attenuation coefficient, Bragg diffraction, Lattice constants, X-ray diffractometer, Geiger-Muller detector. Radiation Detectors I: Alpha-, Beta-, Gamma-radiation, Radiation-matter interaction: Photoelectric effect, Compton scattering, Pair production. Scincillator operation principle, Gamma-rays spectroscopy, Cobalt-60, Soium-22, Caesium-137 spectra, Photomultiplier, Multichannel analyzer, Pulse height analysis, Resolution, Radioactive decay statistics and Poisson distribution, Count rate error. Radiation Detectors II: Geiger-Muller detector operational principle, Detector efficiency and dead time, Absorption law, Absorption and Mass attenuation coefficients, Radioactive decay law, Mean lifetime, Half-life, Activity.
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| Bibliography |
A. Mellisinos, “Experiments in Modern Physics”, Academic Press (1966) J.H. Moore, C.C. Davis, M.A. Coplan, “Building Scientific Apparatus”, Addisson-Wesley, London (1983) G.F. Knoll, “Radiation Detection and Measurements, J. Wiley & Sons, New York (1979) R. Serway, C. Moses, C. Moyer, “Modern Physics” 3rd Ed,, Brooks Cole (2004)
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