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Advanced Physics Laboratory I

Code
Φ-307
Level
Undergraduate
Category
A
Teacher
E. Iliopoulos, Ch. Katsidis
ECTS
7
Hours
3
Semester
Winter
Display
Yes
Offered
Yes
Goal of the course
This course is the last compulsory lab session of the undergraduate curriculum. It consists of a set of experiments on modern physics. The students attending have to be prepared and to have studied the basic theory and notions of the experiments they conduct. After each lab session they have to prepare and handle a full lab report. Attendance is obligatory and during each session the students’ preparation is examined by the professor.
Program
Section Α: Tuesday, 13:00-16:00
Section B: Tuesday, 16:00-19:00
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.
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)