Lecture 1 - Particle Physics Group
... Given the list of particles and vertices which exist in a certain theory, (e.g. the SM) we can use FDs to find out all the processes which are allowed by the theory, and make rough estimates of their relative probability. Every vertex and particle corresponds to a term in the Lagrangian (the formula ...
... Given the list of particles and vertices which exist in a certain theory, (e.g. the SM) we can use FDs to find out all the processes which are allowed by the theory, and make rough estimates of their relative probability. Every vertex and particle corresponds to a term in the Lagrangian (the formula ...
The Atom
... Electrons are negatively charged and matter is neutral. If the electrons are so small, what accounts for the rest of the mass in a typical atom? JJ Thomson proposed a model of atom to answer these questions. The model consisted of a spherically shaped atom composed of a uniformly distributed pos ...
... Electrons are negatively charged and matter is neutral. If the electrons are so small, what accounts for the rest of the mass in a typical atom? JJ Thomson proposed a model of atom to answer these questions. The model consisted of a spherically shaped atom composed of a uniformly distributed pos ...
8.044s13 Excited State Helium, He
... electrons. Taking this into account is a difficult problem, and at best the four wavefunctions we have developed will be just some of the non-interacting two-body states that might be combined to approximate the true two-body wavefunctions of an excited state of atomic helium. All the true energy le ...
... electrons. Taking this into account is a difficult problem, and at best the four wavefunctions we have developed will be just some of the non-interacting two-body states that might be combined to approximate the true two-body wavefunctions of an excited state of atomic helium. All the true energy le ...
Arrangement of Electrons in Atoms
... Wave theory any frequency should work (just might take a while) Light must also be a particle! Max Planck(1900) explanation: objects emit energy in small packets called quanta Video - 16 ...
... Wave theory any frequency should work (just might take a while) Light must also be a particle! Max Planck(1900) explanation: objects emit energy in small packets called quanta Video - 16 ...
Chapter 4 - Arrangement of Electrons in Atoms
... 2. EM radiation are forms of energy which move through space as waves a. Move at speed of light (1). 3.00 x 108 m/s b. Speed is equal to the frequency times the wavelength c = νλ (1). Freqency (ν) is the number of waves passing a given point in one second (2). Wavelength (λ) is the distance between ...
... 2. EM radiation are forms of energy which move through space as waves a. Move at speed of light (1). 3.00 x 108 m/s b. Speed is equal to the frequency times the wavelength c = νλ (1). Freqency (ν) is the number of waves passing a given point in one second (2). Wavelength (λ) is the distance between ...
Gamma Decay Supplement - Inside Mines
... electron conversion to decrease the energy of the nucleus. The transitions can occur between two excited states or an excited state and the ground state. This decrease in energy does not change the isotope, it merely reconfigures the nucleons within the nucleus. In the γ-decay process, electromagnet ...
... electron conversion to decrease the energy of the nucleus. The transitions can occur between two excited states or an excited state and the ground state. This decrease in energy does not change the isotope, it merely reconfigures the nucleons within the nucleus. In the γ-decay process, electromagnet ...
BASICS OF BOSE-EINSTEIN CONDENSATION THEORY Y. Castin
... • atoms: waves and particles • the Bose law • when the Bose gas becomes degenerate • how to reach Bose-Einstein condensation • atomic interactions and Gross-Pitaevskii equation ...
... • atoms: waves and particles • the Bose law • when the Bose gas becomes degenerate • how to reach Bose-Einstein condensation • atomic interactions and Gross-Pitaevskii equation ...
collective states of 2d electron-hole system under the influence of
... Institute of Applied Physics of the Academy of Sciences of Moldova Key words: magnetoexciton, Bose-Einstein condensation, electron-hole liquid This study is concerned with a two-dimensional (2D) electron–hole system in an ideal symmetric 2D layer in a strong perpendicular magnetic field with special ...
... Institute of Applied Physics of the Academy of Sciences of Moldova Key words: magnetoexciton, Bose-Einstein condensation, electron-hole liquid This study is concerned with a two-dimensional (2D) electron–hole system in an ideal symmetric 2D layer in a strong perpendicular magnetic field with special ...
Standard EPS Shell Presentation
... Danish physicist Neils Bohr proposed the concept of energy levels to explain the spectrum of hydrogen. When an electron moves from a higher energy level to a lower one, the atom gives up the energy difference between the two levels. The energy comes out as different colors of light. ...
... Danish physicist Neils Bohr proposed the concept of energy levels to explain the spectrum of hydrogen. When an electron moves from a higher energy level to a lower one, the atom gives up the energy difference between the two levels. The energy comes out as different colors of light. ...
The Standard Model - University of Rochester
... 1895 – Radioactive decay discovered by Becquerel 1897 – J.J. Thomson discovers the electron 1900 – Planck’s idea of energy quantization 1905 – Einstein: Brownian motion suggests atoms (oh, photoelectric effect and relativity too) 1911 – Rutherford, using alpha particles demonstrates small, dense, po ...
... 1895 – Radioactive decay discovered by Becquerel 1897 – J.J. Thomson discovers the electron 1900 – Planck’s idea of energy quantization 1905 – Einstein: Brownian motion suggests atoms (oh, photoelectric effect and relativity too) 1911 – Rutherford, using alpha particles demonstrates small, dense, po ...
Lecture 9
... diffraction glasses. They work just like a prism and break up light into its components. Notice the dark spots between the “lines” of the different colors. The number and positions of the lines are the unique signature of the elements. A lab experiment. Note the number and color of the lines. See if ...
... diffraction glasses. They work just like a prism and break up light into its components. Notice the dark spots between the “lines” of the different colors. The number and positions of the lines are the unique signature of the elements. A lab experiment. Note the number and color of the lines. See if ...
Midterm review
... A: Ionization energies are very high at the noble gases because they have the highest number of protons (positive charge) for that quantum number n. B: Exception to general trend of increase Iz with increase Z. Due to going from filling 1s shell to 1p shell and since p penetrates less well then s it ...
... A: Ionization energies are very high at the noble gases because they have the highest number of protons (positive charge) for that quantum number n. B: Exception to general trend of increase Iz with increase Z. Due to going from filling 1s shell to 1p shell and since p penetrates less well then s it ...
Electron scattering
Electron scattering occurs when electrons are deviated from their original trajectory. This is due to the electrostatic forces within matter interaction or, if an external magnetic field is present, the electron may be deflected by the Lorentz force. This scattering typically happens with solids such as metals, semiconductors and insulators; and is a limiting factor in integrated circuits and transistors.The application of electron scattering is such that it can be used as a high resolution microscope for hadronic systems, that allows the measurement of the distribution of charges for nucleons and nuclear structure. The scattering of electrons has allowed us to understand that protons and neutrons are made up of the smaller elementary subatomic particles called quarks.Electrons may be scattered through a solid in several ways:Not at all: no electron scattering occurs at all and the beam passes straight through.Single scattering: when an electron is scattered just once.Plural scattering: when electron(s) scatter several times.Multiple scattering: when electron(s) scatter very many times over.The likelihood of an electron scattering and the proliferance of the scattering is a probability function of the specimen thickness to the mean free path.