Atomic Physics

Atomic Physics. Step Potential. Consider a particle of energy E moving in region in which the potential energy is the step function U(x) = 0, x<0 U(x) = V 0 , x>0 What happened when a particle moving from left to right encounters the step? The classical answer is

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Atomic Physics

Atomic Physics. Atoms with dipoles and other symmetries. Games and surfaces (complete article on website). Examples of collision excitation symmetries. In the examples, Consider the cross sections σ for different magnetic sublevels… All m L are equivalent/equal

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Atomic Physics

Chapter 9. Atomic Physics. Atomic Physics. Classical physics (Newtonian physics) – development of physics prior to around 1900 Classical physics was generally concerned with macrocosm – the description & explanation of large-scale phenomena

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Atomic Physics

Atomic Physics. Atoms with dipoles – surface effects. Any sort of collision…. 1. Ion Velocity: E/mc 2 = E(MeV)/0.5(MeV) = ½ M N v 2 / mc 2 Therefore v/c = √ [ 4E(MeV) (m/M N )] = ( 2/√1840 ) √[(E (MeV)/A( amu )] Giving v = 13.9 mm/ns √[(E (MeV)/A( amu )]

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Atomic Physics

Atomic Physics. Hyperfine structure Part 3 Higher order multipole moment effects A general theory Some experiments. Elaborating our topic – hyperfine structure…. Higher order multipole moment hyperfine effects.

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Basic Atomic Structure

Basic Atomic Structure. 1/16/09. I . Subatomic Particles subatomic particle = a particle found inside the atom nucleus = small, dense area in center of atom (p + & n 0 found here). amu (atomic mass unit) = exactly 1/12 the mass of carbon-12 atom.

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Atomic Physics

Atomic Physics. Core. (d) Half-life -use the term half-life in simple calculations which might involve information in tables or decay curves (e) Safety precautions -describe how radioactive materials are handled , used and stored in a safe way. Half life.

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Atomic Physics

Atomic Physics. Chapter 28. Atomic Models. Introduction. How do neon signs work?. Our main focus will be on the hydrogen atom. It is the simplest atomic system. Why is it important to study the hydrogen atom?

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Atomic Physics

Atomic Physics. Chapter 29. Lecture 24. All nature, then, as self-sustained, consists Of twain of things: of bodies and of void In which they're set, and where they're moved around. …. This ultimate stock we have devised to name Procreant atoms, matter, seeds of things,

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Basic Atomic Structure

Basic Atomic Structure. A Whole New Reality The Atomic Scale. In a word we’re talking small! If an atom were the size of a BB, you’d be 23,000 miles tall! Atoms are 99.9999999999999% empty space! Can we “see” them?. Platinum and Oxygen Atoms. The Umbrellas Project. CurtainAcross Rifle Gap.

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Atomic Physics 2

Atomic Physics 2. Topics. Recap Quantization of Energy Quantum States of Hydrogen Spin and the Pauli Exclusion Principle Summary. Recap. The wave functions for the hydrogen model are of the form. where the Y ( q , f ) are the spherical harmonics

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Basic Atomic Structure

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Atomic Physics

Atomic Physics. Micro-world Macro-world Lecture 15. Dimitri Mendeleev. Periodic table of elements. Elements in vertical rows have similar chemical properties. Inert gases. Schroedinger’s Equation for multi-electron Atoms. -. -. -. +. -. -.

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Atomic Physics

Quantum Physics 2002. Atomic Physics. Recommended Reading: Harris Chapter 7. L. Current. r. m. v. . Angular Momentum and Magnetic Dipole Moment.

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SUB-ATOMIC PHYSICS

SUB-ATOMIC PHYSICS. STANDARD MODEL. Matter is composed of objects even smaller than the atom. These “particles” have been detected in “atom smashers” where atom are made to collide at speeds close to the speed of light. STANDARD MODEL. BOSONS integer spin. FERMIONS n/2 spin. UP. CHARM.

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Atomic Physics

Chapter 29. Atomic Physics. Early Models of the Atom – Rutherford. Rutherford Planetary model Based on results of thin foil experiments Positive charge is concentrated in the center of the atom, called the nucleus Electrons orbit the nucleus like planets orbit the sun.

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Atomic Physics

Atomic Physics. “Driving Doppler Down” Doppler-free methods Laser cooling, trapping, quantum computing. COOLING – FUN demos…. Motion of an atom affects the absorption frequency, and its emission frequency. A reminder:. Question: Estimate the halfwidth at room temperature

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Atomic Physics II

Atomic Physics II . Hydrogen Atom Model. Thomson Model.

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Atomic Physics

Atomic Physics. The Dirac equation for a one-electron atom Part 1. Controlling the Quantum World: http://www.nap.edu/catalog.php?record_id=11705.

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ATOMIC PHYSICS

ATOMIC PHYSICS. Dr. Anilkumar R. Kopplkar Associate Professor S.S. Margol College, SHAHABAD Gulbarga,Karnatka- India. Atomic Physics: Vector Atom model. Space quantization Electron spin Quantum numbers Pauli`s Exclusion principle Stern Gerlach Experiment

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Atomic Physics

Atomic Physics. Question 1. Calculate the Kinetic Energy gained by an electron when it is accelerated through a P.D. of 50kV in an X-ray tube. Firstly we know that KE is measured in Joules. JDeV….. eV = ½mv 2 (KE) eV = ( 1.6 X 10 -19 )(50000) = 8 X 10 -15 Joules = KE.

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Atomic Physics

Atomic Physics. K K Dey Assistant Professor in Physics B B College, Asansol. hydrogen atom It is the simplest atomic system. Why is it important to study the hydrogen atom? The hydrogen atom is an ideal system for relating theory to experimentation.

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