What are Accelerators? Describe Construction and working of Cyclotron. Nuclear Chemistry | Physical скачать в хорошем качестве

What are Accelerators? Describe Construction and working of Cyclotron. Nuclear Chemistry | Physical

Accelerators are the devices or machines with the help of which we can increase the velocity of projectiles or we can increase the energy of projectiles. As, E = \frac12 mV^2 Where m is mass of projectile and V is its velocity. Accelerators are of two types 1. Electrostatic Accelerator 2. Cyclic Accelerators Also Cyclic Accelerators are of two types a. Linear Cyclic Accelerators (Linac) b. Cyclotron: Lawrence and Livingston, developed a method that avoids the limitations of linac. The instrument used is known as Magnetic Resonance Accelerator or Cyclotron. Principle: When a charged particle (projectile) is placed under a magnetic field it start revolving in a circular path, the velocity of particle can be increased by the application High frequency oscillator in the direction of particle motion. Construction: The cyclotron is consist of two flat semicircular shaped metal boxes called dees. These hollow boxes are slightly separated from each other as shown in figure. A source of projectile is placed at the mid-point of the gap between two dees. The two dees are connected to two terminals of high frequency oscillator. So that alternating high potential can be applied between two dees which acts as the electrodes. The dees are enclosed in a large insulated metal box. Whole metal box is placed between two poles of strong magnets which provide magnetic field perpendicular to the plane of the dees. Working: Suppose the positive ions projectiles are emitted by the source. Let Da is connected to the positive terminal and D, to the negative terminals of high frequency oscillator so that projectile is accelerated to Dg inside D, it will be moving with uniform accelerated velocity. As soon as projectile come out from D, and remain in the gap between D, and Dr. The polarity is changed so the projectile is again accelerated. Like this in every gap, projectile is acc. After passing through number of orbits, the projectile is highly acc. The two dee shaped boxes are arranged in an evacuated metal box: Analytical Reasoning    • Solve Problems Related To Ages With These ...   English Grammar    • Making Sense With Tense #1 - English Grammar   Interview Skills    • Questions You May Be Asked During an Inter...   Managerial Economics    • MCQ #1 of Managerial Economics   Royalty Free Stock Footage    • Flowers - Royalty free footage   Chemical Thermodynamics - Physical Chemistry    • State and Explain first law of thermodynam...   Ionic Equilibria - Physical Chemistry    • Derive expression for Ostwald’s Dilution law.   Electrochemistry - Physical Chemistry    • What are different types of Reversible Ele...   Solid State - Physical Chemistry    • Explain the following terms | Solid State ...   Gaseous State - Physical Chemistry    • Postulates of Kinetic Molecular Theory of ...   Colloidal States - Physical Chemistry    • What is Colloidal Solution? | Colloidal St...   Stereochemistry - Organic Chemistry    • Explain Configuration and Conformation | S...   Nanomaterials - Engineering Chemistry    • Compare top down with bottom up Processes ...   Water and Its Treatment - Engineering Chemistry    • Explain why hard water gives out a curd li...   Electrochemistry - Engineering Chemistry    • Distinguish between metallic and electroly...   Environmental Studies    • MCQ on Environmental Studies Part 8   Optics - Applied Physics    • What are cartesian sign conventions for sp...   For Details Visit http://cepekmedia.co.nf http://cepek.hol.es/ http://edmerls.66Ghz.com/ http://edmerls.tk/