An Electron Evaporator. Electron beams are sometimes used to melt and evaporate metals in order to deposit thin metallic films onsurfaces (similar to gold plating). One method is to put the material to be evaporated (called the "target") into a small tungsten cup (acrucible that has a very high melting point) and direct a beam of electrons at the target. Your team has been given the task of designingan electron-beam evaporator. The crucible is a cylinder, 2.0 cm in diameter and 1.5 cm in height, and contains a small target of purenickel (Ni). The electrons are accelerated through a potential difference of V = 1.20 kV, and form a beam that originates below thecrucible, exactly D = 4.00 cm off its center, in the +x direction (see the drawing).Field regionDElectronbeam (a) What is the speed of the electrons in the beam?(b) You must steer the electron beam with a magnetic field so that it curls over the lip of the cup and strikes the nickel target. Assumingthat a uniform field exists above the cup (the field is zero below), what must be the radius of the beam's circular path?(c) In what direction should the field point if the beam initially approaches the cup from the -y axis?(d) What must be the magnitude of the uniform magnetic field?(a) Number i(b) Number(c)(d) NumberiiUnitsUnitsUnits

You have posted a question with multiple sub-parts. But as per the guideline we are only be able to…

(a) What is the speed of the electrons in the beam? (b) You must steer the electron beam with a magnetic field so that it curls over the lip of the cup and strikes the nickel target. Assuming that a uniform field exists above the cup (the field is zero below), what must be the radius of the beam's circular path? (c) In what direction should the field point if the beam initially approaches the cup from the -y axis? (d) What must be the magnitude of the uniform magnetic field? (a) Number i (b) Number (c) i (d) Number i Units Units Units <

(a) What is the speed of the electrons in the beam? (b) You must steer the electron beam with a magnetic field so that it curls over the lip of the cup and strikes the nickel target. Assuming that a uniform field exists above the cup (the field is zero below), what must be the radius of the beam's circular path? (c) In what direction should the field point if the beam initially approaches the cup from the -y axis? (d) What must be the magnitude of the uniform magnetic field? (a) Number i (b) Number (c) i (d) Number i Units Units Units <

Modern Physics

3rd Edition

ISBN:9781111794378

Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Chapter7: Tunneling Phenomena

Section: Chapter Questions

Problem 4P

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