Question: 4 An electron emitter will be used to make a beam of electrons for a microscope. Electrons are emitted from a hot wire and

4 An electron emitter will be used to make a beam of electrons for a microscope. Electrons are emitted from a hot wire and accelerated between an anode and cathode plate which can be approximated to a parallel plate capacitor. A voltage of 10 kV is applied across two plates, which are 2 cm apart. (a) What is the electric field between the plates? (b) Ignoring relativistic effects, find the velocity of the electrons after acceleration. (c) The beam is 10 nm in diameter and has a flux of 50,000 electrons/second. On average, what is the distance between electrons? (d) Using the answer for (c) and Coulomb's Law, find the acceleration experienced by an electron due to its nearest neighbour. (e) A magnetic filter (see Figure Q4 below) is used to select electrons based on energy. It comprises a semi-circular chamber 10 cm in diameter. What field will be required to use this lens? B d I Electron Aperture I I beam Figure Q4 Diagram of magnetic filter

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Physics Questions!

Imagine you have been hired as a consultant to Miyoko s Creamery, a California - based manufacturer and marketer of vegan food products that substitute for butter and cheese, about the company s...

Managing Scope Changes Case Study Scope changes on a project can occur regardless of how well the project is planned or executed. Scope changes can be the result of something that was omitted during...

Dissertation Topic: "The Effects of Cybersecurity Measures on the Productivity and Well-being of Teleworkers in the Healthcare Industry". Introduction Draft no more than TWO paragraphs here -...

A. CATHODE-RAY TUBE Most televisions and computer monitor in the past used a 2000V small beam of electrons. These electrons are heated from the cathode, which is just a metal wire heated strongly by...

answer the following questions: What are your moral obligations as professionals to prevent such things from happening? What guidance do the professional codes provide (cite specific code sections in...

cristian armani 11 months ago Variable-power supply Research Questions 1 Does the length of the wire in the magnetic field affect the magnetic force? 2 Does the magnitude of the current in the wire...

Q: Principles of Electronics 0241 for the eld 32 grid is used to control the flow of electrons between cathode and plate. The others are called screen grids and are generally held at some constant...

E-Physics Tutorial Book Note: I have attached below the lesson for the 3 activities. Thank you so much for your time and effort. Activity 1. Directions: Use the right-hand rule to determine the...

Use the following information to answer the next three questions An experiment is performed to verify that the charge-to-mass ratio of an electron is 1.76 x 10" C/kg. Electrons are accelerated from...

A car moving east at 45k(m)/(h) turns and travels west at 30k(m)/(h). What is the magnitude and direction of the change in velocity?

Find the Vo in the circuit shown using nodal analysis. Then solve the problem using matlab and compare your results. 12V 2I

For the implicitly - defined function, calculate the derivative with respect to x . s i n ( 3 x t ) = 5 t ( Use symbolic notation and fractions where needed. ) d t d x = Question Source: Rogrestil He...

DCF, sensitivity analysis, no income taxes. (CMA, adapted) Landom Corporation is an international manufacturer of fragrances for women. Management at Landom is considering expanding the product line...

An infinitely long tube of inner radius a and outer radius b is made of a conducting magnetic material. The tube carries a total current I and is placed along the z-axis. If it is exposed to a...

(Multi-step Income, Retained Earnings) Presented below is information related to American Horse Company for 2004. Prepare a multi-step income statement and a retained earnings statement. American...

Costs of Borrowing in exchange for a $400 million fixed commitment line of credit your firm has agreed to do the following. 1. Pay 1.6 percent per quarter on any funds actually borrowed. 2. Maintain...

Orasco Company uses both standards and budgets. For the year, estimated production of Product X is 500,000 units. Total estimated cost for materials and labor are $1,200,000 and $1,600,000. Compute...

Felipe wants to make sure of the success of his new doggy daycare paws by employing the steps in the basic planning process to initiate the process. What kind of activity should we expect Felipe to be

A uniform magnetic field of 0.50 T is directed to the north. At some instant, a particle with charge +0.020 C is moving with velocity 2.0 m/s in a direction 30 north of east. (a) What is the...

An RC filter is shown. The filter resistance R is variable between 180 and 2200 and the filter capacitance is C = 0.086 F. At what frequency is the output amplitude equal to 1/ 2 times the input...

(a) When ice floats in water at 0 C, what percent of its volume is submerged? (b) What is the specific gravity of ice?

What is treaty shopping?

Mama Corporation (a U.S. taxpayer) has a wholly owned sales subsidiary in the Bahamas (Bahamamama Ltd.) that purchases finished goods from its U.S. parent and sells those goods to customers...

Lionais Company has a foreign branch that earns income before income taxes of 500,000 currency units (CU). Income taxes paid to the foreign government are CU 150,000 (30 percent). Sales and other...