University Physics with Modern Physics (14th Edition)
14th Edition
ISBN: 9780321973610
Author: Hugh D. Young, Roger A. Freedman
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 38, Problem 38.45PP
To determine
Which option will generate higher-energy photons in this linear accelerator.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
(a.) In a cathode ray tube the electrons are accelerated through a PD of 500V and then pass between deflecting plates which are 0.05m long.(i.) Calculate the time it takes an electron to pass between the plates.
(ii.) If the PD across the plates is 10V DC and the plates are 1cm apart, calculate the angle through which the electrons are deflected.(iii.) Explain why the deflection produced by an alternating voltage, applied to the deflecting plates, can be zero at some high frequency.
Higher-energy photons might be desirable for the treatment of certain tumors. Which of these actions would generate higher-energy photons in this linear accelerator? (a) Increasing the number of electrons that hit the tungsten target; (b) accelerating the electrons through a higher potential difference; (c) both (a) and (b); (d) none of these.
Galactic cosmic rays (GCRs) in the 100 MeV-1.00 GeV energy range pose the greatest radiation danger to astronauts in Earth orbit or on future interplanetary missions. As we shall find in the chapter
on nuclear physics, fast-moving protons are 10 times as effective in causing radiation damage as x-rays of the same energy. Approximately 85% of GCRS are fast-moving protons, and spacecraft
traveling in interplanetary space would require thick shielding to attenuate not only the incident cosmic rays, but also the shower of secondary particles created when the cosmic ray particles impacted
the shielding material.
(a) What is the speed (in terms of c) of a 1.00 GeV cosmic ray proton? The rest mass of the proton is 938 MeV. The phrase "a 1.00 GeV cosmic ray proton" means that the kinetic energy of the
proton is 1.00 GeV.
As we contemplate space travel at relativistic speeds, we must consider the low-density abundance of atomic hydrogen in the interstellar medium (ISM), estimated to be…
Chapter 38 Solutions
University Physics with Modern Physics (14th Edition)
Ch. 38.1 - Silicon films become better electrical conductors...Ch. 38.2 - Prob. 38.2TYUCh. 38.3 - Prob. 38.3TYUCh. 38.4 - Prob. 38.4TYUCh. 38 - Prob. 38.1DQCh. 38 - Prob. 38.2DQCh. 38 - Prob. 38.3DQCh. 38 - Prob. 38.4DQCh. 38 - Prob. 38.5DQCh. 38 - Prob. 38.6DQ
Ch. 38 - Prob. 38.7DQCh. 38 - Prob. 38.8DQCh. 38 - Prob. 38.9DQCh. 38 - Prob. 38.10DQCh. 38 - Prob. 38.11DQCh. 38 - Prob. 38.12DQCh. 38 - Prob. 38.13DQCh. 38 - Prob. 38.14DQCh. 38 - Prob. 38.15DQCh. 38 - Prob. 38.16DQCh. 38 - Prob. 38.17DQCh. 38 - Prob. 38.1ECh. 38 - Prob. 38.2ECh. 38 - Prob. 38.3ECh. 38 - Prob. 38.4ECh. 38 - Prob. 38.5ECh. 38 - Prob. 38.6ECh. 38 - Prob. 38.7ECh. 38 - Prob. 38.8ECh. 38 - Prob. 38.9ECh. 38 - Prob. 38.10ECh. 38 - Prob. 38.11ECh. 38 - Prob. 38.12ECh. 38 - Prob. 38.13ECh. 38 - Prob. 38.14ECh. 38 - Prob. 38.15ECh. 38 - Prob. 38.16ECh. 38 - Prob. 38.17ECh. 38 - Prob. 38.18ECh. 38 - Prob. 38.19ECh. 38 - Prob. 38.20ECh. 38 - Prob. 38.21ECh. 38 - An electron and a positron are moving toward each...Ch. 38 - Prob. 38.23ECh. 38 - Prob. 38.24ECh. 38 - Prob. 38.25ECh. 38 - Prob. 38.26PCh. 38 - Prob. 38.27PCh. 38 - Prob. 38.28PCh. 38 - Prob. 38.29PCh. 38 - Prob. 38.30PCh. 38 - Prob. 38.31PCh. 38 - Prob. 38.32PCh. 38 - Prob. 38.33PCh. 38 - Prob. 38.34PCh. 38 - Prob. 38.35PCh. 38 - Prob. 38.36PCh. 38 - Prob. 38.37PCh. 38 - Prob. 38.38PCh. 38 - Prob. 38.39PCh. 38 - Prob. 38.40CPCh. 38 - Prob. 38.41PPCh. 38 - Prob. 38.42PPCh. 38 - Prob. 38.43PPCh. 38 - Prob. 38.44PPCh. 38 - Prob. 38.45PP
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- How the critical frequency of synchrotron radiation depends on the energy of the electron? - does no depend; -~Y; -~^2; -~y^3; -~y^4.arrow_forwardErnest Rutherford is famous for, among other things, shooting alpha particles at unsuspecting gold atoms. Consider an alpha particle endowed with 5.00 MeV of energy. Determine the closest distance this particle can approach the nucleus of a gold atom before deflectingarrow_forwardA cyclotron used to accelerate protons has a maximum radius of 0.4 m and the magnetic induction used is one tesla. Find the frequency of oscillator connected to the dees and the maximum velocity of emerging protons. Through what P.D. must the protons be accelerated from rest to achieve this speed? If deuterons are used instead of protons, what would be their final energy? Mp= 1.67 x 10-27 kg.arrow_forward
- electron passing of 16 : Speed undeviated through a region of cross electric and magnetic fields of magnitude 4 × 105 V/m and 0.02 Wb/m² respectively in meter per an second is ... (a) 2 × 106 (b) 8 × 106 (c) 2 x 107 (d) 8 × 107arrow_forwardPhotons with higher energy could be desirablefor the treatment of certain tumors. Which of these actions would generatephotons with higher energy in this linear accelerator? (a) Increasingthe number of electrons hitting the tungsten target; (b) accelerating the electrons through a higher potential difference; (c) both (a) and (b); (d) neither .arrow_forwardSuppose a cyclotron is operated at an oscillator frequency of 12.4 MHz and has a dee radius 45.3 cm. Estimate the total path length traveled by a deuteron in the cyclotron during the (entire) acceleration process. Assume that the accelerating potential between the dees is 84.3 kV. The deuteron mass is m - 3.34 x 10-27 kg.arrow_forward
- I) What is the frequency of radiation required to supply 1.0 x 102 J of energy from 8.5 x 1027 photons? II) Determine the wavelength of a neutron traveling at 1.00 x 10 m/s (Massneutron = 1.675 x 10 24 g)arrow_forwardSuppose a cyclotron is operated at an oscillator frequency of 14.3 MHz and has a dee radius 47.4 cm. Estimate the total path length traveled by a deuteron in the cyclotron during the (entire) acceleration process. Assume that the accelerating potential between the dees is 63.4 kV. The deuteron mass is m = 3.34 x 10 27 kg. Number 353 Unitsarrow_forwardAn electron accelerated in an x-ray tube hits an anode (positively charged plate) target. V= HOTE m/s +High V- = anode kV cer cer Ger 4848 46 N Now 484846 a) Assuming all of its energy is transferred in generating x-rays, how fast is the electron moving when it reaches the anode target if it produces an x-ray with an energy of 46 keV . The mass of the electron is 9.1 x10-31 kg. IM M Hint: How is the energy of x-rays related to the KE of the electrons? How is the kinetic energy related to the speed? X-rays cathode b) What is the accelerating potential of the x-ray tube (potental difference between the anode and cathode) in part a)? Va Ponder: How large is this volatge? Remember the a regular AA battery has a voltage of 1.5 V.arrow_forward
- A particle and its anti-particle have the same mass and charge, but the charges will be of opposite polarity. A particle and its anti-particle annihilate and produce two photons. The particle has kinetic energy 2.0 MeV collides head on with its anti-particle that is at rest. Find the energy and momentum of each photon. (Given the mass of each particle is 0.632MeV/c²) Select the correct answer choice: (a) E = 1.088 MeV E = 3.264 MeV (b) (c) (d) E = 1.632 MeV E = 1.088 MeV p=1.67 MeV/c p=1.183 MeV/c p=2.366 MeV/c p=0.835 MeV/carrow_forwardA positron with a kinetic energy of 2.000MeV collides with an electron at rest and the two particles are annihilated. Two photons are produced; one moves in the same direction as the incoming positron and the other moves in the opposite direction. Find the energies of the photons.arrow_forward1) Proton-beam therapy can be preferable to X rays for cancer treatmentbecause protons deliver most of their energy to the tumor, with less damage to healthytissue. A medical cyclotron repeatedly passes the protons through a 15 kV potentialdifference. (a) How many passes are needed to bring the protons’ kinetic energy to 1.2×10−11J? (b) What’s that energy in eV?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
University Physics Volume 3PhysicsISBN:9781938168185Author:William Moebs, Jeff SannyPublisher:OpenStax
University Physics Volume 3
Physics
ISBN:9781938168185
Author:William Moebs, Jeff Sanny
Publisher:OpenStax