Townsend 1.21: A certain photodetector can resolve the time of arrival of a photon to within 2. 108 s. Two of these detectors are used in an anticoincidence experiment, as described in Section 1.4. a. What is the maximum average rate of photon emission from the source if there is any hope of demonstrating anticoincidence? b. Assuming the source emits light of wavelength 550 nm, what is the power output of the source? PM, Coincidence Gate S counter РM, -W Figure 1.20 A schematic diagram of the anticoincidence experiment of Grangier et al The source S emits two photons in a cascade decay. Detection of the first photon is used to generate an electrical pulse which activates the two photomultipliers.

Townsend 1.21: A certain photodetector can resolve the time of arrival of a photon to within 2. 108 s. Two of these detectors are used in an anticoincidence experiment, as described in Section 1.4. a. What is the maximum average rate of photon emission from the source if there is any hope of demonstrating anticoincidence? b. Assuming the source emits light of wavelength 550 nm, what is the power output of the source? PM, Coincidence Gate S counter РM, -W Figure 1.20 A schematic diagram of the anticoincidence experiment of Grangier et al The source S emits two photons in a cascade decay. Detection of the first photon is used to generate an electrical pulse which activates the two photomultipliers.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

A particle of ionizing radiation creates 4400 ion pairs in the gas inside a Geiger tube as it passes through. What minimum energy (in ev) was deposited, if 40.0 eV is required to create each ion pair? eV Additional Materials
A Van de Graaff generator produces a 2 MeV beam of deuterons, which are heavy hydrogen nuclei containing one proton and one neutron. Is its electrostatic repulsion a factor in the stability of the has? explain.
DETAILS PREVIOUS ANSWERS OSCOLPHYS2016 29.8.P.078. (a) What is y for a for a proton having an energy of 1.14 Tev, produced by a particle accelerator? 1213.77 (b) Find Its momentum (in kg m/s). kg · m/s (c) What is the proton's wavelength (in m)? Additional Materials Reading Submit Assignment Save Assignment Progress
In passing through a material, y radiation ionizes via three main processes. Describe each of these. In each case over what energy range are they the dominant ionization process?
Consider the nuclear fusion reaction 3H+ 'He > 'H + 'He. Part A Compute the binding energy of the H. Express your answer in mega-electron volts to three significant figures. B = MeV Submit Previous Answers Request Answer Part B Compute the binding energy of the He. Express your answer in mega-electron volts to three significant figures. ? B = MeV Submit Previous Answers Request Answer Part C Compute the binding energy of the H. Express your answer in mega-electron volts to three significant figures. ? B = MeV Submit Request Answer Part D Compute the binding energy of the "He. Express your answer in mega-electron volts to three significant figures. B = MeV
1 For the Rutherford (Geiger and Marsden) experiment with 5.5 MeV alpha particles on a 1 um gold foil, and for the six angles (decades) between 10-5 and 10° rad, calculate the Rutherford differential cross section (DCS), dor/d2, (a) without and (b) with screening. Represent both results graphically and draw conclusions. Answer: The nonscreened DCS values vary between 1.7137x10-3 and 2.0273×10 23 cm? rad-' in the interval [10-5-1 rad]. The screening angle is 3.7 x 10-3 rad, and the corresponding screened DCS values vary between 9.3620 x 10-14 and 2.0273 x 10-23 cm² rad-'. The screening Xa cuts off the otherwise increasing DCS with decreasing angle, which remains practically constant below X
Now the energy of a neutrino is measured at a specific time. If the uncertainty in the time measurement is 2.31 x 10-24 seconds, what is the minimum uncertainty in the energy?
HW What is the Linear Energy Transfer resulting from the passage of a 0.1-MeV beta particle through standard air (where NZ=3.88x102º electron/cm² and I=8.6x10$ for air) use the relativity for the kinetic energy of electron
(11% Problem 15: Electromagnetic radiation having a wavelength of 17 um is classified as infrared Randomized Variables 17 um What is its frequency in hertz? Grade Summary Deductions Potential 09% 100% Submissions Attempts remaining (2% per attempt) detailed view tan sin) cotan atan cosO asin( acotan 7 8 HOME E 4 acos 5 6 sinh 1 2 3 cosh) tanh0 Degrees cotanh0 0 END Radians VOBACKSPACE CLEAR DE I give up! Submit Hint Feedback Hints: 0% deduction per hint. Hints remaining: 2 Feedback 0% deduction per feedback CO N
Applying x-rays for diagnosis or therapy requires a good understanding of the effects the radiation causes in biological tissue. A lead apron that would stop 3⁄4 of the radiation would already provide passable protection. Find thickness of the apron, if lead mass attenuation coefficient for a radiationsource with an energy of 140 keV is μm = 2.32 cm2/g. Density of lead ρ = 11.35 g/cm3
A radiation-enhanced nuclear weapon (or neutron bomb) can have a smaller total yield and still produce more prompt radiation than a conventional nuclear bomb. This allows the use of neutron bombs to kill nearby advancing enemy forces with radiation without blowing up your own forces with the blast. For a 0.500-kT radiation-enhanced weapon and a 1.00-kT conventional nuclear bomb: Compare the blast yields.
The intensity of radiation from. a radioactive source is 900mR at a distance of 20meters. At what distance willtheintensity of radiation be at 6.25mR