Introduction To Health Physics
Introduction To Health Physics
5th Edition
ISBN: 9780071835275
Author: Johnson, Thomas E. (thomas Edward), Cember, Herman.
Publisher: Mcgraw-hill Education,
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Chapter 3, Problem 3.15P

(a)

To determine

The minimum velocity with which an electron is moving before it can ionizea Heatom.

(b)

To determine

The minimum wavelength of a photon in order that it ionizes the Helium atom.

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Protons are accelerated from rest by a potential difference of 3.80 kVkV and strike a metal target. A) If a proton produces one photon on impact, what is the minimum wavelength of the resulting xx rays? Express your answer in meters.   B) Find the minimum wavelength if 3.80 −keV−keV electrons are used instead? Express your answer in meters.
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