   Chapter 31, Problem 1PE

Chapter
Section
Textbook Problem

The energy of 30.0 eV is required to ionize a molecule of the gas inside a Geiger tube, thereby producing an ion pair. Suppose a particle of ionizing radiation deposits 0.500 MeV of energy in this Geiger tube. What maximum number of ion pairs can it create?

To determine

The maximum number of ion pairs that can be created by a particle of ionizing radiation of energy 0.500 MeV

Explanation

Given info:

Energy of the ionizing radiation, E=0.500 MeV=5.00×105eV

Ionization energy of the gas, Ei=30.0 eV

Formula used:

The number n of ionizing pairs produced is given by,

n=EEi

Calculation:

Substitute the given values of the variables in the formula to calculate the number of ionizing pairs

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