Question

The gap between valence and conduction bands in silicon is 1.12 eV. A nickel nucleus in an excited state emits a gammaray photon with wavelength 9.31 $\times$ 10$^-$$^4$ nm. How many electrons can be excited from the top of the valence band to the bottom of the conduction band by the absorption of this gamma ray?

Name: Problem 19, Chapter 42: University Physics with Modern Physics
Uploaded: 2019-06-23T23:50:30-08:00
Duration: 3 min 45 s
Channel: Zhuxi Luo
Description: The gap between valence and conduction bands in silicon is 1.12 eV. A nickel nucleus in an excited state emits a gammaray photon with wavelength 9.31 ×10^-^4 nm. How many electrons can be excited from the top of the valence band to the bottom of the conduction band by the absorption of this gamma ray?

   The gap between valence and conduction bands in silicon is 1.12 eV. A nickel nucleus in an excited state emits a gammaray photon with wavelength 9.31 $\times$ 10$^-$$^4$ nm. How many electrons can be excited from the top of the valence band to the bottom of the conduction band by the absorption of this gamma ray?

University Physics with Modern Physics

Hugh D. Young 14th Edition

Chapter 42, Problem 19

Instant Answer

Solved by Expert Zhuxi Luo

06/23/2019

Step 1

The energy of a photon is given by the equation $E = hf$, where $h$ is the Planck constant and $f$ is the frequency of the photon. However, we are given the wavelength $\lambda$ of the photon, not the frequency. We can use the relationship $f = \frac{c}{\lambda}$, Show more…

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The gap between valence and conduction bands in silicon is 1.12 eV. A nickel nucleus in an excited state emits a gammaray photon with wavelength 9.31 $\times$ 10$^-$$^4$ nm. How many electrons can be excited from the top of the valence band to the bottom of the conduction band by the absorption of this gamma ray?