Fundamentals of Physics, Volume 1, Chapter 1-20
10th Edition
ISBN: 9781118233764
Author: David Halliday
Publisher: WILEY
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Chapter 40, Problem 59P
To determine
To calculate:
the energy per photon that stimulated emission of B.
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59 o Figure 40-24 shows the energy levels of two types of
atoms. Atoms A are in one tube, and atoms B are in another tube.
The energies (relative to a ground-state energy of zero) are
indicated; the average lifetime of atoms in each level is also indi-
cated. All the atoms are initially pumped to levels higher than the
levels shown in the figure. The atoms then drop down through the
levels, and many become "stuck" on certain levels, leading to popu-
lation inversion and lasing. The light emitted by A illuminates B
and can cause stimulated emission of B. What is the energy per
photon of that stimulated emission of B?
11.5 eV, 3 ms
10.8 ev, 3 ms
9.5 eV, 3 ms
6.9 eV, 3 ms
7.8 eV, 3 us
6.1 ev, 3 us
6.2 eV, 3 us
4.2 eV, 3 ms
5.4 eV, 3 ms
3.9 ev, 3 us
3.7 eV, 3 us
B.
Figure 40-24 Problem 59.
|I||
A system has N weakly interacting identical particles. Each particle has 2 energy levels that are 0 and α. Using ni=Ae^−εi/kT
What is the energy U of this system at a given temperature T? What is the value of energy as T→∞, and T→0?
=
=
Imagine that we have a box that emits electrons in a definite but unknown spin state y). If
we send electrons from this box through an SGz device, we find that 20% are determined to
have Sz
+ħ and 80% to have S₂ -ħ. If we send electrons from this box through an
SGx device, we find that 90% are determined to have Sx +ħ and 10% to have Sx
Determine the state vector for electrons emerging from the box. You may assume that the
vector components are real.
-1/ħ.
=
-
Chapter 40 Solutions
Fundamentals of Physics, Volume 1, Chapter 1-20
Ch. 40 - Prob. 1QCh. 40 - Prob. 2QCh. 40 - Prob. 3QCh. 40 - Prob. 4QCh. 40 - Prob. 5QCh. 40 - Prob. 6QCh. 40 - Prob. 7QCh. 40 - Figure 40-22 shows three points at which a spin-up...Ch. 40 - Prob. 9QCh. 40 - Prob. 10Q
Ch. 40 - Prob. 11QCh. 40 - Prob. 12QCh. 40 - Prob. 13QCh. 40 - Prob. 14QCh. 40 - Prob. 1PCh. 40 - Prob. 2PCh. 40 - Prob. 3PCh. 40 - Prob. 4PCh. 40 - Prob. 5PCh. 40 - Prob. 6PCh. 40 - Prob. 7PCh. 40 - Prob. 8PCh. 40 - Prob. 9PCh. 40 - Prob. 10PCh. 40 - Prob. 11PCh. 40 - Prob. 12PCh. 40 - SSM What is the acceleration of a silver atom as...Ch. 40 - Prob. 14PCh. 40 - Prob. 15PCh. 40 - Assume that in the SternGerlach experiment as...Ch. 40 - Prob. 17PCh. 40 - Prob. 18PCh. 40 - Prob. 19PCh. 40 - Prob. 20PCh. 40 - Prob. 21PCh. 40 - Prob. 22PCh. 40 - Prob. 23PCh. 40 - Prob. 24PCh. 40 - Prob. 25PCh. 40 - Prob. 26PCh. 40 - Prob. 27PCh. 40 - Show that the number of states with the same...Ch. 40 - Prob. 29PCh. 40 - For a helium atom in its ground state, what are...Ch. 40 - Prob. 31PCh. 40 - Prob. 32PCh. 40 - Prob. 33PCh. 40 - Prob. 34PCh. 40 - Prob. 35PCh. 40 - Prob. 36PCh. 40 - Prob. 37PCh. 40 - Prob. 38PCh. 40 - Prob. 39PCh. 40 - Prob. 40PCh. 40 - Prob. 41PCh. 40 - Prob. 42PCh. 40 - Prob. 43PCh. 40 - Prob. 44PCh. 40 - Prob. 45PCh. 40 - Prob. 46PCh. 40 - Prob. 47PCh. 40 - Prob. 48PCh. 40 - Prob. 49PCh. 40 - Prob. 50PCh. 40 - Prob. 51PCh. 40 - Prob. 52PCh. 40 - Prob. 53PCh. 40 - Prob. 54PCh. 40 - Prob. 55PCh. 40 - Prob. 56PCh. 40 - Prob. 57PCh. 40 - Prob. 58PCh. 40 - Prob. 59PCh. 40 - Prob. 60PCh. 40 - Prob. 61PCh. 40 - Prob. 62PCh. 40 - Prob. 63PCh. 40 - Prob. 64PCh. 40 - Prob. 65PCh. 40 - Prob. 66PCh. 40 - Prob. 67PCh. 40 - Prob. 68PCh. 40 - Prob. 69PCh. 40 - Prob. 70PCh. 40 - Prob. 71PCh. 40 - Prob. 72PCh. 40 - Prob. 73PCh. 40 - Prob. 74PCh. 40 - Prob. 75PCh. 40 - Prob. 76PCh. 40 - Prob. 77PCh. 40 - Prob. 78PCh. 40 - Prob. 79P
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