Estimate the ratio of the rate of stimulated to spontaneous emission at three wavelengths: (a) 12 cm, in the microwave (b) 5x10-4 cm, in the mid-infrared, and (c) 7x10-5 cm, in the ultraviolet. Assume a blackbody source (see Hollas p. 39) at 300 K. (d) Discuss the implications of the results determined in parts (a)-(c) for the following applications: fluorescence spectroscopy, excited state lifetime measurements (the lifetime of the excited state is inversely proportional to the Anm coefficient), and lasers (hint: what does it stand for
Answers: 1
Physics, 22.06.2019 08:30
You win the lottery and decide to impress your friends by exhibiting a million-dollar cube of gold. at the time, gold is selling for $ 426.60 per troy ounce, and 1.0000 troy ounce equals 31.1035 g. -how tall would your million-dollar cube be? en cm
Answers: 2
Physics, 22.06.2019 11:10
Which situation will produce the greatest change of momentum
Answers: 2
Physics, 22.06.2019 15:30
The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?
Answers: 2
Estimate the ratio of the rate of stimulated to spontaneous emission at three wavelengths: (a) 12 cm...
English, 27.08.2019 19:00
History, 27.08.2019 19:00
Mathematics, 27.08.2019 19:00
Biology, 27.08.2019 19:00
English, 27.08.2019 19:00
Mathematics, 27.08.2019 19:00
Arts, 27.08.2019 19:00
History, 27.08.2019 19:00
English, 27.08.2019 19:00
History, 27.08.2019 19:00
Mathematics, 27.08.2019 19:00
English, 27.08.2019 19:00