Physics · Atomic and Molecular Physics
Consider a laser cooling experiment where atoms are slowed down by an inelastic process of absorption and subsequent isotropic emission of photons. If light of wavelength 776.5 nm is used to slow down potassium atoms (mass number 39) with an initial speed of 130 m/s, the number of such absorption and emission cycles needed to bring the atoms to rest is closest to:
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104
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