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- W1983181894 abstract "We report here measurements of two-body photoassociative ionization collisions between sodium atoms within an ultranarrow velocity class selected from a well-collimated, thermal atomic beam. Doppler-shifted excitation of the Na(3s${mathrm{}}^{2}$${mathit{S}}_{1/2}$;F=1)ensuremath{rightarrow}Na(5p${mathrm{}}^{2}$${mathit{P}}_{3/2}$) transition at 285 nm by a single-mode laser defines the narrow velocity class that subsequently populates the F=2 hyperfine level of the Na ground state by optical pumping. Probe laser beam excitation tuned near the Na(3s${mathrm{}}^{2}$${mathit{S}}_{1/2}$;F=2)ensuremath{rightarrow}Na(3p${mathrm{}}^{2}$${mathit{P}}_{3/2}$;F=3) transition produced photoassociative ionization with an average collision energy ${mathit{E}}_{mathit{K}}$ corresponding to a temperature of 5.3 mK (${mathit{E}}_{mathit{K}}$=3/2kT). We determine the rate constant for the process as a function of probe beam intensity and polarization." @default.
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- W1983181894 date "1995-01-01" @default.
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- W1983181894 title "Ultracold photoassociative ionization collisions in an atomic beam: Optical field intensity and polarization dependence of the rate constant" @default.
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- W1983181894 doi "https://doi.org/10.1103/physreva.51.r18" @default.
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