비의류제품

direct observation of hot-electron spectra from laser-excited sodium vapor

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 500
a sodium atomic beam with density 10/sup 13/ cm/sup -3/ was illuminated by cw dye laser radiation (a few watts per square centimeter) tuned to the d/sub 2/ resonance line. in the energy spectrum of the emitted electrons, several lines were observed between 4 and 7 ev. their positions and intensities indicate that seed electrons are produced either via associative ionization or via collisional ionization from excited states populated by energy-pooling collisions. these electrons are then heated through successive superelastic collisions with excited 3p atoms
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