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Il Nuovo Cimento D

, Volume 1, Issue 1, pp 49–69 | Cite as

Rosonant laser excitation of potassium vapour: Experimental investigation of energy-pooling collisions and plasma production

  • M. Allegrini
  • S. Gozzini
  • I. Longo
  • P. Savino
  • P. Bicchi
Article

Summary

The illumination of potassium vapour by means of a c.w. dye-laser resonant with the fundamental 4S→4P transitions results in the excitation of high-lying atomic and molecular states. In the present paper we report a spectroscopic study of this phenomenon and experimental evidence that the mechanisms responsible for the population of some of the levels not directly excited by the laser involve the creation of a plasma in the vapour.

Keywords

Laser Intensity Laser Power Density Plasma Production Potassium Atom Transmission Cell 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Riassunto

Quando vapori di potassio sono illuminati dalla luce di un laser a colorante risonante con la transizione fondamentale 4S→4P, si osservano transizioni sia da livelli atomici molto alti, sia dalivelli molecolari. In questo articolo si descrive uno studio spettroscopico di questi fenomeni e si dà la prova sperimentale che il meccanismo responsabile della popolazione di alcuni dei livelli non direttamente eccitati dal laser richiede la creazione di un plasma nel vapore.

Резюме

Обпучение паров калия лазером на красителях с основными переходами 4S→4P приводит к возбуждению высоколежащих атомных и молекулярных состояний. В этой работе мы сообщаем резулбтаты спектроскопических исследований этого явления и экспериментальное подтверждение, что механизм, ответственный за заселение некоторых уровней, в результате не прямого возбуждения лазером, включает образование плазмы в паре.

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Copyright information

© Società Italiana di Fisica 1982

Authors and Affiliations

  • M. Allegrini
    • 1
  • S. Gozzini
    • 1
  • I. Longo
    • 1
  • P. Savino
    • 1
  • P. Bicchi
    • 1
    • 2
  1. 1.Istituto di Fisica Atomica e Molecolare del C.N.R.PisaItalia
  2. 2.Istituto di Fisica dell'UniversitàSienaItalia

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