Excitation transfer between upper Se + levels in a positive column He-Se + laser

Autor:	Nikola V. Sabotinov, G. T. Todorov, P. R. Karavassilev, P. K. Telbizov
Rok vydání:	1997
Předmět:	Physics Free electron model chemistry.chemical_element Laser Atomic and Molecular Physics and Optics law.invention Ion chemistry law Excited state Spontaneous emission Atomic physics Helium Excitation Intensity (heat transfer)
Zdroj:	Zeitschrift f�r Physik D Atoms, Molecules and Clusters. 39:251-255
ISSN:	1431-5866 0178-7683
DOI:	10.1007/s004600050134
Popis:	The rate coefficients for collision induced transitions from a laser level to neighboring levels of active medium particles are theoretically connected with the intensity of the spontaneous emission originating from these levels and its variation due to 100% modulation of the laser oscillation. The levels pertaining to the configuration 4s 2 4p 2(2 P)5p of Se2 are explored at conditions of operation of a positive column He-Se+ laser. Normalized population transfer rate coefficients are defined. Their values are obtained based on the measured spontaneous emission intensity and its variation. The dominating partners for the mixing collisions with excited selenium ions are suggested as Se+, Se and He+ in contrast with the free electrons and helium atoms.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8c029c369e392c0e7a9fac5d5f272674 https://doi.org/10.1007/s004600050134 Zobrazit plný text záznamu Full text from SpringerLink