Investigation of the neon 2p collisional excitation transfer processes via CW laser collisionally induced fluorescence

Autor:	I S Borthwick, D J Smith, R S Stewart, A M Paterson
Rok vydání:	2001
Předmět:	Physics Coupling chemistry.chemical_element Condensed Matter Physics Laser Fluorescence Atomic and Molecular Physics and Optics law.invention Neon chemistry law Torr Atom Atomic physics Collisional excitation Excitation
Zdroj:	Journal of Physics B: Atomic, Molecular and Optical Physics. 34:1815-1827
ISSN:	1361-6455 0953-4075
DOI:	10.1088/0953-4075/34/9/316
Popis:	We present a method for determining the 2p (in Paschen notation) collisional excitation transfer coefficients in noble gases using continuous-wave laser collisionally induced fluorescence (CW LCIF, i.e. fluorescence from an upper level which is not that of the laser transition). The technique requires isolation of the specific 2p coupling process under examination, whereby that process provides an important and quantifiable contribution to the LCIF. This is achieved by selecting appropriate laser excitation and LCIF transitions. For a neon discharge operating at pressures ranging from 1.5 to 8.0 Torr and currents from 1 to 10 mA, 2p coupling is by ground-state atom collisions and the largest coupling exists between adjacent states. We show that in certain cases excitation transfer plays an important role in the excited-state kinetics.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::16a0cb7e782663969212b2399326e23d https://doi.org/10.1088/0953-4075/34/9/316 Zobrazit plný text záznamu