A molecular beam scattering apparatus for surface chemiluminescence studies. Preliminary results for emission of excited K atoms.

Andersson, Dag R. (författare): Chalmers tekniska högskola,Chalmers University of Technology

Hellberg, Lars, 1960 (författare): Chalmers tekniska högskola,Chalmers University of Technology

Kasemo, Bengt Herbert, 1942 (författare): Chalmers tekniska högskola,Chalmers University of Technology

(creator_code:org_t)

Abstract Ämnesord

Stäng

A molecular beam scattering apparatus has been constructed for the study of surface chemiluminescence, i.e. the emission of light during a molecule-surface reaction. The apparatus consists of a beam forming stage designed for molecular and atomic chlorine, and a scattering chamber. The scattering chamber houses the sample, an alkali evaporation source, and a rotatable flange which holds the detectors; (i) the imaging optics of the photon detector, (ii) a mass spectrometer detector and (iii) a charged particle collector. The performance of the apparatus is demonstrated for a beam of chlorine molecules impinging on continuously evaporated or freshly evaporated potassium films. Intensity versus chlorine exposure and angular intensity distributions are presented for the K(4p ->4s) atomic line emission of the K+Cl$_2$ surface chemiluminescence spectrum.

Av författaren/redakt...: Andersson, Dag R ...; Hellberg, Lars, ...; Kasemo, Bengt He ...

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