Accession Number : ADA131601

Title :   Experimental Study of Dissociative Attachment in Optically-Pumped Lithium Molecules.

Descriptive Note : Final rept. 1 May 82-30 Apr 83,

Corporate Author : AVCO EVERETT RESEARCH LAB INC EVERETT MA

Personal Author(s) : McGeoch,Malcolm W ; Schlier,Robert E

PDF Url : ADA131601

Report Date : May 1983

Pagination or Media Count : 72

Abstract : Details are presented of an experimental study which has as its goal the observation of lithium negative ions by the process of dissociative attachment in optically-pumped lithium dimer molecules. A description is given of a new lithium supersonic beam apparatus with a slit nozzle and gravitational recirculation of the molten lithium. The source operates up to 900 degrees C and yields a lithium density of 3/1 x 10 to the 14th power cm at 10 cm downstream from the slit. The beam density is modelled as a function of spatial coordinates. Two- and three-step photoionization of lithium dimers and lithium atoms has been performed using multiple, tunable nitrogen-pumped dye lasers. An electron density of up to 3/10 to the 10th power cm has been created in the beam.

Descriptors :   *Ion beams, *Optical pumping, *Lithium, *Molecules, *Dye lasers, Electron density, Attachment, Dissociation, Atoms, Melts, Spatial distribution, Nozzles

Subject Categories : Optics
      Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE