Accession Number : ADA138299

Title :   Crossed Molecular Beam Studies of the Reactions of Oxygen and Fluorine Atoms.

Descriptive Note : Annual rept. 22 Nov 82-31 Dec 83,


Personal Author(s) : Lee,Y T

PDF Url : ADA138299

Report Date : 15 Feb 1984

Pagination or Media Count : 10

Abstract : This report describes the construction of an advanced, high-resolution, photofragmentation-translation spectrometer. The major features of the machine are as follows. It is capable of measuring the differential, cross-section and translational-energy distributions of collisionless, photochemical events. It has a rotating, molecular-beam source and a fixed detector. This allows extreme temperatures in the bakeout process which will give very low background in the detector. The detector is an advanced design, electron-impact ionization, quadrupole mass-spectrometer. The pumping system uses cryopumping and turbomolecular pumps. This will increase the pumping speed for hydrocarbons and allow the low background detection of hydrocarbon masses. The purpose of this machine is to measure the product translational-energy distributions of photochemical processes, especially the photodecomposition of rocket fuel prototypes, so called 'energetic materials'. The low vapor pressure of these substances requires an efficient detector with a low background at hydrocarbon masses. (Author)

Descriptors :   *Polyatomic molecules, *Photodissociation, *Cross beam devices, Fluorine, Oxygen, Chemical reactions, Photofragment spectroscopy, Molecular beams, Energetic properties, Dynamics, Decay, Photochemical reactions, Mass spectrometers, Energy, Distribution, Photodecomposition, Rocket fuels, Prototypes

Subject Categories : Radiation and Nuclear Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE