Vacuum Ultraviolet Absorption Measurements of Atomic Oxygen in a Shock Tube (Paperback)

The absorption of vacuum ultraviolet light by atomic oxygen has been measured in the Electric Arc-driven Shock Tube (EAST) Facility at NASA-Ames Research Center. This investigation demonstrates the instrumentation required to determine atomic oxygen concentrations from absorption measurements in impulse facilities. A shock wave dissociates molecular oxygen, producing a high temperature sample of atomic oxygen in the shock tube. A probe beam is generated with a Raman-shifted ArF excimer laser. By suitable tuning of the laser, absorption is measured over a range of wavelengths in the region of the atomic line at 130.49 nm. The line shape function is determined from measurements at atomic oxygen densities of 3 x 10(exp 17) and 9 x 10(exp 17) cm(exp -3). The broadening coefficient for resonance interactions is deduced from this data, and this value is in accord with available theoretical models.

General

Imprint:	Biblioscholar
Country of origin:	United States
Release date:	March 2013
First published:	March 2013
Creators:	National Aeronautics and Space Administr
Authors:	Scott Andrew Meyer
Dimensions:	246 x 189 x 8mm (L x W x T)
Format:	Paperback - Trade
Pages:	144
ISBN-13:	978-1-288-91617-7
Categories:	Books > Social sciences > Education > General
LSN:	1-288-91617-5
Barcode:	9781288916177

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