A Vacuum Ultraviolet, Supersonic Jet Absorption Spectrometer

$29.00 plus tax (Refund Policy)

Buy Article:

Abstract:

A technique for recording high-resolution, broadly tunable absorption spectra in the ultraviolet (UV) and vacuum ultraviolet (VUV) is described. A supersonic expansion is used to prepare molecules in a rovibrationally cold distribution of states, and a dispersed broad-band deuterium (D2) lamp is used for excitation. The attenuation of light due to absorption is measured with the use of dual gate detection during pulsed valve-on and valve-off periods. The VUV light beam, after crossing the supersonic expansion, is frequency down-converted with a scintillator-coated exit window, and the resulting light intensity is measured by boxcar integration or photon counting. A simple sample delivery system and complete software control of the experiment make this system a routine laboratory spectrometer. Sensitivity and resolution are discussed, and the device is demonstrated for the molecules NH3 and CH3I.

Keywords: Direct absorption; Molecular beam; Supersonic expansion; VUV

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702914337146

Affiliations: Aerophysics Laboratory, The Aerospace Corporation, P. O. Box 92957, Los Angeles, California 90009

Publication date: March 1, 1991

More about this publication?
Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more