Accession Number:

ADA151849

Title:

Spectroscopic Studies of Lead Oxide in a Flow Tube.

Descriptive Note:

Master's thesis,

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s):

• Duray,J. P.

Report Date:

1984-12-03

Pagination or Media Count:

92.0

Abstract:

Chemiluminescent flame from lead oxide has been observed in a flow-tube reactor. The chemiluminescence was produced by the reaction of lead vapor with singlet delta oxygen, first electronically excited state of oxygen. Spectra was recorded using a monochromator and a photomultiplier tube PMT. The spectra was recorded using a monochromator and a photomultiplier tube PMT. The spectra was recorded from the PMT in the photon counting mode on a Signal Averager Model 4203 EGG PAR. The Signal Averager was operated in the multichannel scaling mode which records data in a histogram format. Analysis of the spectra led to assignments of electronic transitions from a, b, A, C, D, E to the ground state of PbO. Molecular constants were calculated from the combination of this data and previous data taken at the Air Force Institute of Technology. This thesis provides a table of molecular constants. The relative concentrations of excited Pb in the lead vapor were measured by using absorption spectroscopy techniques. The results were inconclusive because of light source stability problems. Originator-Supplied Keywords include Spectroscopy, Molecular constraints, Flow tube reactor.

Descriptors:

• *SPECTROSCOPY
• *CHEMILUMINESCENCE
• *LEAD OXIDES
• MOLECULES
• VAPORS
• EXCITATION
• THESES
• OXYGEN
• CONSTANTS
• GROUND STATE
• FLAMES
• ABSORPTION SPECTRA
• ELECTRON TRANSITIONS
• PHOTOMULTIPLIER TUBES
• MONOCHROMATORS

Subject Categories:

• Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE