Accession Number:

AD0680671

Title:

RADIATIVE LIFETIMES IN THE RESONANCE SERIES OF Ar I.

Descriptive Note:

Research Communication no. 70,

Corporate Author:

DOUGLAS AIRCRAFT CO INC HUNTINGTON BEACH CALIF ADVANCED RESEARCH LABS

Personal Author(s):

• Lawrence,George M.

Report Date:

1968-08-01

Pagination or Media Count:

25.0

Abstract:

Radiative lifetimes of the six lowest-energy J 1 levels of Ar I were measured with a pulsed electron technique. The wavelengths and measured lifetimes in nanoseconds are given. Estimates of branching ratios were made where necessary, and f-values for the above transitions are given. Lifetimes of cascading levels estimated with a two-exponential fit are consistent with known lifetimes of Ar I visible lines. Extrapolation to zero pressure to account for photon entrapment was made for lifetimes enlarged less than 30 percent. Author

Descriptors:

• (*ARGON
• ATOMIC ENERGY LEVELS)
• (*ATOMIC ENERGY LEVELS
• RELAXATION TIME)
• NUCLEAR RESONANCE
• SELECTION RULES(PHYSICS)
• EXCITATION
• INTERACTIONS
• ELECTRON IRRADIATION
• TABLES(DATA)

Subject Categories:

• Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE