A study of M center formation in additively colored KCl

Journal Article · Tue Oct 01 04:00:00 EDT 1963 · European Physical Journal. A

DOI:https://doi.org/10.1007/BF01377876· OSTI ID:4723022

Delbecq, Charles J.

Additively colored crystals of KCl were cooled rapidly from a high temperature and then exposed to light absorbed by the F band. The rate of growth of the M band was initially low and increased markedly during the first part of the irradiation giving rise to what is called a delay period'' in the M center formation. During this delay period it was observed that the quantum efficiency of F center fluorescence decreases by a factor of 3 or 4, and the ability to convert F centers to F' centers is reduced by about a factor of 3. These effects are interpreted as arising because of an appreciable decrease in the average nearest neighbor F center separation during this period. Results are also presented concerning the kinetics of M center formation, oscillator strengths of the M center transitions, the degree of polarization of the M center fluorescence, and the transfer of energy from an excited F center to an M center.

• Research Organization: Argonne National Lab., Ill.; and Technische Hochschule, Stuttgart
• Sponsoring Organization: USDOE
• NSA Number: NSA-17-010653
• OSTI ID: 4723022
• Report Number(s): TID-17106; UAC-6784
• Journal Information: European Physical Journal. A, Journal Name: European Physical Journal. A Journal Issue: 3 Vol. 171; ISSN 1434-6001
• Publisher: Springer
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CHEMISTRY
F CENTERS
LATTICES
M CENTERS
VACANCIES