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Sensitized fluorescence in thallium induced in collisions with Hg(6/sup 3/P/sub 1/) atoms

Abstract

The transfer of excitation from excited mercury atoms to ground-state thallium atoms was investigated using techniques of sensitized fluorescence. A Hg-Tl vapor mixture contained in a quartz cell was irradiated with Hg 2537 A resonance radiation which caused the mercury atoms to become excited to the 6/sup 3/P/sub 1/ state. Subsequent collisions between the Hg(6/sup 3/P/sub 1/) and Tl(6/sup 2/Psub(1/2)) atoms resulted in the population of the 8/sup 2/Ssub(1/2), 6/sup 2/D, and 7/sup 2/Ssub(1/2) thallium states, whose decay gave rise to sensitized fluorescence of wavelengths 3231, 3520, 3776, and 5352 A. Intensity measurements on the sensitized fluorescence and on the Hg 2537 A resonance fluorescence, observed at right angles to the direction of excitation, yielded cross sections of 3.0, 0.3, and 0.05 A/sup 2/ for collisional excitation transfer from Hg(6/sup 3/P/sub 1/) to the 8/sup 2/Ssub(1/2), 6/sup 2/D, and 7/sup 2/Ssub(1/2) states in thallium, respectively. The results are fully consistent with previously determined cross sections for excitation transfer in other binary metallic vapor systems.
Authors:
Wade, M K; Czajkowski, M; Krause, L [1] 
  1. Windsor Univ., Ontario (Canada). Dept. of Physics
Publication Date:
Jul 01, 1978
Product Type:
Journal Article
Reference Number:
AIX-09-409264; EDB-79-015445
Resource Relation:
Journal Name: Can. J. Phys.; (Canada); Journal Volume: 56:7
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; MERCURY; ATOM-ATOM COLLISIONS; THALLIUM; CROSS SECTIONS; D STATES; EXCITATION; FLUORESCENCE; S STATES; ATOM COLLISIONS; COLLISIONS; ELEMENTS; ENERGY LEVELS; ENERGY-LEVEL TRANSITIONS; LUMINESCENCE; METALS; 640304* - Atomic, Molecular & Chemical Physics- Collision Phenomena
OSTI ID:
6565124
Country of Origin:
Canada
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: CJPHA
Submitting Site:
INIS
Size:
Pages: 891-896
Announcement Date:
Nov 01, 1978

Citation Formats

Wade, M K, Czajkowski, M, and Krause, L. Sensitized fluorescence in thallium induced in collisions with Hg(6/sup 3/P/sub 1/) atoms. Canada: N. p., 1978. Web.
Wade, M K, Czajkowski, M, & Krause, L. Sensitized fluorescence in thallium induced in collisions with Hg(6/sup 3/P/sub 1/) atoms. Canada.
Wade, M K, Czajkowski, M, and Krause, L. 1978. "Sensitized fluorescence in thallium induced in collisions with Hg(6/sup 3/P/sub 1/) atoms." Canada.
@misc{etde_6565124,
title = {Sensitized fluorescence in thallium induced in collisions with Hg(6/sup 3/P/sub 1/) atoms}
author = {Wade, M K, Czajkowski, M, and Krause, L}
abstractNote = {The transfer of excitation from excited mercury atoms to ground-state thallium atoms was investigated using techniques of sensitized fluorescence. A Hg-Tl vapor mixture contained in a quartz cell was irradiated with Hg 2537 A resonance radiation which caused the mercury atoms to become excited to the 6/sup 3/P/sub 1/ state. Subsequent collisions between the Hg(6/sup 3/P/sub 1/) and Tl(6/sup 2/Psub(1/2)) atoms resulted in the population of the 8/sup 2/Ssub(1/2), 6/sup 2/D, and 7/sup 2/Ssub(1/2) thallium states, whose decay gave rise to sensitized fluorescence of wavelengths 3231, 3520, 3776, and 5352 A. Intensity measurements on the sensitized fluorescence and on the Hg 2537 A resonance fluorescence, observed at right angles to the direction of excitation, yielded cross sections of 3.0, 0.3, and 0.05 A/sup 2/ for collisional excitation transfer from Hg(6/sup 3/P/sub 1/) to the 8/sup 2/Ssub(1/2), 6/sup 2/D, and 7/sup 2/Ssub(1/2) states in thallium, respectively. The results are fully consistent with previously determined cross sections for excitation transfer in other binary metallic vapor systems.}
journal = []
volume = {56:7}
journal type = {AC}
place = {Canada}
year = {1978}
month = {Jul}
}