Electronic energy partitioning in the reactions of metastable Mg*(3P) and Ca*(3P,1D) atoms with halogenated methanes CX 4 (X = F, Cl, Br)

2005 ◽  
Author(s):  
B. Pranszke ◽  
P. Kierzkowski ◽  
A. Kowalski ◽  
M. Menzinger
Keyword(s):  
Electronic Energy ◽  
Energy Partitioning ◽  
Halogenated Methanes

Electronic Energy Partitioning in the Reactions of Metastable Mg*(3PJ) Atoms with F2, Cl2, Br2, I2, ICl, IBr

2000 ◽  
Vol 55 (3-4) ◽  
pp. 433-440
Author(s):  
P. Kierzkowski ◽  
B. Pranszke ◽  
A. Kowalski ◽  
M. Menzinger
Keyword(s):  
Information Theory ◽  
Cross Sections ◽  
Electronic Energy ◽  
Energy Partitioning ◽  
Entrance Channel ◽  
Quantum Yields ◽  
Total Attenuation

Abstract Chemiluminescent reactions of metastable Mg*(3PJ) atoms with F2 , Cl2 , Br2 , I2 , IC1, IBr molecules were studied in a beam-gas experiment. For all homonuclear targets the MgX(A 2Π -X 2Σ+) emission was observed, but for IC1 and IBr reactants the Mgl(A-X) emission was absent and only MgCl(A-X) or MgBr(A-X) spectra were found. In addition, for the I2 , IBr, IC1, Br2 reactions, broad pseudocontinua extend from above 400 nm into the infrared. These pseudocontinua are ten-tatively attributed to the Mgl, MgBr (B' 2Σ+ -X2Σ+) transition. The total attenuation cross sections, chemiluminescence cross sections and quantum yields were measured. The quantum yields are all below 5%. The results are analyzed using information theory. The low yields for the Mg* + F2 system are explained by a barrier in the entrance channel. For other reactions the low yields are most probably caused by predissociation of the MgX*(A 2Π) products

The electronic energy spectrum of zero-gap semiconductors

1976 ◽  
Vol 120 (11) ◽  
pp. 337 ◽  
Author(s):  
B.L. Gel'mont ◽  
V.I. Ivanov-Omskii ◽  
I.M. Tsidil'kovskii
Keyword(s):  
Energy Spectrum ◽  
Electronic Energy ◽  
Electronic Energy Spectrum
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