ISSN:
1572-8986
Keywords:
Nitrogen afterglow
;
microwave discharge
;
nitrogen atom concentration
;
metastable nitrogen molecule concentration
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Technology
Notes:
Abstract Measurements of nitrogen atom density, by means of NO chemical titration, along with an evaluation of the densities of some excited species N 2 (B, v=11), N 2 (B, v=2), N 2 (C, v=0), and N 2 + (B,v=0), by means of a spectroscopic study of some bands of dinitrogen, are achieved along the flowing afterglow of a dinitrogen microwave plasma (2450 MHz) for several pressures. The concentrations obtained are in the following range: [N]∼10 +15 , [N 2 (B, 2)]∼10 +9 –10 +10 , [N 2 (B, 11)]∼10 +8 –10 +9 , [N 2 (C, 0)]∼10 +6 –10 +7 , [N 2 + (B,0)]∼10 +6 -10 +8 (cm-3). From a kinetic study of the formation and decay of excited and charged species, an estimation of N 2 (A, v), N 2 (X, v, and N 2 + (X) densities can be derived: [N 2 (A, v)]∼10 +12 , [N 2 (X, v≥6)]∼10 +15 –10 +16 , [N 2 (X, v≥12)]∼10 +14 –10 +15 , [N 2 + (X)]∼10 +10 (cm -3 ).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1021855131761
Permalink
