A Microcomputer System for Time Varying Optical Absorption Measurements

The rate coefficients of the chemi-ionization collisions between Ar 3 P 2,1,0 and Hg 1 S 0 atoms are determined by optical absorption and probe measurements in decaying plasma. Th e corresponding cross section values at room temperature are as follows: σ i (Ar 3 P 2 /Hg) = (98 ± 35) Å2 , σ i (Ar 3 P 1 /Hg) = (103 ± 36) Å2 and σ i (Ar 3 P 0 /Hg) = (192 ± 67) Å2 . These values are compared with the close-collision cross sections and the cross sections calculated by the optical model of interaction.

Section: Methodsmentioning

confidence: 99%

Chemi-ionization of ground-state Hg atoms by excited Ar atoms

Karov

Rusinov

Blagoev

1997

Excitation transfer between the first neon triplet levels

Pilosof¹,

Blagoev²

1988

The temperature dependences of the rate coefficients for electron-impact-induced transitions between 33P2,,,, neon levels are determined. The rate coefficients for the transitions 3P,+-'Pi ( i , j = O , 1, 2; i + j ) are K,, = k , , exp(-lE,JkT,), where !ill = ~1.25=0.17)x10-'cm3s-', k Z , = ( 1 . 7 ~l . j ) x 1 0 -8 c m 3 s ~' and k , , , = ( 4 . 4 = 2 . 4 3 ~1 0 -~ cm3 s-' at electron temperatures in the range 400-4000 K.

Diffusion of ground state (3s²¹S₀) and metastable (3s3p³P_0,1,2) magnesium atoms in He and Ne

Redko

Rusinov

Blagoev

1993

The momentum transfer cross sections and the diffusion coefficients of ground state and metastable magnesium atoms in He (300-3000 K) and Ne (300-2800 K) are calculated. The measured diffusion coefficient of ground state Mg in He, D=340+or-27 cm2 s-1 for 1 Torr, which is determined at 300 K in this work, as well as all other experimental results at higher temperatures agree well with the calculations.