Negative ions and the role of metastable molecules in a capacitively coupled radiofrequency excited discharge in oxygen

2000 ◽  
Vol 9 (3) ◽  
pp. 323-330 ◽  
Author(s):  
H M Katsch ◽  
T Sturm ◽  
E Quandt ◽  
H F Döbele
Keyword(s):  
Negative Ions ◽  
Capacitively Coupled

scholarly journals Single-Photon Multiple Detachment in Fullerene Negative Ions: Absolute Ionization Cross Sections and the Role of the Extra Electron

2013 ◽  
Vol 111 (4) ◽  
Author(s):  
R. C. Bilodeau ◽  
N. D. Gibson ◽  
C. W. Walter ◽  
D. A. Esteves-Macaluso ◽  
S. Schippers ◽  
...  
Keyword(s):  
Cross Sections ◽  
Single Photon ◽  
Negative Ions ◽  
Ionization Cross ◽  
Extra Electron ◽  
Ionization Cross Sections

scholarly journals Some aspects of ion-acoustic whistlers in the ionosphere in the presence of negative ions

1989 ◽  
Vol 12 (4) ◽  
pp. 749-772 ◽  
Author(s):  
A. K. Sur ◽  
G. C. Das ◽  
B. Chakraborty ◽  
S. N. Paul ◽  
L. Debnath
Keyword(s):  
Travel Time ◽  
Critical Frequency ◽  
Cyclotron Frequency ◽  
Negative Ions ◽  
Induced Magnetic Field ◽  
Ion Acoustic ◽  
Phase And Group Velocities ◽  
Group Velocities ◽  
Group Travel

A study is made of the propagation of ion-acoustic whistlers in the atmosphere including the effects of negative ions. The dispersion relation, phase and group velocities of whistlers are discussed. It is shown that the presence of negative ions introduces a critical frequency which, for equal ionic masses, is equal to the ion-cyclotron frequency. Special attention is given to the group travel time of whistlers at mid-latitude and equator so that the role of negative ions on the group travel time can be determined. The cyclotron damping of whistlers in the presence of negative ions has been studied. The velocity distribution, total attenuation and the induced magnetic field are calculated from the temporal as well as spatial cyclotron damping. It is suggested that the attenuation of whistlers may cause heating of the ionosphere. It is also indicated that the measurement of the group travel time from its source to the observer at the satellite would help to diagnose the ionospheric parameters. The results of the analysis are presented by several graphical presentations.

The role of negative ions on the Jeans instability in a complex plasma in the presence of nonthermal positive ions

2006 ◽  
Vol 13 (10) ◽  
pp. 102904 ◽  
Author(s):  
Banamali Roy ◽  
Susmita Sarkar ◽  
Manoranjan Khan ◽  
M. R. Gupta
Keyword(s):  
Negative Ions ◽  
Complex Plasma ◽  
Positive Ions ◽  
Jeans Instability

Behavior of Electrons and Negative Ions in a Capacitively-Coupled Radio-Frequency NF3/Ar Plasma

1997 ◽  
Vol 36 (Part 1, No. 7B) ◽  
pp. 4651-4655 ◽  
Author(s):  
Toshiyasu Hayashi ◽  
Akihiro Kono ◽  
Toshio Goto
Keyword(s):  
Radio Frequency ◽  
Negative Ions ◽  
Capacitively Coupled ◽  
Ar Plasma

The role of negative ions in the growth of ionization and breakdown in N2O

Vacuum ◽  
1974 ◽  
Vol 24 (11-12) ◽  
pp. 609
Author(s):  
J. Dutton ◽  
F.M. Harris ◽  
D.B. Hughes
Keyword(s):  
Negative Ions

scholarly journals Role of Negative Ion Resonances in Electron Scattering from Atoms and Molecules

1999 ◽  
Vol 52 (3) ◽  
pp. 473 ◽  
Author(s):  
S. J. Buckman ◽  
D. T. Alle ◽  
M. J. Brennan ◽  
P. D. Burrow ◽  
J. C. Gibson ◽  
...  
Keyword(s):  
Electron Scattering ◽  
Cross Sections ◽  
Negative Ions ◽  
Negative Ion ◽  
Electron Correlations ◽  
Molecular Systems ◽  
Atoms And Molecules ◽  
Wide Range ◽  
Scattering Cross Sections

Transient negative ions (resonances) formed during the collision of an electron with an atom or molecule have been extensively studied for over thirty years. The continued interest in these states, both experimentally and theoretically, stems from the profound effects that they can have on electron scattering cross sections and the role that electron–electron correlations play in their formation and quasi-stability. A selective discussion of examples of such resonances, involving one, two and three excited electrons is given for a wide range of atomic and molecular systems.

Role of hydrogen in evolution of plasma parameters and dust growth in capacitively coupled dusty plasmas

2010 ◽  
Vol 97 (20) ◽  
pp. 201503 ◽  
Author(s):  
K. B. Chai ◽  
Wonho Choe ◽  
C. R. Seon ◽  
C. W. Chung
Keyword(s):  
Dusty Plasmas ◽  
Plasma Parameters ◽  
Capacitively Coupled
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