Dissociative excitation of CH4 by electron impact: Emission cross sections for the fragment species

1996 ◽  
Vol 213 (1-3) ◽  
pp. 369-384 ◽  
Author(s):  
K. Motohashi ◽  
H. Soshi ◽  
M. Ukai ◽  
S. Tsurubuchi
Keyword(s):  
Electron Impact ◽  
Cross Sections ◽  
Dissociative Excitation

Dissociative excitation of CF4 by controlled electron impact

1989 ◽  
Vol 67 (7) ◽  
pp. 699-705 ◽  
Author(s):  
S. Wang ◽  
J. L. Forand ◽  
J. W. McConkey
Keyword(s):  
Energy Range ◽  
Emission Spectrum ◽  
Electron Impact ◽  
Cross Sections ◽  
Incident Energy ◽  
Dissociative Excitation ◽  
Excitation Mechanism ◽  
Excitation Functions ◽  
Single Collision

Dissociative excitation of CF4 by electron impact has been studied under single-collision conditions for incident energies up to 600 eV. The emission spectrum in the range 50–130 nm shows many features arising from neutral and singly ionized fluorine and carbon fragments. Absolute cross sections for the observed features were measured at 200 eV incident energy, while the excitation functions of the most intense emissions were studied over the whole energy range. Cascade was shown to be the dominant excitation mechanism for some of these features.

Measurement of absolute electron-impact excitation cross sections in Ar and N2 using H and H2 emissions as secondary standards

1988 ◽  
Vol 66 (4) ◽  
pp. 349-357 ◽  
Author(s):  
J. L. Forand ◽  
S. Wang ◽  
J. M. Woolsey ◽  
J. W. McConkey
Keyword(s):  
Electron Impact ◽  
Cross Section ◽  
Cross Sections ◽  
Emission Cross Section ◽  
Impact Excitation ◽  
Electron Impact Excitation ◽  
Dissociative Excitation ◽  
Excitation Cross Sections ◽  
Line Following ◽  
Good Agreement

A detailed description is given of a technique in which emissions from H and H2 are used to calibrate an apparatus used for electron-impact emission cross-section measurements in the wavelength range 90–130 nm. Absolute emission cross sections have been measured at 200 eV electron-impact energy for the 120 nm N I line following dissociative excitation of N2 and for the Ar and Ar+ lines at 104.8, 106.7, 92.0, and 93.8 nm respectively. Good agreement with earlier works is obtained in the case of the N I line when earlier data are renormalized to take into account the recent revision of the cross section for production of Lyman α from H2. Measurements of the 104.8 and 106.7 nm lines suggest a 40% cascade component for the latter line at energies of 200 eV and above.

Dissociative excitation of SF6 by controlled electron impact

1986 ◽  
Vol 64 (3) ◽  
pp. 269-276 ◽  
Author(s):  
J. L. Forand ◽  
K. Becker ◽  
J. W. McConkey
Keyword(s):  
Emission Spectrum ◽  
Electron Impact ◽  
Spectral Range ◽  
Cross Sections ◽  
Dissociative Excitation ◽  
Excitation Functions ◽  
Single Collision

Dissociative excitation of SF6 by electron impact has been studied under single-collision conditions for incident energies up to 600 eV. The emission spectrum in the spectral range 450–1850 Å shows many features arising from neutral and singly ionized fluorine and sulphur fragments. Absolute cross sections for many of the emissions were measured, and excitation functions and appearance potentials were determined for selected features from each of the four systems. The largest cross sections were found for the FI transitions at 955 Å (2.3 × 10−18 cm2) and 975 Å (1.7 × 10−18 cm2).

Dissociative excitation of SiH4 by electron impact: Emission cross sections for the hydrogen Lyman series

1991 ◽  
Vol 155 (3) ◽  
pp. 401-406 ◽  
Author(s):  
S. Tsurubuchi ◽  
K. Motohashi ◽  
S. Matsuoka ◽  
T. Arikawa
Keyword(s):  
Electron Impact ◽  
Cross Sections ◽  
Dissociative Excitation

Emission Cross Sections of the Fragments in Dissociative Excitation of Germane by Electron Impact

1989 ◽  
Vol 28 (Part 1, No. 8) ◽  
pp. 1491-1496 ◽  
Author(s):  
Kyaw Tint ◽  
Akihiro Kono ◽  
Toshio Goto
Keyword(s):  
Electron Impact ◽  
Cross Sections ◽  
Dissociative Excitation

scholarly journals Electron Induced Emission of Nitrous Oxide in the UV-VIS Spectral Range

2020 ◽  
Vol 7 (2) ◽  
pp. 36-42
Author(s):  
Juraj Országh ◽  
Marián Danko ◽  
Štefan Matejčík
Keyword(s):  
Nitrous Oxide ◽  
Electron Impact ◽  
Cross Sections ◽  
Optical Emission ◽  
Molecular Beams ◽  
Impact Excitation ◽  
Electron Impact Excitation ◽  
Dissociative Excitation ◽  
Optical Emission Spectrum ◽  
First Time

The electron impact excitation of N2O was studied using the crossed electron-molecular beams method. Optical emission spectrum initiated by 50 eV electron impact was recorded within the range 200-700 nm. Main emission bands arise from excited ion state N2O+(A2Σ) and dissociative excitation into N2+(B2Σ+u). The rotationally un-resolved excitation-emission cross sections for selected ion transitions were scaled to absolute values and their dependence on electron energy was determined. Several of them were determined for the first time.

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