1 Electron collisions with a radical: NO ·. 2 Electron – Driven Chemistry - Outer space -...
-
Upload
grant-prew -
Category
Documents
-
view
219 -
download
0
Transcript of 1 Electron collisions with a radical: NO ·. 2 Electron – Driven Chemistry - Outer space -...
![Page 1: 1 Electron collisions with a radical: NO ·. 2 Electron – Driven Chemistry - Outer space - Ionosphere: northern light etc. - Industrial plasmas - semiconductor.](https://reader036.fdocuments.in/reader036/viewer/2022062511/551c099d550346a34f8b5039/html5/thumbnails/1.jpg)
1
Electron collisions with a radical:
NO·
![Page 2: 1 Electron collisions with a radical: NO ·. 2 Electron – Driven Chemistry - Outer space - Ionosphere: northern light etc. - Industrial plasmas - semiconductor.](https://reader036.fdocuments.in/reader036/viewer/2022062511/551c099d550346a34f8b5039/html5/thumbnails/2.jpg)
2
Electron – Driven Chemistry- Outer space
- Ionosphere: northern light etc.
- Industrial plasmas- semiconductor manufacture
- flat displays- plasma displays- LCD display manufacture- back-lighting: Xe excimer
- surface modification- hydrophilic- hydrophobic- shrink-proof wool- milk packaging- …
- waste disposal- satellite engines
![Page 3: 1 Electron collisions with a radical: NO ·. 2 Electron – Driven Chemistry - Outer space - Ionosphere: northern light etc. - Industrial plasmas - semiconductor.](https://reader036.fdocuments.in/reader036/viewer/2022062511/551c099d550346a34f8b5039/html5/thumbnails/3.jpg)
3
Radicals in plasmas: CF4 + e– CF3 · + F
· + e–
Prototype radical: NO ·
spin – orbit coupling
![Page 4: 1 Electron collisions with a radical: NO ·. 2 Electron – Driven Chemistry - Outer space - Ionosphere: northern light etc. - Industrial plasmas - semiconductor.](https://reader036.fdocuments.in/reader036/viewer/2022062511/551c099d550346a34f8b5039/html5/thumbnails/4.jpg)
4
![Page 5: 1 Electron collisions with a radical: NO ·. 2 Electron – Driven Chemistry - Outer space - Ionosphere: northern light etc. - Industrial plasmas - semiconductor.](https://reader036.fdocuments.in/reader036/viewer/2022062511/551c099d550346a34f8b5039/html5/thumbnails/5.jpg)
5
![Page 6: 1 Electron collisions with a radical: NO ·. 2 Electron – Driven Chemistry - Outer space - Ionosphere: northern light etc. - Industrial plasmas - semiconductor.](https://reader036.fdocuments.in/reader036/viewer/2022062511/551c099d550346a34f8b5039/html5/thumbnails/6.jpg)
6
Differential cross sections in N2O
Marinković B, Szmytkowski C, Pejčev V, Filipović D and Vuškoviš L,J. Phys. B 19 2365 (1986)
Johnstone W M and Newell W R, J. Phys. B 26 129 (1993)
Kitajima M, Sakamoto Y, Gulley R J, Hoshino M, Gibson J C, Tanaka H and Buckman S J, J. Phys. B 33 1687 (2000)
![Page 7: 1 Electron collisions with a radical: NO ·. 2 Electron – Driven Chemistry - Outer space - Ionosphere: northern light etc. - Industrial plasmas - semiconductor.](https://reader036.fdocuments.in/reader036/viewer/2022062511/551c099d550346a34f8b5039/html5/thumbnails/7.jpg)
7
Electron energy loss spectrum:states of the neutral molecule
![Page 8: 1 Electron collisions with a radical: NO ·. 2 Electron – Driven Chemistry - Outer space - Ionosphere: northern light etc. - Industrial plasmas - semiconductor.](https://reader036.fdocuments.in/reader036/viewer/2022062511/551c099d550346a34f8b5039/html5/thumbnails/8.jpg)
8
Excitation function: RESONANCES (states of the negative ion)
Phys. Rev. Lett. 2004, 93, 063201
![Page 9: 1 Electron collisions with a radical: NO ·. 2 Electron – Driven Chemistry - Outer space - Ionosphere: northern light etc. - Industrial plasmas - semiconductor.](https://reader036.fdocuments.in/reader036/viewer/2022062511/551c099d550346a34f8b5039/html5/thumbnails/9.jpg)
9
NO: Potential Curves
initial NO final NONO– resonance
![Page 10: 1 Electron collisions with a radical: NO ·. 2 Electron – Driven Chemistry - Outer space - Ionosphere: northern light etc. - Industrial plasmas - semiconductor.](https://reader036.fdocuments.in/reader036/viewer/2022062511/551c099d550346a34f8b5039/html5/thumbnails/10.jpg)
10
Comparison of NO and O2
NO O2
![Page 11: 1 Electron collisions with a radical: NO ·. 2 Electron – Driven Chemistry - Outer space - Ionosphere: northern light etc. - Industrial plasmas - semiconductor.](https://reader036.fdocuments.in/reader036/viewer/2022062511/551c099d550346a34f8b5039/html5/thumbnails/11.jpg)
11
Conclusions
NO·: transitions between electronic fine structure states
- small cross section for direct (nonresonant) excitation
- gigantic cross section for resonant excitation, elastic
- resonance parentage
- energetic relation
(- elastic cross sections not equal?)
![Page 12: 1 Electron collisions with a radical: NO ·. 2 Electron – Driven Chemistry - Outer space - Ionosphere: northern light etc. - Industrial plasmas - semiconductor.](https://reader036.fdocuments.in/reader036/viewer/2022062511/551c099d550346a34f8b5039/html5/thumbnails/12.jpg)
12