2002 Fiscal Year Final Research Report Summary
Investigation of the force and shape of the unit particle in the plasma using laser tweezers
| Project/Area Number |
12555020
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
Applied physics, general
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| Research Institution | Sasebo National College of Technology |
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Principal Investigator |
SHIKU Osamu Sasebo National College of Technology, Department of Control Engineering, Associate Professor, 電子制御工学科, 助教授 (00235516)
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| Co-Investigator(Kenkyū-buntansha) |
MITSUHASHI Kazuhiko Sasebo National College of Technology, Department of Electrical Engineering, Lecturer, 電気工学科, 講師 (60311114)
NAMBU Yukihisa Sasebo National College of Technology, Department of Electrical Engineering, Associate Professor, 電気工学科, 助教授 (00228115)
KAWASAKI Hiroharu Sasebo National College of Technology, Department of Electrical Engineering, Associate Professor, 電気工学科, 助教授 (10253494)
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| Project Period (FY) |
2000 – 2002
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| Keywords | Pulsed Laser Deposition / Thin Film / Particle / Electromagnetic Field / Cluster / Droplet |
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| Research Abstract |
In this research, particle behavior has been investigated in the plasma processing , especially in the plasma plume of pulsed laser deposition method. In order to clear the behavior, we measure the particle size and density on the substrate, and measured the laser light scattering method in plasma plume of the pulsed laser deposition.
Experimental results suggest as follows.
1)Particle size and density in the plasma plume is increased with increasing laser power and gas pressure.
2)Droplets size and density on the substrate is also increased with increasing the laser power and gas pressure.
3)Droplets size and density can be controlled using magnetic field across the plasma plume.
To control the particle growth and behavior, we calculate the charge force for the mono particle in the plasma using the orbital restriction theory. The calculation results suggest that particles behavior from the wall related with the wall potential voltage and particle kinetic energy. The results suggest particle can not incidence in the plasma when wall potential is lower than plasma floating potential.
In the calculation, we neglect the shape change of the plasma ion sheath around the particle, ionization in the plasma ion sheath region and secondary electron emission effect from the chamber wall. Therefore, calculation results is not coincide with the observation results actually, however, particle behavior can be expect broadly, using this calculation.
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Research Products
(20 results)
