Photodetachment of H- near a Metallic Nanosphere Surface

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概要

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• We investigate the photodetachment of H- near a metallic nanosphere surface over a radius range of 5 to 280 nm. We present the electrostatic image potential of the detached electron caused by the metallic sphere surface, and then we study the classical motion of the photo-detached electron near a metallic sphere surface. The photodetachment cross-section of this system has been derived and calculated based on the closed orbit theory. The radius of the metallic sphere surface and the ion--surface distance have significant effects on the photodetachment of H- near a metallic sphere surface. For a certain ion--surface distance, the oscillating amplitude of the cross-section becomes strengthened as we increase the radius of the metallic sphere surface. In addition, for a given metallic sphere surface, the oscillation in the cross-section decreases with the increase in the ion--surface distance. Hence, we can control the photodetachment of H- near a metallic sphere surface by changing the radius of the sphere or the ion--surface distance. This study provides new understanding on the photodetachment process of negative ions in the presence of a sphere surface or cavities.

• 2012-07-15

著者

• Wang De-hua

  School of Physics and Optoelectronic Engineering, Ludong University, Yantai 264025, China

• LI Shao-Sheng

  School of Physics and Optoelectronic Engineering, Ludong University, Yantai 264025, China

• Mu Hai-feng

  School of Physics and Optoelectronic Engineering, Ludong University, Yantai 264025, China

関連論文

• Photodetachment of H- near a Metallic Nanosphere Surface
• Semiclassical Calculation of the Photodetachment Cross Section of Hydrogen Negative Ion Inside a Square Microcavity
• Photodetachment of H^{-} in Inhomogeneous Electric and Magnetic Fields
• Photodetachment of H⁻ in Inhomogeneous Electric and Magnetic Fields

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