Decaying State and Resonance Scattering
スポンサーリンク
概要
- 論文の詳細を見る
The scattering phase shift in the neighbourhood of an isolated resonance is expressed in terms of three parameters, or more accurately four parameters. The first two parameters are the resonance energy and the width. The other parameters represent the background phase shift (namely, the phase shift far from the resonance level), which determines the "shape" of the scattering cross section. It is shown that these parameters are completely determined by the decaying state wave function through its complex energy eigenvalue (the position of the S-matrix pole) and a complex "effective range" (or the complex residue) of the decaying state. Another type of resonance scattering at low energies is also discussed in terms of the (real) energy eigenvalue and the (real) effective range of the virtual state. For bound states the situation is similar : the residue of the negative hydrogen ion H^- (the bound state in the electron-hydrogen atom scattering system) is evaluated here by using accurate values of the binding energy of the H^- state and its effective range.
- 理論物理学刊行会の論文
- 1967-05-25
著者
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Ohmura Takashi
Department Of Cardiology Mie Central Medical Center
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Ohmura Takashi
Department Of Physics And Atomic Energy Research Institute College Of Science And Engineering Nihon
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