A Quantum Theory of Scattering by a Fluctuating Potential
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概要
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A quantum-mechanical scattering theory is developed for the scattering by apotential of which strength is randomly fluctuating between two values with a switchingrate 7/2. Within this model the T matrix averaged over the fluctuation is derived exactly,from which the averaged scattering cross section (ACS) is obtained by using the opticaltheorem. Explicit calculations of the ACS are carried out for three cases; (i) within theBorn approximation, (ii) for a separable potential, (111) for a short-range potential in alattice. It is found that the low-energy ACS is enhanced in comparison with the staticcase for E/h<7'!,h/ (2ma') because of the large inelastic cross section, where E is theenergy of the incident particle with a mass m and a is the range of the potential.
- 社団法人日本物理学会の論文
- 1982-04-15
著者
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Inaba Yutaka
Department Of Physics The University Of Tokyo
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Inaba Yutaka
Department Of Epidemiology And Enivironmental Health Juntendo University School Of Medicine
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