Simple one-dimensional quantum systems in the limit of low energy are the subject of this work. The description of tunneling through barriers and the reflection above potential steps by simple, reliable and general approximative formulas partially based on semiclassical methods is the aim. For special potential forms I analytically derive exact threshold laws, e.g. the transmission through a superposition of an attractive singular and a repulsive centrifugal term, which is important in atomic and molecular physics
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Simple one-dimensional quantum systems in the limit of low energy are the subject of this work. The description of tunneling through barriers and the reflection above potential steps by simple, reliable and general approximative formulas partially based on semiclassical methods is the aim. For special potential forms I analytically derive exact threshold laws, e.g. the transmission through a superposition of an attractive singular and a repulsive centrifugal term, which is important in atomic an...
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