Characteristics of Local Pion–Nucleus Potentials That Are Equivalent to Kisslinger-Type Potentials
Characteristics of Local Pion–Nucleus Potentials That Are Equivalent to Kisslinger-Type Potentials
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DOI：
10.1006/aphy.1996.0054
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发表时间：
1996-05
影响因子：
3
通讯作者：
M. Johnson;G. R. Satchler
中科院分区：
文献类型：
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作者：
M. Johnson;G. R. Satchler
摘要 Krell-Ericson 变换提供了一个与非局部 Kisslinger 型势完全等价的局部势。相关的散射波函数通过佩雷因子相关。我们基于低阶多重散射理论，在 20 至 291 MeV 的能量范围内检查这些局部势的示例的属性。电势的径向形状可以显示核表面的相当大的结构。局部实势的一般特征再现了弗里德曼从其与模型无关的π介子散射数据分析中确定的五个特征。佩雷因子表现出简单且大多单调的行为。
Abstract The Krell–Ericson transformation provides a local potential that is exactly equivalent to the nonlocal Kisslinger-type potential. The associated scattering wave functions are related by a Perey factor. We examine the properties of examples of these local potentials, based upon low-order multiple scattering theory, at energies ranging from 20 to 291 MeV. The radial shapes of the potentials may display considerable structure in the nuclear surface. The general characteristics of the local real potentials reproduce the five features identified by Friedman from his model-independent analysis of pion scattering data. The Perey factors show a simple, mostly monotonic, behavior.