N - d scattering including electromagnetic forces
N - d scattering including electromagnetic forces
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N - d 散射，包括电磁力
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
L. Marcucci
中科院分区：
文献类型：
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作者：
A. Kievsky;M. Viviani;L. Marcucci
在核子-氘核散射中研究由库仑和两个核子之间的磁矩相互作用组成的电磁势。对于相对 $N ext{ensuremath{-}}d$ 角动量 $L$ 具有较低值的状态，已使用相关超球谐展开基础解决了三核问题。对于角动量$L$具有较大值的状态，推导了核子-氘核磁矩相互作用的显式公式，并使用玻恩近似计算相应的$T$矩阵。然后，导出了描述 $N ext{ensuremath{-}}d$ 弹性散射的过渡矩阵，其中包括磁矩相互作用的 $1∕{r}^{3}$ 行为所需的无限数量的分波。在低能量下的矢量分析能力中观察到明显的效果。通过增加碰撞能量来检查这些效应的演变。
The electromagnetic potential consisting in the Coulomb plus the magnetic moment interactions between two nucleons is studied in nucleon-deuteron scattering. For states in which the relative $N ext{ensuremath{-}}d$ angular momentum $L$ has low values the three-nucleon problem has been solved using the correlated hyperspherical harmonic expansion basis. For states in which the angular momentum $L$ has large values, explicit formulas for the nucleon-deuteron magnetic moment interaction are derived and used to calculate the corresponding $T$ matrices in Born approximation. Then, the transition matrices describing $N ext{ensuremath{-}}d$ elastic scattering have been derived including an infinite number of partial waves as required by the $1∕{r}^{3}$ behavior of the magnetic moment interaction. Appreciable effects are observed in the vector analyzing powers at low energies. The evolution of these effects by increasing the collision energy is examined.