Study of Spin Interaction in Nuclei and Nuclear Reactions

在1985年8月在大坂举行的第六届核物理学极化现象国际研讨会和1987年1月在大坂大学举行的极化现象研讨会上介绍了这项合作研究补助金所支助的工作。测量了极化质子与氘原子弹性散射中的退极化参数。用N-N相互作用和张量力的计算很好地再现了测量的<K（_y^y）>值。退极化参数对自旋-自旋相互作用很敏感，并且已经测量了质子从<^（31）P>（质子奇数）和<^（29）Si>（质子奇数）的弹性散射。从这个分析的标量和张量项的自旋-自旋相互作用已获得。从分析（<->！p&gt;，2 p）反应，得到了有效N-N相互作用、介质效应、非共面几何和相对论处理等方面的信息。极化氘核的散射 ...更多信息 从中重核出发，采用折叠模型和耦合离散连续通道方法，考虑了氘D态和破裂过程的影响，从实验和理论两方面研究了氘的核分裂过程。根据实验方面的要求，本文总结了几种N-N散射报告中自旋参数符号的对照表，并给出了（d，p）反应中包括极化转移在内的极化观测量之间的关系。DWBA分析的向量分析能力在（<->！d&gt;，&lt;^6Li&gt;）反应表明了氘核自旋轨道力的显著影响。计算了（<->！p&gt;，<->！n&gt;）和（<->！d&gt;，<->！p&gt; x）反应，以及自旋翻转电荷交换（<->！d&gt;，&lt;^2He&gt;）反应和单重态氘核反应<->。d&gt;，d）反应也被测量。由（&lt;pi^+&gt;，&lt;K^+&gt;）和（&lt;K^-&gt;，&lt;pi^-&gt;）反应产生的超核已被证明具有相当数量的极化和排列。它们有望用于超核态的电磁跃迁、电磁矩和弱衰变的光谱研究。我们必须作出认真努力，发展明确的概念，并寻找具有根本重要性的问题。少

The works supported by this Grant-in-Aid for Co-operative Research were presented at the Sixth International Symposium on Polarization Phenomena in Nuclear Physics, Osaka, August 1985 and Symposium on Polarization Phenomena, Osaka University, January 1987. The depolarization parameter in, the elastic scattering of polarized protons from deuterium has been measured. The measured <K(_y^y)> values are well reproduced by a calculation using the N-N interaction with a tensor force. The depolarization parameter is sensitive to the spin-spin interaction, and has been measured for the elastic scattering of protons from <^(31)P> (proton odd) and <^(29)Si> (nwutron odd). From this analysis scalar and tensor terms of the spin-spin interaction have been obtained. From the analysis of ( <->!p> , 2p) reactions, several informations have been obtained for the effective N-N interactions, the medium effect, the non-coplanar geometry and the relativistic treatment. The scatterings of polarized deuterons … More is investigated experimentally from medium-weight and heavy nuclei, and theoretically with a folding model and coupled-discretized-continuum-channels nethod which includes effects of deuteron D-state and breakup process. According to requests from experimental side, a comparison table of notations for spin parameters used in several reports on N-N scattering has been summarized, and the relationships between polarization observables including polarization transfers have been presented for (d,p) reactions. The DWBA analysis of the vector analyzing powers in the ( <->!d> , <^6Li> ) reaction shows the significant effect of the deuteron spin-orbit force. The polarization transfer coefficients for ( <->!p> , <->!n> ) and ( <->!d> , <->!p> x) reactions, and the spin-dependent observables in the spin-flip charge-exchange ( <->!d> , <^2He> ) reaction and singlet deuterons by ( <->!d> , d) reaction have also been measured. Hypernuclei produced by ( <pi^+> , <K^+> ) and ( <K^-> , <pi^-> ) reactions have shown to have sizable amounts of polarization and alignment. They are promising to be used for spectroscopic studies of electromagnetic transitions, electromagnetic moments and weak decays of hypernuclear states. We must make a deliberate effort to develop clear concepts and to look for problem of fundamental importance. Less