Proposal to determine the origin of the effects of electric fields on the muon response in composite insulation

In the previous proposal we examined the ALC response of components of the complex dielectric under externally applied electric fields (EEF). We saw a shift in the asymmetry at the ALC peak and have proposed two possible cases as to the cause. In one case the electrons left behind when the muon thermalises are affected by the EEF, and in the other a redistribution of the spin density causes a change in the hyperfine coupling. We propose to establish which of these is the cause of the shift seen, or whether it is a combination of both by reversing the EEF direction,and by fully characterizing the ALC spectrum. Once completed this will consolidate our theories as to the origin of the effect of EEF on the dielectric, and provide a sound basis for publication. Additionally, we would like to perform the same experiments at higher fields in order to determine if the trends seen continue.

在先前的研究提案中，我们探究了外加电场（externally applied electric fields, EEF）作用下复介电组分的ALC响应。我们观测到ALC峰处的不对称性发生了偏移，并针对该偏移的成因提出了两种可能的情形：其一为缪子热化过程中遗留的电子受到EEF的影响；其二为自旋密度的重新分布导致超精细耦合发生改变。我们计划通过反转EEF的方向，并对ALC谱进行全面表征，以明确上述两种情形中哪一种是观测到的偏移的成因，亦或是二者共同作用的结果。此项研究完成后，将夯实我们关于EEF对介电体影响效应起源的理论，为后续发表研究成果提供坚实的基础。此外，我们希望在更高场强下开展相同实验，以确定观测到的变化趋势是否能够延续。