It is shown that the Project Shell Model may present a systemic description of the yrast superdeformed bands in even-even Hg isotopes nuclei. The calculated γ -ray energies are compared with data for which spin is unambiguously assigned. Excellent agreement with available data for all isotopes is obtained. The calculated electromagnetic properties provide a microscopic understanding agree with those measured ones. 本文係以投射殼層模型對汞同位素偶-偶原子核之基態超形變的能帶作系統 化的研究,計算求得的γ 射線能量與同位素中已確定自旋之實驗值非常吻合,其 他求得的電磁性質亦與實驗值十分吻合。