High spin states in neutron - rich ~ { 104 , 106 , 108 } mo nuclei have been studied by measuring the prompt - rays emitted after their formation in the spontaneous fission of 252cf . the measurement was carried out at the lawrence berkeley national laboratory 本論文利用在berkeleygammasphere探測裝置上進行的252cf自發(fā)裂變產生的瞬發(fā)譜實驗測量得到的三維符合數(shù)據(jù),對豐中子~ { 104 , 106 , 108 } mo核進行了高自旋研究。
By measuring high - fold prompt - ray coincidence events following the spontaneous fission of 252cf , the high spin states in very neutron - rich 113ru nucleus have been studied . furthermore , some isomers in neutron - rich odd - a nuclei 107 , 109 , 111 , 113ru have been analyzed 通過對252cf自發(fā)裂變產生的瞬發(fā)譜的測量,對極端豐中子核113ru的高自旋態(tài)進行了研究,并對豐中子奇a核107 , 109 , 111 , 113ru的低激發(fā)態(tài)同質異能態(tài)進行了分析。
The experiment was carried out at the lawrence berkeley national laboratory ( u . s . a ) . a 252cf was placed at the center of the gammasphere detector array which , for this experiment , consisted of 102 compton - suppressed ge detectors . by measuring prompt - ray of spontaneous fission from 252cf , a total of 5 . 7 1011 triple - and higher - fold coincidence events were collected 實驗工作是在美國洛侖茲伯克利國家實驗室( lbnl )的gammasphere探測裝置上完成的, 252cf自發(fā)裂變源放置在一個由102個反康ge探測器組成的gammasphere探測器陣列的中心,測量自發(fā)裂變產生的瞬發(fā)譜,記錄三重以上的符合事件。