 Important information could be gained regarding the properties of superheavy nuclei by the synthesis of more livermorium isotopes , specifically those with a few neutrons more or less than the known ones – 286Lv , 287Lv , 288Lv , 289Lv , 294Lv , and 295Lv . This is possible because there are many reasonably long @-@ lived isotopes of curium that can be used to make a target . The light isotopes can be made by fusing curium @-@ 243 with calcium @-@ 48 . They would undergo a chain of alpha decays , ending at transactinide isotopes that are too light to achieve by hot fusion and too heavy to be produced by cold fusion . 
