# Confirming stable new elements?

Trans-uranium element production is more often confirmed from decay products. But would such a new atom be overlooked if stable? Recently, element 118 occurred in one out of 1019 collisions, and was most readily detected by its signature radiation.

mathman
I may misunderstand your objection, but you may also be unaware of the timescales involved. Take 1 fm as a typical nuclear size. Take the speed of light as a typical velocity (we are only interested in the odrer of scales involved). You will find that, the time it takes for a nucleon to go from on side of the nucleus to the other is of the order $$10^{-24}$$ s. Here we are talking about nuclei with halflives above 1 ms. This is a huge time at the nuclear scale. Besides, it could very well be that, in the island of stability, there are elements with halflives of the order of days.