The key advance was finding a way to slow down the nobelium
atoms before they entered the trap - a feat the team accomplished by first injecting the atoms into a chamber filled with helium gas.
Jacobus de Cessolis's Liber de moribus hominum et officiis nobelium
ac popularium super ludo scachorum (chap.
The topics range from the basic science and research on the actinide series--those 14 chemical elements lying between actinium and nobelium
, inclusively, and representing the atomic numbers 89-102 (this group includes such radioactive elements as uranium and plutonium)--to their nuclear and superconducting applications.
After the war, Seaborg and his colleagues continued their research on the transuranium elements, discovering such elements as berkelium, californium, einsteinium, fermium, mendelevium, and nobelium
Atomic Voting number Name Symbol in favor(a) 101 Mendelevium Md 20 102 Nobelium
No 20 103 Lawrencium Lr 20 104 Dubnium Db 19 105 Joliotium Jl 18 106 Rutherfordium Rf 18 107 Bohrium Bh 20 108 Hahnium Hn 19 109 Meitnerium Mt 20