They used the modern technique of correlation of genetic parent - daughter decays to confirm their assignment .
In 1970 , the team at the Lawrence Berkeley National Laboratory ( LBNL ) studied this reaction and identified the isotope Db in their discovery experiment .
LBNL used the modern technique of correlation of genetic parent - daughter decays to confirm LBNL 's assignment .
In 1970 , the team at the Lawrence Berkeley National Laboratory ( LBNL ) studied this reaction and identified the isotope Db in their discovery experiment .