Darmstadtium the JINR showed signs of Ds being produced from Pu and S. Each team proposed its own name for element 110: the American team proposed "hahnium" after Otto Hahn in an attempt to resolve the situation on element 105 (which they had long been suggesting this name for), the Russian team proposed "becquerelium" after Henri Becquerel, and the German team proposed "darmstadtium" after Darmstadt, the location of their institute. The IUPAC/IUPAP Joint Working Party (JWP) recognised the GSI team as discoverers in their 2001 report, giving them the right to suggest a name for the element. Using Mendeleev's nomenclature for
Otto Hahn by Edwin McMillan and Philip H. Abelson in 1940. On 13 July 1938, with the help and support of Hahn, Meitner – born into a Jewish family – escaped to the Netherlands; before she left, Hahn gave her a diamond ring he had inherited from his mother, to be used to bribe the frontier guards if required. Meitner emigrated to Stockholm, and Hahn continued to work with Strassmann. In late 1938 they found evidence of isotopes of an alkaline earth metal in their sample. The metal was detected by the use of an organic barium salt constructed by Wilhelm Traube.