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November 9th is the element darmstadtium's birthday. German scientists at the Gesellschaft für Schwerionenforschung (GSI) in Darmstadt, Germany created four atoms of element 110, darmstadtium. This element does not exist naturally and it takes extraordinary steps to create it. First, ions of nickel-62 were accelerated to 5% of the speed of light and smashed into a target of lead-208.The collision caused the reaction:

208Pb + 62Ni → 269Ds + 1n

This isotope of darmstadtium decays by alpha decay in 1/20 of a millisecond into an isotope of hassium. In order to determine if the atom of darmstadtium was created, the decay and energies of the daughter isotopes had to be detected. Only four of these daughter particles were detected on November 9, 1994. The IUPAC recognized their discovery in 2001 and the GSI team was allowed to propose a name for their element. They narrowed the choice down to either darmstadtium (Ds) or wixhausium (Wi) after the location of the GSI labs. The IUPAC officially accepted the name darmstadtium in August, 2003.

Find out what else occurred on this day in science history.

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November 12, 2011 at 9:07 am
(1) saliha says:

it is nice.in science test i got 10 ofout 10 my score is100%

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