Discovery in Detail
The discovery was based on a grand total of only 17 atoms. It is synthesized via the 253Es (α,n) 256101 reaction in the 60-Inch-Cyclotron (= 152 cm) at Berkeley (California). The target can be produced by irradiation of lighter isotopes as plutonium in the Materials Testing Reactor at the Arco Reactor Station in Idaho. Remarkable is that this target consisted of only 109 atoms of highly radioactive 253Es (with a half-life of 20.5 days). By elution through a calibrated cation exchange resin column, mendelevium was separated and chemically identified.
Read more about this topic: Mendelevium
Famous quotes containing the words discovery and/or detail:
“It was one of those evenings when men feel that truth, goodness and beauty are one. In the morning, when they commit their discovery to paper, when others read it written there, it looks wholly ridiculous.”
—Aldous Huxley (18941963)
“Jamess great gift, of course, was his ability to tell a plot in shimmering detail with such delicacy of treatment and such fine aloofnessthat is, reluctance to engage in any direct grappling with what, in the play or story, had actually taken placeMthat his listeners often did not, in the end, know what had, to put it in another way, gone on.”
—James Thurber (18941961)