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Objective:
In this experiment our objective is to investigate the decay of one of
the isotopes of Protactinium, m234-Pa. A GM-tube, the Vernier Radiation
Monitor, is connected to a CBL or a LabPro. Collected data will be stored
in a graphing calculator and can be analysed either with the calculator or
a computer.
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Lise Meitner (1878-1968), the
daughter of a successful and prosperous Vienna lawyer. Her
parents placed great value on education, and she was educated
privately, by personal tutor. It was during her youth that she
discovered her talent and interest in mathematics and physics.
She entered the University of Wiena in 1901, studying her two
passions: mathematics and physics (under Ludwig Boltzmann).
She graduated with her doctorate in 1906, having written her
thesis on the conduction of heat in inhomogenous solids. Then
she went to Berlin in 1907 to study with Max Planck and the
chemist Otto Hahn. She worked together with Hahn for 30 years,
each of them leading a section in Berlin's Kaiser Wilhelm
Institute for Chemistry. Hahn and Meitner collaborated closely
studying radioactivity, with her knowledge of physics and his
knowledge of chemistry working in tandem. In 1918, they
discovered the element protactinium. In 1923, she discovered
the radiationless transition known as the Auger effect, which
is named for Pierre Auger, a French scientist who discovered
the effect two years later. Element 109 is named meitnerium in
her honor. |
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