Download James Chadwick

James Chadwick
By: Kayla Maurer & Logan Heinl
Background
• Born in 1891 & died in 1974
• Graduate of the University of Manchester
• Studied under Ernest Rutherford
(father of nuclear physics)
• After World War I went to the University of
Cambridge with Rutherford where he earned
his Doctor of Philosophy
• Rutherford’s Assistant Director of Research
His discovery
• Chadwick’s line of research in 1932 led to his
discovery of the neutron
• Went to measure the mass and went forward
in the research of this neutron to find out it
was a major weapon in the fight against
cancer
About the neutron
• James Chadwick used scattering data to
calculate the mass of this neutral particle
• Since Rutherford, it had been known that the
atomic mass number of a nuclei is a little
more than twice the atomic number for most
atoms and that essentially all the mass of the
atom is concentrated in the relatively tiny
nucleus.
After discovery
• 1935 he became a professor of physics at the
University of Liverpool where he installed a
cyclotron
• Cyclotron- type of a solid particle accelerator
used to make quantities of radioactive isotopes
called positron emitters
• Carried research as part of the Tube Alloys
project to build an atomic bomb and wrote the
final draft of the Maud Report
• This inspired government to start serious atomic
bomb research
Cyclotron
Works Cited
• http://en.wikipedia.org/wiki/James_Chadwick
• http://www.nobelprize.org/nobel_prizes/phys
ics/laureates/1935/chadwick-bio.html
• http://hyperphysics.phyastr.gsu.edu/hbase/particles/neutrondis.html