Transcript Detecting Radiation

Nuclear Fission Reactions
• Purposely split a nucleus into two or more
nuclei with smaller masses.
• Tremendous amounts of energy released.
92
235
56 Ba 30 n
Kr

U01n  36
91
142
1
[http://wps.prenhall.com/wps/media/objects/602/616516/Media_Assets/Chapter22/Text_Images/FG22_08.JPG]
Combustion
# of Hours you
could play
XBOX 360
Nuclear
9167 Wh 583,333,333 Wh
3,645,833
57.3 hours
hours
Nuclear Fission Reactions
• The neutrons
released can
cause a chain
reaction with
other atoms that
are near them.
Click here for
a chain
reaction demo
[http://chemed.chem.purdue.edu/genchem/topicreview/bp/ch23/graphics/23_19fig.gif]
Nuclear Fission Reactions
• In order for a
chain reaction
to continue, a
certain amount
of material,
known as
critical mass, is
needed.
Click here for a simulation
Nuclear Fusion Reactions
• Two nuclei of
low mass are
combined to
form a nucleus
of larger mass.
Intermediate
H H  He  n
3
1
2
1
4
2
1
0
[http://www.windows.ucar.edu/sun/Solar_interior/Nuclear_Reactions/Fusion/dt_fusion.gif]
Combustion
Nuclear
583,333,333 Wh 94,444,444,444 Wh
# of Hours you
could play
XBOX 360
3,645,833
hours
590,277,778
hours
Nuclear Fusion Reactions
• Only occur
when atoms
can get close to
one another at
extremely high
temperatures
(ex: Stars).
[http://www.scienceinschool.org/repository/images/issue5fusion2_large.jpg]