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    Physics Cheat Sheet 2

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    mifewpmfewpo
    1) There are three main types of nuclear reactors - thermal, fast breeder, and fusion. 2) Thermal reactors use enriched uranium-235 fuel rods and slow neutrons to sustain a chain reaction, while fast breeders use plutonium-239 fuel and breed more plutonium from uranium-238. 3) Fusion reactors aim to fuse hydrogen nuclei through high temperatures and pressures to release binding energy, mimicking nuclear fusion in stars.

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    Physics Cheat Sheet 2

    Uploaded by

    mifewpmfewpo
    210 views1 page
    1) There are three main types of nuclear reactors - thermal, fast breeder, and fusion. 2) Thermal reactors use enriched uranium-235 fuel rods and slow neutrons to sustain a chain reaction, while fast breeders use plutonium-239 fuel and breed more plutonium from uranium-238. 3) Fusion reactors aim to fuse hydrogen nuclei through high temperatures and pressures to release binding energy, mimicking nuclear fusion in stars.

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    1) There are three main types of nuclear reactors - thermal, fast breeder, and fusion. 2) Thermal reactors use enriched uranium-235 fuel rods and slow neutrons to sustain a chain reaction, while fast breeders use plutonium-239 fuel and breed more plutonium from uranium-238. 3) Fusion reactors aim to fuse hydrogen nuclei through high temperatures and pressures to release binding energy, mimicking nuclear fusion in stars.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    210 views1 page

    Physics Cheat Sheet 2

    Uploaded by

    mifewpmfewpo
    1) There are three main types of nuclear reactors - thermal, fast breeder, and fusion. 2) Thermal reactors use enriched uranium-235 fuel rods and slow neutrons to sustain a chain reaction, while fast breeders use plutonium-239 fuel and breed more plutonium from uranium-238. 3) Fusion reactors aim to fuse hydrogen nuclei through high temperatures and pressures to release binding energy, mimicking nuclear fusion in stars.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 1

    Jacob Garnaut 11A

    A-B=electrostatic force (long distance) Power: Note:


    B FISSILE- a nucleus capable of splitting
    A-A2=nuclear (close proximity)
    into two nuclei by absorbing a
    REACTOR TYPES: neutron.
     Thermal Few fissile isotopes-
     Fast breeder eg: Pu-239 & U-235
     Fusion Energy:
    A
    Constant (speed of light)
    Critical mass- the minimum amount of enriched m/s
    material in a sphere to sustain a chain reaction.
    THERMAL:
    Subcritical- not enough neutrons to sustain chain Fuel rod- contains U-235 (enriched uranium) for fission
    reaction through absorption of SLOW neutron.
    Critical- sustained chain reaction (power plant) Control rod- controls flow of neutrons by absorbing
    Supercritical- chain reaction grows and explosion some neutrons to control reaction.
    occurs (nuclear weapon) Moderator- slows neutrons (small nuclei).
    Shape of sample affects critical mass. Coolant- absorbs heat energy from fission. Heat used to
    Eg: Flat=subcritical. Spherical=supercritical. generate power (pressurised to avoid boiling).
    Below: critical reaction (left)supercritical reaction
    (right)

    FUSION FAST BREEDER:


    Fast hydrogen nuclei must be fired at each Fuel rod- contains plutonium-239 for fission through
    other to overcome the electrostatic force absorption of a FAST neutron. It has a uranium-238
    of the positive protons. blanket to absorb fast neutrons and breed more Pu-239.
    When 2 protons and 2 neutrons are Control rod- controls flow of neutrons by absorbing
    separate they have more energy called some neutrons to control reaction
    binding energy. When the nuclei are fused Coolant- absorbs heat energy from fission. Heat used to
    together this binding energy is lost generate power (pressurised to avoid boiling).
    through a loss of mass. Calculated by
    .
    (U-235= shorter half-life)

    NUCLEAR WASTE
    Low: tools, clothing, wrapping contaminated shortly by
    radionuclides. 90% of volume, 1% of radioactivity.
    Compacted/incinerated then buried in shallow pits.
    Intermediate: reactor components, chemical sludge.
    Solidified in bitumen/concrete, stored in deep trenches.
    High: contaminated reactor parts. 95% of radioactivity, 3% of
    volume. Reused or stored in cooling pods.

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