Download - Sub Atomic particles
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Topic: Sub Atomic Particles: Overview, Types & Significance
Submitted By:
Name: D.Sairam ( 1st Sem IBT)
Teacher: Dr. Vineet Sharma
Course Code: BSBT-102 ( Chemistry for
Biologists)
Assignment Code: U2P1
Source: www.britannia.com/images
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Overview
• Introduction
• Types of Sub-Atomic Particles
• Quarks
• Leptons
• Bosons
• Significance
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Introduction
• Subatomic particles are particles that are smaller than
atoms. They are present within an atom and cannot be
seen by our naked eyes.
• They have their own distinct characters and are
mainly of two types of Elementary Particles and
Composite Particles.
• Protons and neutrons are Composite Particles while
Electron is an Elementary Particle.
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Source: Google Images/sub_atomic particles
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Elementary Particles
Colour Confinement
Hadrons
Types
QUARKS
Source: Google Images/Quarks
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Quarks can be observed
in Hadrons such as
Baryons i.e. in particles
such as Protons and
Neutrons.
Murray Gell-Mann (Right) and
George Zweig
Source: a) Google Images
b) www.sciencedaily.com/Quarks
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Elementary
Types
Electron
Generations
Not subjected
to strong
Interactions like
Quarks
Leptons
Sources:
www.google.com/images
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This is Positronium ,a system that combines Electron with it’s anti particle
Positron. It ( system) is highly unstable as the duo react to give two 2 Gamma
particles. It's lifespan is around 125 picoseconds.
Source:
www.wikipedia.org/positro
nium
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Either Elementary or
Composite
Types of Elementary
Bosons
a) Scalar or Zero Spin –
Higgs Boson
b) Gauge or Force-
Gluon, Photon and W
and Z Boson.
Composite: Meson
Graviton ( Hypothetical
so far)
Bosons
Source: www.google.com/images
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Source: www.google.com/images
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Significance of Sub Atomic Particles
• They are produced in cosmic rays and during scattering
processes in particle accelerators.
• Electron, arguably the most important Sub-Atomic Particle
helps in studying and identifying Chemical Properties of
Elements.
• Proton Therapy is a type of treatment that can be used to treat
Cancers.
• Elimination or Turning off the Higgs Field can result in rapid
Communications and Transmission of Signals.
• Positron is used in PET scan that treat many ailments and
maladies.
• Most of the Gauge Bosons are used in Super fluidity.
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References
http://profmattstrassler.com/articles-and-posts/particle-physics-basics/the-
known-apparently-elementary-particles/tau-leptons/
http://www.sciencedirect.com/science/article/pii/0375947481903043
http://www.scienceclarified.com/sp-th/subatomic-particles.html
http://www.bbc.co.uk/schools/gcsebitesize/science/add_aqa/atomic_structu
re/atomic_structurerev2.shtml
http://chemwiki.ucdavis.edu/Physical_Chemistry/Atomic_Theory/The_Ato
m/Sub-Atomic_Particles
http://en.wikipedia.org/wiki/Subatomic_particle
http://search.yahoo.com/yhs/search?hspart=ddc&hsimp=yhs-
ddc_bd&p=composite%20bosons&type=999_sca0__alt__ddc_dss_bd_com
http://www.britannica.com/gallery/browse
http://www.azonano.com/news.aspx?newsid=12677
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