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Viktor%20Bollen%20Brett%20Giles
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All antielements are the same mass with opposite charges, and ... Smash it into something (Tungsten) Catch in penning trap. Throw Positrons at it. To observe ... – PowerPoint PPT presentation
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Title: Viktor%20Bollen%20Brett%20Giles
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Viktor BollenBrett Giles
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Outline
- What is antimatter?
- Energy created by antimatter matter collisions
- History
- Production
- Storage
- Current and Theoretical Uses
- Antiuniverse Theory
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What is antimatter?
- Antimatter is the counter part to matter
- For every element there is an antielement
- All antielements are the same mass with opposite
charges, and magnetic moment
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What is antimatter?
- Matter cannot be created without antimatter.
- Where is all the antimatter?
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Energy
- E mc2
- m/2 of antimatter and m/2 of matter, 100 energy
yield
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Energy
proton
antiproton
p
electron
positron
_ p
H
_ H
?
?
hydrogen
antihydrogen
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History
- Paul Dirac
- Carl Anderson
- Emilio Segre and Owen Chamberlain
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Paul Dirac
- The history of antimatter begins in 1928 with the
physicist Paul Dirac
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Carl David Anderson
- In 1932 the next logical step in the history of
antimatter was taken. The prediction turned
reality
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Emilio SegreOwen Chamberlain
- In 1955 using the Bevatron accelerator at Berkley
University, antiprotons were artificially
produced
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Artificial Production
- Artificially producing antimatter is an extremely
inefficient process - High energy collisions are required
- Penning traps capture the antiprotons
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Idiots guide to making antihydrogen
- Accelerate a proton to high velocities
- Smash it into something (Tungsten)
- Catch in penning trap
- Throw Positrons at it
- To observe
- Decelerate the antiproton
- Throw electrons at it
- Take the electrons away
- Throw Positrons at it
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Top Research Facilities
- CERN
- Geneva, Switzerland
- Fermilab
- Chicago, USA
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CERN
- The largest particle physics facility in the
world - Created antihydrogen in 1995
- Activated the Antiproton Decelerator in 1999
- Antiproton Collector and Antiproton Accumilator
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Fermilab
- Proposed site for the International Linear
Collider - Creates antiprotons on a regular basis with the
Tevatron Collider
- the Tevatron Collider
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Natural Production
- High energy cosmic ray matter collisions
- Radioactive decay (positive beta decay)
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Storage
- Storage is difficult because shortly after
creation antimatter particles contact matter
particles and annihilate. - We can only produce an extremely small amount of
antimatter
If we could assemble all of the antimatter we've
ever made at CERN and annihilate it with matter,
we would have enough energy to light a single
electric light bulb for a few minutes
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Current and Theoretical Uses
- PET Scans (Positron Emission Tomography)
- Study particle behavior
- Weapons
- Fuel Energy
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Antiuniverse Theory
- Dirac was first to contemplate its existence
- Antiuniverse would exist of antistars antigalaxys
antiplanets and antiyou - Boundry between them would create a lot of gamma
rays
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Sources
- http//www.lbl.gov/abc/Antimatter.html
- http//livefromcern.web.cern.ch/livefromcern/antim
atter/history/AM-history00.html - http//en.wikipedia.org/
- http//public.web.cern.ch/public/Content/Chapters/
Spotlight/SpotlightAandD-en.html - http//science.nasa.gov/headlines/y2000/ast29may_1
m.htm - http//public.web.cern.ch/public/Content/Chapters/
Spotlight/SpotlightAandD-en.html
