Who am i
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Who Am I?. Thomas M. Antonsen Jr. Professor of Physics and Electrical and Computer Engineering University of Maryland College Park. How Did I Get Here?. High School Ramsey High School -1969 Ramsey, NJ College BS (Electrical Engineering) 1973 MS/PhD (Plasma Physics) 1976 Career

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Who am i

Who Am I?

Thomas M. Antonsen Jr.

Professor of Physics and Electrical and Computer Engineering

University of Maryland College Park


How did i get here

How Did I Get Here?

High School

Ramsey High School -1969

Ramsey, NJ

College

BS (Electrical Engineering) 1973

MS/PhD (Plasma Physics) 1976

Career

Post Doc Naval Research Lab 1 year

Research Scientist (MIT 3 years)

Joined University of Maryland in 1980

1969-2011 41/42 years at a University


Plasma physics

Plasma Physics

Plasma is the fourth state of matter (solid, liquid, gas, plasma)

Most of the visible

universe is plasma

http://FusEdWeb.pppl.gov/


Who am i 3537694

Fission

Fusion

Small nuclei stick together to make a bigger one and releases energy

Fusion powers all the stars, including the Sun.

The fuel is hydrogen, but it has to be heated to millions of degrees to ignite the burn

Power plants based on fusion could supply all our electrical needs. They could also be used to generate hydrogen for fuel cell cars, thus reducing consumption of oil.


Why fusion

Why Fusion?

  • Fuel is inexhaustible and available to all (from water)

  • There is no CO2 emission

  • There is no danger of a runaway or a meltdown –

  • turn it off like a gas burner

  • Waste is low level and has to be monitored only for 50-100 years (Yucca Mountain is for ~10,000 years)

  • Low risk of nuclear materials proliferation - No uranium or plutonium


State of the art

State of the Art

Magnetic Confinement: ITER

US-EU-Russia-Japan-India Collaboration

Will be built in Cardarache France

Completion 2016??

http://www.iter.org/

Inertial Confinement: NIF

Lawrence Livermore Lab

Under construction

Completion expected in 2008

http://www.llnl.gov/nif/

Similar program in France


Particle acceleration using plasmas

Direct acceleration

limited to laser period

E

k

Intense laser pulse

B

plasma:

Plasma wave driven by force of laser pulse

Plasma Wave

Laser Pulse

Duration of pulse matched

to plasma period

Speed of wave = group

velocity of laser pulse

I=1018 W/cm2, L= 10cm DE ~ 1 GeV

Particle Acceleration Using Plasmas


How does it really work

How Does it Really Work?

Analogy:

Laser PulseBoat

PlasmaLake

Plasma WaveSurface Wave

ElectronsSurfer

Relativity: Small change in velocity Large change in energy

InjectionTow rope


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