RICHARD TEMKIN, Senior Research
Scientist; Associate Director, Plasma Science and Fusion Center
Research Interests
Dr. Temkin's
research interests encompass a variety of fields of basic and applied
physics, with major emphasis on coherent sources of infrared and
millimeter waves and their applications. Both experimental and theoretical
research activities are undertaken.
Major research projects include:
- Electron Cyclotron
Maser/Gyrotron: Experimental and theoretical research on
high frequency (50 - 600 GHz), high power (up to 1 MW) gyrotrons
and on the application of gyrotrons to plasma heating, radar,
and plasma diagnostics.
- High Gradient Acceleration:
High gradient electron accelerators capable of operation at gradients
above 100 MeV/meter. Novel sources of high power microwaves and
novel structures for achieving high gradient acceleration. Laser-photocathode
driven RF-guns for use as injectors into high gradient accelerator
structures.
- Photonic Bandgap
Structures: Novel photonic bandgap structures for use in
active devices, including vacuum electron devices and accelerators,
and in passive devices such as transmission lines and beam combiners.
- Quasi-Optical Antenna
Research: Theoretical and Experimental research on quasi-optical
antennas capable of transforming high order waveguide modes into
Gaussian beams in free space for microwave transmission and launching
applications.
- Free Electron Lasers:
Novel concepts for the free electron laser including electromagnetic
wave wigglers and microwigglers. Application of the FEL to radar,
plasma heating and biomedicine.
- Plasma Heating:
Heating of plasmas at electron cyclotron resonance using high
power millimeter wave sources such as gyrotrons or FELs. Techniques
for transmitting, polarizing and launching high power electromagnetic
radiation.
- High Magnetic Field,
Nuclear Magnetic Resonance (NMR): Dynamic nuclear polarization
using combined NMR and electron spin resonance (ESR) at high magnetic
fields (5 - 10T) for enhanced imaging. Electron paramagnetic resonance
(EPR) and spin resonance spectroscopy and spin echo at high magnetic
fields.
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Biographical Sketch
Dr. Richard Temkin received a B.A. from Harvard University in 1966,
graduating magna cum laude with Highest Honors in Physics. He then
received a Ph.D. in Physics at MIT in 1971. Dr. Temkin has served
as the associate director of the MIT Plasma Science and Fusion Center
(PSFC) since 1998. He is also the Division Head for the PSFC's Waves
and Beams Division. Awards received include the Robert L. Woods
Award of the U. S. Department of Defense for Vacuum Electronics,
the Certificate of Recognition from the IEEE Electron Device Society,
and the Kenneth J. Button Prize and Medal from the Institute of
Physics. He is a Fellow of the American Physical Society, IEEE,
and the Institute of Physics.
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Selected Publications
"17 GHz photonic band gap cavity with improved input coupling,"
M. A. Shapiro, W. J. Brown, I. Mastovsky, J. R. Sirigiri, and R.
J. Temkin, Phys. Rev. ST Accel. Beams Vol. 4, 042001 (2001).
"ITER R&D: Auxiliary Systems: Electron Cyclotron Heating
and Current Drive System," T. Imai, N. Kobayashi, R. Temkin,
M. Thumm, M. Q. Tran and V. Alikaev, Fusion Engineering and Design,
Volume 55, Issues 2-3, July 2001, Pages 281-289
"Photonic-Band-Gap Resonator Gyrotron," J. R. Sirigiri,
K. E. Kreischer, J. Machuzak, I. Mastovsky, M. A. Shapiro and R.
J. Temkin, Physical Review Letters, Vol. 86, No. 24, pp.
5628-5631 (11 June 2001)
"Low emittance electron beam formation with a 17 GHz RF gun,"
W. J. Brown, S. E. Korbly, K. E. Kreischer, I. Mastovsky, and R.
J. Temkin, Phys. Rev. ST Accel. Beams, Vol. 4, 083501 (2001).
"Experimental investigation of a 140 GHz coaxial gyrotron
oscillator," R. Advani, J. P. Hogge, K. E. Kreischer, M. Pedrozzi,
M. E. Read, J. R. Sirigiri, and R. J. Temkin, IEEE Trans. Plasma
Science, Vol. 29, No. 6, pp. 943-950 (Dec., 2001).
"Simulation of Photonic Band Gaps in Metal Rod Lattices for
Microwave Applications," E. I. Smirnova, C. Chen, M. A. Shapiro
and R. J. Temkin, J. Appl. Phys. Vol. 91, No. 3, pp. 960-968
(1 Feb., 2002).
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