Edward L. Ruden

Research Physicist Resume – updated 06 Nov 2000

 

 

Work Address:

AFRL/DEHP

3550 Aberdeen Ave. SE

Kirtland AFB, NM 87117-5776

 

EMPLOYMENT HISTORY:

1988-Present Research Physicist, GS-12 and (now) DR-II, Air Force Research Laboratory

Since Dr. Ruden received his Ph.D., he has performed research in the area of high energy density plasmas for the Air Force Research Laboratory's High Power Systems Branch, DEHP, and its predecessors. He has developed several interferometric systems for the diagnosis of plasmas using coherent radiation sources across a broad spectrum: millimeter wave, far IR, visible, and UV. Specific plasma geometries that Dr. Ruden has studied (interferometrically and by other means) include a gas-puff Z-pinches, capillary discharge Z-pinches, longitudinally accelerated compact toroids (spheromaks), and high pressure plasmas compressed by electromagnetically imploded solid liners. In addition, he has extensive experience in experimental, analytic, and computational efforts involving continuum dynamics of all phases of matter. Specific accomplishments include the development of fast closing valves using implosions driven electromagnetically (q -pinched) and by chemical explosives, and a cryogenic frozen (from gas) fiber extrusion system to be used as the central target on Sandia National Laboratory’s PBFA Z-pinch for pending neutron production experiments. Dr. Ruden has also performed theoretical work in the high velocity elastoplastic flow of metals which has lead to improvements in the theoretical treatment of the Rayleigh-Taylor instability of strongly accelerated solids.

1983-1988 Research Assistant, University of California, Irvine

Dr. Ruden’s graduate research while pursuing his Ph.D. in Physics was in a plasma physics laboratory where he conducted experimental research on a gas puff Z-pinch machine. His Ph.D. advisor was Prof. Norman Rostoker. His dissertation title is "Magnetic Flux Compression with a Gas Puff Z-Pinch". Laboratory experience gained during this time included development of a gas puff Z-pinch and associated diagnostics, including a UV imaging interferometer, x-ray diode detectors and filters, pinhole cameras, and magnetic field probes. This work included the development and fielding of a numerical image processing system for converting interferograms into phase front distortion maps and other derivable image representations.

1982-1983 Teaching Assistant, University of California, Irvine

Dr. Ruden taught an undergraduate level introductory physics laboratory course during his first year of graduate study.

 

 

1981-1982 Scientific Programmer, Case Western Reserve Univ.

During his last year of undergraduate school, Dr. Ruden wrote a computer code that simulated dynamical failure in fibrous composite materials for Prof. Philip Taylor.

1979-1982 Software Manager, Case Western Reserve Univ.

During most of his residence at CWRU, Dr. Ruden worked for Prof. Richard Hoffman in his surface physics laboratory writing software for various data analysis applications. For example, he wrote a program utilizing a novel peak search and amplitude measurement algorithm to reduce Auger spectroscopic data to plots of elemental composition vs. substrate depth.

EDUCATION:

 

Ph.D.

Physics

University of California, Irvine

1988

M.S.

Physics

University of California, Irvine

1986

B.S.

Physics

Case Western Reserve University

1982

PUBLICATIONS:

  1. Dr. Ruden has been a regular contributor APS’s Dense Plasma Physics conferences since 1984 and IEEE’s Internation Conferences on Plasma Science since 1990. His abstracts appear most of the Bul. Amer. Phys. Soc. Oct. issues, and in the Conference Record Abstracts of the IEEE Internat’l Conf. On Plasma Sci. since these respective years.
  2. E. L. Ruden and D.G. Gale, Explosively Driven Fast Closing Blast Shutter, Rev. Sci. Instrum. 71 (10), 3959-5961, 2000
  3. J.H. Degnan, et.al. Compression of plasma to megabar range using imploding liner, Phys. Rev. Lett. 82, 2681-2684, 1999.
  4. J.H. Degnan, et. al., "Magnetic pressure driven spherical liner implosion experiments" in Current Trends in International Fusion Research (Proc. 2nd Symp.) E. Panarella, ed., 203-207, Nat’l Research Council of Canada, 1999.
  5. E. L. Ruden, G.F. Kiuttu, and R.E. Peterkin, Jr., J.B. Chase, Explosive Axial Magnetic Flux Compression Generator Armature Material Strength and Compression Effects., Proceedings of the VIII'th Megagauss conference, Oct 1998, In Press.
  6. J. H. Degnan, et.al. Interaction of boundary material with magnetized plasma, Proceedings of the VIII'th Megagauss conference, Oct 1998 (In Press).
  7. J.H. Degnan, et. al., "Solid quasi-spherical liner implosions used to compress hot hydrogen working fluid", in Megagauss and Megaampere Pulse Technology and Applications, (MegaGauss VII Conference Proceedings), V.K. Chernyshev, et. al. (editors), Sarov, VNIIEF, 1997.
  8. J.H. Degnan, et. al., "Formation, Compression, and Acceleration of Magnetized Plasmas" in Current Trends in International Fusion Research, E. Panarella, ed., 179-196, Plenum Press, New York, NY, 1997
  9. F.J. Wessel, N. Rostoker, H.U. Rahman, P. Ney, E.L. Ruden, "Thermonuclear Fusion in a Staged Pinch", Current Trends in International Fusion Research, E. Panarella, ed., 333-345, Plenum Press, New York, NY, 1997
  10. E.L. Ruden, D.E. Bell, "Rayleigh-Taylor stability criteria for elastic-plastic solid plates and shells", J.Appl.Phys., 82, 163-170 (1997).
  11. G.F. Kiuttu, et.al., "A 3-MA Compact-Toroid-Plasma-Flow-Switched Plasma Focus Demonstration Experiment on Shiva Star", BEAMS 96 – Proc. Of the 11th Intl. Conf. On High Power Particle Beams (1997).
  12. H.U. Rahman, E.L. Ruden, K.D. Strohmaier, F.J. Wessel, and G. Yur, "Closed cycle cryogenic fiber extrusion system", Rev. Sci. Instrum. 67, 3533-3536 (1996).
  13. J.H. Degnan, et.al., "Electromagnetic Implosion of Spherical Liner", Phys. Rev. Lett., 74, 98-101 (1995).
  14. J.H. Degnan, et.al., "Compression of Compact Toroids in Conical-Coaxial Geometry", Fusion Technology, 27, 107-113 (1995).
  15. E.L. Ruden, S.K. Coffey, J.H. Degnan, J.D. Graham, T.W. Hussey, and M.C. Scott, "New Applications of a Reusable 60 T Pulsed Magnetic Field Coil", Megagauss Magnetic Field Generation and Pulsed Power Applications, M. Cowan and R.B. Spielman, eds. (Proceedings, Megagauss VI, Nova Sciences Publishers, Commack, NY) 317-324 (1994).
  16. J.H. Degnan, et.al., "Conical Compression of Compact Toroids", Megagauss Magnetic Field Generation and Pulsed Power Applications, M. Cowan and R.B. Spielman, eds. 317-324 (1994).
  17. J.H. Degnan, et.al., "Compact Toroid Formation, Compression, and Acceleration", Phys. Fluids B, 5, 2938-2958 (1993).
  18. E.L. Ruden, J.H. Degnan, T.W. Hussey, M.C. Scott, J.D. Graham, and S.K. Coffey, "Time resolved mass flow measurements for a fast gas delivery system", Rev. Sci. Instrum. 64, 1740-1742 (1993).
  19. E.L. Ruden, B.W. Mullins, M.E. Dearborn, and S.K. Coffey, "Interferometry on the compact toroid formation experiments at Phillips Laboratory", Phys. Fluids B, 4, 1800-1805 (1992).
  20. J.H. Degnan, et.al. "Plasma Beam Measurements" (Defense Technical Information Center, Washington, D.C.) AD-E200 962 (1992).
  21. J.H. Degnan, et.al., "Compact Toroid Experiments at the Weapons Laboratory", in S. Ortolani and E. Sindoni, eds., Physics of Alternate Magnetic Confinement Schemes (Società Italiana di Fisica, Bologna, Italy) p. 965 (1991).
  22. E.L. Ruden, "Magnetic Flux Compression with a Gas Puff Z Pinch", Ph.D. Dissertation, UMI 1988.
  23. E. Ruden, H.U. Rahman, A. Fisher, and N. Rostoker, "Stability Enhancement of a Low Initial Density Hollow Gas-Puff Z Pinch by e- Beam Preionization", J. Appl. Phys. 61 1311-1316 (1987).
  24. F. Wessel, F. Felber, N. Wild, A. Fisher, E. Ruden, "Generation of High Magnetic Fields using a Gas-Puff Z Pinch", Appl. Phys. Lett. 48, 1119-1121 (1986).
  25. B. Arad and E. Ruden, "Simple Multi-Spark-Gap Tracer for Z Pinch Experiments", Rev. Sci. Instrum. 55, 1870-1872 (1984).

SOCIETY MEMBERSHIPS, TRAINING CERTIFICATION:

  • Member, APS and IEEE.
  • USAF Explosives Safety Training (Initial) Certified
  • APDP certified, Level II, Systems Planning, Research, Development, and Engineering.
  • UCLA Extension short course in Cryogenic Engineering, registered participant, APR 1990