VITA

NAME:

L. David Roper: http://arts.bev.net/roperldavid

ACADEMIC RANK:

Professor Emeritus

DEPARTMENT:

Physics, Virginia Polytechnic Institute and State University
(Virginia Tech)

Contents: Professional Societies | Public Service | Books | Particle Physics Pubs
Biophysics Pubs | Interdisciplinary Pubs/Web Pages | Teaching Pubs

FIELDS OF INTEREST:

Elementary Particle Physics (Particle scattering phenomenology)

Computational Physics

Future Studies (Resource depletion)

DEGREES:

A.B. with Honors (Physics & Math; Chemistry minor)

Profile in Excellence Award 1985

Oklahoma Baptist University (1958)

Ph.D. (Theoretical Physics)

Massachusetts Institute of Technology (1963)

PROFESSIONAL EXPERIENCE

  • 1958-62: Teaching Assistant, Physics Department, Massachusetts Institute of Technology, Cambridge, Massachusetts
  • 1959-60(summers): Research Physicist, Sandia Corporation, Albuquerque, New Mexico
  • 1962-63(summers): Research Physicist, Lawrence Radiation Laboratory, Livermore, California
  • 1962-63: Instructor, Physics Department, Eastern Nazarene College, Quincy, Massachusetts
  • 1962-63: Research Assist., Physics Department, Massachusetts Institute of Technology, Cambridge, Massachusetts
  • 1963-65: Postdoctoral Appointee, Lawrence Radiation Laboratory, Livermore, California
  • 1965-67: Assistant Professor, Physics Department, Kentucky Southern College, Louisville, Kentucky
  • 1967-70: Assistant Professor, Physics Department, Virginia Polytechnic Institute and State University, Blacksburg, Virginia
  • 1970-74: Associate Professor, Physics Department, Virginia Polytechnic Institute and State University, Blacksburg, Virginia
  • 1973-74: Research Physicist, International Centre for Theoretical Physics, Trieste, Italy; CERN, Geneva, Switzerland; University of Glasgow, Glasgow, Scotland
  • 1974-98: Professor, Physics Department, Virginia Polytechnic Institute and State University, Blacksburg, Virginia
  • 1977-78: Acting Head, Physics Department, Virginia Polytechnic Institute and State University, Blacksburg, Virginia
  • 1980-81: Visiting Professor, KEK National Laboratory for High Energy Physics, Oho, Tsukuba, Ibaraki, Japan
  • 1983: Visiting Senior Lecturer, University of Papua New Guinea,  Port Moresby: Papua New Guinea
  • 1984: Associate Director for Academic Computing, Computing Center, Virginia Polytechnic Institute and State University, Blacksburg, Virginia
  • 1987-88: Visiting Professor, Department of Physics, Universidade Federal de Goiás, Goiânia, Goiás, Brasil
  • 1990-94: Head, Physics Department, Virginia Polytechnic Institute and State University, Blacksburg, Virginia
  • 1996-98: Pre-retirement leave at half pay with no duties.

PROFESSIONAL SOCIETIES

  • Fellow of American Physical Society
  • American Association of Physics Teachers
    • Chairman of Committee on Physics in Higher Education 1978-1980
    • Associate Editor of American Journal of Physics 1979-82

PUBLIC SERVICE

 

BOOKS

  • The Dirac Delta Function in Physics: A Programmed Booklet and Reference Document for Students, L. D. Roper, Commission on College Physics, American Institute of Physics, N.Y., 1971.
  • The Dirac Delta Function in Physics with Applications, L. D. Roper, University Publications, Blacksburg, Virginia, 1972.
  • Simple Membrane Electrodiffision Theory, R. A. Arndt and L. D. Roper, University Publications, Blacksburg, Virginia, 1972.
  • The Metals and Mineral Fuels Crises: Facts and Predictions, R. A. Arndt and L. D. Roper, University Publications, Blacksburg, Virginia, 1976.  (book and three audiocassettes)
  • Where Have All the Metals Gone?, L. D. Roper, University Publications, Blacksburg, Virginia, 1976.
  • The Depletion of United States and World Mineral Resources, R. A. Arndt and L. D. Roper, University Publications, Blacksburg, Virginia, 1977

 

PARTICLE PHYSICS PUBLICATIONS

  • Pion-Nucleon Phase-Shift Analysis, B. T. Feld and L. D. Roper, Proceedings of the Siena International Conference on Elementary Particles, Italian Phys. Soc., Bologna, p. 400 (1963).
  • Evidence for a P11 Pion-Nucleon Resonance at 556 MeV, L. D. Roper, Phys. Rev. Letters 12, 340 (1964).
  • Energy-Dependent Pion-Nucleon Phase-Shift Analysis, L. D. Roper, R. M. Wright and B. T. Feld, Phys. Rev. 139, B190 (1965).
  • Pion-Nucleon Phase-Shift Analysis: 0-350 MeV, L. D. Roper and R. M. Wright, Phys. Rev. 138, B921 (1965).
  • Review of the Pion-Nucleon Experimental Situation and its Phase-Shift Interpretation, V. Perez-Mendez and L. D. Roper, Lectures in Theoretical Physics, Vol. VIIB-Elementary Particles, Univ. of Colorado Press, Boulder, p. 452 (1965).
  • Pion-Nucleon Phase-Shift Analyses, L. D. Roper, Proceedings of the Williamsburg Conference on Intermediate Energy Physics, The College of William and Mary, Williamsburg, Va., Vol. II, p. 495 (1966).
  • Comparison of Recent Pion-Nucleon Phase-Shift Analyses, L. D. Roper, Forts. der Phys. 14, 305 (1966).
  • Spin Rotation Parameters and Phase-Shift Ambiguities in Pion-Nucleon Scattering, L. D. Roper and D. S. Bailey, Phys. Rev. 155, 1744 (1967).
  • K®2p Phenomenology and Small CP Nonconservation, L. D. Roper, Phys. Rev. 176, 2120 (1968).
  • Deuteron Constraints on Low-Energy Nucleon-Nucleon Scattering Analyses, R. A. Arndt and L. D. Roper, Phys. Rev. D1, 129 (1970).
  • Elastic Neutron-Alpha Scattering Analyses, R. A. Arndt and L. D. Roper, Phys. Rev. C1, 903 (1970).
  • Analyses of Elastic Proton-Alpha Scattering, R. A. Arndt, L. D. Roper and R. L. Shotwell, Phys. Rev. C3, 2100 (1971).
  • Phenomenology of K®2p Decays, M. C. Rasmussen and L. D. Roper, Phys. Rev. D4, 1401 (1971).
  • Comparison of Princeton-Pennsylvania np Scattering Data by Phase Shift Analyses, R. A. Arndt and L. D. Roper, Phys. Rev. Letters 26, 1260 (1971)       
  • Comparison of Various Partial-Wave Analyses in the Region 0-1400 MeV/c, M. L. Gupta, R. A. Arndt and L. D. Roper, Forts. der Phys. 20, 333 (1972).
  • A Multichannel Look at the Available Partial-Wave Analyses of the System in the Region 0-1400 MeV/c, M. L. Gupta, R. A. Arndt and L. D. Roper, Nuc. Phys B37, 173 (1972).
  • Polarization Measurements and Analysis in n-a Scattering from 11.0 to 30.3 MeV, W. B. Broste, G. S. Mutchler, J. E. Simmons, R. A. Arndt and L. D. Roper, Phys. Rev. C5, 761 (1972).
  • The Use of Partial-Wave Representations in the Planning of Scattering Measurements: Application to 300 MeV np Scattering, R. A. Arndt and L. D. Roper, Nucl. Phys. B50, 285 (1973).
  • Nucleon-Alpha Elastic Scattering Analyses I. Low-Energy n-a and p-a Analyses, R. A. Arndt, D. D. Long and L. D. Roper, Nuc. Phys. A209, 429 (1973).
  • Nucleon-Alpha Elastic Scattering Analyses II.  0 to 21 MeV Energy-Dependent n-a Analysis, R. A. Arndt and L. D. Roper, Nucl. Phys. A209, 447 (1973)
  • Application of the ACE Method to Pion-Nucleon Scattering, R. A. Arndt, R. H. Hackman and L. D. Roper, Phys. Rev. Letters 32, 31 (1974).
  • Nucleon-Nucleon Scattering Analyses I. Proton-Proton Scattering from 1 to 500 MeV, R. A. Arndt, R. H. Hackman and L. D. Roper, Phys. Rev. C9, 555 (1974)
  • Effects of Coulomb Rotation on the pp Forward Scattering Amplitude from 0-500 MeV, R. A. Arndt, R. H. Hackman and L. D. Roper, Phys. Rev. C9, 2050 (1974).
  • Resonance Pole with , in a Coupled Channel Analysis of K+-p Elastic Scattering Data, A. Arndt, R. H. Hackman, L. D. Roper and P. H. Steinberg, Phys. Rev. Letters 33, 987 (1974).
  • The Development of Pion-Nucleon Scattering Analysis: A Personal History of Discovery, R. Gordon Moorhouse and L. David Roper: http://arts.bev.net/roperldavid/roperres.htm
  • Nonleptonic Decays of Hadrons and the Rule, R. A. Arndt and L. D. Roper, Phys. Rev. D11, 4471 (1975).
  • Nucleon-Nucleon Scattering Analyses II. Neutron-Proton Scattering from 0 to 425 MeV and Proton-Proton Scattering from 1 to 500 MeV, R. A. Arndt, R. H. Hackman and L. D. Roper, Phys. Rev. C15, 1002 (1977).
  • Nucleon-Nucleon Scattering Analyses III. np Phase-Shift Analyses Complex Structure and Multiple Solutions at 50 MeV and 325 MeV R. A. Arndt, R. H. Hackman and L. D. Roper, Phys. Rev. C15, 1021 (1977).
  • The Mass Splitting from Pion-Nucleon Partial-Wave Analyses, V. S. Zidell, R. A. Arndt and L. D. Roper, Lettere al Nuovo Cimento, 21, 140 (1978).
  • K+-p Scattering Analysis to 2 GeV/c, R. A. Arndt, L. D. Roper and P. H. Steinberg, Phys. Rev. D18, 3278 (1978).
  • Pion-Nucleon Phase-shift Analysis: 0-350 MeV, V. S. Zidell, R. A. Arndt and L. D. Roper, Phys. Rev. D21, 1255 (1980).
  • Determination of the Pion-Nucleon Scattering Lengths from Partial-Wave Analyses, V. S. Zidell, R. A. Arndt and L. D. Roper, Phys. Rev. D21, 1289 (1980).
  • Existence of Dibaryon Resonances in I=1 and Nucleon-Nucleon Scattering, Bhandari, R. A. Arndt, L. D. Roper and B. J. VerWest, Phys. Rev. Letters 46, 1111 (1981).
  • Parametrizing the Nucleon-Nucleon Scattering Matrix above the Inelastic Threshold, R. A. Arndt and L. D. Roper, Phys. Rev. D25, 2011 (1982).
  • Review of Particle Properties (Particle Data Group), M. Roos, F. C. Porter, M. Aguilar-Benitez, Montanet, Ch. Walck, R. L. Crawford, R. L. Kelly, A. Rittenberg, T. G. Trippe, G. Wohl, G. P. Yost, T. Shimada, M. J. Losty, G. P. Gopal, R. E. Hendrick, R. E. Schrock, R. Frosch, L. D. Roper, B. Armstrong, Phys. Lett. 111B, (1982).
  • Elementary Particle Resonances from a Semiclassical Perspective, R. A. Arndt and L. D. Roper, Am. J. Phys. 51, 418 (1983).
  • Nucleon-Nucleon Partial-Wave Analysis to 1 GeV, R. A. Arndt, L. D. Roper, R. A. Bryan, R. B. Clark, B. J. VerWest and P. Signell, Phys. Rev. D28, 97-122 (1983).
  • Review of Particle Properties (Particle Data Group), C. G. Wohl, R. N. Cahn, A. Rittenberg, T. G. Trippe, G. P. Yost, F. C. Porter, J. J. Hernandez, L. Monanet, R. E. Hendrick, R. L. Crawford, M. Roos, N. A. Törnqvist, G. Höhler, M. Aguilar-Benitez, T. Shimada, M. J. Losty, G. P. Gopal, Ch. Walck, R. E. Shrock, R. Frosch, L.D. Roper, W. P. Trower, B. Armstrong, Rev. Mod. Phys. 56, Part II (1984).
  • K+-Proton Partial-Wave Analysis to 3 GeV/c, R. A. Arndt and L. D. Roper, Phys. Rev. D31, 2230-2241 (1985).
  • Pion-Nucleon Partial-Wave Analysis to 1100 MeV, R. A. Arndt, John M. Ford and L. D. Roper, Phys. Rev. D32, 1085-1103 (1985).
  • Review of Particle Properties (Particle Data Group), M. Aguilar-Benitez, F. C. Porter, J. J. Hernandez, L. Montanet, R. L. Crawford, G. Höhler, R. M. Barnett, A. Rittenberg, T. G. Trippe, C. G. Wohl, G. P. Yost, B. Armstrong, G. S. Wagman, T. Shimada,P. Gopal, J. Primack, K. G. Hayes, R. H. Schindler, R. E. Shrock, R. A. Eichler, R. Frosch, L. D. Roper and W. P. Trower, Phys. Letters 170B (1986).
  • Nucleon-Nucleon Partial-Wave Analysis to 1100 MeV, R. A. Arndt, John S. Hyslop III and L. D. Roper, Phys. Rev. D35, 128-144 (1987).
  • Review of Particle Properties (Particle Data Group), G. P. Yost, R. M. Barnett, I Hinchliffe, G. R. Lynch, A. Rittenberg, M. Suzuki, T. G. Trippe, C. G. Wohl, B. Armstrong, G. S. Wagman, F. C. Porter, L. Montanet, M. Aguilar-Benitez, J. J. Hernandez, G. Conforto, R. L. Crawford, K. R. Schubert, M. Roos, N. A. Törnqvist, G. Höhler, K. Hagiwara, S. Kawabata, D. M. Manley, K. A. Olive, K. G. Hayes, R. H. Schindler, J. Cabrera, R. E. Shrock, R. A. Eichler, L. D. Roper and W. P. Trower, Phys. Letters 204 (1988).
  • Scattering in a Spherical Potential: Motion of Complex-Plane Poles and Zeros, R. A. Arndt and L. D. Roper, Computers in Phys. 3, 65-72 (1989).
  • Determination of the pNN Coupling Constant from Elastic Pion-Nucleon Scattering Data, R. A. Arndt, Z. Li, L. D. Roper and R. L. Workman, Phys. Rev. Letters , 157-158 (1990).
  • Partial-Wave Analysis of Pion Photoproduction, R. A. Arndt, R. L. Workman, Z. Li and L. D. Roper, Phys. Rev. C42, 1853-1863 (1990).
  • Pion Photoproduction Resonance Couplings in the Second Resonance Region, R. A. Arndt, R. L. Workman, Z. Li and L. D. Roper, Phys. Rev. C42, 1864-1866 (1990).
  • Pion-Nucleon Partial-Wave Analysis to 2 GeV, R. A. Arndt, Z. Li, L. D. Roper, R. L. Workman and J. M. Ford, Phys. Rev. D43, 2131 (1991).
  • Pion-Nucleon Coupling Constant, R. A. Arndt, Z. Li, L. D. Roper and R. L. Workman, Phys. Rev. D44, 289-290 (1991).
  • Resonance Photon-Decay Amplitudes, Z. Li, R. A. Arndt, L. D. Roper and R. L. Workman, Hadron '91 Conference proceedings.
  • Determination of Pi-N coupling constant from elastic pion-nucleon scattering data, R. A. Arndt, Z. Li, L. D. Roper and R. L. Workman, Phys. Rev. Lett. 68, 549- (1992).
  • Nucleon-nucleon partial-wave analysis to 1.6 GeV, R. A. Arndt, L. D. Roper, R. L. Workman and M. W. McNaughton, Phys. Rev. D45, 3995-4001 (1992).
  • Partial-wave analysis of K+-nucleon scattering, J. S. Hyslop, R. A. Arndt, L. D. Roper, and R. L. Workman, Phys. Rev. D46, 961-969 (1992).
  • Resonance photodecay amplitudes to 1.8 GeV, Z. Li, R. A. Arndt, L. D. Roper, and R. L. Workman, Phys. Rev. D47, 2759-2763 (1993).
  • Dick Arndt's contribution to pion-nucleon scattering analyses, L. David Roper, 6th International Workshop on Pion/Nucleson Partial-Wave Analysis and the Interpretation of Baryon Resonances, 23-27 May 2011, Georgetown University, Washington, DC

 

BIOPHYSICS PUBLICATIONS

  • An Exact Constant-Field Solution for a Simple Membrane, R. A. Arndt, J. D. Bond and L. D. Roper, Biophys. J. 10, 1149 (1970).
  • Nerve Radiation and the Dipole Model, R. A. Arndt and L. D. Roper, Biophys. J. 10, 1125 (1970).
  • Numerical Solution of Steady-State Electrodiffusion Equations for a Simple Membrane, R. A. Arndt, J. D. Bond and L. D. Roper, Biophys. J. 11, 265 (1971).
  • Theory of Initial Current Density in Membrane Voltage-Clamp Experiments, R. A. Arndt and L. D. Roper, Bull. Math. Biophys. 34, 45 (1972).
  • A Fit to Nerve Membrane Rectification Curves with a Double-Dipole-Layer Membrane Model, R. A. Arndt, J. D. Bond and L. D. Roper, Bull. Math. Biophys. 34, 151 (1972).
  • Electroneutral Approximate Solution of Steady-State Electrodiffusion Equations for a Simple Membrane, R. A. Arndt, J. D. Bond and L. D. Roper, J. Theor. Biol. 34, 265 (1972).
  • Quantitative Comparison of Dipole Models for Steady-State Currents in Excitable Membranes, R. A. Arndt and L. D. Roper, Bull. Math. Biophys. 34, 305 (1972).
  • Numerical Solution of Time-Dependent Electrodiffusion Equations for a Simple Membrane, R. A. Arndt and L. D. Roper, Math. Biosci. 16, 103 (1973).
  • A New Phenomenology for Squid Axon Voltage-Clamp Currents, R. A. Arndt and L. D. Roper, J. Theor. Biol. 48, 373 (1974).
  • Theory of Excitable Membranes I. A Simple Model for a Three-State Artificial Membrane, R. A. Arndt and L. D. Roper, J. Theor. Biol. 54, 249 (1975).
  • Voltage-Clamp Experiments on Oxidized Cholesterol Membranes Modified with Excitability-Inducing Material and Comparison with a Model, R. A. Hoffman, D. D. Long, R. A. Arndt and L. D. Roper, Biochim. Biophys. Acta 455, 780 (1976).

 

INTERDISCIPLINARY PUBLICATIONS/INTERNET SITES

 

TEACHING PUBLICATIONS AND REPORTS

  • Is Physics a Sacred Cow?, L. D. Roper, The Southern Baptist Educator 30, No. 7, 7 (1966).
  • Personalized Instruction with Bootstrap Tutors in an Introductory Biophysics Course, L. D. Roper, Amer. J. Phys. 42, 27 (1974).
  • Pringle's Fly Wing Mechanism, F. T. McDuffee, L. D. Roper and R. W. Ross, Amer. J. Phys. 45, 303 (1977).
  • PSI Quantum Mechanics with Optional Lectures on Videocassettes, L. D. Roper, R. A. Braden and J. T. Head, Amer. J. Phys. 45, 476 (1977).
  • The Personalized System of Instruction, J. T. Head and L. D. Roper, Teaching and Learning, VPI&SU, Winter, 1977.
  • Videocassettes-the Ever-Ready Lecturer, L. D. Roper, Change Report on Teaching 5: 10, No. 1, 66 (January, 1978). (Also in Guide to Effective Teaching, p. 118, Change Magazine Press, N.Y., 1978.)
  • Elementary particle Resonances from a Semiclassical Perspective, R. A. Arndt and L. D. Roper, Amer. J. Phys. 53, 418 (1983).
  • Classical Scattering Patterns of a Central Potential, R. A. Arndt and L. D. Roper, Amer. J. Phys. 54, 614-618 (1986).
  • PC Software Adds Color to Physics Lectures, R. A. Arndt and L. D. Roper, Computers in Phys. 2, 62-66 (1988).
  • Physics Simulations for High-Resolution Color Microcomputers, R. A. Arndt and L. D. Roper, The Conference on Computers in Physics Instruction Proceedings, Edward F. Redish and John S. Risley, Editors, Addison-Wesley Pub. Co., Reading, MA, pp. 100-108, 1990.
  • Using Computers for Departmental Management and Faculty Development, L. D. Roper,
  • Ninth Annual Conference Academic Chairpersons: Celebrating Success, Vol. 39, National Issues in Higher Education, Kansas State Univ., Manhattan, KS, pp. 170-179, 1992.
  • Departmental Management with Computers, L. D. Roper, The Departmental Chair, 3, #3, pp. 8-11,Winter 1993.
  • Physics Simulations, R. A. Arndt and L. D. Roper