## Research

**Publications**

Scott Ahlgren, Lars English and Ron Winters. 1997. An Amusing Representation of x/sin (x). *The American Mathematical Monthly*.

K.H. Guber, R.R. Spencer,. P.E. Koehler, R.R. Winters. 1997. Measurements of 142,144Nd(n, ) Cross Sections at ORELA for Astrophysical s-process Studies. *Nuclear Physics A.* v. 621 p. 266-269

P.E. Koehler, R.R. Spencer, R.R. Winters, K.H. Guber, J.A. Harvey, N.W. Hill, M.S. Smith. 1997. New Neutron Capture and Transmission Measurements for 134,136Ba at ORELA and their Impact o s-process Nucleosynthesis Calculations. *Nuclear Physics A*. v. 621 p. 258-261

K.H. Guber, R.R. Spencer, P.E. Koehler, R.R. Winters. 1997. A BaF2 Detector System for (n, ) Cross Section Measurements at ORELA. *Nuclear Physics A* . v. 621 p. 254-257

K.H. Guber, R.R. Spencer, P.E. Koehler, and R.R. Winters. 1997. New 142,144Nd (n,) Cross Sections and the s-process Origin of the Nd Anomalies in Presolar Meteoric Silicon Carbide Grains. *Phys. Rev. Ltrs..* v. 78 no. 14 p. 2704

L.Q. English and R.R. Winters. 1997. Continued Fractions and the Harmonic Oscillator Using Feynman's Path Integrals. *Am. J. of Physics.* v. 65 no. 5 p. 390

P.E. Koehler, R.R. Spencer, R.R. Winters, K. H. Guber, J.A. Harvery, N.W. Hill, M.S. Smith. 1996 . Resonance Neutron Capture and Transmission Measurements and the Stellar Neutron Capture Cross Sections of 134Ba and 136Ba. *Phys. Rev. C.* v. 54 no. 3 p. 1463

Hermann Beer, F. Voss, R.R. Winters. 1992 . On the Calculation of Maxwellian Averaged Capture Cross Sections. *Astrophys. J. Supp..* v. 80 p. 403

R.J. Malcuit, D.M. Mehringer, and R.R. Winters. 1992. A Gravitational Capture Origin for the Earth-Moon System: Implications for the Early History of Earth and Moon. *The Archaean: Terrains, Processes and Metallogeny Publication.* v. 22 p. 223-235

C.H. Johnson, R.F. Carlton, R.R. Winters. 1991. Evidence for Parity Dependence in the Neutron-40Ar Optical Model Potential. *Phys. Rev. C.* v. 44 p. 657

R.R. Winters, R.F. Carlton, C.H. Johnson, N.W. Hill, M.R. Lacerna. 1991. Total Cross Section and Neutron Resonance Spectroscopy for n+40Ar. Phys. Rev. C. v. 43 p. 492

A Fellow of the American Physical Society, his primary research interests are in the area of: Nuclear physics, Astrophysics and the age of the Universe The abundance of chemical elements present in our solar system. He also researches models of the origin of the earth-moon system.

Dr. Winters teaches Classical Mechanics, Quantum Mechanics, General Physics, and Astronomy.

**Invited Papers**

"Computer-Based Symbolic Computation: Not Just for Mathematics Anymore", R.R. Winters, Z.A. Karian, Proceedings of the Seventh Annual International Conference on Technology in College Mathematics, p. 535 (1996)

"Symbolic Manipulators in Undergraduate Physics Courses", R.R. Winters, Program/Abstracts, 159th Nat'l Meeting of the Am. Assoc. for the Advancement of Science, 151, Boston, MA, Feb. 1993.

"Insights: Physical and Mathematical", R. R. Winters, Proceedings of the Denison Conference on the Use of Symbolic Computation in Undergraduate Mathematics, 109, Denison University, June1992.

**Papers**

"High Resolution Neutron Capture and Transmission Measurements and the Stellar Neutron Capture Cross Section of 116,120Sn," P.E. Koehler, R.R. Spencer, K.H. Guber, J.A. Harvey, N.W. Hill, and R.R. Winters, Internat’l Conference on Nuclear Data for Science and Technology, May 19-24, 1997, Trieste, Italy.

"High Resolution Neutron Capture and Transmission Measurements and the Stellar Neutron Capture Cross Section of 116,120Sn," P.E. Koehler, R.R. Spencer, K.H. Guber, J.A. Harvey, N.W. Hill, and R.R. Winters, Bull. Am. Phys. Soc. 42, No. 2 9 83 (1997).

"Predictable Patterns for Tidally-Generated Rhythmites of Archean Age for both Tidal-Capture and Giant-Impact Scenarios", R.J. Malcuit, R.R. Winters, Abstracts with Programs, 1996 Annual Meeting, Geological Society of America, V. 28, No. 7, p. A-227 ( 1996)

"New High Precision Transmission Measurements on 208Pb at ORELA and their Impact on the Electric Polarizability of the Neutron", K.H. Guber, J.A. Harvey, N.W. Hill, P. Riehs, S. Kopecky, and R.R. Winters, Bull. of Am. Phys. Soc., DNP Program 41, No. 5 1236 (1996).

"A Prograde Gravitational Capture Model for the Origin of the Earth-Moon System: Is it compatible with the geological record of earth and moon?", R.J. Malcuit, R.R. Winters, Abstracts, V. 1 of 3, p. 6, 30th International Geological Congress, Augus t 1996.

"Numerical Simulation of Gravitational Capture Scenarios for Planets Venus and Earth: Implications for the contrasting thermal histories of these planets", R.J. Malcuit, R.R. Winters, Abstracts, V. 3 of 3, p. 506, 30th International Geological Congre ss, August 1996.

"A BaF2 Detector System for (n, ) Cross Section Measurements at ORELA", K.H. Guber, R.R. Spencer, P.E. Koehler and R.R. Winters, presented at Nuclei in the Cosmos IV, Notre Dame, IN, June 1996.

"New (n, ) and Total Cross Section Measurements for 134,136Ba and their Impact on s-process Nucleosynthesis Calculations", P.E. Koehler, R.R. Spencer, R.R. Winters, K. H. Guber, J. A. Harvey and N. W. Hill, presented at Nuclei in the Cosmos IV, Notre Dame, IN, June 1996.

"Measurements of 142,144Nd(n, ) Cross Sections at ORELA for Astrophysical s-Process Studies", K.H. Guber, R.R. Spencer, P.E. Koehler, and R.R. Winters, presented at Nuclei in the Cosmos IV, Notre Dame, IN, June 1996.

"Symbolic Computation in Classical and Quantum Mechanics Courses", R. R. Winters, Div. C Symposium - Symbolic computation in undergraduate science instruction, Am. Educational Research Assoc., 1996 Annual Meeting Program, p. 68, April 1996.

"Geometry of Stable Capture Zones for Planet Earth: Potential for calculation of the probabilities of gravitational capture of satellites", R.J. Malcuit, R.R. Winters, Ohio Journal of Science, April Program Abstracts, 96, No. 2, A-30 (1996).

"Evolution of the Earth-Moon System: Can the geological record of tidal deposits be used to distinguish between giant-impact and tidal capture scenarios?", R.J. Malcuit, R.R. Winters, Abstracts, Tidalites ‘96, International Conference on Tidal Sedimentology, p.67-68 (1996).

"Geometry of Stable Capture Zones for Planet Earth and Implications for Estimating the Probability of Stable Gravitational Capture of Planetoids from Heliocentric Orbit", R.J. Malcuit, R.R. Winters, Abstract Volume, Part 2, 27th Lunar and Planetary Science Conference, p. 799-800 (1996).

"Maple, Quarks, and a Pedagogical Disappointment", R.R. Winters, Bull. of Am. Phys. Soc., Transactions B 40 No. 14, 2101 (1995).

"Science Instruction Through the Use of Maple", R.R. Winters and Z.A. Karian, The Eighth Annual International Conference on Technology in Collegiate Mathematics, ICTCM Program, p. 36 November 1995.

"Planetoid Capture Models: Implications for the Great Contrast in Planetological Features of Planets Venus and Earth", R.J. Malcuit, R.R. Winters, Abstracts with Programs, 1995 Annual Meeting, Geological Society of Am., V. 27, No.7, p. A208 (1995).

"A BaF2 Detector for (n, ) Cross Section Measurements for Astrophysical s-process Studies", R.R. Winters, K.H. Guber, R.R. Spencer et al., Bull. Am. Phys. Soc. DNP Program 40 No. 10, 1627 (1995).

"142,144Nd(n, ) Cross Sections for Astrophysical s-process Studies", K.H. Guber, R.R. Spencer, R.R. Winters, et al., Bull. Am. Phys. Soc. DNP Program 40 No. 10, 1627 (1995).

"134,136Ba Neutron Total Cross Section Measurements for s-process Studies", P.E. Koehler, J.A. Harvey, N.W. Hill, R.R. Winters et al., Bull. Am. Phys. Soc. DNP Program 40 No. 10, 1627 (1995).

"134,136Ba(n, ) Cross Sections for s-process Studies", R.R. Spencer, R.R. Winters, K.H. Guber et al. Bull. Am. Phys. Soc. DNP Program 40 No. 10, 1628 (1995).

"Calculation of Stellar-Averaged Neutron Capture Cross Sections Directly from Evaluated Nuclear Data File", N.M. Larson, D.C. Larson., M.S. Smith, A.R. Braeutigam, R.R. Winters, Bull. Am. Phys. Soc. DNP Program 40 No. 10, 1628 (1995).

"Numerical Simulation of Retrograde Gravitational Capture of a Satellite by Venus: Implications for the Thermal History of the Planet", R.J. Malcuit, R.R. Winters, Abstract Volume, 26th Lunar and Planetary Science Conference p. 885-886 (1995).

"Numerical Simulation of Terrestrial Tidal-Thermal Effects of Lunar Orbital Evolution for Tidal-Capture and Giant-Impact Scenarios: Implications for Precambrian Tectonics", R.J. Malcuit, R.R. Winters, Abstracts with Programs, 1994 Annual Meeting, Geological Society of Am., V. 26, p. A-425 (1994).

"Statistical Tests of the Resonance Parameters Derived from a Measurement of 208Pb Neutron Total Cross Section", R.R. Winters and R.F. Carlton, Bull. of Am. Phys. Soc., Transactions, A 39, No. 3 1290 (1994).

"Computer-Based Symbolic Computing Can Promote Discovery", G. Jewell, D. Rinehart, C. Swanson, and R.R. Winters, Bull. of Am. Phys. Soc., Transactions, A 39, No. 3 1297 (1994).

"Origin and Evolution of the Earth-Moon System: Can the various models be tested by way of the Archean sedimentary rock record?", R.J. Malcuit and R.R. Winters, Ohio Journal of Science, April Program Abstracts 94, No. 2, 29 (1994).

"Numerical Simulation of Tidal Capture of a Lunar-Mass Planetoid by an Earth-like Planet: Two dimensional limits of a prograde stable capture zone," Abstract Volume, 25th Lunar and Planetary Science Conference p. 829-830 (1994).

"Origin and Evolution of the Earth-Moon System: Can the Archean sedimentary rock record be used to distinguish between giant-impact and tidal-capture scenarios?", R.J. Malcuit and R.R. Winters, Abstracts with Programs, 1993 Annual Meeting, Geological Society of America, V. 25, No. 6, p. A388 (1993).

"Origin and Evolution of the Earth-Moon System: Are models testable via the Archean Stratigraphic record?", R.J. Malcuit and R.R. Winters, Abstracts with Programs, Society for Sedimentary Geology Topical Conference: Stratigraphic Record of Global Change, p. 27 (1993).

"Numerical Simulation of Tidal Capture of a Lunar-Mass Planetoid by an earth-mass planet: Dimensions of two prograde and one retrograde stable capture orientations", R.J. Malcuit and R.R. Winters, Poster Paper presented at Gordon Conference: "Origins of Solar Systems" in New London, NH, July, 1993.

"Numerical Simulation of Tidal Capture of a Lunar-Mass Planetoid by an Earth-Mass Planet: Dimensions of Two Prograde and One Retrograde Stable Capture Orientations", R.J. Malcuit and R.R. Winters, presented at Spring Meeting of Am. Geophys. Union, EOS Supp., Baltimore, MD, p. 192, May 1993.

"A Spherical Optical Model Potential for n+208Pb Near Neutron Binding", R.R. Winters, R.F. Carlton, Bull. Am. Phys. Soc. 38, No. 7 1661 (1993).

"Calculation of the 58Ni+n Maxwellian-Averaged Cross Section Over the Energy Region of Stellar Nucleosynthesis," R.R. Winters, Bull. Am. Phys. Soc. 38, No. 7 1654 (1993).

"Gravitational Capture of a Lunar-Like Planetoid by an Earth-Like Planet: Geometry of Stable Capture Orientations", R.J. Malcuit and R.R. Winters, Ohio J. of Science, April Program Abstracts, Youngstown State University, 93, No. 2, 39 (1993)

"Tidal Regime of Intact Planetoid Capture Model for the Earth-Moon System: Does It Relate to the Archean Sedimentary Rock Record?" R.J. Malcuit and R.R. Winters, Abstracts, 24th Lunar and Planetary Science Conference, 923 (1993).

"Using a Symbolic Manipulator in an Undergraduate Quantum Mechanics Course", R.R. Winters, Bull. Am. Phys. Soc. 37, No. 9 1888 (1992).

"The Use of a Symbolic Manipulator in an Undergraduate Classical Mechanics Course," R.R. Winters and Z.A. Karian, Bull. Am. Phys. Soc. 37, No. 9 1885 (1992).

"The Maxwellian-Averaged Neutron Capture Cross Section for 16O," R.R. Winters, Bull. Am. Phys. Soc. 37, No. 9 1878 (1992).

"Comparison of the Calculation of the 16O Maxwellian-Averaged Neutron Capture Cross Section Using MAXWL and Maple," R.R. Winters, Bull. Am. Phys. Soc. 37, No.7 1676 (1992).

"The Archean-Proterozoic Transition: Could it be associated with a lunar orbital circularization sequence that is characteristic of a tidal capture model for the origin of the Earth's Moon?", R.J. Malcuit, R.R. Winters, Abstracts with Program, Geol. S oc. of Am. 24, No. 7 A178 (1992).

"Numerical Simulation of Tidal Capture of a Triton-Mass Body by Neptune: Dimensions of a Two-Dimensional Retrograde Stable Capture Zone", R.J. Malcuit, D.M. Mehringer, and R.R. Winters, Trans., Am. Geophys. Union 73, 191 No. 14, Spring Meeting EOS Su pp. (1992).

"The Lunar Capture Model and the Predicted Tidal Regime of the Archean," R.J. Malcuit and R.R. Winters, Ohio J. of Science, April Program Abstracts, at Akron Univ. 92, 19 (1992).

"Numerical Simulation of Retrograde Tidal Capture of a Triton-like Planetoid by a Neptune-like Planet: Two-dimensional Limits of a Stable Capture Zone", R.J. Malcuit, D.M. Mehringer, and R.R. Winters, Abstracts, 23rd Lunar and Planetary Science Conference, 827 (1992).

"Recalculation of the 16O Maxwellian-Averaged Neutron Capture Cross Section Over the Energy Region of Stellar Nucleosynthesis", R.R. Winters, H. Beer, F. Voss, Bull. Am. Phys. Soc. 37 No. 2, 869 (1992).

"Numerical Simulation of the Tidal Effects of an Intact Gravitational Capture Model for the Origin of the Earth-Moon System: Implications for the Archean Sedimentary Rock Record", R.J. Malcuit, and R.R. Winters, Abstracts with Programs for National Meeting (San Diego), Geol. Soc. of Am. 23 No. 5, A453 (1991).

"Numerical Simulation of Retrograde Tidal Capture of a Triton-like Planetoid by Neptune", R.J. Malcuit, D.M. Mehringer, R.R. Winters, presented at a Gordon Conference on the topic of Origins of Solar Systems, July 1991.

"Numerical Simulation of Retrograde Tidal Capture of a Triton-like Planetoid by Neptune", R.J. Malcuit, D.M. Mehringer, R.R. Winters, Trans., Am. Geophys. Union (Baltimore), 72, 185 (1991).

"s- and p-wave Strength Functions and Level Densities in n+208Pb", R.R. Winters, R.F. Carlton, J.A. Harvey, N.W. Hill, Joerg Schmiedmayer, C.H. Johnson, Bull. Am. Phys. Soc. 36 No. 5, 1693 (1991).

"Numerical Simulation of Planetoid Capture by an Earth-Like Planet: Effect of the Mass of the Planetoid", R.J. Malcuit, D.M. Mehringer, R.R. Winters, Ohio Journal of Science, April Program Abstracts 91 No. 2, 34 (1991).

"R-Matrix Analysis of an ORELA Measurement of the n+208Pb Total Cross Section from 78 to 1700 keV", R.F. Carlton, R.R. Winters, J.A. Harvey, N.W. Hill, C.H. Johnson, J. Schmiedmayer, Bull. Am. Phys. Soc. 36 No. 4, 1349 (1991).

"Dispersive Optical Model Potential for n+40Ar", R.R. Winters, C.H. Johnson, R.F. Carlton, Bull. Am. Phys. Soc. 36 No. 4, 1349 (1991).

"Solid-Earth and Ocean Tidal Eras Associated with a Stable Gravitational Capture Scenario", R.J. Malcuit, D.M. Mehringer, R.R. Winters, Abstracts with Programs, Geo. Soc. Am., North-Central Section, 23 No. 3, 26 (1991).

"Level Densities and Neutron Strength Functions in n+40Ar", R.R. Winters, R.F. Carlton, Bull. Am. Phys. Soc. 36 No. 1, 118 (1991).

"Numerical Simulation of Retrograde Tidal Capture of a Triton-like Planetoid by a Neptune-like Planet", R.J. Malcuit, D.M. Mehringer, R.R. Winters, Abstracts, 22nd Lunar and Planetary Science Conf., 845 (1991).

"A Gravitational Capture Origin for the Earth-Moon System: Implications for the Early History of Earth and Moon," R.J. Malcuit, D.M. Mehringer, R.R. Winters Extended Abstracts Volume, 3rd Intern'l Archaean Symposium, Geoconferences, Glover & Ho, eds., (Western Australia) Inc. Perth, 7-8 (1990).

"Numerical Simulation of Planetoid Capture by an Earth-like Planet and Subsequent Orbital Evolution: Implications for the Primitive Earth", R.J Malcuit, D.M Mehringer, R.R. Winters, Abstracts with Programs, Geo. Soc. Am. 22 No. 7, A218 (1990).

"Numerical Simulation of Planetoid Capture: Identification of Some Favorable Capture Orientations", R.J. Malcuit, D.M. Mehringer, R.R. Winters, Trans., Am. Geophys. Union 71, 551 (1990).

"Intact Planetoid Capture: Identification of Some Favorable Capture Orientation for a Lunar-like Planetoid", R.J. Malcuit, D.M. Mehringer, R.R. Winters, Abstracts, 21st Lunar and Planetary Science Conf, 730 (1990).

"Origins of the Earth's Moon by Intact Capture: Identification of Some Favorable Capture Orientations", R.J. Malcuit, D.M. Mehringer, R.R. Winters, Ohio J. of Science, April Program Abstracts, 90 No. 2, 10 (1990).