Center for Directed Energy (CDE)

Center for Directed Energy (CDE)
AFIT Faculty: Dr. David E. Weeks
CONTACT INFORMATION
Name: Dr. David E. Weeks
Title: Department of Engineering Physics
Commercial Phone: 937-255-3636 (4561)
DSN Phone: 785-3636 (4561)
EDUCATION

Ph.D., Physics, University of Arkansas, Fayetteville, Arkansas, May 1989, Dissertation: “Symmetry Analysis and Spectroscopy of Icosahedral Molecules” with W.G. Harter

M.S., Physics, Georgia Institute of Technology, Atlanta, Georgia, December 1985

B.A., With Honors, Physics, Colgate University, Hamilton, New York, May 1983, Honors Thesis: “The Aharonov - Bohm Effect” with J. Dodd

RESEARCH INTERESTS

Atomic and Molecular Physics: Wave packet propagation, reactive scattering, non-adiabatic chemistry, molecular reaction dynamics, Rovibrational dynamics and spectroscopy of polyatomic molecules, high resolution molecular spectroscopy, molecular symmetry, rotation-vibration coupling, non-linear dynamics, C60.

Computer graphics: OpenGL Software development for animation and visualization of complex molecular dynamics.

Mathematical Physics: Applied group theory.

Condensed Matter Physics: Envelope function theory, quantum well structures.

EXPERTISE
  • ATOMIC AND MOLECULAR SPECTROSCOPY
  • COMPUTATIONAL PHYSICS
  • MOLECULAR REACTION DYNAMICS
PUBLICATIONS & RESEARCH PAPERS

Refereed publications:

27. T.A. Niday (GAP-99M), S.H. Yang (PostDoc), and D.E. Weeks, “Scattering Matrix Elements for the Reaction B (2P1/2) + H2 (j = 0)¿B(2P3/2) + H2 (j = 0, 2, 4, 6),” accepted by J. Chem Phys.

26. D.E. Weeks, S.H. Yang (PostDoc), M.R. Gregg (DS-96M), S.J. Novotny (GAP-99M), K.D. Greene (GAP-96D), and R.L.Hengehold, “Inter-Subband Infrared Absorption Spectra of Si / Si1-x Gex Quantum Wells Grown in the [110] Direction,” Phys. Rev. B 65 (2002) 195314-195322.

25. X. Duan (PostDoc), L.W. Burggraf, D.E. Weeks, G.E. Davico, R.L. Schwartz, and W.C. Lineberger, “Photoelectron Spectroscopy of Si2C3- and Quantum Chemistry of the Linear Si2C3 Cluster and Its Isomers,” J. Chem. Phys. 116 (2002) 3601-3611.

24. T.A. Niday (GAP-99M) and D.E. Weeks, “Scattering Matrix Elements for the Fine Structure Transition B (2P1/2) + H2 ( j = 0) ¿ B (2P3/2) + H2 (j = 0),” Chem. Phys. Letters 308 (1999) 106-114.

23. M.J. MacLachlan (DS-96S) and D.E. Weeks, “A New Application of the Interaction Picture to Calculate Reactive Scattering Matrix Elements,” J. Phys. Chem. A 102 (1998) 9489-9493.

22. R.S. Calfas (DS-96S) and D.E. Weeks,“A New Application of Absorbing Boundary Conditions for Computing Collinear Quantum Reactive Scattering Matrix Elements,” Chem. Phys. Letters 263 (1996) 292-296.

21. D.E. Weeks and R.D. Levine, “Dynamics of Non-Rigid Molecules: The Exploration of Phase Space via Resonant and Sub-Resonant Coupling,” Topics in Molecular Organization and Engineering,Y.G.Smeyers Ed.12 (1995) 249-306.

20. D.E. Weeks and D.J. Tannor, “A time-dependent formulation of the scattering matrix for the collinear Reaction H + H2 (n) ¿ H2 (n') + H,” Chem. Phys. Letters 224 (1994) 451-458.

19. D.E. Weeks and D.J. Tannor, “A Time Dependent Formulation of the Scattering Matrix Using Møller Operators,” Chem. Phys. Letters 207 (1993) 301-308.

18. D.J. Tannor and D.E. Weeks, “Wavepacket Correlation Function Formulation of Scattering Theory: The Quantum Analog of Classical S - Matrix Theory,” J. Chem. Phys. 98 (1993) 3884-3893.

17. D.E. Weeks and R.D. Levine, “Sub - Resonant Distortion of Phase Space Tori,” Phys. Letters A 167 (1992) 32-36. D.E.Weeks and R.D.Levine, “Impulsive Coupling Between Two Anharmonic Oscillators: A Kicked Rotor Paradigm,” Chem. Phys. Letters 195 (1992) 441-447.

16. D.E. Weeks, “Isotopic and Anharmonic Perturbations to the Dipole Active Vibrational Modes of Buckminsterfullerene,” J. Chem. Phys. 96 (1992) 7380-7393.

15. D.E. Weeks, W. Kiehl, C. Dong, and A.M. Hermann, “Thermopower of the Tl2Ba2CuOx Bulk Superconductors,” Physica C 176 (1991) 368-372.

14. D.E. Weeks, “Rotational Dynamics of Passive High TC Superconducting Bearings,” J. Appl. Phys. 70 (1991) 1820-1825.

13. D.E. Weeks, “High TC Superconducting Levitation Motor with a Laser Commutator II,” Rev. Sci. Inst. 61 (1991) 489-493.

12. D.E. Weeks and W.G. Harter, “Rotation-Vibration Scalar Coupling ¿ Coefficients and Spectroscopic Band Shapes of Buckminsterfullerene,” Chem. Phys. Letters 176 (1991) 209-216.

11. J.H. Wang, D.E. Weeks, X. Fei, C. Dong, W. Kiehl, A.M. Hermann, J. Trefny, and Z.X. Zhao, “Thermoelectric Power Measurements on Tl2Ba2 (Ca2-xYx) Cu3Oy,” Appl. Phys. Comm. 10 (1990) 293-302.

10. J.H. Wang, D.E. Weeks, W. Kiehl, J. Trefny, and A.M. Hermann, “Thermoelectric Power of the Tl - Ba - Ce - O System,” Appl. Phys. Comm. 10 (1990) 1-7.

9. D. Marsh, F. Arammash, J. Bennett, R. Deck, A.R. El Ali, D.E. Weeks, and A.M. Herman, “Effects of Ag Addition to the Tl-Ba-Ca-Cu-O Superconducting System,” Appl. Phys. Comm. 9 (1990) 245-265.

8. D.E. Weeks, “A Torsion Balance to Measure Hysteretic Levitation Forces in High TC Superconductors,” Rev. Sci. Inst. 61 (1990) 197-200.

7. D.E. Weeks, “High TC Superconducting Levitation Motor with a Laser Commutator,” Rev. Sci. Inst. 61 (1990) 195-197.

6. D.E. Weeks, “Levitation Properties of the YBa2Cu3Ox and Tl-Ba-Ca-Cu-O Superconducting Systems,” Appl. Phys. Lett. 55 (1989) 2784-2786.

5. D.E. Weeks and W.G. Harter, “Rotation-Vibration Spectra of Icosahedral Molecules: II) Icosahedral Symmetry, Vibrational Eigenfrequencies and Normal Modes of Buckminsterfullerene,” J. Chem. Phys. 90 (1989) 4744-4771.

4. W.G. Harter and D.E. Weeks, “Rotation-Vibration Spectra of Icosahedral Molecules: I) Ih–Symmetry Analysis and Fine Structure,” J.Chem.Phys. 90 (1989) 4727-4743.

3. D.E. Weeks and W.G. Harter, “Vibrational Frequencies and Normal Modes of Buckminsterfullerene,” Chem. Phys. Letters 144 (1988) 366-372.

2. W.G. Harter and D.E. Weeks, “Rovibrational Spectral Fine Structure of Icosahedral Molecules,” Chem. Phys. Letters 132 (1986) 387-392.

1. J. Eidson, S. Flynn, C. Holm, D.E. Weeks, and R. Fox, “Elementary Explanation of Boundary Shading in Chaotic-Attractor Plots for the Feigenbaum Map and the Circle Map,” Phys. Rev. A 33 (1986) 2809-2812.

Conference proceedings:

10. Peter M. Johnson (GEO-04M), Michael A. Marciniak, Robert L. Hengehold, and David E. Weeks, “Deviation of Time Resolved Luminescence Dynamics in MWIR Semiconductor Photonic Structures From Theoretical Predictions,” Great Lakes Photonics Symposium, Cleveland, OH, 7-11 June 2004.

9. S.M. Gorski (GAP-02M), M.A. Marciniak, R.L. Hengehold, and D.E. Weeks, “Time Resolved Photoluminescence Spectra of Mid-Infrared Quantum Well Lasers,” Solid State and Diode Laser Technology Review Technical Digest, Albuquerque, NM, 3-6 June 2002.

8. R.L. Hengehold, D.E. Weeks, M.A. Marciniak, C.A. Bartholomew (GEO-01M), and M.R. McKay (GAP-01S), “Mid-Infrared Quantum-Well, Opto-Electronic Devices,” Solid State and Diode Laser Technology Review Technical Digest, Albuquerque, NM, 21-24 May2001.

7. D.E. Weeks, S.H. Yang (PostDoc), and T.A. Niday (GAP-99M), “Scattering Matrix Elements and Cross Sections for the Reaction B (2P1/2) + H2(j) ¿ B (2P3/2) + H2 (j '),” Proceedings of the High Energy Density Matter (HEDM) Contractors’ Conference, 24-26 October 2000, Park City, UT, AFOSR Technical Report.

D.E. Weeks, S. Yang (PostDoc), R.L. Hengehold and M.A. Marciniak, "Mid-Infrared Quantum Well Research at AFIT," Solid State and Diode Laser Technology Review Technical Digest, Albuquerque, NM, 5-8 June 2000.

6. T.A. Niday (GAP-99M) and D.E. Weeks, “Scattering Matrix Elements for the Fine Structure Transition B (2P1/2) + H2 (j = 0) ¿ B (2P3/2) + H2 (j = 0),” Proceedings of the High Energy Density Matter (HEDM) Contractors’ Conference, 8-10 June 1999, Cocoa Beach, FL, AFOSR Technical Report.

5. D.E. Weeks, S.J. Novotny (GAP-99M), S. Yang (PostDoc), and R.L. Hengehold, "Quantum Well Dispersion Relations," Diode Laser Technology Review Technical Digest, 10-13 May 1999, Fort Walton Beach, FL.

4. D.E. Weeks and R.S. Calfas (DS-96D), “Time Dependent Wavepacket Studies of the Reaction HO + CO ¿ H + CO2,” Proceedings of the High Energy Density Matter (HEDM) Contractors’ Conference, 20-22 May 1998, Monterey, CA, AFOSR Technical Report.

3. M.J. MacLachlan (DS-96S) and D.E. Weeks, “An Application of the Interaction Picture to Calculate S-Matrix Elements for Reactive Scattering,” Proceedings of the High Energy Density Matter (HEDM) Contractors’ Conference, 1-3 June 1997, Chantilly, VA, PL - TR - 97 - 3057, March 1997.

2. R.S. Calfas (DS-96D) and D.E. Weeks, “A New Application of Absorbing Boundary Conditions for Computing Two-Dimensional Collinear Quantum Reactive Scattering Matrix Elements,” Proceedings of the High Energy Density Matter (HEDM) Contractors’ Conference, 5-7 June 1996, Boulder, CO, PL - TR - 96 - 3037, March 1996.

1. A.M. Hermann, H. Duan, W. Kiehl, andD.E. Weeks, “Thallium - Based Copper Oxide Superconductors,” International Conference on Organic Superconductors, Lake Tahoe, May 1990 (Plenum).

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