Lawrence G. Rowan
Present Positions:
Professor of Physics
Department of Physics and Astronomy
102 Phillips Hall, CB# 3255
University of North Carolina
Chapel Hill, North Carolina 27599-3255
919) 962 7174
Director
Center for Teaching and Learning
316 Wilson Library, CB# 3470
University of North Carolina
Chapel Hill, North Carolina 27599-3470
(919) 966 1289
Biographical Data:
B.S. in Engineering Physics (Electronics) (1958), with highest honors, University of California (Berkeley); Ph.D. in Physics, University of California (Berkeley), thesis entitled "Transient Microwave Electron Spin Resonance Phenomena" June 1963; (Phi Beta
Kappa, Tau Beta Pi, Sigma Xi, APS);
Instructor (1966) University of North Carolina (Chapel Hill);
Assistant Professor (1971) University of North Carolina (Chapel Hill);
Associate Professor (1976) University of North Carolina (Chapel Hill);
Professor (1990) University of North Carolina (Chapel Hill);
Tanner Good Teaching Award, 1974 and 1984;
Deutsche Forschungsgemainschaft (DFG) to do research at the Frei Universitaet Berlin, West Germany (1985):
DFG to do ENDOR research at the Universitaet Gesamthochschule Paderborn, West Germany (1986).
Teaching Experience:
General Physics (algebra based) for science majors, mostly biology, since 1969
Computer Programing and Numerical Techniques for physics majors, since 1991
Electronics, digital and analog circuits, since 1985
Research Fields:
Electron Paramagnetic Resonance; Electron Spin Echo Envelope Modulation; Electron Nuclear Double Resonance; Paramagnetic defects in insulating crystals (TiO2, AgCl, LaF3, Ge, Si, LiNdO3).
Constructed and maintained an Electron Spin Echo Spectrometer since 1975
Maintained a Brueker EPR spectometer since 1976
Bibliography:
~20 publications, 5 contributed and 1 invited papers since 1965.
"Spin-echo Envelope Modulation study of LaF3:Nd+3" (D. W. Hess), Phy Rev. B, 19, 1-8 (1979).
"Energy Barrier against Self-Trapping of the Hole in Silver Chloride" (with E. Laredo, and L. Slifkin), Phys Rev. Letts, 47, 384-387 (1981).
"Low-temperature Formation of Fe+3 Centers in Silver Chloride" (with E. Laredo, W. B. Paul, and L. Slifkin), J. Phys. C: Solid State Phys., 16, 1153-1160 (1983).
"Interactions between self- and solute trapping of photocarriers in Pd-doped AgCl" (with E. Laredo, W. B. Paul, and L. Slifkin) Phys. Rev. B 27, 2470-2476 (1983).
"Spectral diffusion of V+4 in TiO2" (with G. Chingas) Phys. Rev. B 27, 2636-2639 (1983).
"Dynamics of photohole trapping in Silver Chloride" (with E. Laredo, W. B. Paul, S.-E. Wang, and L. Slifkin) Radiation Effects Vol. 72, 97-102 (1983).
"The Formation and Migration of the Self-trapped Hole in AgCl", (with E. Laredo, W. B. Paul, S.-E. Wang, and L. Slifkin) Proceedings of the 1983 Trieste Conference on "The Physics of Latent Image Formation in Silver Halides" (World Scientific Publishing C
o., 1984).
"Electron Paramagnetic Resonance Studies of AgCl:Pd and AgCl:Cu", (with W. B. Paul and S.-E. Wang) Fourth International Conference on "The Dynamic Processes in the Excited States of Solids", Stanford University, Stanford, California, July 11-14, 1983.
"Ligand Hyperfine Spectra of Cu+2 in AgCl", (with W. B. Paul and S.-E. Wang) EPR Spectroscopy Symposia of the 25th Rocky Mountain Conference, Denver, Colorado, August 14-17, 1983.
"Spin-Echo Spectroscopy of Cu+2 in AgCl", EPR Spectroscopy Symposia of the 26th Rocky Mountain Conference, Denver, Colo., Aug. 5-9, (1984).
"Self-Trapped Holes in Pure and Doped AgCl", International Conference on Defects in Insulating Crystals, University of Utah, Slat Lake City, Utah, Aug. 20-24, (1984).
"Ligand Hyperfine Spectra of Cu+2 in AgCl", (with W.B. Paul, S-E Wang) Physical Review B-1, 33, 585-587, (1 January 1985).
"Kinematics", Computer program tutorial developed under the IBM courseware developement project. College of Arts and Science, UNCCH (1985-1986).
"Comparison between Echo Envelope Modulation and ENDOR", invited paper at Herrschech Conference in West Germany (1986).
"Echo Envelope Modulation with Quadrupole Interaction", J. Mag. Res., 74, 308-315 (1987).
"Relativistic kinematics simulation", Computer program tutorial developed under the IBM courseware developement project, College of Arts and Science, UNCCH (1987-1989).
"Relativistic simulations for use in the classroom"", IBM courseware developement conference. Dallas, Texas (20-22 June 1988).
"Thermal properties of the high temperature self-trapped hole in silver chloride", (with C.-T. Kao and L. Slifkin) International Conference on Defects in Insulating Crystals, Parma, Italy (29 Aug-2 Sept. 1988).
"Student reactions to relativistic simulations", IBM courseware developement conference. Anaheim, Calif. (22-24 June 1989).
"Site of Fe+3 Impurities in a Congruent LiTaO3 Crystal", (with H. Soethe, and J.-M. Spaeth), J. Phys. Condens. Matter 1, 3591-3600 (1989).
"EPR study of hole trapping at cation vacancies in silver chloride", ( with C.-T, Kao and L. Slifkin) EPR Spectroscopy Symposia of the 31th Rocky Mountain Conference, Denver, Colo., (July 30-Aug 4 1989).
"Applications of EPR in the study of Si and SiO2 device materials", 2nd Workshop on characterization techiques in the study of semiconductor devices. MCNC, RTP North Carolina (10-13 September 1989)
"EPR Study of Hole Trapping at Cation Vacancies in Silver Halides", (with C.-T. Kao, and L. M. Slifkin), Phys. Rev. B 42 pp. 3142-3151 (15 August 1990).
"Dynamics of the Formation and Migration of the Self-Trapped Hole in Silver Chloride", (with L. Slifkin), Hopping and Related Phenomena ed. by H. Fritzsche and M. Pollak (World Sci., 1990), pp. 393-399.
"Applications of Electron Paramagnetic Resonance to Studies in Insulators and Semiconductors", J. electronic Mater. 19/7, pp. 633-636, (Jul 1990).
"Spin lattice Relaxation Times of Haemoglobins: Is NQR Double Resonance Feasible for Large Protein Complexes?" (with H.S. Panth and E. Bergmann) Speculations in Science and Technology, ,13, No 3, pp. 228-236, (1990).
"Electron paramagnetic resonance forbidden transitions from Hydrogen in polycrystalline diamond films". ( with S. L. Holder and J. J. Kiebs), Appl. Phys. Lett. 64, pp. 1091-1093 (1994)
Professional Activities:
Director, Center for Teaching and Learning UNCCH (1994 - present)
Director, Recent Advances in Physics for High School Teachers Conference, (1980-1989)
Director, North Carolina Junior Science and Humanities Symposium, (1988, 1984, 1982, 1980)
Director, Electronics Course for High School and College Teachers, (1975-1977)
Ph. D. Students:
S. L. Holder, 1995
L. Lipkin, 1991
C.-T. Kao (with L. M. Slifkin), 1989.
S. Goldenberg (with L. M. Slifkin), 1988,
W. B. Paul (with L. M. Slifkin), 1987, General Electric.
G. Chingas, 1983, Naval Research Lab.
D. W. Hess, 1979, Scientific Atlanta.
R. Sanders, 1977