Technical Publications

Gerry Harp
Director, Center for SETI Research

Blue are highlighted as papers with greatest impact.

Note: Italicized first author indicates graduate student of Dr. Harp.

1. "Primary Beam and Dish Surface Characterization at the Allen Telescope Array by Radio Holography," G. R. Harp, R. F. Ackermann, Z. J. Nadler, M. M. Davis, M. C. H. Wright, J. R. Forster, submitted to IEEE Journal of Antennas and Propagation, positive reviews and working on revisions.

2. "A new class of SETI beacons that contain information. In/ Communication with Extraterrestrial Intelligence," Harp, G. R., R. F. Ackermann, S. K. Blair, J. Arbunich, P. R. Backus, J. C. Tarter, and the ATA Team. 2010., ed. D. A. Vakoch. Albany, NY: State University of New York Press.

3. "ATA Mapping of the Geostationary Belt Toward RFI Excision," ATA Memo 86, G. R. Harp, (2009).

4. "Handbook of 1.4 GHz Phase Calibrators for ATA," ATA Memo 75, G. R. Harp (2009).

5. "The Allen Telescope Array: The First Widefield, Panchromatic, Snapshot Radio Camera for Radio Astronomy and SETI," Jack Welch, et al., Proceedings of the IEEE, Special Issue on Advances in Radio Telescopes (2009).

6. "Cross Correlating Interferometer Beams for Discrimination of Radio ETI Signals," G. R. Harp, ATA Memo71, (2006).

7. "SonATA Zero: A Prototype All-software SETI Detector," G. R. Harp, T. Kilsdonk, J. Jordan, SETI Memo 3, (2006).

8. "The ATA Servo Loop," ATA Memo 72, G. R. Harp (2006).

9. "Using Multiple Beams to Distinguish Radio Frequency Interference from SETI Signals," G. R. Harp, Radio Science 40, RS5S10 (2005).

10. "The ATA Digital Processing Requirements are Driven by RFI Concerns," G. R. Harp, Radio Science 40, RS5S10 (2005).

11. "Holography at the ATA," G. R. Harp and R. F. Ackermann, ATA Memo 65 (2004).

12. "Pointing the ATA Dishes," G. R. Harp, M. C. Fleming, R. F. Ackermann, D. R. DeBoer, G. C. Bower, ATA Memo 61 (2004).

13. "J-MIRIAD: Java Wrappers for MIRAD Methods," G. R. Harp and M. C. H. Wright, ATA Memo 58/BIMA Memo 98 (2003).

14. "A Distributed Software Correlator at the RPA", G. R. Harp, Proc. SPIE 4848, 1 (2002).

15. "Evaluation of Single Board Computers for the Antenna Controller at the ATA," G. R. Harp, Proc. SPIE4848, 75 (2002).

16. "Customized Beam Forming at the ATA," G. R. Harp, ATA Memo 51 (2002).

17. "A Software Correlator at the RPA," G. R. Harp and R. F. Ackermann, ATA Memo 34 (2001).

18. "RFI Survey at the RPA," G. R. Harp and R. F. Ackermann, ATA Memo 26 (2001).

19. "Mapping the antenna gain at the RPA," G. R. Harp and R. F. Ackermann, ATA Memo 19, (2001).

20. "Ferromagnetic hcp Fe in Fe/Re(001) multilayers," F. Perjeru, M. M. Schwickert, G. R. Harp, Phys. Rev. B61, 4054 (2000).

21. "Visible cathodoluminescence of Er-doped amorphous AlN thin films," K. Gurumurugan, Hong Chen, G. R. Harp, W. M. Jadwisienczak, and H. J. Lozykowski, Appl. Phys. Lett. 74, 3008 (1999).

22. "Spin structure at the interface of exchange biased FeMn/Co bilayers," W. J. Antel, Jr., F. Perjeru, G. R. Harp, Phys. Rev. Lett 83, 1439 (1999).

23. "X-ray Magnetic-Circular-Dichroism Study of Ni/Fe (001) Multilayers," Tao Lin, M. M. Schwickert, M. A. Tomaz, H. Chen, and G. R. Harp, Phys. Rev. B 59, 13911 (1999).

24. "Elastic Constants of face-centered-cubic cobalt," J. Gump, Hua Xia, M. Chirita, R. Sooryakumar, M. A. Tomaz, G. R. Harp, J. Appl. Phys. 86, 6005 (1999).

25. "Induced Ferromagnetism and Anisotropy of Pt Layers in Fe/Pt(001) Superlattices," W. J. Antel Jr., M. M. Schwickert, Tao Lin, W. L. O'Brien, and G. R. Harp, Phys. Rev. B 60, 12933 (1999).

26. "Computation of photoelectron and Auger-electron diffraction II. Multiple scattering cluster calculation PAD2," G. R. Harp, Y. Ueda, X. Chen, D. K. Saldin, Computer Physics Communications,112, 80 (1998).

27. "Computation of photoelectron and Auger-electron diffraction III. Evaluation of angle-resolved intensities PAD3," X. Chen, G. R. Harp, Y. Ueda, D. K. Saldin, Computer Physics Communications,112, 91 (1998).

28. "Magnetic Properties of Co/Rh(001) Multilayers Studied by X-ray Magnetic Circular Dichroism," M. A. Tomaz, E. Mayo, D. Lederman, E. Hallin, T. K. Sham, W. L. OÆBrien, and G. R. Harp, Phys. Rev. B 58, 11493 (1998).

29. "X-ray Magnetic Linear Dichroism at the L-edge of metallic Co, Fe, Cr, and V" M. M. Schwickert, G.Y. Guo, M. A. Tomaz, W. L. O'Brien, and G. R. Harp, Phys. Rev. B, Rapid Communications,58, R4289 (1998).

30. "Structure and Magnetic Properties of bct Ru/Fe(001) Multilayers," Tao Lin, M. A. Tomaz M. M. Schwickert, and G. R. Harp, Phys. Rev. B, 58, 862 (1998).

31. "First Results from a Retarding Field Angle-Resolved Display Analyzer," W. J. Antel, G. R. Harp, in press Proceedings of the Materials Research Society Symposium, Fall 1997.

32. "Competition Between Direct Exchange and Indirect RKKY Coupling in Fe/V(001) Superlattices," G. R. Harp, M. M. Schwickert, M. A. Tomaz, Tao Lin, D. Lederman, E. Mayo, and W. L . O'Brien, IEEE Transactions on Magnetics 34, 864 (1998).

33. "Structural and Magnetic Properties of Fe/Rh (001) Sputter Deposited Multilayers," M. A. Tomaz, G. R. Harp, E. Mayo, D. Lederman, R. Wu, and W. L. OÆBrien, J. Vac. Sci. Technol. A 16, 1336 (1998).

34. "A Comparison of XMCD at the L and M edges of Mo, Ru, Rh, and Pd," M. A. Tomaz, G. R. Harp, E. Hallin, T. K. Sham, and W. L. OÆBrien, J. Vac. Sci. Technol. A 16, 1359 (1998).

35. "Magnetic Moments, Coupling, and Interface Interdiffusion in Fe/V(001) Superlattices," M. M. Schwickert, M. A. Tomaz, Tao Lin, G. R. Harp, R. Coehoorn, D. Lederman, E. Mayo, and W. L. O'Brien, Phys. Rev. B 57, 13681 (1998).

36. Review Article: "Transition Metal Thin Film Epitaxy," G. R. Harp, in Heteroeptiaxy: Thin Film Systems, ed. by W. K. Liu & M B Santos, ISBN 981-02-3390-6 (World Scientific, 1999).

37. "Fe/Rh(100) Multilayer Magnetism Probed by X-ray Magnetic Circular Dichroism," M. A. Tomaz, D. C. Ingram, G. R. Harp, D. Lederman, E. Mayo, and W. L. O'Brien, Phys. Rev. B 56, 5474 (1997).

38. "Induced V Moments in Fe/V(100), (211), and (110) Superlattices Studied Using X-ray Magnetic Circular Dichroism," M. A. Tomaz, W. J. Antel Jr., W. L. OÆBrien, and G. R. Harp, (Letter to the editor) J. Phys. Condens. Matter 9, L179 (1997).

39. "Orientation Dependence of Interlayer Coupling and Interlayer Moments in Fe/Cr (100), (211), and (110) multilayers," M. A. Tomaz, W. J. Antel Jr., W. L. OÆBrien, and G. R. Harp, Phys. Rev. B,55, 3716 (1997).

40. "Growth Temperature Dependence of Long Range Alloy Order and Magnetic Properties of Epitaxial FexPt1-x(x » 0.5) films," R. F. C. Farrow, D. Weller, R. F. Marks, M. F. Toney, S. Hom, G. R. Harp, and A. Cebollada, Appl. Phys. Lett. 69, 1166 (1996).

41. "Magnetic Circular Dichroism in Reflection Electron Energy Loss Spectroscopy?" G. R. Harp, R. F. C. Farrow, and R. F. Marks, J. Vac. Sci. Technol. B 14, 3148 (1996).

42. "Epitaxial Growth of Metals by Sputter Deposition," G. R. Harp and S. S. P. Parkin, Thin Solid Films 288, 315 (1996).

43. "Exchange Stiffness, Magnetization and Spin Waves in Cubic and Hexagonal Phases of Cobalt," X. Liu, M. M. Steiner, R. Sooryakumar, G. A. Prinz, R. F. C. Farrow, and G. R. Harp, Phys. Rev. B53, 12166 (1996).

44. "Control of the Axis of Chemical Ordering and Magnetic Anisotropy in Epitaxial FePt films," R. F. C. Farrow, R. F. Marks, M. F. Toney, A. Cebollada, and G. R. Harp, J. Appl. Phys. 79, 5967 (1996).

45. "Magnetic Superlattices - Molecular-Beam Epitaxial-Growth And Properties Of Artificially And Naturally-Layered Structures," R. F. C. Farrow, R. F. Marks, A. Cebollada, G. R. Harp, T. A. Rabedeau, M. F. Toney, D. Weller, S. S. P. Parkin, J. Crystal Growth 150, 1126 (1995).

46. "Induced Rh Magnetic Moments in Fe-Rh and Co-Rh Alloys Using X-ray Magnetic Circular Dichroism," G. R. Harp, S. S. P. Parkin, W. L. O'Brien, and B. P. Tonner, Phys. Rev. B (Rapid Communications) 51, 12037 (1995).

47. "X-ray Magnetic Circular Dichroism Study of Fe/V Multilayers," G. R. Harp, S. S. P. Parkin, W. L. O'Brien, and B. P. Tonner, Phys. Rev. B, Rapid Communications 51, 3293 (1995).

48. "Seeded Epitaxy of Metals by Sputter Deposition," G. R. Harp, and S. S. P. Parkin, Appl. Phys. Lett. 65, 3063 (1994).

49. "Orientation Dependence of the Polar Kerr Effect in fcc and hcp Co," D. Weller, G. R. Harp, R. F. C. Farrow, A. Cebollada, and J. Sticht, Phys. Rev. Lett. 72, 2097 (1994).

50. "Observation of X-ray Magnetic Circular Dichroism at the Rh M2,3 Edge in Co-Rh Alloys," G. R. Harp, S. S. P. Parkin, W. L. O'Brien, and B. P. Tonner, J. Appl. Phys. 76, 6471 (1994).

51. "Experimental Investigation of Dichroism Sum Rules for V, Cr, Mn, Co and Ni: Influence of Diffuse Magnetism," W. L. O'Brien, G. R. Harp, B. P. Tonner, and S. S. P. Parkin, J. Appl. Phys. 76, 6462 (1994).

52. "MBE-Growth of Chemically-Ordered Co-Pt and Fe-Pt Alloy Phases," R. F. C. Farrow, G. R. Harp, D. Weller, R. F. Marks, M. Toney, A. Cebollada, and T. A. Rabedeau, Jap. J. Appl. Phys.

53. Enhanced Magneto-Optical Kerr Effect in Spontaneously Ordered FePt Alloys: Quantitative Agreement Between Theory and Experiment," A. Cebollada, D. Weller, J. Sticht, G. R. Harp, R. F. C. Farrow, R. F. Marks, R. Savoy, and J. C. Scott, Phys. Rev. B 50, 3419 (1994).

54. "Oscillations of Interlayer Exchange Coupling and Giant Magnetoresistance in (111) Oriented Permalloy / Au Multilayers," S. S. P. Parkin, R. F. C. Farrow, R. F. Marks, A. Cebollada, G. R. Harp, and R. J. Savoy, Phys. Rev. Lett. 72, 3718 (1994).

55. "Angular Distributions of Auger Electrons from Surfaces: Conclusions from Full Multiple-Scattering Simulations," X. Chen, G. R. Harp, and D. K. Saldin, J. Vac. Sci. Tech. A 12, 428 (1994).

56. "Magneto-optical Spectroscopy as a Structure and Chemical Order Sensitive Probe," D. Weller, G. R. Harp, R. F.C. Farrow, A. Carl, and J. Sticht, Proceedings of SPIE Meeting, Los Angeles, Jan. 22-24, 1994.

57. "Magnetic Alloy Films: New Developments in Structure-Property Relations," R. F. C. Farrow, D. Weller, G. R. Harp, R. F. Marks, T. A. Rabedeau, M. Toney, and A. Cebollada, in Metallic Alloys: Experimental and Theoretical Perspectives, ed. by J. S. Faulkner and R. G. Gordon, Kluwer Academic Publishers, Netherlands, p. 379 (1994).

58. "Giant Magnetoresistance and Co Cluster Structure in Phase-Separated Co-Cu Granular Alloys," T. A. Rabedeau, M. F. Toney, R. F. Marks, S. S. P. Parkin, R. F. C. Farrow, and G. R. Harp, Phys. Rev. B 48, 16810 (1994).

59. "Unusual Stability of fcc Co(110)/Cu(110)," G. R. Harp, R. F. C. Farrow, D. Weller, T. A. Rabedeau, and R. F. Marks, Phys. Rev. B, 48, 17583 (1993).

60. "Magneto-Optical Kerr Spectroscopy of a New Chemically Ordered Alloy: Co3Pt," G. R. Harp, D. Weller, T. A. Rabedeau, R. F. C. Farrow, Phys. Rev. Lett. 71, 2493 (1993).

61. "MBE Growth of Artificially-Layered Magnetic-Metal Structures on Semiconductors and Insulators," R. F. C. Farrow, R. F. Marks, G. R. Harp, D. Weller, T. A. Rabedeau, M. F. Toney, and S. S. P. Parkin, Mat. Sci. Eng.R11, 155 (1993).

62. "Epitaxial Growth of Pt on Basal-Plane Sapphire: A Seed Film for Artificially Layered Magnetic Metal Structures," R. F. C. Farrow, G. R. Harp, R. F. Marks, T. A. Rabedeau, M. F. Toney, D. Weller, and S. S. P. Parkin, J. Crys. Growth 133, 47 (1993).

63. "Element-Specific Magnetic Microscopy with Circularly Polarized X-rays," J. Stöhr, Y. Wu, B. D. Hermsmeyer, M. G. Samant, G. R. Harp, S. Koranda, D. Dunham, and B. P. Tonner, Science 259, 658 (1993).

64. "Magneto-Optical Kerr Spectroscopy as a Probe of Chemical Ordering in CoPt," G. R. Harp, D. Weller, T. A. Rabedeau, R. F. C. Farrow, A. Cebollada, and R. F. Marks, Magnetic Ultrathin Films:Multilayers and Surfaces Interfaces and Characterization, Materials Research Society Symposium Proc. 313, 1993.

65. "Growth Temperature Dependence of Magnetoresistance in Co/Cu(111) Wedged Superlattices," G. R. Harp, S. S. P. Parkin, R. F. C. Farrow, R. F. Marks, M. F. Toney, Q. H. Lam, T. A. Rabedeau, A. Cebollada, and R. J. Savoy, Magnetic Ultrathin Films: Multilayers and Surfaces Interfaces and Characterization, Materials Research Society Symposium Proc. 313, 1993.

66. "Microstructural Dependence of the Perpendicular Magnetic Anisotropy in Co-Pt Alloys," E. E. Marinero, R. F. C. Farrow, G. R. Harp, R. H. Geiss, Magnetic Ultrathin Films: Multilayers and Surfaces Interfaces and Characterization, Materials Research Society Symposium Proc. 313, 1993.

67. "Interfacial Structure of Co-Pt Multilayers," T. A. Rabedeau, G. R. Harp, R. F. Marks, R. F. C. Farrow, and M. F. Toney, Magnetic Ultrathin Films: Multilayers and Surfaces Interfaces and Characterization, Materials Research Society Symposium Proc. 313, 1993.

68. "Atomic Structure of Co-Pt Multilayers," T. A. Rabedeau, G. R. Harp, R. F. Marks, R. F. C. Farrow, M. F. Toney, Magnetic Ultrathin Films: Multilayers and Surfaces Interfaces and Characterization, Materials Research Society Symposium Proc. 313, 1993.

69. "Giant Magnetoresistance and Structure of Phase-Separated Epitaxial Metals," R. F. Marks, G. R. Harp, S. S. P. Parkin, R. F. C. Farrow, T. A. Rabedeau, M. F. Toney, and A. Cebollada, Magnetic Ultrathin Films: Multilayers and Surfaces Interfaces and Characterization, Materials Research Society Symposium Proc. 313, 1993.

70. "Magneto-Optical Spectra of CoPt3: Experiments and First Principles Calculations," D. Weller, J. Sticht, G. R. Harp, R. F.C. Farrow, R. F. Marks, Magnetic Ultrathin Films: Multilayers and Surfaces Interfaces and Characterization, Materials Research Society Symposium Proc. 313, 1993.

71. "Temperature Dependence of Magnetoresistance in Co/Cu(111) Superlattice Wedges," G. R. Harp, S. S. P. Parkin, R. F. C. Farrow, R. F. Marks, M. Toney, T. Rabedeau, and R. Savoy, Phys. Rev. B47, 8721 (1993).

72. "The Concentric Shell Algorithm for Auger and Core-Level Photoelectron Diffraction: Theory and Applications," D. K. Saldin, G. R. Harp, and X. Chen, Phys. Rev. B 48, 8234 (1993).

73. "Giant Magnetoresistance in As-Grown Epitaxial Films of Phase-Separated Co-Cu and Co-Ag," S. S. P. Parkin, R. F. C. Farrow, T. A. Rabedeau, R. F. Marks, G. R. Harp, Q. H. Lam, M. F. Toney, R. Savoy, and R. Geiss, Europhys. Lett. 22, 455 (1993).

74. "Finite-size Effects and Short-range Crystalline Order in Si and SiO2 by X-ray Absorption Fine Structure Spectroscopy," G. R. Harp, D. K. Saldin, and B. P. Tonner, J. Phys. Condens. Matter 5, 5377 (1993).

75. "Large Perpendicular-Anisotropy, High-Coercivity Alloys for Magneto-optical Recording," R. F. C. Farrow, R. H. Geiss, G. L. Gorman, G. R. Harp, R. F. Marks, and E. E. Marinero, Proc. Magneto Optical Recording International Symposium (MORIS), Tucson AZ., Dec. 5-7, 1992, Jap. J. M. M. Mat. (1993).

76. "Giant Magnetoresistance in Transition Metal Multilayers," S. S. P. Parkin, R. F. Marks, R. F. C. Farrow, and G. R. Harp, in Magnetism and Structure in Reduced Dimension, ed. by R. F. C. Farrow, et. al., Plenum Publishing Co., New York, 1993.

77. "Effects of Structure and Chemical Ordering on Magneto Optical Spectra in the Co1-xPtx Alloy System," D. Weller, H. Brändle, R. F. C. Farrow, R. F. Marks, and G. R. Harp, NATO ASI Series:Magnetism and Structure in Systems of Reduced Dimension, ed. by R. F. C. Farrow, et. al., Plenum Publishing Co., New York, 1993.

78. "Chemical Ordering and Magnetic Anisotropy in MBE-Grown Co/Pt Multilayers," R. F. C. Farrow, C. H. Lee, R. F. Marks, G. R. Harp, M. F. Toney, T. A. Rabedeau, D. Weller, and H. Brändle, NATO ASI Series: Magnetism and Structure in Systems of Reduced Dimension, ed. by R. F. C. Farrow et. al., Plenum Publishing Co., New York, 1993.

79. "Epitaxial Growth and Homoepitaxy of Pt(110) and Cu(110) on SrTiO3(110)," G. R. Harp, R. F. C. Farrow, R. F. Marks, and J. E. Vazquez, J. Cryst. Growth, 127, 627 (1993).

80. "Photoelectron Holography of Si(100)-[2 x 1] and other surface and Thin Film Structures", B. P. Tonner, J. Zhang, X. Chen, Z.-L. Han, G. R. Harp, and D. K. Saldin, J. Vac. Sci. Tech. B 10,2082 (1992).

81. "Giant Magnetoresistance and Enhanced Antiferromagnetic Coupling in Highly Oriented Co/Cu(111) Superlattices," S. S. P. Parkin, R. F. Marks, R. F. C. Farrow, G. R. Harp, Q. H. Lin, and R. Savoy, Phys. Rev. B46, 9262 (1992).

82. "X-Ray Secondary-Emission Microscopy (XSEM) Of Neurons," G. Destasio, S. F. Koranda, B. P. Tonner, G. R. Harp, D. Mercanti, M. T. Ciotti, G. Margaritondo, Europhysics Letters 19, 655 (1992).

83. "Observation of the Ordered CoPt3 Alloy in Co-Pt Multilayers," M. F. Toney, R. F. C. Farrow, R. F. Marks, G. R. Harp, T. Rabedeau, Mat. Res. Soc. Symp. Proc. 263, 237 (1992).

84. "An Electrostatic Microscope for Synchrotron-radiation X-ray Absorption Microspectroscopy," B. P. Tonner, and G. R. Harp, Rev. Sci. Instrum., 63, 564 (1992).

85. "The Effect of the Reference Wave in Auger Electron Holography," D. K. Saldin, G. R. Harp, and B. P. Tonner, Phys. Rev. B. 45, 9629 (1991).

86. "The Effects of Various Experimental Parameters on the Reliability of Holographic Reconstruction," G. R. Harp, X. Chen, Z.-L. Han, D. K. Saldin, and B. P. Tonner, J. Electron Spectrosc. Relat.Phenom. 57, 331 (1991).

87. "Structural Effects in Single-crystal Photoelectron, Auger-electron, and Kikuchi-electron Angular Diffraction Patterns", Z.-L. Han, S. Hardcastle, G. R. Harp, H. Li, X. D. Wang, J. Zhang, and B. P. Tonner, Surf. Sci. 258, 313 (1991).

88. "Photoelectron Holography of Ultrathin Cu/Ir(111) Films: Limits to Accuracy and Resolution," S. Hardcastle, Z. L. Han, G. R. Harp, J. Zhang, D. K. Saldin and B. P. Tonner, Surf. Sci. 245, (1991).

89. "Scattered-Wave Integral-Transform Method of Holographic-Image Reconstruction from Forward-Scattering Diffraction Patterns," B. P. Tonner, Z.-L. Han, G. R. Harp, and D. K. Saldin, Phys. Rev. B 43, 14423 (1991).

90. "Theoretical Principles of Holographic Crystallography," D. K. Saldin, G. R. Harp, B. L. Chen, and B. P. Tonner, Phys. Rev. B 44, 2480 (1991).

91. "Scanned-angle X-ray Photoemission Holography with Atomic Resolution," G. R. Harp, D. K. Saldin, and B. P. Tonner, Phys. Rev. B 40 , 9199 (1990).

92. "Selective Area Deposition of Boron on Si(111) Induced by Synchrotron Radiation," R. A. Rosenburg, F. K. Perkins, D. C. Mancini, G. R. Harp, B. P. Tonner, S. Lee, and P. A. Dowben, Appl. Phys. Lett. 58, 607 (1990).

93. "Atomic-Resolution Electron Holography in Solids with Localized Sources," G. R. Harp, D. K. Saldin, and B. P. Tonner, Phys. Rev. Lett. 65, 1012 (1990).

94. "Spatially-resolved X-ray Absorption Near-edge Spectroscopy of Silicon in Thin Silicon-oxide Films," G. R. Harp, Z. L. Han, B. P. Tonner, Physica Scripta T31, 23 (1990).

95. "X-ray Absorption Near Edge Structures of Intermediate Oxidation States of Silicon in Silicon Oxides During Thermal Desorption," G. R. Harp, Z. L. Han, B. P. Tonner, J. Vac. Sci. Technol. A 8, 2566 (1990).

96. "Unusual Solutions of the Laplace Equation," G. R. Harp and R. S. Sorbello, Am. J. Phys. 58, 366 (1990).

97. "Photoyield Spectromicroscopy of Silicon Surfaces using Monochromatic Synchrotron Radiation," B. P. Tonner, G. R. Harp, J. Vac. Sci. Technol. A 7, 1 (1989).

98. "Soft X-ray Absorption Microscopy of Surfaces with Synchrotron Radiation," G. R. Harp, B. P. Tonner, Proc. Mat. Res. Soc., Fall 1988.

99. "Photoelectron Microscopy with Synchrotron Radiation," B. P. Tonner, G. R. Harp, Rev. Sci. Instrum. 59, 853 (1988).

Patent

"Method and Apparatus for Imaging of an Atomic Environment," D. K. Saldin, B. P. Tonner, G. R. Harp, U.S. Patent #557630, 7/13/1993.