Dr. Duncan L. Weathers, Associate Professor
 
 
  Department of Physics
P.O. Box 311427
Denton, Texas  76203-1427		 (940) 565-2079
Physics Building, Room 003
weathers@unt.edu
 
   
Education:  

Ph.D., California Institute of Technology, 1989.
Experimental atomic physics.

 

Research:   Dr. Weathers' areas of expertise are ion-solid interactions including sputtering, energy loss, secondary electron emission; ion optics; X-ray production in atomic collisions; Accelerator based materials characterization techniques, including Accelerator Mass Spectrometry, Backscattering Spectrometry, Nuclear Reaction Analysis, Particle Induced X-ray Emission; and Resonance Ionization Spectroscopy.
Publications:    
  1. "The Angular Distribution of Atoms Sputtered from a GA-In Eutectic Alloy Target," K.M Hubbard, R.A. Weller, D.L. Weathers and T.A. Tombrello, Nucl. Instr. and Meth. B 36 (1989) 395-403.
  2. "Sputtering from a Liquid Ga-In Eutectic Alloy," K.M. Hubbard, R.A. Weller, D.L. Weathers and T.A. Tombrello, Nucl. Instr. and Meth. B 40/41 (1989) 278-281.
  3. "Sticking Probabilities for Sputtered Ag and Au Atoms Incident on Oxidized Aluminum Surfaces," M.R. Weller, K.M. Hubbard, R.A. Weller, D.L. Weathers and T.A. Tombrello, Nucl. Instr. and Meth. B 42 (1989) 19-28.
  4.  "Sputtering of Au, CsI, and LiNbO3 by Multiply Charged Ar Ions," D.L. Weathers, T.A. Tombrello, M.H. Prior, R.G. Stokstad and R.E. Tribble, Nucl. Instr. and Meth. B 42 (1989) 307-316.
  5. "Heavy Ion Backscattering Analysis with a Time-of-Flight Detector," M Döbeli, P.C. Haubert, R.P. Livi, S.J. Spicklemire, D.L. Weathers and T.A. Tombrello, Nucl. Instr. and Meth. B 47 (1990) 148-154.
  6. "The University of North Texas Atomic Mass Spectrometry Facility for Detection of Impurities in Electronic Materials and Metals," F.D. McDaniel, S. Matteson, D.L. Weathers, D.K. Marble, J.L. Duggan, P.S. Elliot, D.K. Wilson and J.M. Anthony, Nucl. Instr. and Meth. B 52 (1990) 310-314.
  7.  "An Ultra-Clean Microprobe Ion Source for Atomic Mass Spectrometry," S. Matteson, J.L. Duggan, D. Marble, F.D. McDaniel, D.L. Weathers, D.K. Wilson, J.M. Anthony and R.L. Beavers, Nucl. Instr. and Meth. B 52 (1990) 327-333.
  8. "Atomic Mass Spectrometry of Materials," J.M. Anthony, S. Matteson, J.L. Duggan, P. Elliott, D. Marble, F.D. McDaniel and D.L> Weathers, Nucl. Instr. and Meth. B 52 (1990) 493-497.
 
  9. "Ion Beam Techniques for Materials Modification and Analysis," F.D. McDaniel, D.L. Weathers, J.L. Duggan, S. Matteson and D.K. Marble in: Applications of Nuclear Techniques, eds. G. Vourvopoulos and T. Paradellis (World Scientific, New Jersey, 1990) pp. 307-320.
  10. "Correlation of Chemical Microstructure with Solderability of PCBs," J.L. Marshall, D.E. Miller, J. Sees, S.E. Matteson, D. Weathers and L. Lichtenberg, Circuit World 18 (1991) 17-21.
  11.  "L-Shell X-Ray Production Cross Sections in 26Fe, 28Ni, 29Cu, 30Zn, 31Ga, and 32Ge by 0.5-to 5.0-MeVProtons," M.R. McNeir, Y.C. Yu, D.L. Weathers, J.L. Duggan, and F.D. McDaniel, Phys. Rev. A 44 (1991) 4372-4378.
 
  12. "K-Shell X-Ray Production Cross Sections in 6C, 8O, 9F, 11Na, 12Mg, and 13Al by 0.75-to 4.5-MeV Protons," Y.C. Yu, M.R. McNeir, D.L. Weathers, J.L. Duggan and F.D. McDaniel, Phys. Rev. A 44 (1991) 5702-5706.
  13. "K-Shell X-Ray Production Cross Sections in 6C, 8O, 9F, 11Na, 12Mg, and 13Al by 0.5-8.0-MeV Helium Ions," Y.C. Yu, M.R. McNeir, D.L. Weathers, J.L. Duggan, F.D. McDaniel, D.K. Marble, Z.Y. Zhao and G. Lapicki, Phys. Rev. A 44 (1991) 7252-7257.
 
  14. "X-Ray Production in Fluorine by Highly Charged Boron, Carbon, and Oxygen Ions," F.D. McDaniel, D.K. Marble, J.L. Duggan, M.R. McNeir, Y.C. Yu, Z.Y. Zhao, D.L. Weathers and P.S. Elliott, Nucl. Instr. and Meth. B 53 (1991) 531-535.
 
  15.  "Analysis and Reduction of Low-Z Contaminants on Thin Carbon Foils," D.L. Weathers, J.L. Duggan, R.B. Escue and F.D McDaniel, Nucl. Instr. and Meth. A 303 (1991) 69-78.
  16. "Solid-State Hydrogen Profiles in CVD Diamond Films," F.G. Celii, A.J. Purdes, B.E. Gnade and D.L. Weathers, 2nd International Conference on New Diamond Science and Technology 1991 MRS Int. Conf. Proc.
  17. "L-Shell X-Ray Production Cross Sections in 20Ca, 26Fe, 28Ni, 29Cu, and 32Ge by 0.75 to 4.5 MeV7L+ Ions," M.R. McNeir, Y.C. Yu, D.L. Weathers, D.K. Marble, J.L. Duggan and F.D McDaniel, Nucl, Instr. and Meth. B 56/57 (1991) 26-29.
 
  18. "Direct Ionization in K-Shell X-Ray Production in Fluorine by Highly-Charged Lithium, Boron, and Oxygen ions," D.K. Marble, F.D. McDaniel, M.R. McNeir, Y.C. Yu, Z.Y. Zhow, D.K. Wilson, D.L. Weathers and J.L. Duggan, Nucl. Instr. and Meth. B 56/57 (1991) 33-37.
 
  19.  "Trace Element Analysis of Steel Samples by Particle Induced X-Ray Emission," D.K. Wilson, J.L. Duggan, D.L. Weathers, F.D. McDaniel, S. Matteson, T. Thompson and I.L. Morgan, Nucl. Instr. and Meth. B 56/57 (1991) 690-693.
 
  20.  "A Time-of-Flight Detector for Heavy Ion RBS," M. Döbeli, P.C. Haubert, R.P. Livi, S.J. Sicklemire, D.L. Weathers and T.A. Tombrello, Nucl. Instr. and Meth. B 56/57 (1991) 764-767.
 
  21. "Materials Characterization Using Accelerator Mass Spectrometry," J.M. Anthony, R.L. Beavers, T.J. Bennett, S. Matteson, D.K. Marble, D.L. Weathers, F.D. McDaniel and J.L. Duggan, Nucl. Instr. and Meth. B 56/57 (1991) 873-876.
 
  22. "Triply-Ionized B2 Molecules from a Tandem Accelerator," D.L. Weathers, F.D. McDaniel, S. Matteson, J.L. Duggan, and  J.M. Anthony, Nucl. Instr. and Meth. B 56/57 (1991) 889-892.
 
  23. "Efficiency Determination for a Windowless Si(Li) X-Ray Detector for Photon Energies Below 5 keV Using Atomic-Field Bremsstrahlung," D.L. Weathers, J.L. Duggan, M.R. McNeir, Y.C. Yu, F.D. McDaniel, C.A. Quarles, H. Lehtihet and D. Kahler, Nucl. Instr. and Meth. B 56/57 (1991) 964-967.
 
  24.  "Electrostatic Octupole Lens Calculations for MeV Ion Accelerators," S. Matteson, D.K. Wilson, D.L. Weathers, F.D. McDaniel and J.L. Duggan, Nucl. Instr. and Meth. B 56/57 (1991) 1091-1095.
  25. "K-Shell X-Ray Production Cross Sections in 6C, 8O, 9F, 11Na, 12Mg, and 13Al by 0.75 to 5.0 MeV Protons Li+ Ions," Y.C. Yu, M.R. McNeir, D.L. Weathers, D.K. Marble, J.L. Duggan and F.D. McDaniel, Nucl. Instr. and Meth. B 56/57 (1991) 1188-1191.
 
  26. "Molecular Ion Stability and Populations in Tandem Accelerator Mass Spectrometry," S. Matteson, D.L. Weathers, Y.D. Kim, A.M. Arrale, F.D. McDaniel, J.L. Duggan, J.M. Anthony and M.A. Douglas, Nucl. Instr. and Meth. B 64 (1992) 330-335.
 
  27.  "Radionuclide Dating and Trace Element Analysis by Accelerator Mass Spectrometry," F.D. McDaniel, S. Matteson, D.L. Weathers, J.L. Duggan, D.K. Marble, I. Hassan, Z.Y. Zhao and J.M. Anthony, J. Radioanal. and Nucl. Chem. 160 (1992) 119-140.
 
  28. "Isotopic Fractionation in the Sputtering of 92Mo-100Mo Targets," D.L. Weathers, S.J. Spicklemire, T.A. Tombrello, I.D. Hutcheon and H. Gnaser, Nucl. Instr. and Meth. B 73 (1993) 135-150.
 
  29. "Reply to 'Note on Isotope Sputtering'," D.L. Weathers, I.D. Hutcheon, H. Gnaser, T.A. Tombrello and M.H. Shapiro, Nucl. Instr. and Meth. B 82 (1993) 194-195.
  30. "Trace Element Analysis by Accelerator Mass Spectrometry," F.D. McDaniel, S. Matteson, J.M. Anthony, D.L. Weathers, J.L. Duggan, D.K. Marble, I. Hassan, Z.Y. Zhao, A.M. Arrale and Y.D. Kim, J. Radioanal. and Nucl. Chem. 167 (1993) 423-432.
 
  31. "Characterization of Electronic Materials Using Accelerator Mass Spectrometry," F.D. McDaniel, J.M. Anthony, S. Matteson, D.L. Weathers, J.F. Kirchhoff, G. Vizkelethy, D.K. Marble, Y.D. Kim, I. Hassan and Z.Y. Zhao, Proc. Third Int. Conf. on Nucl. Tech. for Anal. and Ind. Appl., eds. G. Vourvopoulos and T. Paradellis (Western Kentucky University, USA, 1993) 179-195.
 
  32. "Model of Contamination Effect in Ion-Induced Electron Emission," A.M. Arrale, Z.Y. Zhao, J.F. Kirchhoff, D.K. Marble, D.L. Weathers, F.D. McDaniel and S. Matteson, Nucl. Instr. and Meth. B 89 (1994) 437-442.
  33. "Fabrication of Silicon-Based Optical Components for an Ultra-Clean Accelerator Mass Spectrometry Negative Ion Source," J.F. Kirchhoff, D.K. Marble, D.L. Weathers, F.D. McDaniel, S. Matteson, J.M. Anthony, R.L. Beavers and T.J. Bennett, Rev. Sci. Instr. 65 (1994) 1570-1574.
 
  34. "L-Shell X-Ray Production Cross Sections in 26Fe, 28Ni, 29Cu, 30Zn, 31Ga, and 32Ge by 0.5 to 8.0 MeV He Ions," M.R. McNeir, Y.C. Yu, D.L. Weathers, D.K. Marble, Z. Zhao, J.L. Duggan, F.D. McDaniel and G. Lapicki, J. Phys. B 27 (1994) 5295-5308.
 
  35. "Z1 Oscillations of the Mean Charge for Isotachic Ions in Carbon Foils," A.M. Arrale, Jianyue Jin, Z.Y. Zhao, D.L. Weathers, F.D. McDaniel and S. Matteson, Phys. Rev. A 51 (1995) 3335-3357.
 
  36. "Correlation between Energy Loss and Ion-Induced Electron Emission of 1 MeV Protons Channeled along the <100> Axis of a Thin Silicon Crystal," Z.Y. Zhao, A.M. Arrale, S.L. Li, F.D. McDaniel, S. Matteson, D.L. Weathers, J.M. Anthony and B. Gnade, Nucl. Instr. and Meth. B 99 (1995) 30-34.
 
  37. "Collision-Induced Interaction Cross Sections of 1-7 MeV B2 Ions Incident on an N2 Gas Target," Y.D. Kim, J.Y. Jin, S. Matteson, D.L. Weathers, J.M. Anthony, P. Marshall and F.D. McDaniel, Nucl. Instr. and Meth. B 99 (1995) 82-85.
 
  38. "Simultaneous Measurements of the Average Ion-Induced Electron Emission Yield and the Mean Charge State for Isotachic Ions in Carbon Foils," A.M. Arrale, Z.Y. Zhao, J.F. Kirchhoff, D.L. Weathers, F.D. McDaniel and S. Matteson, Phys. Rev. A 55 (1997) 1119-1123.
 
  39. "Convolution Fitting and Deconvolution Methods for Fluorine Depth Profiling by Resonant NRA," J. Jin, D.L. Weathers, J.P. Biscar, B.F. Hughes, J.L. Duggan, F.D. McDaniel and S. Matteson, Cp392, Appl. of Accelerators in Res. and Industry, eds. J.L. Duggan and I.L. Morgan (AIP Press, New York, 1997) 681-684.
 
  40. "Experimental Evidence for a Discrete Transition to Channeling for 1.0 MeV Protons in <100> Si," Z.Y. Zhao, A.M. Arrale, S.L. Li, D.K. Marble, D.L. Weathers, S. Matteson, J.M. Anthony, B. Gnade and F.D. McDaniel, Phys. Rev. A 57 (1998) 2742-2745.
 
  41. "Sputter-Initiated Resonance Ionization Spectroscopy at the University of North Texas," A.W. Bigelow, S.L. Li, S. Matteson and D.L. Weathers, CP485, Appl. of Accelerators in Res. and Industry, eds. J.L. Duggan and I.L. organ (AIP Press, New York, 1999) 569-572.
 
  42. "A Nuclear Reaction Analysis Study of Fluorine Uptake in Flint," Jian-Yue Jin, D.L. Weathers, F. Picton, B.F. Hughes, J.L. Duggan, F.D. McDaniel and S. Matteson, CP475, Appl. of Accelerators in Res. and Industry, eds. J.L. Duggan and I.L. Morgan (AIP Press, New York, 1999) 554-557.
 
  43. "Measured Energy and Angular Distributions of Sputtered Neutral Atoms from a Ga-In Eutectic Alloy Target," A.W. Bigelow, S.L. Li, S. Matteson and D.L. Weathers, CP576, Appl. of Accelerators in Res. and Industry, eds. J.L. Duggan and I.L. Morgan (AIP Press, New York, 2001) 108-111.
 
  44.. "Transverse Confinement of an Ion Beam in a Purely Electrostatic Configuration," J.R. Correa, C.A. Ordonez and D.L. Weathers, Nucl. Instr. and Meth. B 241 (2005) 909-912.
  45. "Modeling and Optimization of a Deflection Slit for Fast-Pulsing a Low Energy Ion Beam," R.J. Bosca and D.L. Weathers, Nucl. Instr. and Meth. B 261 (2007) 430-434.
 
  46. "Evaluation of a Novel Design for an Electrostatic Quadrupole Triplet Ion Beam Lens," L.R. Burns, J.D. Bouas, S. Matteson and D.L. Weathers, Nucl. Instr. and Meth. B 261 (2007) 75-78.
 
  47. "Installation of Ion Implantation Line for 3 MV Tandem Pelletron," P.R. Poudel, L.J. Mitchell, E.B. Smith, L.C. Phinney, K. Hossain, L.R. Burns, D.L. Weathers, J.L. Duggan and F.D. McDanielNucl. Instr. and Meth. B 261 (2007) 627-629.
 

For more Information:

You may e-mail Dr. Weathers at weathers@unt.edu

Or send mail to

Department of Physics
P.O. Box 311427
University of North Texas Denton, Texas 76203-1427
(940) 565-2630

Last Updated 25-Feb-2008