Technician
Technician

Biography

Mr. Alan Schemer-Kohrn has spent the past decade operating scanning electron microscopes at PNNL. He performs high-resolution imaging, elemental analysis, and transmission electron microscope sample preparation using both traditional dimple-grinding and focused ion beam techniques.

Prior to joining PNNL, Mr. Schemer-Kohrn spent 10 years as a field service representative for an electron microscope vendor.

Education

  • Scanning Electron Microscopy (SEM) and X-ray Microanalysis, Lehigh Microscopy School (2009)
  • Associate of Applied Science in Electronics Engineering Technology, ITT Technical Institute (1989)
  • BA in English, University of Utah (1987)

Publications

2019

  • Jana S., A.L. Schemer-Kohrn, N.R. Overman, L.E. Sweet, E.J. Kautz, C.A. Lavender, and V.V. Joshi. 2019. Eutectoid Transformation in U10Mo Alloy: Effect of Deformation History and Homogenization Heat Treatment. PNNL-28519. Richland, WA: Pacific Northwest National Laboratory. Eutectoid Transformation in U10Mo Alloy: Effect of Deformation History and Homogenization Heat Treatment
  • Kaspar T.C., C.L. Arendt, D.L. Neal, S.L. Riechers, C.E. Rutherford, A.L. Schemer-Kohrn, and S.R. Spurgeon, et al. 2019. "Characterization of surface layers formed on DU10Mo ingots after processing steps and high humidity exposure." Journal of Nuclear Materials 514. PNNL-SA-136846. doi:10.1016/j.jnucmat.2018.11.022

2018

  • De Vetter B.M., T.L. Myers, B.D. Cannon, N.K. Scharko, M.K. Kelly-Gorham, J.F. Corbey, and A.L. Schemer-Kohrn, et al. 2018. "Optical and Chemical Characterization of Uranium Dioxide (UO2) and Uraninite Mineral: Calculation of the Fundamental Optical Constants." Journal of Physical Chemistry A 122, no. 35:7062-7070. PNNL-SA-135514. doi:10.1021/acs.jpca.8b05943
  • Willingham D.G., B.E. Naes, J.G. Tarolli, A.L. Schemer-Kohrn, M.A. Rhodes, M.E. Dahl, and A.D. Guzman, et al. 2018. "Image Fusion of Secondary Ion Mass Spectrometry and Energy-dispersive X-Ray Spectroscopy Data for the Characterization of Uranium-Molybdenum Fuel Foils." Journal of Nuclear Materials 498. PNNL-SA-126272. doi:10.1016/j.jnucmat.2017.10.028

2017

  • De Vetter B.M., B.E. Bernacki, W.D. Bennett, A.L. Schemer-Kohrn, and K.J. Alvine. 2017. "Fabrication of periodic gold nanocup arrays using colloidal lithography." Journal of Visualized Experiments. PNNL-SA-121501. doi:10.3791/56204
  • De Vetter B.M., B.E. Bernacki, W.D. Bennett, A.L. Schemer-Kohrn, and K.J. Alvine. 2017. "Multi-resonant layered plasmonic films." Journal of Nanophotonics 11, no. 1:Article No. 016015. PNNL-SA-120674. doi:10.1117/1.JNP.11.016015
  • De Vetter B.M., B.E. Bernacki, W.D. Bennett, A.L. Schemer-Kohrn, and K.J. Alvine. 2017. "Tamper indicating gold nanocup plasmonic films." Applied Physics Letters 110, no. 7:Article No. 071101. PNNL-SA-122051. doi:10.1063/1.4975936

2016

2015

  • Alvine K.J., B.E. Bernacki, W.D. Bennett, A.L. Schemer-Kohrn, and J.D. Suter. 2015. "Subwavelength films for standoff radiation dosimetry." In Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XVI, April 20, 2015, Baltimore, Maryland. Proceedings of the SPIE, 9455, Article No. 945503. Bellingham, Washington:SPIE. PNNL-SA-109182. doi:10.1117/12.2177140
  • Suter J.D., P. Ramuhalli, J.S. McCloy, K. Xu, S.Y. Hu, Y. Li, and W. Jiang, et al. 2015. "Meso-Scale Magnetic Signatures for Nuclear Reactor Steel Irradiation Embrittlement Monitoring." In 41ST ANNUAL REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION: Volume 34, edited by Dale E Chimenti and Leonard J. Bond, 1650, 1476-1485. Melville, New York:AIP Publishing LLC. PNNL-SA-105084. doi:10.1063/1.4914765

2014

2013

  • Buck E.C., A.L. Schemer-Kohrn, and J.B. Wierschke. 2013. "Technetium Incorporation into C14 and C15 Laves Intermetallic Phases." In Scientific Basis for Nuclear Waste Management XXXVI: Materials Research Society Fall Meeting, November 25-30, 2012, Boston, Massachusetts, 1518, 117-122. Boston, Massachusetts:Cambridge University Press. PNNL-SA-92573. doi:10.1557/opl.2013.69

2012

  • Alvine K.J., M. Vijayakumar, M.E. Bowden, A.L. Schemer-Kohrn, and S.G. Pitman. 2012. "Hydrogen diffusion in Lead Zirconate Titanate and Barium Titanate." Journal of Applied Physics 112, no. 4:Article No. 043511. PNNL-SA-82843. doi:10.1063/1.4748283
  • Edwards D.J., R.M. Ermi, A.L. Schemer-Kohrn, N.R. Overman, C.H. Henager, D. Burkes, and D.J. Senor. 2012. Characterization of U-Mo Foils for AFIP-7. PNNL-21990. Richland, WA: Pacific Northwest National Laboratory. Characterization of U-Mo Foils for AFIP-7

2011

  • Sundaram S.K., C.H. Henager, D.J. Edwards, A.L. Schemer-Kohrn, M. Bliss, and B.J. Riley. 2011. "Electron Backscatter Diffraction Analysis of a CZT Growth Tip from a Vertical Gradient Freeze Furnace." Journal of Crystal Growth 329, no. 1:12-19. PNNL-SA-73552. doi:10.1016/j.jcrysgro.2011.02.008
  • Sundaram S.K., C.H. Henager, D.J. Edwards, A.L. Schemer-Kohrn, M. Bliss, B.J. Riley, and M.B. Toloczko, et al. 2011. "Hierarchical Microstructures in CZT." Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment 652, no. 1:174-177. PNNL-SA-73553. doi:10.1016/j.nima.2010.09.128

2009

  • Henager C.H., D.J. Edwards, A.L. Schemer-Kohrn, M. Bliss, and J.E. Jaffe. 2009. "Preferential orientation of Te precipitates in melt-grown CZT." Journal of Crystal Growth 311, no. 9:2641-2647. PNNL-SA-63619. doi:10.1016/j.jcrysgro.2009.03.002

2008

  • Henager C.H., A.L. Schemer-Kohrn, S.G. Pitman, D.J. Senor, K.J. Geelhood, and C.L. Painter. 2008. "Pitting Corrosion in CVD SiC at 300°C in Deoxygenated High-Purity Water." Journal of Nuclear Materials 378, no. 1:9-16. PNNL-SA-56271. doi:10.1016/j.jnucmat.2008.03.025
  • Henager C.H., D.J. Edwards, A.L. Schemer-Kohrn, S.K. Sundaram, B.J. Riley, and M. Bliss. 2008. "Electron Backscatter Diffraction of a Ge Growth Tip from a Vertical Gradient Freeze Furnace." Journal of Crystal Growth 311, no. 1:10-14. PNNL-SA-61619.