Search profiles
Novel photoemissive thin films for the emission of ultra-cold and ultra fast high average and peak current electron beams 2D coatings for sensitive materials (Atomic Armor) Photoemission physics Self-healing materials and photocathodes Free electron lasers Accelerator design and engineering Normal conducting high-current electron injector THz waves using intrinsic Josephson junctions (IJJs) Device micro-fabrication, rf systems, high temperature superconductor (HTS) fabrication and measurements, thin film chemical- and physical- vapor deposition techniques, cryogenic and vacuum systems Ultra-high purity thin film deposition for phototube and photocathode development
Education
Ph.D., Electrical Engineering
University of Maryland, College Park 2006
M.S., Electrical Engineering
University of Maryland, College Park 2004
B.S., Electrical Engineering
University of Maryland, College Park 2000
Positions
2017 - Present | Group Leader, AOT-AE
2013 - Present | Project Leader, Applied Cathode Enhancement and Robustness Technologies (ACERT)
2009 - 2012 | Deputy Project Leader, experimental S&T, Free Electron Laser project
2009 - 2011 | Project Leader, THz Component Development
2008 - 2009 | Cheif Scientist, Electron Laser Program
Awards
R&D 100 award (Category: IT/Electrical), R&D Special Recognition for Market Disruptor - Products: Gold Medalist, 2019
LANL Distinguished Performance Award for Large Teams (LANSCE), 2019
LANL Distinguished Performance Award for Large Teams (ACERT), 2016
Los Alamos Awards Program (LAAP) Achievement Awards, 2015
Laboratory Representative for Royal Academy of Engineering Global Grand Challenges, UK, 2013
IEEE Senior Member, 2012
Best Poster Award, Dept of Energy LDRD Tri-Lab Symposium, Washington, DC, 2010
Distinguished Performance Award, Free Electron Laser Program, LANL, 2008
Professional Societies
IEEE (senior member)
American Physical Society
SPIE, Directed Energy Prof. Society
ARRL, AMSAT
Publications
N. A. Moody, K. L. Jensen, A. Shabaev, S. G. Lambrakos, J. Smedley, D. Finkenstadt, J. M. Pietryga, P. M. Anisimov, V. Pavlenko, E. R. Batista, J. W. Lewellen, F. Liu, G. Gupta, A. Mohite, H. Yamaguchi, M. A. Hoffbauer, and I. Robel, Perspectives on Designer Photocathodes for X-ray Free-Electron Lasers: Influencing Emission Properties with Heterostructures and Nanoengineered Electronic States, Phys. Rev. Applied 10, 047002 (Published 17 October 2018) K. L. Jensen, M. McDonald, O. Chubenko, J. R. Harris, D. A. Shiffler, N. A. Moody, J. J. Petillo, and A. J. Jensen, Thermal-field and photoemission from meso- and micro-scale features: Effects of screening and roughness on characterization and simulation (editors-pick), Journal of Applied Physics 125, 234303 (2019) H. Yamaguchi, F. Liu, J. DeFazio, M. Gaowei, C. W. Narvaez Villarrubia, J. Xie, J. Sinsheimer, D. Strom, V. Pavlenko, K. L. Jensen, J. Smedley, A. D. Mohite, N. A. Moody, Free‐Standing Bialkali Photocathodes Using Atomically Thin Substrates, Advanced Materials Interfaces, 2018, 5(13), p. 1800249 K.L. Jensen, D. Finkenstadt, D.A. Shiffler, A. Shabaev, S.G. Lambrakos, N. A. Moody, J.J. Petillo, Analytical models of transmission probabilities for electron sources, Journal of Applied Physics, 123 (2018) 065301. G. Wang, P. Yang, N. A. Moody, E. R. Batista, Overcoming the quantum efficiency-lifetime tradeoff of photocathodes by coating with atomically thin two-dimensional nanomaterials, npj 2D Materials and Applications 2, Article number: 17 (2018). K.L. Jensen, D. Finkenstadt, A. Shabaev, S.G. Lambrakos, N. A. Moody, J.J. Petillo, H. Yamaguchi, F. Liu, A photoemission moments model using density functional and transfer matrix methods applied to coating layers on surfaces: Theory, Journal of Applied Physics, 123 (2018) 045301. Yamaguchi, H., N. A. Moody, et al., Towards photocathodes with long lifetimes and high quantum efficiency by surface passivating with two dimensional materials, (reference number: NCOMMS-17-25378), in review, Nature Communications. H. Yamaguchi, N. A. Moody, G. Gupta, and A. Mohite, Active bialkali photocathodes on free-standing graphene substrates. Nature 2D Materials and Applications, 2017. 1(1): p. 12. G. Wang, R. Pandey, N. A. Moody, E.R. Batista, Degradation of Alkali-Based Photocathodes from Exposure to Residual Gases: A First-Principles Study. The Journal of Physical Chemistry C, 2017. 121(15): p. 8399-8408. N.S. Makarov, J. Lim, Q. Lin, J.W. Lewellen, N. A. Moody, I. Robel, J.M. Pietryga, Quantum Dot Thin-Films as Rugged, High-Performance Photocathodes. Nano Letters, 2017. 17(4): p. 2319-2327. F. Liu, N. A Moody, K. L. Jensen, C. N. Villarubia , A. Mohite, G. Gupta, Single layer graphene protective gas barrier for copper photocathodes. Applied Physics Letters, 2017. 110(4): p. 041607. K.L. Jensen, J.J. Petillo, D.N. Panagos, S. Ovtchinnikov, N. A. Moody, Delayed photo-emission model for beam optics codes, Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena, 35 (2017) 02C102.doi K.L. Jensen, J.J. Petillo, S. Ovtchinnikov, D.N. Panagos, N. A. Moody, S.G. Lambrakos, Modeling emission lag after photoexcitation, Journal of Applied Physics, 122 (2017) 164501. Alexander, A., N. A. Moody, and P.R. Bandaru, Enhanced photocathode performance through optimization of film thickness and substrate. Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena, 2017. 35(2): p. 022202. V. Pavlenko, F. Liu, M. Hoffbauer, E. Batista, N. A. Moody, Kinetics of alkali-based photocathode degradation, AIP Advances, 6, 115008 (2016) N. A. Moody, D.C. Lizon, Photocathode device that replenishes photoemissive coating, US Patent number: 9368311, 2016. A. Alexander, N. A. Moody, and P. R. Bandaru, Enhanced quantum efficiency of photoelectron emission, through surface textured metal electrodes, Journal of Vacuum Science & Technology A, 34, 021401 (2016) Carlsten, B., S. J. Russell, J. W. Lewellen, D. C. Nguyen, P. M. Anisimov, C. E. Buechler, K. A. Bishofberger, L. D. Duffy, F. L. Krawczyk, Q. R. Marksteiner, N. A. Moody, N. Yampolsky, and R. L. Sheffield, MaRIE XFEL physics design risks and risk mitigation plans, DOE Contract Number: AC52-06NA25396; LA-UR-15-22069 (2015) N. A. Moody, H. Yamaguchi, G. Gupta, and A. Mohite. Graphene shield-enhancement of photosensitive surfaces and devices in Micro- and Nanotechnology Sensors, Systems, and Applications VI, 908333 (June 25, 2014). Vol. 9083, First Edition, p. 9083331. Bellingham, Washington: SPIE. J. W. Lewellen and N. A. Moody, High gradient cathode testing for MaRIE, Proceedings for FEL2014, THP024 N. A. Moody, D. C. Nguyen, H. L. Andrews, G. O. Bolme, L. J. Castellano, C. E. Heath, F. L. Krawczyk, S. I. Kwon, D. C. Lizon, F. A. Martinez, P. Marroquin, M. Prokop, R. M. Renneke, P. L. Roybal, W. T. Roybal, P. A. Torrez, W. M. Tuzel, and T. J. Zaugg , First CW operation of high gradient normal conducting rf electron injector , Proceedings of PAC11, New York (2011), Paper THP202, jacow.org.
N. A. Moody, L. N. Boulaevskii, V. Pavlenko, Optimized THz emission from intrinsic Josephson junctions," SPIE. 8023, 8023-18 (2011). D. C. Nguyen, N. A. Moody, G. Bolme, L. J. Castellano, C. E. Heath, F. L. Krawczyk, S. I. Kwon, R. McCrady, F. A. Martinez, P. Marroquin, M. Prokop, P. Roybal, W. T. Roybal, T. L. Tomei, P. A. Torrez, W. M. Tuzel, T. Zaugg, Endpoint energy measurements of field emission current in a CW normal-conducting RF injector, Phys. Rev. ST Accel. Beams 14, 030704 (2011). K. L. Jensen, D. W. Feldman, E. J. Montgomery, P. G. O’Shea, J. Lewellen, J. Harris, N. A. Moody, Multiple Scattering Effects on Quantum Efficiency and Response Time for Cesiated Metal Photocathodes, Journal of Applied Physics, 110, 034504 (2011) D. Shchegolkov, A. Azad, J. O'Hara, N. A. Moody, E. Simakov, Controlling terahertz waves with meta‐materials and photonic bandgap structures, Proceedings of 12th Annual IEEE Wireless and Microwave Technology Conference, Clearwater, FL (2011), paper 0418-2. K. L. Jensen, J. J. Petillo, E. J. Montgomery, Z. Pan, D. W. Feldman, P. G. O’Shea, N. A. Moody, M Cahay, J. E. Yater, J. L. Shaw, Application of a general electron emission equation to surface nonuniformity and current density variation, Journal of Vacuum Science Technology B, 26, 831 (2008). K. L. Jensen, B. L. Jensen, E. J. Montgomery, D. W. Feldman, P. G. O’Shea, N. A. Moody, Theory of photoemission from cesium antimonide using an alpha semiconductor model, Journal of Applied Physics, 104(4), 044907-10 (2008). E. J. Montgomery, D. W. Feldman, P. G. O'shea, Z. Pan, N. Sennett, K. L. Jensen, and N. A. Moody, Advances in cesium dispenser photocathodes: modeling and experiment, J. Dir. Energy 3, 66 (2008). N. A. Moody, K. L. Jensen, D. W. Feldman, E. J. Montgomery, and P. G. O’Shea, Factors affecting performance of dispenser photocathodes, Journal of Applied Physics, 102, 104901 (2007). N. A. Moody, D. W. Feldman, K. L. Jensen, P. G. O’Shea, E. J. Montgomery, A Prototype Dispenser Photocathode: Demonstration And Comparison To Theory, Applied Physics Letters, 90, 114108 (2007).
K. L. Jensen, N. A. Moody, D. W. Feldman, E. J. Montgomery, Photoemission from metals and cesiated surfaces, Journal of Applied Physics, 102, 074902 (2007). N. A. Moody, D. W. Feldman, K. L. Jensen, P. G. O’Shea, Low Workfunction Multi-Alkali Metal Dispenser Photocathode for RF-Photoinjectors, Jour. Directed Energy, 2, 32, (2007) LAUR-070731.
K. L. Jensen, P. G. O’Shea, D. W. Feldman, N. A. Moody, Theoretical Model of the intrinsic emittance of a photocathode, Applied Physics Letters, 89, 224103 (2006). K. L. Jensen, D. W. Feldman, N. A. Moody, P. G. O’Shea, A Photoemission Model for Low Workfunction Coated Metal Surfaces and its Experimental Validation, Journal of Applied Physics,99, 124905 (2006). K. L. Jensen, D. W. Feldman, N. A. Moody, P. G. O’Shea, “Field-Enhanced Photoemission from Metals and Coated Materials,” Journal of Vacuum Science and Technology B, 24, 863 (2006).
Additional Lab Capabilities
