Search Results - "Pavlenko, Vitaly"

Highly efficient photoelectric effect in halide perovskites for regenerative electron sources by Liu, Fangze, Sidhik, Siraj, Hoffbauer, Mark A., Lewis, Sina, Neukirch, Amanda J., Pavlenko, Vitaly, Tsai, Hsinhan, Nie, Wanyi, Even, Jacky, Tretiak, Sergei, Ajayan, Pulickel M., Kanatzidis, Mercouri G., Crochet, Jared J., Moody, Nathan A., Blancon, Jean-Christophe, Mohite, Aditya D.

“…Electron sources are a critical component in a wide range of applications such as electron-beam accelerator facilities, photomultipliers, and image…”
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Single layer graphene protective gas barrier for copper photocathodes by Liu, Fangze, Moody, Nathan A., Jensen, Kevin L., Pavlenko, Vitaly, Narvaez Villarrubia, Claudia W., Mohite, Aditya D., Gupta, Gautam

“…Photocathodes can benefit from a thin protection layer and attain long-term stability. Graphene is potentially a good candidate for such application. We report…”
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Photoemission from Bialkali Photocathodes through an Atomically Thin Protection Layer by Liu, Fangze, Guo, Lei, DeFazio, Jeffrey, Pavlenko, Vitaly, Yamamoto, Masahiro, Moody, Nathan A, Yamaguchi, Hisato

“…Photocathodes are essential components for various applications requiring photon-to-free-electron conversion, for example, high-sensitivity photodetectors and…”
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Stoichiometry control and automated growth of alkali antimonide photocathode films by molecular beam deposition by Pavlenko, Vitaly, Smedley, John, Scheinker, Alexander, Fleming, Ryan L., Alexander, Anna, Hoffbauer, Mark A., Moody, Nathan A.

“…We report on a method of photoemissive film growth that controls stoichiometry in real time. We show that stoichiometry control using a feedback loop is…”
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Kinetics of alkali-based photocathode degradation by Pavlenko, Vitaly, Liu, Fangze, Hoffbauer, Mark A., Moody, Nathan A., Batista, Enrique R.

“…We report on a kinetic model that describes the degradation of the quantum efficiency (QE) of Cs3Sb and negative electron affinity (NEA) GaAs photocathodes…”
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Quantum Efficiency Enhancement of Bialkali Photocathodes by an Atomically Thin Layer on Substrates by Yamaguchi, Hisato, Liu, Fangze, DeFazio, Jeffrey, Gaowei, Mengjia, Guo, Lei, Alexander, Anna, Yoon, Seong In, Hyun, Chohee, Critchley, Matthew, Sinsheimer, John, Pavlenko, Vitaly, Strom, Derek, Jensen, Kevin L., Finkenstadt, Daniel, Shin, Hyeon Suk, Yamamoto, Masahiro, Smedley, John, Moody, Nathan A.

“…Quantum efficiency (QE) enhancement in accelerator technology relevant to antimonide photocathodes (K2CsSb) is achieved by interfacing them with atomically…”
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Active bialkali photocathodes on free-standing graphene substrates by Yamaguchi, Hisato, Liu, Fangze, DeFazio, Jeffrey, Narvaez Villarrubia, Claudia W., Finkenstadt, Daniel, Shabaev, Andrew, Jensen, Kevin L., Pavlenko, Vitaly, Mehl, Michael, Lambrakos, Sam, Gupta, Gautam, Mohite, Aditya D., Moody, Nathan A.

“…The hexagonal structure of graphene gives rise to the property of gas impermeability, motivating its investigation for a new application: protection of…”
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Free‐Standing Bialkali Photocathodes Using Atomically Thin Substrates by Yamaguchi, Hisato, Liu, Fangze, DeFazio, Jeffrey, Gaowei, Mengjia, Narvaez Villarrubia, Claudia W., Xie, Junqi, Sinsheimer, John, Strom, Derek, Pavlenko, Vitaly, Jensen, Kevin L., Smedley, John, Mohite, Aditya D., Moody, Nathan A.

“…This study reports successful deposition of high quantum efficiency (QE) bialkali antimonide K2CsSb photocathodes on graphene films. The results pave the way…”
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Stoichiometry control and automated growth of alkali antimonide photocathode films by molecular beam deposition by Pavlenko, Vitaly

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Technical features of the MR reactor decommissioning by Craig, David, Fecitt, Lorna, Gorlinsky, Yuri, Harman, Neil, Jackson, Roger, Kolyadin, Vyacheslav, Lobach, Yuri, Pavlenko, Vitaly

“…This paper presents a preliminary technical design for the dismantling of the MR reactor. The goal of the design is the removal of reactor components allowing…”
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Stoichiometry control and automated growth of alkali antimonide photocathode films by molecular beam deposition by Pavlenko, Vitaly, Smedley, John Morgan, Scheinker, Alexander, Fleming, Ryan Lee, Alexander, Anna Marie, Hoffbauer, Mark Arles, Moody, Nathan Andrew

“…We report on a method of photoemissive film growth that controls stoichiometry in real time. We show that stoichiometry control using a feedback loop is…”
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Divergence study and emittance measurements for the electron beam emitted from a diamond pyramid by Kim, D., Andrews, H.L., Choi, B.K., Fleming, R.L., Huang, C.-K., Kwan, T.J.T., Lewellen, J.W., Nichols, K., Pavlenko, V., Simakov, E.I.

“…This paper reports the results of a divergence study and emittance measurements for an electron beam emitted from a single diamond pyramid in a sparse diamond…”
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Quantum Efficiency Enhancement of Bialkali Photocathodes by an Atomically Thin Layer on Substrates by Yamaguchi, Hisato, Liu, Fangze, DeFazio, Jeffrey, Gaowei, Mengjia, Guo, Lei, Alexander, Anna, Yoon, Seong In, Hyun, Chohee, Critchley, Matthew, Sinsheimer, John, Pavlenko, Vitaly, Strom, Derek, Jensen, Kevin L., Finkenstadt, Daniel, Shin, Hyeon Suk, Yamamoto, Masahiro, Smedley, John, Moody, Nathan A.

“…Quantum Efficiency Enhancement Phototube with accelerator technology relevant antimonide photocathodes (K2CsSb) deposited on atomically thin two‐dimensional…”
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Physics of Electron Emission and Beam Dynamics from a Single Diamond Field Emitter by Huang, Chengkun, Kwan, Thomas J. T., Piryatinski, Andrei, Baker, Ryan C., Kim, Dongsung, Pavlenko, Vitaly, Andrews, Heather L., Fleming, Ryan L., Simakov, Evgenya I.

“…Many applications such as compact accelerators and electron microscopy demand high brightness electron beams with small beam size and ultra-low emittance…”
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Photocathode: Free‐Standing Bialkali Photocathodes Using Atomically Thin Substrates (Adv. Mater. Interfaces 13/2018) by Yamaguchi, Hisato, Liu, Fangze, DeFazio, Jeffrey, Gaowei, Mengjia, Narvaez Villarrubia, Claudia W., Xie, Junqi, Sinsheimer, John, Strom, Derek, Pavlenko, Vitaly, Jensen, Kevin L., Smedley, John, Mohite, Aditya D., Moody, Nathan A.

“…Accelerator technology‐relevant photocathodes are now successfully deposited on free‐standing atomically thin substrates of graphene. This advances an ultimate…”
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Free-Standing Bialkali Photocathodes Using Atomically Thin Substrates by Yamaguchi, Hisato, Liu, Fangze, DeFazio, Jeffrey, Gaowei, Mengjia, Narvaez Villarrubia, Claudia W., Xie, Junqi, Sinsheimer, John, Strom, Derek, Pavlenko, Vitaly, Jensen, Kevin L., Smedley, John, Mohite, Aditya D., Moody, Nathan A.

“…This study reports successful deposition of high quantum efficiency (QE) bialkali antimonide K2CsSb photocathodes on graphene films. The results pave the way…”
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Design of a Source for GHz Ultra-Wide Bandwidth Applications Using the Two-Stream Instability by Neuen, Derek, Bishofberger, Kip, Pavlenko, Vitaly, Yampolsky, Nikolai

“…A novel source for millimeter-wave RF is being designed at Los Alamos National Laboratory (LANL) utilizing the two-stream instability. This source has the…”
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Study of the Beam Divergence in Diamond Field Emitter Array Cathodes by Kim, Dongsung, Andrews, Heather L., Fleming, Ryan L., Lewellen, John L., Nichols, Kimberley, Pavlenko, Vitaly, Shchegolkov, Dmitry Yu, Simakov, Evgenya I.

“…We present the results of beam divergence studies for the diamond field emitter array (DFEA) cathodes producing high-current-density electron beams. At Los…”
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Field Assisted Photoemission from Nanocrystalline Diamond and Diamond Field Emitter Arrays by Pavlenko, Vitaly, Andrews, Heather L., Aragonez, Robert J., Fleming, Ryan L., Huang, Chengkun, Kim, Dongsung, Kwan, Thomas J. T., Piryatinski, Andrei, Simakov, Evgenya I.

“…Field emission from nanocrystalline diamond and especially from diamond field emitters is known to have an onset at low electric fields of a few MV/m, although…”
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Quantum efficiency enhancement of bialkali photocathodes by an atomically thin layer on substrates by Yamaguchi, Hisato, Liu, Fangze, DeFazio, Jeffrey, Gaowei, Mengjia, Guo, Lei, Alexander, Anna, Yoon, Seong In, Hyun, Chohee, Critchley, Matthew, Sinsheimer, John, Pavlenko, Vitaly, Strom, Derek, Jensen, Kevin L, Finkenstadt, Daniel, Shin, Hyeon Suk, Yamamoto, Masahiro, Smedley, John, Moody, Nathan A

“…We report quantum efficiency (QE) enhancements in accelerator technology relevant antimonide photocathodes (K2CsSb) by interfacing them with atomically thin…”
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