TITLE

Photoelectric charging of dust particles: Effect of spontaneous and light induced field emission of electrons

AUTHOR(S)
Sodha, M. S.; Dixit, A.
PUB. DATE
September 2009
SOURCE
Applied Physics Letters;9/7/2009, Vol. 95 Issue 10, p101502
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The authors have analyzed the charging of dust particles in a plasma, taking into account the electron/ion currents to the particles, electron/ion generation and recombination, electric field emission, photoelectric emission and photoelectric field emission of electrons under the influence of light irradiation; the irradiance has been assumed to be at a level, which lets the particles retain the negative sign of the charge. Numerical results and discussion conclude the papers.
ACCESSION #
44150674

 

Related Articles

  • Comparison of CsBr and KBr covered Cu photocathodes: Effects of laser irradiation and work function changes. He, Weidong; Vilayurganapathy, Subramanian; Joly, Alan G.; Droubay, Tim C.; Chambers, Scott A.; Maldonado, Juan R.; Hess, Wayne P. // Applied Physics Letters;2/18/2013, Vol. 102 Issue 7, p071604 

    Thin films of CsBr and KBr were deposited on Cu(100) to investigate photoemission properties of these potential photocathode materials. After prolonged laser ultraviolet irradiation photoemission, quantum efficiency increases by factors of 26 and 77 for KBr/Cu(100) and CsBr/Cu(100)...

  • Three region model and quantum enhancement of thermionic and photoelectric electron emission from negatively charged metallic surfaces. Agarwal, Sujeet; Misra, Shikha; Mishra, S.K.; Sodha, M.S. // Canadian Journal of Physics;Mar2012, Vol. 90 Issue 3, p265 

    In this paper the authors have evaluated the transmission coefficient of electrons across a negatively charged plane metallic surface on the basis of a three region model for variation of the potential energy of an electron near the surface, which incorporates a field free region, in contrast to...

  • Photoelectric field emission of electrons: Photon assisted tunneling. Sodha, M. S.; Dixit, A.; Srivastava, S. // Applied Physics Letters;6/22/2009, Vol. 94 Issue 25, p251501 

    This note is a discussion of the enhancement in electric field emission of electrons from a plane metallic surface on irradiation by light. The enhancement in the tunneling coefficient of an electron by absorption of a photon and the consequent increase in the field emission current has been...

  • General formulation of thermal, field, and photoinduced electron emission. Jensen, Kevin L. // Journal of Applied Physics;7/15/2007, Vol. 102 Issue 2, p024911 

    The canonical equations of electron emission are the Richardson-Laue-Dushman equation for thermionic emission, the Fowler-Nordheim equation for field emission, and the Fowler-Dubridge equation for photoemission. They are widely used and experimentally well vetted for the determination of current...

  • On low-field electron emission mechanisms. Dadykin, A. A. // JETP Letters;6/10/97, Vol. 65 Issue 11, p857 

    It is established by direct experiments that the main component of the stationary field-emission current in fields E<10[sup 5] V/cm is due to piezogeometric intensification (by a factor of 10[sup 3]) of the electricfield at the end faces of piezoelectrically active films. An emission mechanism...

  • Field emission microscopy of carbon nanotube caps. Dean, Kenneth A.; Chalamala, Babu R. // Journal of Applied Physics;4/1/1999, Vol. 85 Issue 7, p3832 

    Presents high resolution field emission images which showed a correlation between the field emission patterns and the current and electronic structure of a nanotube cap. Evidence of atomic resolution presented; Observation on fine structure; Experimental details.

  • Influence of shank profile on laser heating of a field emitter. Hadley, K. W.; Donders, P. J.; Lee, M. J. G. // Journal of Applied Physics;4/1/1985, Vol. 57 Issue 7, p2617 

    Discusses a study which investigated the influence of shank profile on laser heating of a field emitter. Way in which the profile of the field emitter is mapped without removing it from the vacuum tube; Process of making the field emitter; Advantage of photo field emission.

  • Effect of gases on the field emission properties of ultrananocrystalline diamond-coated silicon field emitter arrays. Hajra, M.; Hunt, C.E.; Ding, M.; Auciello, O.; Carlisle, J.; Gruen, D.M. // Journal of Applied Physics;9/15/2003, Vol. 94 Issue 6, p4079 

    Reports on studies of electron emission from ultrananocrystalline diamond (UNCD)-coated ungated silicon field emitters as a function of in situ exposure to various gases during current versus voltage and current versus time measurements. Fabrication of the emitter arrays by a subtractive tip...

  • Annealing effect on electron field-emission properties of diamond-like nanocomposite films. Ding, Xing-zhao; Mao, Dong-sheng; Tay, B. K.; Lau, S. P.; Shi, J. R.; Li, Y. J.; Sun, Z.; Shi, X.; Tan, H. S.; Zhang, Fu-min; Liu, Xiang-huai // Journal of Applied Physics;11/1/2000, Vol. 88 Issue 9, p5087 

    Studies the annealing effect on electron field-emission properties of diamond-like nanocomposite films. Gradual decrease in the emission threshold voltage; Structural variation of the film after annealing at different temperatures; Three-step model used.

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics