Published January 2012 | Version v1
Journal article Metadata-only

Nano-textured W shows improvement of thermionic emission properties

Creators

  • 1. General Physics Institute of the Russian Academy of Sciences, Wave Research Center of A.M. Prokhorov, Moscow (Russian Federation)
  • 2. University of Crete, Materials Science and Technology Department, Heraklion (Greece)
  • 3. Institute of Electronic Structure and Laser, Foundation for Research and Technology - Hellas, (IESL-FORTH), Heraklion (Greece)
  • 4. University of Crete, Physics Department, Heraklion (Greece)
  • 5. Roentgenprom, Protvino, Moscow (Russian Federation)

Description

Laser-assisted nano-texturing of W substrates cathodes via ablation in liquid environment is experimentally realized. Two laser sources are used, either a Ti:sapphire femtosecond laser or a Nd:YAG laser with pulse duration of 350 ps. Laser exposure of W results in the formation of hemi-spherical nanostructures situated on top of periodic ripples. Nano-textured thermionic W cathode demonstrates the decrease of the efficient work function by 0.3 eV compared to pristine surface. (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1007/s00339-011-6692-6

Additional details

Identifiers

DOI
10.1007/s00339-011-6692-6;

Publishing Information

Journal Title
Applied Physics. A, Materials Science and Processing
Journal Volume
106
Journal Issue
1
Journal Page Range
p. 1-4
ISSN
0947-8396
CODEN
APAMFC

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
43018307
Subject category
S36: MATERIALS SCIENCE; S77: NANOSCIENCE AND NANOTECHNOLOGY;
Descriptors DEI
ABLATION; CATHODES; ELECTRIC CONDUCTIVITY; ELECTROMAGNETIC PULSES; ETHANOL; LASER BEAM MACHINING; LASER RADIATION; LIQUIDS; NANOSTRUCTURES; NEAR INFRARED RADIATION; PHYSICAL RADIATION EFFECTS; SCANNING ELECTRON MICROSCOPY; SURFACES; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 1000-4000 K; TEXTURE; THERMIONIC EMISSION; TUNGSTEN; WATER; WORK FUNCTIONS
Descriptors DEC
ALCOHOLS; ELECTRICAL PROPERTIES; ELECTRODES; ELECTROMAGNETIC RADIATION; ELECTRON MICROSCOPY; ELEMENTS; EMISSION; FLUIDS; FUNCTIONS; HYDROGEN COMPOUNDS; HYDROXY COMPOUNDS; INFRARED RADIATION; MACHINING; METALS; MICROSCOPY; ORGANIC COMPOUNDS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; PULSES; RADIATION EFFECTS; RADIATIONS; REFRACTORY METALS; TEMPERATURE RANGE; TRANSITION ELEMENTS