Angular distribution of atoms ejected by laser ablation of different metals

Journal Article · Wed Jul 01 00:00:00 EDT 2009 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3160305· OSTI ID:21359270

Konomi, I; Motohiro, T ^[1]; Asaoka, T ^[2]

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1. Toyota Technological Institute, 2-12-1 Hisakata, Tempaku-ku, Nagoya 468-8511 (Japan)
2. Toyota Central Research and Development Laboratories, Inc., 41-1 Yokomichi, Nagakute, Aichi 480-1192 (Japan)

Angular distributions of 13 different metals ejected by laser ablation using fourth harmonics (wavelength=266 nm) of neodymium doped yttrium aluminum garnet laser and a fluence close to near-threshold value (2.3 J/cm{sup 2}) have been investigated with a high angular resolution. The angular distribution which is characterized by the exponent n of cos{sup n} theta distribution showed very broad range of values between 3 and 24 for different metals. A simple relation that the exponent n is proportional to the square root of particle atomic weight as reported previously has not been observed. Instead, a general trend has been found that the metals with higher sublimation energy such as Ta and Zr show narrower angular distribution than those with lower sublimation energy such as Sn and In. While the sublimation energy of metals has a great influence on the angular distribution of ejected atoms, a simple consideration suggests that their thermal conductivity and specific heat have little effect on it.

• OSTI ID: 21359270
• Journal Information: Journal of Applied Physics, Vol. 106, Issue 1; Other Information: DOI: 10.1063/1.3160305; (c) 2009 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABLATION
ALUMINIUM
ANGULAR DISTRIBUTION
DOPED MATERIALS
INDIUM
LASERS
NEODYMIUM
SPECIFIC HEAT
SUBLIMATION
TANTALUM
THERMAL CONDUCTIVITY
TIN
YTTRIUM
ZIRCONIUM
DISTRIBUTION
ELEMENTS
EVAPORATION
MATERIALS
METALS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
RARE EARTHS
REFRACTORY METALS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENTS