Laser-induced electronic desorption from InP surfaces studied by femtosecond nonresonant ionization spectroscopy

Physical Review B - Condensed Matter and Materials Physics

Volumn 64, Issue 3, 2001, Pages

  Kanasaki, J ^a   Mikasa, N ^a   Tanimura, K ^a  

^a NAGOYA UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

INDIUM; PHOSPHORUS;

ARTICLE; CRYSTAL; DESORPTION; ELECTRONICS; IONIZATION; MATHEMATICAL ANALYSIS; NEODYMIUM LASER; SEMICONDUCTOR; SPECTROSCOPY;

EID: 4244136909     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.64.035414     Document Type: Article

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21. For evaluating ρ, we introduce a mean velocity (formula presented) and a width W (formula presented) for a rectangular form of velocity distribution of desorbed neutrals. At a time delay t, neutral species with a velocity (formula presented) arrive at the center of the ionization volume which is separated from the surface by the distance L: (formula presented) Because of the finite size of the ionization volume, which is characterized by the diameter d of the volume, neutral species with velocities (formula presented) are present in the ionization volume at the delay time. For the time delay (formula presented) when the central part of the velocity distribution arrives at the center of the volume, (formula presented) is given by (formula presented) where (formula presented) Since (formula presented) the fraction can be evaluated as (formula presented) Under the present experimental condition that (formula presented) and (formula presented) we can estimate that (formula presented)
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