Ultrashort laser pulses in metal surfaces: Origin of spurious fluctuations in fully quantal calculations

We use fully quantal methods to solve the time-dependent Schrodinger equation for collision problems. In our particular example, we studied the interaction of ultrashort laser pulses with metal surfaces. We obtained big fluctuations in the photoionization cross sections, and analyzed the possible or...

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Detalles Bibliográficos
Autores principales: Mitnik, D.M., Gravielle, M.S., Kamber E.Y., Nikolic D., Berrah N., Orel A., Tanis J.A., Starace A.F., Gorczyca T.W.
Formato: CONF
Materias:
Eigenvalues and eigenfunctions
Laser pulses
Nonlinear equations
Photoionization
Schrodinger equation
Basis sets
Collision problem
Fully-quantal
Metal surfaces
Numerical grids
Photoionization cross section
Time dependent Schrodinger equation
Ultrashort pulses
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_17426588_v194_n3_p_Mitnik
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:We use fully quantal methods to solve the time-dependent Schrodinger equation for collision problems. In our particular example, we studied the interaction of ultrashort laser pulses with metal surfaces. We obtained big fluctuations in the photoionization cross sections, and analyzed the possible origin of them. After ruling out the numerical grid effects, we found a way to eliminate the fluctuations, by choosing an appropriate basis set for the continuum eigenfunctions. © 2009 IOP Publishing Ltd.

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