Impact of the cathode metal work function on the performance of vacuum-deposited organic light emitting-devices

Received: 7 September 1998 / Accepted: 27 November 1998 / Published online: 24 February 1999     

Development and experimental validation of analytical thermal models for the evaluation of the depth of laser-treated zones

Received: 5 January 1998/Accepted: 27 March 1998     

Diffuse-band radiation of molecular potassium generated by the energy-pooling effect

Received: 23 April 1998 / Revised version: 3 June 1998 / Published online: 24 February 1999     

On the derivation and analysis of the “machine equation” in finite deformations

Received: 23 June 1998/Accepted: 15 July 1998     

Light transmittance of the layer with cylindrical pores

Received: 20 September 1998 / Revised version: 21 December 1998     

Relativistic properties of the quark-antiquark potential

The relativistic transformation properties of the heavy quark-antiquark interaction potential are considered in the framework of the relativistic quark model. A special attention is paid to the long-range (confining) contribution to the spin-independent part of interaction. The retardation effects are consistently taken into account. Received: 22 April 1998 / Revised version: 9 September 1998 / Published online: 22 October 1998     

Effect of the surface composition of chlorine-containing polymers upon their XPS parameters

Received: 6 January 1998/ Accepted: 7 January 1998     

Si in-diffusion during the 3D islanding of Ge/Si(001) at high temperatures

Received: 7 September 1998 / Accepted: 20 November 1998 / Published online: 24 February 1999     

In uence of ambient conditions on the laser air spark

Received: 17 June 1998/Revised version: 17 September 1998     

Focusing dependence of the efficiency of a singly resonant optical parametric oscillator

Received: 15 February 1998/Revised version: 6 April 1998     

Summing up the perturbation series in the Schwinger Model

Perturbation series for the electron propagator in the Schwinger Model is summed up in a direct way by adding contributions coming from individual Feynman diagrams. The calculation, performed entirely in momentum space, shows the complete agreement between nonperturbative and perturbative approaches. Received: 2 March 1998 / Revised version: 12 May 1998 / Published online: 8 September 1998     

Potential usage of the magnetron-motion-free mode of one ion confined in a combined trap

Received: 5 February 1998/Revised version: 18 March 1998     

On the sensitivity limit of positron annihilation: detection of vacancies in as-grown silicon

14 cm^-3 in FZ-Si was obtained. Received: 2 June 1998 / Accepted: 20 November 1998 / Published online: 24 February 1999     

Effects of a modulation of the pump-polarization in a degenerate pump/probe experiment

The effects of the pump-polarization in a degenerate pump/probe experiment are analyzed. It is shown that modulating the pump polarization from linear to circular induces a modulation in the probe absorption change that allows to separate various contributions that are mixed in the signal. An experimental demonstration is carried out in a laser dye (Coumarin 500). Received: 21 July 1998 / Revised: 28 October 1998 / Accepted: 20 November 1998     

Modeling the preparation of pc-Si thin films with a Cu vapor laser

Received: 4 February 1998/Accepted: 23 June 1998     

On the theory of relaxation of electrons excited by femtosecond laser pulses in thin metallic films

Received: 14 October 1998 / Revised version: 21 December 1998     

Generation of tunable sub-picosecond pulses in the UV with a travelling wave dye laser

Received: 22 June 1998/Revised version: 3 August 1998     

Couplings of pions with excited heavy mesons from light-cone QCD sum rules in the leading order of HQET

The couplings of pions with lowest three doublets , and of heavy mesons are studied with light-cone QCD sum rules in the leading order of heavy quark effective theory. The ambiguity due to presence of two distinct states are solved. Received: 20 January 1998 / Revised version: 3 April 1998 / Published online: 12 August 1998     

Slow positron annihilation studies of vacancy-type defects in the near-surface region of Cu and Nb before and after wear

Received: 22 June 1998 / Accepted: 9 November 1998     

Experimental study with a Fourier set-up of the image transfer from a laser beam to a forward or backward stimulated Raman scattered beam

Received: 13 July 1998 / Revised version: 8 October 1998 / Published online: 24 February 1999