Simulation of laser-induced ionization in wide bandgap solid dielectrics with a particle-in-cell code.

Modeling the laser-plasma interaction within solids is crucial in controlling ultrafast laser processing of dielectrics, where the pulse propagation and plasma formation dynamics are highly intricate. This is especially important when dealing with nano-scale plasmas where specific phenomena of plasma physics, such as resonance absorption, can significantly impact the energy deposition process. In this article, we report on adapting of a Particle-In-Cell code, EPOCH, to model the laser-plasma interaction within solids.

A solver based on pseudo-spectral analytical time-domain method for the two-fluid plasma model.

A number of physical processes in laser-plasma interaction can be described with the two-fluid plasma model. We report on a solver for the three-dimensional two-fluid plasma model equations. This solver is particularly suited for simulating the interaction between short laser pulses with plasmas.

Generation of a Bessel beam in FDTD using a cylindrical antenna.

Bessel beams are becoming a very useful tool in many areas of optics and photonics, because of the invariance of their intensity profile over an extended propagation range. Finite-Difference-Time-Domain (FDTD) approach is widely used for the modeling of the beam interaction with nanostructures. However, the generation of the Bessel beam in this approach is a computationally challenging problem.

Modeling and experimental data of zirconium-89 production yield.

The radionuclide zirconium-89 can be employed for the positron emission tomography (PET). In this study Zr excitation function via Y(p,n)Zr reaction was calculated by the TALYS-1.8 code based on microscopic level density model.

Preparation and Quality Control of (68)Ga-Citrate for PET Applications.

Objectives: In nuclear medicine studies, gallium-68 ((8)Ga) citrate has been recently known as a suitable infection agent in positron emission tomography (PET). In this study, by applying an in-house produced (68)Ge/(68)Ga generator, a simple technique for the synthesis and quality control of (68)Ga-citrate was introduced; followed by preliminary animal studies.

Methods: (68)GaCl3 eluted from the generator was studied in terms of quality control factors including radiochemical purity (assessed by HPLC and RTLC), chemical purity (assessed by ICP-EOS), radionuclide purity (evaluated by HPGe), and breakthrough.