Effect of neutron irradiation on the characteristics of laser-produced plasma

Abstract

Using a static mass-spectrometer we studied the effect of the target irradiation with neutrons on the parameters of the plasma particles generated from such irradiated targets under the action of laser radiation. We found that the defects in the crystal structure of targets, due to the irradiation, influence not only on the efficiency of the material evaporation process and emission of the plasma, but also on the efficiency of ionization and recombination processes, which takes place in the plasma bunch on the stage of formation and expansion.

Effect of light gas atom inclusions on the characteristics of laser-produced plasma ions

“…In most of the previous studies of the properties of multicomponent plasmas not much attention was given to light gas atoms, which are present in solid materials in the form of noncontrollable or specially created impurities. As a continuation of our previous work [9], here we study the effect of these impurities on the parameters of laser-produced plasma ions. It is obvious that these inclusions can change not only the physical properties of the materials, but also influence the formation of plasma ions [12].…”

“…Experiments were carried out on a static mass spectrometer with mass resolution of m/m = 100 and time-of-flight distance 362 cm [9]. The Nd : YAG laser beam was directed normal to the surface of the target.…”

“…LIS also shows the possibility of generating higher charge states. Many theoretical [7,8] and experimental [6,[9][10][11][12][13][14] works have been carried out in order to optimize the performance of the LIS and to determine important operating parameters such as the velocity, mass and charge-state distribution of the generated ion beam and plasma temperature. Haseroth and Hora [7] studied the physical mechanisms that lead to higher current of multicharged ions in laser-produced plasmas.…”

Conditions defining the mechanisms of the formation of light gas ions in multicomponent laser-produced plasmas

“…Experiments were carried out on a static mass spectrometer with a mass resolution of m/m = 100 and a TOF distance of 362 cm [16]. The Nd : YAG laser beam was directed normal to the surface of the target.…”

Temporal Narrowing of Neutrons Produced by High-Intensity Short-Pulse Lasers

“…However, as neutron probing techniques advance, a challenge is to create a source that is short in time for the observation of ultrafast (picosecond to nanosecond) phenomena. For neutron energies in the MeV range, neutron damage can be understood at the atomic scale: creating collision cascades, point defects, dislocation, or melts that could be observed in real time [1]. This is a highly topical subject for many technological applications: radiation hardness testing of semiconductors in aerospace, materials for fusion or fission reactors [2][3][4][5], particle accelerator vessels, or containers for storing radioactive nuclear wastes.…”