Abstract We studied the effects of Coulomb potential on high-order harmonic generation (HHG) numerically and analytically. focus influence emission times HHG associated with specific electron trajectories. By using a numerical procedure based solution time-dependent Schrödinger equation (TDSE) in three dimensions, we extract both for long short compare TDSE predictions those Coulomb-modified mo...

Recent measurements on high-order harmonic generation (HHG) from N 2 aligned perpendicular to the driving laser polarization (B K McFarland et al 2008 Science 322 1232) have shown a maximum at the rotational half-revival. This has been interpreted as the signature of the HHG contribution from the molecular orbital just below the highest occupied molecular orbital (HOMO). By using the recently d...

OBJECTIVE The aim of this study is to evaluate the clinical course of intracranial aneurysm in patients aged 65 years and older and the immediate outcome after its aggressive management. MATERIALS AND METHODS We performed a retrospective analysis using the medical records of 159 elderly patients managed at our institute from September 2008 to December 2013. Obtained clinical information inclu...

Neurodevelopment as Gesell development scores (GDSs) in relation to mercury exposure in infants (<6 months of age) of one urban center and two rural villages, respectively, of fisherman and cassiterite miners. Mean total hair-Hg (HHg) concentrations of infants from Itapuã (3.95 ± 1.8 ppm) were statistically (P = 0.0001) different from those of infants from Porto Velho (3.84 ± 5.5 ppm) and Bom F...

Over the last two decades the interaction of atoms with intense laser light has been a rich area of research with many interesting and important discoveries. One of these major findings has been high-harmonic generation ~HHG!; in this process the strongly driven atomic system reradiates energy at odd multiples ~owing to the symmetry of the process! of the driving frequency. Using HHG it has bee...

We report on high-order harmonic (HHG) two-source interferometry (TSI) in molecular gases. We used a 0-π phase plate to create two bright spots at the focus of a lens by converting a Gaussian laser beam into a TEM01 Transverse Electromagnetic Mode. The two bright foci produce two synchronized HHG sources. One of them is used to probe on-going dynamics in the generating medium, while the other s...

the fact that the stress response affects testicular function in several animal species, has been established for several decades. the aim of the present review was to describe how the mechanisms involved in the acute stress response affect directly or indirectly the testicular function at different levels. Both neuroendocrine axes linked to the stress response, i.e., the sympathetic-adrenomedu...

We have theoretically studied the field-strength-dependent high-order harmonic generation (HHG) from doped systems like nanosize or bulk materials. Our results show that when amplitude of vector potential ${A}_{\mathrm{peak}}$ driving laser reaches half-width Brillouin zone ($\ensuremath{\pi}/{a}_{0}$), yield undoped is larger than systems. The band-climbing process enhances interband transitio...

Abstract We present the results of an experiment investigating generation high-order harmonics by a femtosecond near-infrared (NIR) laser pulse in presence extreme ultraviolet (XUV) field provided free-electron (FEL), process referred to as XUV-assisted harmonic (HHG). Our experimental findings show that XUV can lead small enhancement yield when and NIR pulses overlap time, while strong decreas...