Reconstruction of lateral coherence and 2D emittance in plasma betatron X-ray sources.

X-ray sources have a strong social impact, being implemented for biomedical research, material and environmental sciences. Nowadays, compact and accessible sources are made using lasers. We report evidence of nontrivial spectral-angular correlations in a laser-driven betatron X-ray source.

The INFN-LNF present and future accelerator-based light facilities.

The INFN-Frascati National Laboratory (LNF) is nowadays running a 0.51 GeV electron-positron collider, DA NE, that also represents the synchrotron radiation source of the beamlines of the DA NE-Light facility. Not being DA NE dedicated to synchrotron radiations activities, the DA NE-Light facility can use it mainly in parasitic mode.

Outcome Analysis of Carotid Cross-Clamp Intolerance during Carotid Endarterectomy under Locoregional Anesthesia.

Background: To analyze the predictors and describe the outcomes of cross-clamp intolerance (CCI) and the results of the use of carotid endarterectomy (CEA) with shunting or a shift strategy to immediate carotid artery stenting (CAS) in this setting.

Methods: Between January 2008 and December 2015, 385 patients were elected for single-sided, isolated CEA under locoregional anesthesia. In case of CCI, CEA with shunt was used selectively, whereas indication to immediate conversion to CAS was the immediate onset and severe persistent deterioration of the neurologic status, and/or local technical difficulties to perform endarterectomy.

Risk factors analysis of thromboembolectomy for acute thromboembolic lower extremity ischemia in native arteries.

Background: Aim of this study is to report the results of thromboembolectomy (ThEmb) for acute thromboembolic lower limb ischemia (ATLI) in native arteries and to create a predictive score for amputation-free survival (AFS) at 30 days.

Methods: It is a single center, retrospective analysis of a four years period. All patients had ThEmb: adjunctive procedures included femoral and/or popliteal endarterectomy in 30 (18.

Numerical and analytical models to study the laser-driven plasma perturbation in a dielectric gas-filled capillary waveguide.

An alternative fast approach to study the propagation of an intense laser pulse through a dielectric capillary waveguide filled with plasma is presented. The numerical model computes the evolution of the capillary mode coupling coefficients and from these the properties of the laser and plasma response are retrieved. Moreover, an analytical description of the process is presented and compared to the numerical model.

Strong nonlinear terahertz response induced by Dirac surface states in Bi2Se3 topological insulator.

Electrons with a linear energy/momentum dispersion are called massless Dirac electrons and represent the low-energy excitations in exotic materials such as graphene and topological insulators. Dirac electrons are characterized by notable properties such as a high mobility, a tunable density and, in topological insulators, a protection against backscattering through the spin-momentum locking mechanism. All those properties make graphene and topological insulators appealing for plasmonics applications.

Mapping the transverse coherence of the self amplified spontaneous emission of a free-electron laser with the heterodyne speckle method.

The two-dimensional single shot transverse coherence of the Self-Amplified Spontaneous Emission of the SPARC_LAB Free-Electron Laser was measured through the statistical analysis of a speckle field produced by heterodyning the radiation beam with a huge number of reference waves, scattered by a suspension of particles. In this paper we report the measurements and the evaluation of the transverse coherence along the SPARC_LAB undulator modules. The measure method was demonstrated to be precise and robust, it does not require any a priori assumptions and can be implemented over a wide range of wavelengths, from the optical radiation to the x-rays.

Combined endovascular repair of a celiac trunk aneurysm using celiac-splenic stent graft and hepatic artery embolization.

Celiac trunk aneurysms are rare and usually asymptomatic lesions. However, treatment is generally warranted to avoid catastrophic rupture. We report a case of a 70-year-old man who sought care for a celiac trunk aneurysm close to the hepatosplenic bifurcation managed endovascularly by using a combined treatment of celiac-splenic stent-graft implantation and hepatic artery embolization.