1.15 PW-850 J compressed beam demonstration using the PETAL facility.

The Petawatt Aquitaine Laser (PETAL) facility was designed and constructed by the French Commissariat à l'énergie atomique et aux énergies alternatives (CEA) as an additional PW beamline to the Laser MegaJoule (LMJ) facility. PETAL energy is limited to 1 kJ at the beginning due to the damage threshold of the final optics. In this paper, we present the commissioning of the PW PETAL beamline. The first kJ shots in the amplifier section with a large spectrum front end, the alignment of the synthetic aperture compression stage and the initial demonstration of the 1.15 PW @ 850 J operations in the compression stage are detailed. Issues encountered relating to damage to optics are also addressed.

[Postpartum adaptation of naturally delivered newborn infants. Preliminary results]. / Studio sull'adattamento post-partum del neonato da parto naturale. Risultati preliminari.

We report the preliminary data referring to a controlled study on the post-partum adaptation of the naturally delivered newborn. Apart from a greater incidence of benign jaundice, no differences have been found to date between the traditionally and naturally delivered neonates.