Far-Infrared Conductivity Measurements of Pair Breaking in Superconducting Nb0.5_{0.5}Ti0.5_{0.5}N Thin Films Induced by an External Magnetic Field

We report the complex optical conductivity of a superconducting thin-film of Nb$_{0.5}$Ti$_{0.5}$N in an external magnetic field. The field was applied parallel to the film surface and the conductivity extracted from far-infrared transmission and reflection measurements. The real part shows the superconducting gap, which we observe to be suppressed by the applied magnetic field. We compare our results with the pair-breaking theory of Abrikosov and Gor'kov and confirm directly the theory's validity for the optical conductivity.Comment: 4 pages, 3 figure

Status and challenges of Spiral2 SRF linac

MOIOA02

Ultrahigh finesse Fabry-Perot superconducting resonator

We have built a microwave Fabry-Perot resonator made of diamond-machined copper mirrors coated with superconducting niobium. Its damping time (Tc = 130 ms at 51 GHz and 0.8 K) corresponds to a finesse of 4.6 x 109, the highest ever reached for a Fabry-Perot in any frequency range. This result opens novel perspectives for quantum information, decoherence and non-locality studies

SPIRAL2 cryomodule production result and analyses

THIOB02International audienceThe production and qualification of the SPIRAL2 cryomodules are close to the end. Their performances arenow well established. This paper will explain the path followed to the good achievements, and show somestatistical analyses to be used for future projects. How far can we push the performances? What cryogenicsconsumption shall we take as design values

Effects of harvest time and growth conditions on storage and post-storage quality of fresh peppers (capsicum annuum L

Abstract Studies were carried out to see the effect of modified atmosphere packaging (MAP) on extending postharvest longevity of mid-season, late-season and greenhouse grown pepper fruits stored at 8 and 20ºC. Also, effects of MAP on post-storage quality of peppers stored at 20ºC were determined. Significant varietal differences in water loss and turgidity were observed in ambient atmosphere at each storage temperature. 'Keystone' (bell pepper) fruits had the lowest weight and turgidity loss followed by 'NuMex R Naky' (long green) and 'Santa Fe Grande' (yellow wax). Storage life for late-season field harvested peppers placed in ambient atmosphere was 10 to 14 days at 8ºC, whereas it was less than 7 days at 20ºC. Late-season field harvested peppers lost their quality at 8ºC primarily due to disease (fungal decay) and at 20ºC due to wilting and disease. Greenhouse grown peppers lost their quality after approximately 10 days at 8ºC and 5 days at 20ºC due to high water loss. MAP reduced postharvest water loss, maintained turgidity of fruits and delayed red colour development and disease. Compared to non-packaged fruits MAP extended postharvest life for another 7 days at 8ºC and 10 days at 20ºC as compared to non-packaged fruits held at these temperatures. Postharvest water loss and turgidity were similar for fruits stored in packages with and without 26-guage holes at 8 and 20ºC. Packaging was successful in extending the postharvest storage life of both mid-season field picked and greenhouse grown peppers. Packaging did not affect post-storage quality of fresh peppers as after removal of packaging fruits started dehydrating like the ones kept in open trays