المؤلفون: Bellan, L., Akagi, T., Bolzon, B., Cara, P., Carin, Y., Cavenago, M., Chauvin, N., Comunian, M., Dzitko, H., Fagotti, E., Grespan, F., Kondo, K., Moya, I., Pisent, A., Podadera, I., Scantamburlo, F., Sugimoto, M.

المصدر: Journal of Physics: Conference Series ; volume 2244, issue 1, page 012078 ; ISSN 1742-6588 1742-6596

الوصف: The Linear IFMIF Prototype Accelerator (LIPAc) is a high intensity D + linear accelerator; demonstrator of the International Fusion Material Irradiation Facility (IFMIF). In summer 2019 the IFMIF/EVEDA Radio Frequency Quadrupole (RFQ) accelerated its nominal 125 mA deuteron (D + ) beam current up to 5 MeV, with 90% transmission for pulses of 1 ms at 1 Hz. This success was possible thanks to an intense previous campaign of modelization and measurements in order to characterize the RFQ input beam, which is affected by the ECR ion source extraction and the low energy beam transport. The simulation models used with the measurement benchmarks are here presented.

الإتاحة: https://doi.org/10.1088/1742-6596/2244/1/012078Test

المؤلفون: Chauvin, N., Zinoni, C., Francardi, M., Gerardino, A., Balet, L., Alloing, B., Li, L. H., Fiore, A.

المصدر: Phys. Rev. B 80, 241306(R) (2009)

مصطلحات موضوعية: Condensed Matter - Mesoscale and Nanoscale Physics

الوصف: We demonstrate that the presence of charge around a semiconductor quantum dot (QD) strongly affects its optical properties and produces non-resonant coupling to the modes of a microcavity. We first show that, besides (multi)exciton lines, a QD generates a spectrally broad emission which efficiently couples to cavity modes. Its temporal dynamics shows that it is related to the Coulomb interaction between the QD (multi)excitons and carriers in the adjacent wetting layer. This mechanism can be suppressed by the application of an electric field, making the QD closer to an ideal two-level system.
Comment: 12 pages, 4 figures

الوصول الحر: http://arxiv.org/abs/0907.3392Test

المؤلفون: Dumelié, N., Vernier, J.-P., Berthet, G., Vernier, H., Renard, J.-B., Rastogi, N., Wienhold, F., Combaz, D., Angot, M., Burgalat, J., Parent, F., Chauvin, N., Albora, G., Dagaut, P., Benoit, R., Kovilakam, M., Crevoisier, C., Joly, L.

المصدر: Bulletin of the American Meteorological Society; Jan2024, Vol. 105 Issue 1, pE105-E120, 16p

مصطلحات موضوعية: CARBONACEOUS aerosols, STRATOSPHERIC aerosols, WILDFIRES, AEROSOLS, TRACE gases, VOLCANIC eruptions, STRATOSPHERE, GREENHOUSE gases

مصطلحات جغرافية: REIMS (France), SAINT Vincent

مستخلص: Stratospheric aerosols are greatly influenced by medium-to-large volcanic eruptions. Over the last few years, extreme wildfires have been identified as new sources of stratospheric particles, in the form of carbonaceous aerosols injected by pyrocumulonimbus (pyroCb) events in the upper troposphere and lower stratosphere, associated with significant impacts on climate and ozone chemistry. To assess the impact of wildfires and volcanic eruptions on stratospheric aerosol loadings in the Northern Hemisphere, the Rapid Balloon Experiments for Sudden Aerosol Injection in the Stratosphere (REAS) project has been initiated. REAS is an international initiative that aims to respond to sudden events impacting stratospheric aerosol composition. Seventeen balloons were launched from Reims, eastern France, between November 2021 and January 2022 to quantify the atmospheric content for both aerosols and trace/greenhouse gases from the ground up to stratospheric levels. The main measurements concerned trace gases (CO/CO2 as tracers of smoke) and aerosol together with ozone using instruments such as a gas collector, optical particle counters, backscatter sondes, an aerosol sampler, an aerosol impactor, and ozonesondes. The Groupe de Spectrométrie Moléculaire et Atmosphérique (GSMA) launch facility provided unique possibilities of combining multiple measurements in one flight thanks to medium flights (corresponding to a 6 kg payload). While no major event impacted the stratosphere during the campaign, we particularly discuss the influence of the aged volcanic plume from La Soufrière volcano (Saint Vincent island) and smoke particles from series of pyroCb events that took place in North America. The burden as well as the optical and microphysical properties of the observed aerosols are quantified from these in situ observations in association with various satellite data. [ABSTRACT FROM AUTHOR]

: Copyright of Bulletin of the American Meteorological Society is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

المؤلفون: Francardi, M., Balet, L., Gerardino, A., Chauvin, N., Bitauld, D., Li, L. H., Alloing, B., Fiore, A.

مصطلحات موضوعية: Condensed Matter - Other Condensed Matter

الوصف: We report direct evidence of enhanced spontaneous emission in a photonic crystal (PhC) light-emitting diode. The device consists of p-i-n heterojunction embedded in a suspended membrane, comprising a layer of self-assembled quantum dots. Current is injected laterally from the periphery to the center of the PhC. A well-isolated emission peak at 1300nm from the PhC cavity mode is observed, and the enhancement of the spontaneous emission rate is clearly evidenced by time-resolved electroluminescence measurements, showing that our diode switches off in a time shorter than the bulk radiative and nonradiative lifetimes
Comment: 10 pages

الوصول الحر: http://arxiv.org/abs/0805.2750Test

المؤلفون: Ibarra A., Arbeiter F., Bernardi D., Krolas W., Cappelli M., Fischer U., Heidinger R., Martin-Fuertes F., Micciche G., Munoz A., Nitti F. S., Pinna T., Aiello A., Bazin N., Chauvin N., Chel S., Devanz G., Gordeev S., Regidor D., Schwab F.

المساهمون: Ibarra, A., Arbeiter, F., Bernardi, D., Krolas, W., Cappelli, M., Fischer, U., Heidinger, R., Martin-Fuertes, F., Micciche, G., Munoz, A., Nitti, F. S., Pinna, T., Aiello, A., Bazin, N., Chauvin, N., Chel, S., Devanz, G., Gordeev, S., Regidor, D., Schwab, F.

مصطلحات موضوعية: facilities engineering, fusion-like neutron source, materials irradiation

الوصف: The need of a neutron source for the qualification of materials to be used in future fusion power reactors have been recognized in the European (EU) fusion programme for many years. The construction and exploitation of this facility is presently considered to be in the critical path of DEMO. This issue prompted the EU to launch activities for the design and engineering of the IFMIF-DONES (International Fusion Materials Irradiation Facility-DEMO Oriented Neutron Source) facility based on and taking profit of the results obtained in the IFMIF/EVEDA (Engineering Validation and Engineering Design Activities) project, presently conducted in the framework of the EU-Japan Bilateral Agreement on the Broader Approach to Fusion. These activities and R&D work for the IFMIF-DONES Plant are presently taking place in the framework of a work package of the EUROfusion Consortium, in direct collaboration with the Fusion for Energy Organization. The main objective of these activities is to consolidate the design and the underlying technology basis in order to be ready for IFMIF-DONES construction as early as possible. The paper presents the main engineering results for a generic site obtained during the first years of design work, as indicated in the recently released IFMIF-DONES Preliminary Engineering Design Report, making emphasis on the design evolution from previous phases and on the critical issues to be further developed in the near future. The proposed European site to host the facility (Granada, Spain) is briefly introduced as well.

العلاقة: volume:59; issue:6; firstpage:065002; journal:NUCLEAR FUSION; http://hdl.handle.net/20.500.12079/52569Test; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85067578674; https://iopscience.iop.org/article/10.1088/1741-4326/ab0d57/pdfTest

الإتاحة: https://doi.org/20.500.12079/52569Test
https://doi.org/10.1088/1741-4326/ab0d57Test
https://hdl.handle.net/20.500.12079/52569Test

المؤلفون: Mikityuk, K., Álvarez Velarde, F., Bankhead, L., Bubelis, E., Bukasa Kampata, N., Buligins, L., Carluec, B., Chauvin, N., Demaziere, C., Fridman, E., García Herranz, N., Gerbeth, G., Girardi, E., Girault, N., Gradeck, M., Guidez, J., Hering, E., Krepel, J., Latge, C., Lindley, B., Lombardo, C., Payot, F., Rineiski, A., Schwageraus, E., Seubert, A., Tsige-Tamirat, H.

مصطلحات موضوعية: ddc:600, Technology, info:eu-repo/classification/ddc/600

وصف الملف: application/pdf

العلاقة: https://publikationen.bibliothek.kit.edu/1000096880Test; https://publikationen.bibliothek.kit.edu/1000096880/35824262Test; https://doi.org/10.5445/IR/1000096880Test

الإتاحة: https://doi.org/10.5445/IR/1000096880Test
https://publikationen.bibliothek.kit.edu/1000096880Test
https://publikationen.bibliothek.kit.edu/1000096880/35824262Test

المؤلفون: Bellan, L., Pisent, A., Cavenago, M., Comunian, M., Fagotti, E., Chauvin, N., Gérardin, F.

المصدر: AIP Conference Proceedings ; ISSN 0094-243X

الإتاحة: https://doi.org/10.1063/1.5053368Test

المؤلفون: Berezov, R., Chauvin, N., Clausen, U., Delferriere, O., Fils, J., Gauthier, Y., Hollinger, R., Knie, K., Kleffner, C., Trueller, J., Tuske, O., Ullmann, C.

المصدر: AIP Conference Proceedings ; ISSN 0094-243X

الإتاحة: https://doi.org/10.1063/1.5053269Test

المؤلفون: Ibarra, A., Arbeiter, F., Bernardi, D., Krolas, W., Cappelli, M., Fischer, U., Heidinger, R., Martin-Fuertes, F., Micciché, G., Muñoz, A., Nitti, F. S., Pinna, T., Aiello, A., Bazin, N., Chauvin, N., Chel, S., Devanz, G., Gordeev, S., Regidor, D., Schwab, F.

المصدر: Nuclear fusion, 59 (6), 065002 ; ISSN: 0029-5515, 1741-4326

مصطلحات موضوعية: ddc:600, Technology, info:eu-repo/classification/ddc/600

العلاقة: info:eu-repo/semantics/altIdentifier/wos/000467685900001; info:eu-repo/semantics/altIdentifier/issn/0029-5515; info:eu-repo/semantics/altIdentifier/issn/1741-4326; https://publikationen.bibliothek.kit.edu/1000096030Test

الإتاحة: https://doi.org/10.1088/1741-4326/ab0d57Test
https://publikationen.bibliothek.kit.edu/1000096030Test

المؤلفون: Staicu, D., Chauvin, N., Martin, Pm., Lamontagne, J., Sabathier, C., Fedorov, A., van Til, S., Vewerft, M., Hozer, Z., Belovsky, L., Calabrese, R., Trillon, G., Portier, S.

المساهمون: European Commission - Joint Research Centre Karlsruhe (JRC), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)

المصدر: FR17 ; https://hal.science/hal-02419631Test ; FR17, Jun 2017, Beloyarsk, Russia

مصطلحات موضوعية: [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th]

جغرافية الموضوع: Beloyarsk, Russia

الوصف: International audience ; The thermal conductivity is an important parameter for the assessment of the FBR fuel thermal behavior during irradiation. In this study, the effect of burn-up on the thermal conductivity of FBR MOX fuel is investigated experimentallly. The thermal diffuvitiy of FBR fuel with a burn-up of 13 at% was measured by the laser flash technique and the thermal conductivity was deduced. It is shown that the thermal conductivity is higher than could be predicted with correlations issued from LWR UO2 and MOX results. This effect is interpreted as being due to the diffusion of fission products out of the fuel matrix, leading to the formation of the JOG.

العلاقة: hal-02419631; https://hal.science/hal-02419631Test; https://hal.science/hal-02419631/documentTest; https://hal.science/hal-02419631/file/201700000515.pdfTest

الإتاحة: https://hal.science/hal-02419631Test
https://hal.science/hal-02419631/documentTest
https://hal.science/hal-02419631/file/201700000515.pdfTest