Search Results - "Redmer, R"

The effect of cloudy atmospheres on the thermal evolution of warm giant planets from an interior modelling perspective by Poser, A J, Redmer, R

“…ABSTRACT We are interested in the influence of cloudy atmospheres on the thermal radius evolution of warm exoplanets from an interior modelling perspective. By…”
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New indication for a dichotomy in the interior structure of Uranus and Neptune from the application of modified shape and rotation data by Nettelmann, N., Helled, R., Fortney, J.J., Redmer, R.

“…Since the Voyager fly-bys of Uranus and Neptune, improved gravity field data have been derived from long-term observations of the planets' satellite motions,…”
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JUPITER MODELS WITH IMPROVED AB INITIO HYDROGEN EQUATION OF STATE (H-REOS.2) by NETTELMANN, N, BECKER, A, HOLST, B, REDMER, R

“…The amount and distribution of heavy elements in Jupiter gives indications on the process of its formation and evolution. Core mass and metallicity…”
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Direct observation of an abrupt insulator-to-metal transition in dense liquid deuterium by Knudson, M. D., Desjarlais, M. P., Becker, A., Lemke, R. W., Cochrane, K. R., Savage, M. E., Bliss, D. E., Mattsson, T. R., Redmer, R.

“…Eighty years ago, it was proposed that solid hydrogen would become metallic at sufficiently high density. Despite numerous investigations, this transition has…”
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Conductivity of warm dense matter including electron-electron collisions by Reinholz, H, Röpke, G, Rosmej, S, Redmer, R

“…We present an approach that can resolve the controversy with respect to the role of electron-electron collisions in calculating the dynamic conductivity of…”
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Thermal Evolution and Structure Models of the Transiting Super-Earth GJ 1214b by Nettelmann, N, Fortney, J. J, Kramm, U, Redmer, R

“…The planet GJ 1214b is the second known super-Earth with a measured mass and radius. Orbiting a quiet M star, it receives considerably less mass-loss driving…”
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Metallization of Shock-Compressed Liquid Ammonia by Ravasio, A, Bethkenhagen, M, Hernandez, J-A, Benuzzi-Mounaix, A, Datchi, F, French, M, Guarguaglini, M, Lefevre, F, Ninet, S, Redmer, R, Vinci, T

“…Ammonia is predicted to be one of the major components in the depths of the ice giant planets Uranus and Neptune. Their dynamics, evolution, and interior…”
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Uranus evolution models with simple thermal boundary layers by Nettelmann, N., Wang, K., Fortney, J.J., Hamel, S., Yellamilli, S., Bethkenhagen, M., Redmer, R.

“…•Thermal boundary between H/He-rich and ice-rich shells can explain the low luminosity.•We suggest that atmospheric thermal equilibrium with the incident flux…”
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Planetary Ices and the Linear Mixing Approximation by Bethkenhagen, M., Meyer, E. R., Hamel, S., Nettelmann, N., French, M., Scheibe, L., Ticknor, C., Collins, L. A., Kress, J. D., Fortney, J. J., Redmer, R.

“…The validity of the widely used linear mixing approximation (LMA) for the equations of state (EOSs) of planetary ices is investigated at pressure-temperature…”
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Heterogeneous to homogeneous melting transition visualized with ultrafast electron diffraction by Mo, M Z, Chen, Z, Li, R K, Dunning, M, Witte, B B L, Baldwin, J K, Fletcher, L B, Kim, J B, Ng, A, Redmer, R, Reid, A H, Shekhar, P, Shen, X Z, Shen, M, Sokolowski-Tinten, K, Tsui, Y Y, Wang, Y Q, Zheng, Q, Wang, X J, Glenzer, S H

“…The ultrafast laser excitation of matters leads to nonequilibrium states with complex solid-liquid phase-transition dynamics. We used electron diffraction at…”
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Warm Dense Matter Demonstrating Non-Drude Conductivity from Observations of Nonlinear Plasmon Damping by Witte, B B L, Fletcher, L B, Galtier, E, Gamboa, E, Lee, H J, Zastrau, U, Redmer, R, Glenzer, S H, Sperling, P

“…We present simulations using finite-temperature density-functional-theory molecular dynamics to calculate the dynamic electrical conductivity in warm dense…”
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Observing the onset of pressure-driven K-shell delocalization by Döppner, T., Bethkenhagen, M., Kraus, D., Neumayer, P., Chapman, D. A., Bachmann, B., Baggott, R. A., Böhme, M. P., Divol, L., Falcone, R. W., Fletcher, L. B., Landen, O. L., MacDonald, M. J., Saunders, A. M., Schörner, M., Sterne, P. A., Vorberger, J., Witte, B. B. L., Yi, A., Redmer, R., Glenzer, S. H., Gericke, D. O.

“…The gravitational pressure in many astrophysical objects exceeds one gigabar (one billion atmospheres) 1 – 3 , creating extreme conditions where the distance…”
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Ultrafast multi-cycle terahertz measurements of the electrical conductivity in strongly excited solids by Chen, Z., Curry, C. B., Zhang, R., Treffert, F., Stojanovic, N., Toleikis, S., Pan, R., Gauthier, M., Zapolnova, E., Seipp, L. E., Weinmann, A., Mo, M. Z., Kim, J. B., Witte, B. B. L., Bajt, S., Usenko, S., Soufli, R., Pardini, T., Hau-Riege, S., Burcklen, C., Schein, J., Redmer, R., Tsui, Y. Y., Ofori-Okai, B. K., Glenzer, S. H.

“…Key insights in materials at extreme temperatures and pressures can be gained by accurate measurements that determine the electrical conductivity…”
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Probing the interiors of the ice giants: shock compression of water to 700 GPa and 3.8 g/cm by Knudson, M D, Desjarlais, M P, Lemke, R W, Mattsson, T R, French, M, Nettelmann, N, Redmer, R

“…Recently, there has been a tremendous increase in the number of identified extrasolar planetary systems. Our understanding of their formation is tied to…”
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Observations of plasmons in warm dense matter by Glenzer, S H, Landen, O L, Neumayer, P, Lee, R W, Widmann, K, Pollaine, S W, Wallace, R J, Gregori, G, Höll, A, Bornath, T, Thiele, R, Schwarz, V, Kraeft, W-D, Redmer, R

“…We present the first collective x-ray scattering measurements of plasmons in solid-density plasmas. The forward scattering spectra of a laser-produced…”
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Melting curve of superionic ammonia at planetary interior conditions by Hernandez, J.-A., Bethkenhagen, M., Ninet, S., French, M., Benuzzi-Mounaix, A., Datchi, F., Guarguaglini, M., Lefevre, F., Occelli, F., Redmer, R., Vinci, T., Ravasio, A.

“…Under high pressures and temperatures, molecular systems with substantial polarization charges, such as ammonia and water, are predicted to form superionic…”
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Author Correction: Melting curve of superionic ammonia at planetary interior conditions by Hernandez, J.-A., Bethkenhagen, M., Ninet, S., French, M., Benuzzi-Mounaix, A., Datchi, F., Guarguaglini, M., Lefevre, F., Occelli, F., Redmer, R., Vinci, T., Ravasio, A.

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Laser-driven shock compression of “synthetic planetary mixtures” of water, ethanol, and ammonia by Guarguaglini, M., Hernandez, J.-A., Okuchi, T., Barroso, P., Benuzzi-Mounaix, A., Bethkenhagen, M., Bolis, R., Brambrink, E., French, M., Fujimoto, Y., Kodama, R., Koenig, M., Lefevre, F., Miyanishi, K., Ozaki, N., Redmer, R., Sano, T., Umeda, Y., Vinci, T., Ravasio, A.

“…Water, methane, and ammonia are commonly considered to be the key components of the interiors of Uranus and Neptune. Modelling the planets’ internal structure,…”
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Towards performing high‐resolution inelastic X‐ray scattering measurements at hard X‐ray free‐electron lasers coupled with energetic laser drivers by Descamps, A., Ofori-Okai, B. K., Baldwin, J. K., Chen, Z., Fletcher, L. B., Glenzer, S. H., Hartley, N. J., Hasting, J. B., Khaghani, D., Mo, M., Nagler, B., Recoules, V., Redmer, R., Schörner, M., Sun, P., Wang, Y. Q., White, T. G., McBride, E. E.

“…High‐resolution inelastic X‐ray scattering is an established technique in the synchrotron community, used to investigate collective low‐frequency responses of…”
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X-ray Thomson-scattering measurements of density and temperature in shock-compressed beryllium by Lee, H J, Neumayer, P, Castor, J, Döppner, T, Falcone, R W, Fortmann, C, Hammel, B A, Kritcher, A L, Landen, O L, Lee, R W, Meyerhofer, D D, Munro, D H, Redmer, R, Regan, S P, Weber, S, Glenzer, S H

“…We present the first x-ray scattering measurements of the state of compression and heating in laser irradiated solid beryllium. The scattered spectra at two…”
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