Results 11 to 20 of about 307 (107)
Evidence against solar influence on nuclear decay constants [PDF]
Physics Letters B, 2016 The hypothesis that proximity to the Sun causes variation of decay constants at permille level has been tested and disproved. Repeated activity measurements of mono-radionuclide sources were performed over periods from 200 days up to four decades at 14 ...S. Pommé, H. Stroh, J. Paepen, R. Van Ammel, M. Marouli, T. Altzitzoglou, M. Hult, K. Kossert, O. Nähle, H. Schrader, F. Juget, C. Bailat, Y. Nedjadi, F. Bochud, T. Buchillier, C. Michotte, S. Courte, M.W. van Rooy, M.J. van Staden, J. Lubbe, B.R.S. Simpson, A. Fazio, P. De Felice, T.W. Jackson, W.M. Van Wyngaardt, M.I. Reinhard, J. Golya, S. Bourke, T. Roy, R. Galea, J.D. Keightley, K.M. Ferreira, S.M. Collins, A. Ceccatelli, M. Unterweger, R. Fitzgerald, D.E. Bergeron, L. Pibida, L. Verheyen, M. Bruggeman, B. Vodenik, M. Korun, V. Chisté, M.-N. Amiot +43 moredoaj +5 more sourcesNucleosynthesis and Nucleo-Cosmochronology
EAS Publications Series, 2004 I discuss a few selected topics on nucleosynthesis and nucleo-cosmochronology in faint, if not totally illusory, hopes of helping to gain a clear perspective of the future astronuclear physics. First I illustrate a few puzzles that remain to be solved by observational astronomy, theoretical astrophysics, and some nuclear physics experiments so as to ...Arnould, Marcel, Goriely, Stéphanecore +5 more sourcesPhotoneutron cross section measurements on 186W, 187Re and 188Os for cosmochronology
Nuclear Physics A, 2005 Cross sections of the 186W, 187Re, 188Os (γ,n) reactions were measured using quasi monochromatic γ-ray beams from laser Compton scattering (LCS), and results for the latter reaction are presented here. Neutron capture cross sections of the inverse reactions were evaluated by the Hauser-Feshbach statistical calculation where the experimental data were ...Shizuma, Toshiyuki, Utsunomiya, Hiroaki, Goko, Shinji, Mohr, Peter, Hayakawa, Takehito, Makinaga, Ayano, Hara, K.Y., Ohgaki, Hideaki, Lui, Yiu-Wing, Goriely, Stéphane +9 moreopenaire +4 more sourcesDirect determination of the atomic mass difference of Re187 and Os187 for neutrino physics and cosmochronology
Physical Review C - Nuclear Physics, 2016 For the first time a direct determination of the atomic mass difference of 187Re and 187Os has been performed with the Penning-trap mass spectrometer SHIPTRAP applying the novel phase-imaging ion-cyclotron-resonance technique. The obtained value of 2492(30stat)(15sys) eV is in excellent agreement with the Q values determined indirectly with ...D. A. Nesterenko, S. Eliseev, K. Blaum, M. Block, S. Chenmarev, A. Dörr, C. Droese, P. E. Filianin, M. Goncharov, E. Minaya Ramirez, Yu. N. Novikov, L. Schweikhard, V. V. Simon +12 moreopenaire +3 more sourcesConstraining the Evolution of ZZ Ceti [PDF]
, 2003 We report our analysis of the stability of pulsation periods in the DAV star (pulsating hydrogen atmosphere white dwarf) ZZ Ceti, also called R548. Based on observations that span 31 years, we conclude that the period 213.132605 s observed in ZZ Ceti ...G. Handler, J. N. Fu, S. O. Kepler, F. Johannessen, M. A. Wood, N. Silvestri, E. W. Klumpe, S. D. Kawaler, J. Krzesiński, D. Sanwal, T. von Hippel, J. Matthews, N. Dolez, M. D. Reed, M. Chevreton, X. J. Jiang, F. Mullally, S. Bernabei, S. Zoła, A. Kanaan, K. Sekiguchi, R. Kalytis, D. W. Kurtz, R. R. Shobbrook, M. Müller, L. Fraga, E. O. Ofek, R. Janulis, P. Moskalik, A. S. Mukadam, O. Súarez, A. Ulla, D. Ališauskas, M. S. Cunha, S. Joshi, D. J. Sullivan, D. E. Winget, P. Ibbetson, D. O’Donoghue, E. G. Meištas, J. A. Guzik, W. Ogłoza, P. Bergeron, S. J. Kleinman, D. W. Xu, R. Riddle, T. J. Ahrens, G. Fontaine, T. S. Metcalfe, M. S. O’Brien, J-E. Solheim, T. K. Watson, D. Kilkenny, R. E. Nather, P. Birch, O. Giovannini, P. A. Bradley, G. Vauclair, A. F. M. Costa, M. Kilic, A. Nitta, R. Silvotti, E. Leibowitz, B.N. Ashoka, J. M. Gonzalez-Perez, M. Manteiga +65 morecore +7 more sourcesToward precision cosmochronology [PDF]
Astronomy & Astrophysics, 2020 The continuous cooling of a white dwarf is punctuated by events that affect its cooling rate. The most significant of these events is the crystallization of its core, a phase transition that occurs once the C/O interior has cooled down below a critical temperature.Simon Blouin, Jérôme Daligault, Didier Saumon, Antoine Bédard, Pierre Brassard +4 moreopenaire +2 more sourcesPROTOGALACTIC MERGERS AND COSMOCHRONOLOGY
The Astrophysical Journal, 1993 We construct schematic models for chemical evolution and cosmochronology within the expanding and collapsing protogalactic halo followed by formation of the local disk. Star formation is associated with both the rate of protogalactic mergers and the intrinsic gas density of protogalactic clouds and the disk.G. J. Mathews, D. N. Schrammopenaire +1 more sourceNeutron capture cross section measurements for nuclear astrophysics at CERN n_TOF [PDF]
, 2004 A series of neutron capture cross section measurements of interest to nuclear astrophysics have been recently performed at n-TOF, the neutron spallation source operating at CERN.Soares, J, Duran, I., Rullhusen, P., Lukic, S., Pignatari, M., C. Rubbia, Lamboudis, C, J. Andrzejewski, Wendler, H, C. Pretel, N. Colonna, Rubbia, C, Ketlerov, V., Koehler, P, Plag, R., Lorusso, G., Cortes, G, Isaev, S., Kerveno, M., Vannini, G., G. Aerts, J. C. Soares, Marrone, S., Dahlfors, M., Lozano, M., A. Poch, Berthoumieux, E, F. Voss, Perrot, L., Ferreira-Marques, R, Cano-Ott, D., Tagliente, G., Tagliente, G, Dahlfors, N., S. Lukic, Lorusso, G, Reifarth, R., Villamarin, D., W. Furman, Paradela, C., V. Ketlerov, Tain, J. L., Domingo-Pardo, C, Moreau, C., Tavora, L, Dolfini, R., Milazzo, P, Rauscher, T, Vaz, P., Stephan, C., R. Haight, Rosetti, M, Salgado, J, M. Mosconi, M. Rosetti, Jericha, E., A. Ventura, Pignatari, M, Plompen, A, Pretel Sánchez, Carme, I. Lopes, A. Molina Coballes, Ferrant, L., Oberhummer, H., C. Lamboudis, Tassan-Got, L, Molina-Coballes, A., Calviño, F, Mosconi, M, Furman, W, Lozano, M, Berthoumieux, E., Becvar, F., David, S., S. Dababneh, Milazzo, P.M., Wiescher, M, Frais-Kolbl, H., G. Badurek, Cennini, P, E. Jericha, Chiaveri, E, Perlado, J, J. Marganiec, Aerts, G., Álvarez-Pol, H, A. Policarpo, Reifarth, R, Chepel, V, Gallino, R, R. Reifarth, Cortes, G., Ketlerov, V, J. Benlliure, Griesmayer, E, F. Gunsing, Gunsing, F, Rapp, W., Capote, R, Pretel, C., H. Oberhummer, A. Plukis, M. Krticka, Policarpo, A, Karadimos, D., Haight, R, Lindote, A, F. Alvarez Velarde, Griesmayer, E., Quesada, J, Calviño Tavares, Francisco, Baumann, P., Neves, F., F. Calvino, Goncalves, I., D. Karadimos, Käppeler, F, Ventura, A, R. Ferreira Marques, Tain, J.L., Aerts, G, C. Paradela, A. Mengoni, Wendler, H., Haas, B., G. Cortes, Capote, R., Konovalov, V., J. Cox, Tain, J, D. Cano Ott, T. Papaevangelou, J. Pancin, H. Alvarez Pol, Y. Kadi, V. Vlachoudis, Pancin, J., Oberhummer, H, F. Gramegna, Badurek, G, Rosetti, M., Rubbia, C., Cox, J, M. C. Vincente, VANNINI, GIANNI, Andriamonje, S., Gramegna, F, Cennini, P., Gonzalez-Romero, E, R. Terlizzi, P. Mastinu, R. Gallino, Haight, R., Kadi, Y., Calvino, F., Wiescher, M., Plompen, A., H. Wendler, David, S, P. Vaz, Pavlik, A, Goncalves, I, Frais-Kölbl, H, R. Plag, Rosetti, N., P. Cennini, Alvarez-Velarde, F., Stephan, C, Badurek, G., Lindote, A., P. Pavlopoulos, Cortina, D., R. Dolfini, Benlliure, J, Voss, F, Soares, J.C., F. Neves, Poch, A, Andriamonje, S, Isaev, S, Marganiec, J, Lopes, I., Vincente, M, W. Rapp, Soares, J. C., C. Moreau, Colonna, N., Milazzo, P. M., Rullhusen, P, Terlizzi, R., Abbondanno, U., F. Kaeppeler, M. Lozano, S. Isaev, Pavlik, A., Plag, R, Ventura, A., Poch Parés, Agustí, Perlado, J.M., E. Griesmayer, J. L. Tain, Benlliure, J., Goverdovski, A., Krtička, M, A. Couture, Vlachoudis, V, E. Chiaveri, Mastinu, P, Lamboudis, C., Perlado, J. M., Gallino, R., J. Martinez Val, Cano-Ott, D, Salgado, J., Couture, A., Vaz30, P., Gunsing, F., Andrzejewski, J, Molina-Coballes, A, L. Tavora, Jericha, E, Gramegna, F., Baumann, P, K. Wisshak, Policarpo, A., Heil, M, Bečvář, F, Wisshak, K, Colonna, N, M. Embid Segura, Plukis, A., C. Stephan, Marganiec, J., Terlizzi, R, P. Koehler, I. Goncalves, Neves, F, Mosconi, M., Lopes, I, Marrone, S, Herrera-Martinez, A, Dababneh, S, M. Dahlfors, Plukis, A, Cox, J., J. Salgado, Vincente, M.C., L. Ferrant, Quesada, J., Rudolf, G, G. Rudolf, A. Ferrari, H. Frais Koelbl, V. Chepel, A. Plompen, F. Becvar, A. Goverdoski, Mengoni, A., S. O'Brien, Taín Enríquez, José Luis, Mengoni, A, Ferrari, A., E. Berthoumieux, Vlachoudis, V., Villamarin, D, U. Abbondanno, Mastinu, P., J. Quesada, Karadimos, D, D. Cortina, Domingo-Pardo, C., Pavlopoulos, P, Alvarez-Pol, H., Voss, F., Martinez-Val, J., G. Tagliente, Tassan-Got, L., S. Marrone, Dababneh, S., Pavlopoulos, P., Tavora, L., Embid-Segura, M., Furman, W., Ferrant, L, M. Kerveno, Alvarez-Velarde, F, M. Heil, Goverdovski, A, Kadi, Y, Papaevangelou, T, Vaz, P, Pretel, C, Cortina, D, Paradela, C, Heil, M., Poch, A., Haight, Y., Krticka, M., Andrzejewski, J., Haas, B, O`Brien, S., J. M. Perlado, Griesmaye, E., Papaevangelou, T., Vincente, M. C., R. Capote, S. Andriamonje, V. Konovalov, Ferreira-Marques, R., B. Haas, A. Lindote, G. Lorusso, O'Brien, S., L. Tassan Got, Koehler, P., E. Gonzalez Romero, Pancin, J, Perrot, L, Cortés Rossell, Guillem Pere, S. David, P. M. Milazzo, Ferrari, A, Dolfini, R, Embid-Segura, M, Konovalov, V, Gonzalez-Romero, E., Dahlfors, M, Vannini, G, Leeb, H., P. Rullhusen, T. Rauscher, Chepel, V., Abbondanno, U, Rapp, W, H. Leeb, Kappeler, F., I. Duran, Duran, I, Martinez-Val, J, A. Herrera Martinez, Herrera-Martinez, A., Moreau, C, P. Baumann, Rauscher, T., D. Villamarin, M. Wiescher, O'Brien, S, Couture, A, C. Domingo Pardo, L. Perrot, Rudolf, G., Leeb, H, M. Pignatari, A. Pavlik, Wisshak, K., Frais-Koelbl, H., Chiaveri, E., Lukic, S, Oberhummer, Heinz, Leeb, Helmut, Badurek, Gerald, Jericha, Erwin; orcid:, FERRARI, Anthony +362 morecore +2 more sourcesMicroprobe Analyses of Rare-Earth-Element Fractionation in Meteoritic Minerals [PDF]
, 1983 Two meteorites were analyzed by PIXE with the Los Alamos nuclear microprobe. The enstatite achondrite Peña Blanca Spring and the ordinary chondrite St Severin were chosen as likely candidates for use in ^(244)Pu(t_(l/2)=82 my) cosmochronology and ...Duffy, C. J., Burnett, D. S., Maggiore, C. J., Rogers, P. S. Z., Woolum, D. S., Murrell, M. T., Benjamin, T. M. +6 morecore +1 more sourcer-Process abundance universality and actinide cosmochronology
New Astronomy, 2003 We review recent observational and theoretical results concerning the presence of actinide nuclei on the surfaces of old halo stars and their use as an age determinant. We present model calculations which show that the observed universality of abundances for 56 < Z < 75 elements in these stars does not imply a unique astrophysical site for the r ...Otsuki, Kaori, Mathews, Grant J., Kajino, Toshitaka +2 moreopenaire +2 more sources
