Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Rudolf Siemssen"'
Autor:
K. E. Rehm, L. Jisonna, D. J. Henderson, R. V. F. Janssens, John P. Greene, R. C. Pardo, E. F. Moore, X. D. Tang, A. H. Wuosmaa, J. P. Schiffer, Gaurab Mukherjee, C. L. Jiang, T. Pennington, S. K. Sinha, R. E. Segel, Rudolf Siemssen
Publikováno v:
Nuclear Physics A, 746, 354-358. ELSEVIER SCIENCE BV
The (8)B(alpha,p)(11)C reaction is part of the network that can bypass the triple a process leading to the production of (12)C. We have measured the astrophysical reaction rate for this reaction by studying the inverse (11)C(p,alpha)(8)B process. The
Autor:
M. Paul, J. P. Schiffer, J. W. Truran, J. Caggiano, G. McMichael, Iftikhar Ahmad, D. L. Bowers, Jerry Nolen, F. Brumwell, Juha Uusitalo, F. Borasi, B. Harss, John P. Greene, R. C. Pardo, R. E. Segel, C. L. Jiang, I. Wiedenhöver, D. Seweryniak, Bruce J. Zabransky, A. A. Sonzogni, Andreas Martin Heinz, K. E. Rehm, R. V. F. Janssens, D. J. Henderson, Rudolf Siemssen, C. N. Davids
Publikováno v:
Physical Review Letters. 84:1651-1654
Cross sections for the 44Ti(alpha,p)47V reaction which significantly affects the yield of 44Ti in supernovae were measured in the energy range 5.7 MeV
Autor:
H. Delagrange, S. Hlavac, M. Hoefman, R. W. Novotny, Y. Charbonnier, R. Turrisi, J. Weiss, V. Metag, Rudolf Siemssen, P.H. Vogt, R.S. Simon, R. Holzmann, V. D. Toneev, L. Aphecetche, A. Kugler, Ralf Peter Averbeck, Matthias Wolf, Yves Roland Schutz, H. Ströher, German Martinez, A. Döppenschmidt, K.K. Gudima, P. Tlustý, Hans Wilschut, A. Wolf, Ana Maria Marin, Herbert Löhner, R. Stratmann, F. Wissmann, R.W. Ostendorf, Marek Ploszajczak, M. Appenheimer, J. S. Díaz, V. Wagner, T. Matulewicz, Frederic Lefevre, van Marc-Jan Goethem
Publikováno v:
Physical Review Letters. 83:1538-1541
We report on a measurement of subthreshold eta and pi(0) mesons in the reaction Ar + Ca at 180A MeV. We find that the ratio of the eta to pi(0) meson-production cross section is more than a factor of 20 smaller than the one expected from threshold-en
Autor:
I. Wiedenhöver, John P. Greene, P. D. Parker, J. C. Blackmon, F. Borasi, A. A. Sonzogni, R. E. Segel, Juha Uusitalo, K. E. Rehm, A. Chen, M. Paul, R. C. Pardo, T. F. Wang, Jerry Nolen, Rudolf Siemssen, C. L. Jiang, B. Harss, D. J. Henderson, Michael Scott Smith, R. V. F. Janssens, J. P. Schiffer
Publikováno v:
Physical Review Letters. 82:3964-3967
A method has been developed that can provide beams of many short-lived nuclei of interest in nucleosynthesis along the rp process path. With a {sup 17}F beam (T{sub 1/2}=64 s ) the excitation function of the {sup 17}F( p,thinsp{alpha}){sup 14} O reac
Autor:
H. Rossner, B. Gebauer, M. Josset, G. Röschert, B. Lott, D. Guerreau, L. Pienkowski, J. Galin, B. M. Quednau, A. Péghaire, C. Stephan, B. Gatty, D. Jacquet, H. G. Bohlen, Rudolf Siemssen, M. Morjean, S. Leray, H. Fuchs, Joseph Cugnon, U. Jahnke, D. Hilscher, X. Ledoux
Publikováno v:
Physical Review C. 57:2375-2392
The formation and decay of hot nuclei generated in the interaction of light projectiles (475 MeV and 2 GeV protons and 2 GeV He-3) on a series of targets (Ag-107, Au-197, Bi-209, and U-238) are studied with an apparatus combining the efficient detect
Autor:
Frederic Lefevre, V. Metag, T. Matulewicz, Yves Roland Schutz, A. Kugler, R.S. Simon, Ralf Peter Averbeck, A. Döppenschmidt, F. Wissmann, R. Pleskac, R. W. Novotny, A.R. Wolf, P.H. Vogt, P. Tlustý, Y. Charbonnier, Hans Wilschut, H. Ströher, R.W. Ostendorf, German Martinez, J. Weiss, H. Delagrange, Ana Maria Marin, S. Hlavac, V. Hejny, R. Holzmann, Herbert Löhner, Rudolf Siemssen, M. Appenheimer, Matthias Wolf, V. Wagner, J. S. Díaz
Publikováno v:
Physical Review C. 56:R2920-R2923
The Dalitz-decay contributions of pi(0) and eta mesons to the di-electron invariant-mass spectrum at 1A GeV have been obtained from a systematics of inclusive meson production cross sections measured for the collision systems C-12 + C-nat and Ar-40,
Autor:
R. E. Segel, M.A. de Huu, A. H. Wuosmaa, M.D. Hunyadi, A.M. van den Berg, Peter Dendooven, Barry Davids, F. Fleurot, Rudolf Siemssen, H.W. Wilschut, H.J. Wörtche, K. E. Rehm
Publikováno v:
Nuclear Physics A. 718:605-607
The 15O(α, γ)19Ne reaction is one of two routes for breakout from the hot CNO cycles into the rp process in accreting neutron stars. Its astrophysical rate depends critically on the decay properties of excited states in 19Ne lying just above the 15
Autor:
S Slegt, S. Garpman, H. A. Gustafsson, A. Eklund, J. M. Rubio, Als Angelis, Anders Nils Erik Oskarsson, J. Idh, G. Claesson, L. Rosselet, H. Naef, K. Söderström, [No Value] Otterlund, [No Value] Lund, Joakim Nystrand, Evert Anders Stenlund, E Durieux, E Perrin, Herbert Löhner, MV Manzano Martin, P. Donni, N. Solomey, A Ster, M Izycki, Rudolf Siemssen
Publikováno v:
Nuclear Physics A. 566:605-610
Autor:
Cl Lima, A. Foti, Gerard Auger, A. Cunsolo, L. Bianchi, R Beunard, E. Plagnol, Rl Filho, Alinka Lepine-Szily, Jm Casandjian, W. Mittig, Rudolf Siemssen, A.C.C. Villari, Yves Roland Schutz, Jp Wieleczko, Jl Ciffre, L. Gaudard
Publikováno v:
Physical Review Letters. 71:2551-2554
In a high precision experiment, Mott scattering of the [sup 208]Pb+[sup 108]Pb system was measured at [ital E][sub lab]=873.40 MeV and 1129.74 MeV with kinematic coincidences for angle pairs around [theta][sub lab]=30[degree], 60[degree] and [theta][
Autor:
J. Wilczyński, H.K.W. Leegte, A Panasiewicz, K. Siwek-Wilczyńska, A. Wieloch, Rudolf Siemssen, K. Grotowski, H. W. Wilschut, Zbigniew Sosin
Publikováno v:
Physical Review C, 48(1), 228-235. AMER PHYSICAL SOC
Emission of [alpha] particles accompanying fusion-fission processes in the [sup 40]Ar +[sup 232]Th reaction at [ital E]([sup 40]Ar) = 365 MeV was studied in a wide range of in-fission-plane and out-of-plane angles. The exact determination of the emis