Zobrazeno 1 - 10
of 729
pro vyhledávání: '"M. WIESCHER"'
Publikováno v:
Frontiers in Physics, Vol 10 (2022)
The typical energy range for charge particle interactions in stellar plasmas corresponds to a few 10s or 100s of keV. At these low energies, the cross sections are so vanishingly small that they cannot be measured directly with accelerator based expe
Externí odkaz:
https://doaj.org/article/4a96af181e064cd7b9a80e72a944efe7
Autor:
R. Jain, E. F. Brown, H. Schatz, A. V. Afanasjev, M. Beard, L. R. Gasques, S. S. Gupta, G. W. Hitt, W. R. Hix, R. Lau, P. Möller, W. J. Ong, M. Wiescher, Y. Xu
Publikováno v:
The Astrophysical Journal, Vol 955, Iss 1, p 51 (2023)
The observation of X-rays during quiescence from transiently accreting neutron stars provides unique clues about the nature of dense matter. This, however, requires extensive modeling of the crusts and matching the results to observations. The pycnon
Externí odkaz:
https://doaj.org/article/c2408965836b4df7a386bbb7e836fdf2
Direct measurements of low-energy resonance strengths of the 23Na(p,γ)24Mg reaction for astrophysics
Autor:
A. Boeltzig, A. Best, F.R. Pantaleo, G. Imbriani, M. Junker, M. Aliotta, J. Balibrea-Correa, D. Bemmerer, C. Broggini, C.G. Bruno, R. Buompane, A. Caciolli, F. Cavanna, T. Chillery, G.F. Ciani, P. Corvisiero, L. Csedreki, T. Davinson, R.J. deBoer, R. Depalo, A. Di Leva, Z. Elekes, F. Ferraro, E.M. Fiore, A. Formicola, Zs. Fülöp, G. Gervino, A. Guglielmetti, C. Gustavino, Gy. Gyürky, I. Kochanek, M. Lugaro, P. Marigo, R. Menegazzo, V. Mossa, F. Munnik, V. Paticchio, R. Perrino, D. Piatti, P. Prati, L. Schiavulli, K. Stöckel, O. Straniero, F. Strieder, T. Szücs, M.P. Takács, D. Trezzi, M. Wiescher, S. Zavatarelli
Publikováno v:
Physics Letters B, Vol 795, Iss , Pp 122-128 (2019)
The NeNa and the MgAl cycles play a fundamental role in the nucleosynthesis of asymptotic giant branch stars undergoing hot bottom burning. The Na23(p,γ)24Mg reaction links these two cycles and a precise determination of its rate is required to corr
Externí odkaz:
https://doaj.org/article/9da3c36e241a48d882c7a5652aa648a3
Autor:
M. L. Sergi, G. L. Guardo, M. La Cognata, M. Gulino, J. Mrazek, S. Palmerini, C. Spitaleri, M. Wiescher
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 7 (2020)
Observations of abundances and isotopic ratio determinations in stars yield powerful constraints on stellar models. In particular, the oxygen isotopic ratios are of particular interest because they are affected not only by nucleosynthesis but also by
Externí odkaz:
https://doaj.org/article/7e7aea83d8a44a5f9e46263e928e3ec0
Autor:
A. Best, F.R. Pantaleo, A. Boeltzig, G. Imbriani, M. Aliotta, J. Balibrea-Correa, D. Bemmerer, C. Broggini, C.G. Bruno, R. Buompane, A. Caciolli, F. Cavanna, T. Chillery, G.F. Ciani, P. Corvisiero, L. Csedreki, T. Davinson, R.J. deBoer, R. Depalo, A. Di Leva, Z. Elekes, F. Ferraro, E.M. Fiore, A. Formicola, Zs. Fülöp, G. Gervino, A. Guglielmetti, C. Gustavino, Gy. Gyürky, M. Junker, I. Kochanek, M. Lugaro, P. Marigo, R. Menegazzo, V. Mossa, V. Paticchio, R. Perrino, D. Piatti, P. Prati, L. Schiavulli, K. Stöckel, O. Straniero, F. Strieder, T. Szücs, M.P. Takács, D. Trezzi, M. Wiescher, S. Zavatarelli
Publikováno v:
Physics Letters B, Vol 797, Iss , Pp - (2019)
The observation of oxygen isotopes in giant stars sheds light on mixing processes operating in their interiors. Due to the very strong correlation between nuclear burning and mixing processes it is very important to reduce the uncertainty on the cros
Externí odkaz:
https://doaj.org/article/7d5d31494f6f44909cbf74e3447c53ef
Autor:
J. Marganiec, F. Wamers, F. Aksouh, Yu. Aksyutina, H. Álvarez-Pol, T. Aumann, S. Beceiro-Novo, C.A. Bertulani, K. Boretzky, M.J.G. Borge, M. Chartier, A. Chatillon, L.V. Chulkov, D. Cortina-Gil, H. Emling, O. Ershova, L.M. Fraile, H.O.U. Fynbo, D. Galaviz, H. Geissel, M. Heil, D.H.H. Hoffmann, J. Hoffmann, H.T. Johansson, B. Jonson, C. Karagiannis, O.A. Kiselev, J.V. Kratz, R. Kulessa, N. Kurz, C. Langer, M. Lantz, T. Le Bleis, R. Lemmon, Yu.A. Litvinov, K. Mahata, C. Müntz, T. Nilsson, C. Nociforo, G. Nyman, W. Ott, V. Panin, S. Paschalis, A. Perea, R. Plag, R. Reifarth, A. Richter, C. Rodriguez-Tajes, D. Rossi, K. Riisager, D. Savran, G. Schrieder, H. Simon, J. Stroth, K. Sümmerer, O. Tengblad, S. Typel, H. Weick, M. Wiescher, C. Wimmer
Publikováno v:
Physics Letters B, Vol 759, Iss C, Pp 200-205 (2016)
New experimental data for dissociation of relativistic 17Ne projectiles incident on targets of lead, carbon, and polyethylene targets at GSI are presented. Special attention is paid to the excitation and decay of narrow resonant states in 17Ne. Distr
Externí odkaz:
https://doaj.org/article/80e00ebbfb654940ba5ff6b702ad45ce
Autor:
M. Del Santo, Z. Meisel, D. Bazin, A. Becerril, B.A. Brown, H. Crawford, R. Cyburt, S. George, G.F. Grinyer, G. Lorusso, P.F. Mantica, F. Montes, J. Pereira, H. Schatz, K. Smith, M. Wiescher
Publikováno v:
Physics Letters B, Vol 738, Iss , Pp 453-456 (2014)
The slow β-decay of the 68Se waiting point in the astrophysical rp-process can in principle be bypassed by a sequential two proton capture. The rate of this reaction sequence depends exponentially on the 69Br proton separation energy. We studied β-
Externí odkaz:
https://doaj.org/article/075a039378954ec3b71fa15ec71b88c4
Autor:
A. Lemut, M. Couder, D. Winklehner, U. Greife, A. Hodgkinson, D. Leitner, M. Leitner, J. S. Saba, P. A. Vetter, W. L. Waldron, M. Wiescher
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 14, Iss 10, p 100101 (2011)
Thermonuclear reaction cross sections of astrophysical interest decrease exponentially with energy, approaching the level of femtobarn or less at the Gamow window. Experimental investigations of such small reaction rates in laboratories at the earth
Externí odkaz:
https://doaj.org/article/6dc41eec23774618a8fb0ef2881b4260
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Akademický článek
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