Zobrazeno 1 - 10
of 357
pro vyhledávání: '"Ottewell D."'
Autor:
Taggart, M. P., Akers, C., Laird, A. M., Hager, U., Ruiz, C., Hutcheon, D. A., Bentley, M. A., Brown, J. R., Buchmann, L., Chen, A. A., Chen, J., Chipps, K. A., Choplin, A., D'Auria, J. M., Davids, B., Davis, C., Diget, C. Aa., Erikson, L., Fallis, J., Fox, S. P., Frischknecht, U., Fulton, B. R., Galinski, N., Greife, U., Hirschi, R., Howell, D., Martin, L., Mountford, D., Murphy, A. St. J., Ottewell, D., Pignatari, M., Reeve, S., Ruprecht, G., Sjue, S., Veloce, L., Williams, M.
Publikováno v:
Physics Letters B 798 (2019) 134894
During the slow neutron capture process in massive stars, reactions on light elements can both produce and absorb neutrons thereby influencing the final heavy element abundances. At low metallicities, the high neutron capture rate of 16-O can inhibit
Externí odkaz:
http://arxiv.org/abs/1910.00870
Autor:
Hutcheon D.A., Ruiz C., Beck C., Fallis J., Jenkins D.G., Lebhertz D., Haas F., Courtin S., Goasduff A., Amandruz P.-A., Davis C., Hager U., Ottewell D., Ruprecht G.
Publikováno v:
EPJ Web of Conferences, Vol 17, p 06002 (2011)
We have performed a heavy ion radiative capture reaction between two light heavy ions, 12C and 16O, leading to 28Si. The present experiment has been performed below Coulomb barrier energies in order to reduce the phase space and to try to shed light
Externí odkaz:
https://doaj.org/article/8f7056f999ae4f738cddf96ad3a02015
Autor:
Fallis, J., Parikh, A., Bertone, P. F., Bishop, S., Buchmann, L., Chen, A. A., Christian, G., Clark, J. A., D'Auria, J. M., Davids, B., Deibel, C. M., Fulton, B. R., Greife, U., Guo, B., Hager, U., Herlitzius, C., Hutcheon, D. A., José, J., Laird, A. M., Li, E. T., Li, Z. H., Lian, G., Liu, W. P., Martin, L., Nelson, K., Ottewell, D., Parker, P. D., Reeve, S., Rojas, A., Ruiz, C., Setoodehnia, K., Sjue, S., Vockenhuber, C., Wang, Y. B., Wrede, C.
The 33S(p,\gamma)34Cl reaction is important for constraining predictions of certain isotopic abundances in oxygen-neon novae. Models currently predict as much as 150 times the solar abundance of 33S in oxygen-neon nova ejecta. This overproduction fac
Externí odkaz:
http://arxiv.org/abs/1309.3543
Autor:
Vinodkumar, A. M., Loveland, W., Yanez, R., Leonard, M., Yao, L., Bricault, P., Dombsky, M., Kunz, P., Lassen, J., Morton, A. C., Ottewell, D., Preddy, D., Trinczek, M.
Background: 11Li is one of the most studied halo nuclei. The fusion of 11Li with 208Pb has been the subject of a number of theoretical studies with widely differing predictions, ranging over four orders of magnitude, for the fusion excitation functio
Externí odkaz:
http://arxiv.org/abs/1208.5706
Autor:
Goasduff, A., Courtin, S., Haas, F., Lebhertz, D., Jenkins, D. G., Beck, C., Fallis, J., Ruiz, C., Hutcheon, D. A., Amandruz, P. -A., Davis, C., Hager, U., Ottewell, D., Ruprecht, G.
We have performed a heavy ion radiative capture reaction between two light heavy ions, $^{12}$C and $^{16}$O, leading to $^{28}$Si. The present experiment has been performed below Coulomb barrier energies in order to reduce the phase space and to try
Externí odkaz:
http://arxiv.org/abs/1107.1124
Autor:
Sallaska, A. L., Wrede, C., Garcia, A., Storm, D. W., Brown, T. A. D., Ruiz, C., Snover, K. A., Ottewell, D. F., Buchmann, L., Vockenhuber, C., Hutcheon, D. A., Caggiano, J. A., Jose, J.
Publikováno v:
Phys.Rev.C83:034611,2011
Gamma-ray telescopes in orbit around the Earth are searching for evidence of the elusive radionuclide 22Na produced in novae. Previously published uncertainties in the dominant destructive reaction, 22Na(p,g)23Mg, indicated new measurements in the pr
Externí odkaz:
http://arxiv.org/abs/1009.3925
Autor:
Sallaska, A. L., Wrede, C., Garcia, A., Storm, D. W., Brown, T. A. D., Ruiz, C., Snover, K. A., Ottewell, D. F., Buchmann, L., Vockenhuber, C., Hutcheon, D. A., Caggiano, J. A.
Publikováno v:
Phys.Rev.Lett.105:152501,2010; Erratum-ibid.105:209901,2010
The radionuclide 22Na is a potential astronomical observable that is expected to be produced in classical novae in quantities that depend on the thermonuclear rate of the 22Na(p,g)23Mg reaction. We have measured the strengths of low-energy 22Na(p,g)2
Externí odkaz:
http://arxiv.org/abs/1008.4170
Autor:
Denz, H., Amaudruz, P., Brack, J. T., Breitschopf, J., Camerini, P., Clark, J. L., Clement, H., Felawka, L., Fragiacomo, E., Gibson, E. F., Grion, N., Hofman, G. J., Jamieson, B., Mathie, E. L., Meier, R., Moloney, G., Ottewell, D., Patarakin, O., Patterson, J. D., Pavan, M. M., Piano, S., Raywood, K., Ristinen, R. A., Rui, R., Sevior, M. E., Smith, G. R., Stahov, J., Tacik, R., Wagner, G. J., von Wrochem, F., Yeomans, D. M.
Publikováno v:
Phys.Lett.B633:209-213,2006
Differential cross sections for pi- p and pi+ p elastic scattering were measured at five energies between 19.9 and 43.3 MeV. The use of the CHAOS magnetic spectrometer at TRIUMF, supplemented by a range telescope for muon background suppression, prov
Externí odkaz:
http://arxiv.org/abs/nucl-ex/0512006
Autor:
Camerini, P., Fragiacomo, E., Grion, N., Piano, S., Rui, R., Clark, J., Felawka, L., Gibson, E. F., Hofman, G., Mathie, E. L., Meier, R., Moloney, G., Ottewell, D., Raywood, K., Sevior, M. E., Smith, G. R., Tacik, R.
Publikováno v:
Nucl.Phys. A735 (2004) 89-110
The pion production reaction $\pi^+ \to \pi^+\pi^{\pm}$ on $^{45}Sc$ was studied at incident pion energies of $T_{\pi^{+}}$ = 240, 260, 280, 300, and 320 MeV. The experiment was performed using the $M11$ pion-channel at TRIUMF, and multiparticle even
Externí odkaz:
http://arxiv.org/abs/nucl-ex/0401018
Autor:
Bishop, S., Azuma, R. E., Buchmann, L., Chen, A. A., Chatterjee, M. L., D'Auria, J. M., Engel, S., Gigliotti, D., Greife, U., Hernanz, M., Hunter, D., Hussein, A., Hutcheon, D., Jewett, C., Jose, J., King, J., Kubono, S., Laird, A. M., Lamey, M., Lewis, R., Liu, W., Michimasa, S., Olin, A., Ottewell, D., Parker, P. D., Rogers, J. G., Strieder, F., Wrede, C.
Publikováno v:
Phys.Rev.Lett.90:162501,2003; Erratum-ibid.90:229902,2003
The 21Na(p,gamma)22Mg reaction is expected to play an important role in the nucleosynthesis of 22Na in Oxygen-Neon novae. The decay of 22Na leads to the emission of a characteristic 1.275 MeV gamma-ray line. This report provides the first direct meas
Externí odkaz:
http://arxiv.org/abs/astro-ph/0303285