Zobrazeno 1 - 10
of 39
pro vyhledávání: '"S. Ghelberg"'
Autor:
M. Paul, A. Ofan, Y. Ben-Dov, H. Nassar, S. Ghelberg, Michael Hass, B. S. Nara Singh, N. Trubnikov
Publikováno v:
Nuclear Physics A. 758:411-414
We report on a study of the α -capture reaction on 40 Ca in the energy range relevant to supernova nucleosynthesis (T 9 ∼ 0.8–3). The experiment measures the overall yield of 44 Ti nuclei produced in an activation of a thick 4 He target by a 40
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8212046d67afb1ae6133f485cbc2cd5e
https://doi.org/10.1016/j.nuclphysa.2005.05.075
https://doi.org/10.1016/j.nuclphysa.2005.05.075
Autor:
R. Scott, M. Bettan, R. C. Vondrasek, N. Patronis, H. Nassar, Ralf Plag, Rene Reifarth, R. C. Pardo, T. Pennington, S. Ghelberg, M. Paul, X. D. Tang, H. Koivisto, Philippe Collon, S. O'Brien, John P. Greene, S. K. Sinha, Saed Dababneh, D. J. Henderson, Dan Berkovits, I. Ahmad, C. L. Jiang, K. E. Rehm, Michael Heil, F. Käppeler
Publikováno v:
Nuclear Physics A. 746:613-616
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::069ee24acea3d3a34cdb307d021978ee
https://doi.org/10.1016/j.nuclphysa.2004.09.140
https://doi.org/10.1016/j.nuclphysa.2004.09.140
Autor:
Oded Heber, G. Verri, Michael Hass, Y. Shahar, Dan Berkovits, Y. Ben-Dov, Michael Paul, C. Bordeanu, S. Ghelberg
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. :161-167
The AMS facility based on a 14UD Pelletron tandem accelerator has been upgraded in recent years to support an active and diversified research program. A new dedicated AMS ion source beam line merging at 45° with the existing injection line through a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ca6c7e660023f8a0c7f84c294493dfeb
https://doi.org/10.1016/j.nimb.2004.04.033
https://doi.org/10.1016/j.nimb.2004.04.033
Autor:
S. Jiang, Dan Berkovits, Michael Paul, A. Valenta, Takashi Nakanishi, Y. Hashimoto, C. Bordeanu, I. Ahmad, A. Hershkowitz, K. Sakamoto, S. Ghelberg
Publikováno v:
Nuclear Physics A. 719:C29-C36
The detection of cosmic γ radioactivity of live nuclides from supernovae remnants during the last decade has had an immense impact on our understanding of stellar nucleosynthesis. It is expected that, similarly, nuclides such as 146 Sm, 244 Pu, 182
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f9556fa04863482a27064f01b133107
https://doi.org/10.1016/s0375-9474(03)00954-0
https://doi.org/10.1016/s0375-9474(03)00954-0
Autor:
S. Jiang, Guy Savard, John P. Greene, D. J. Henderson, Michael Paul, C. Feldstein, R. C. Pardo, S.K. Hui, K. E. Rehm, I. Ahmad, C. Bordeanu, I. Wiedenhöver, Y. Nir-El, Michael Hass, R. V. F. Janssens, R. C. Vondrasek, Dan Berkovits, Michael Wiescher, G. Verri, T. Pennington, S. Ghelberg, J. Caggiano, Joachim Goerres, C. L. Jiang, A. M. Heinz
Publikováno v:
Nuclear Physics A. 718:239-242
Among the many production and destruction nuclear reactions that bear on the net 44 Ti yield in the supernova environment, recently highlighted by γ-ray astronomy observations, the α capture on 40 Ca stands out in the α-rich freezeout phase conjec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c0506d1aa18148ef7390afbd1fa43e1
https://doi.org/10.1016/s0375-9474(03)00720-6
https://doi.org/10.1016/s0375-9474(03)00720-6
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 172:372-376
We have recently extended our accelerator mass spectrometry (AMS) system to the detection of actinides for geophysical applications, taking 236 U as an interesting test case for this class of nuclides. We report on the development of the experimental
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f0146fda8e529728e20e93152017584a
https://doi.org/10.1016/s0168-583x(00)00152-x
https://doi.org/10.1016/s0168-583x(00)00152-x
Autor:
A. Hershkowitz, S. K. Hui, Michael Hass, Dan Berkovits, E. Navon, Michael Paul, Elisabetta Boaretto, S. Ghelberg
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 172:642-646
The nuclide 44 Ti (T 1/2 =59.2 yr) has recently become an important asset to nuclear astrophysics through the measurement of its cosmic radioactivity, yielding significant information on fresh 44 Ti nucleosynthesis in supernovae. We propose to use AM
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3490ea9265245c8a2282eb2f560473fc
https://doi.org/10.1016/s0168-583x(00)00101-4
https://doi.org/10.1016/s0168-583x(00)00101-4
Autor:
Y. Hashimoto, A. Valenta, A. Hershkowitz, S. Jiang, Michael Paul, Takashi Nakanishi, C. Bordeanu, K. Sakamoto, Dan Berkovits, I. Ahmad, S. Ghelberg
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 272:243-245
We report here a search for the “live” 244Pu in 1 kg deep-sea dry sediment collected in 1992 in the North Pacific. After a 546 day alpha-counting of a Pu fraction chemically separated from the alkaline-fused sediment sample at Kanazawa University
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f77f5a2c61b7b135ceebdbffca487554
https://doi.org/10.1007/s10967-007-0508-3
https://doi.org/10.1007/s10967-007-0508-3
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 123:515-520
Electron affinity and absolute photodetachment cross sections of weakly-bound negative ions are measured by combination of laser excitation and AMS techniques. The photodetachment cross section is determined by measuring the depletion of negative ion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5006c048a6f1bf235fe9b7005d0aa71c
https://doi.org/10.1016/s0168-583x(96)00678-7
https://doi.org/10.1016/s0168-583x(96)00678-7
Autor:
S. Ghelberg, Michael Paul, V. Sossi, O. Meirav, Elisabetta Boaretto, Z. Gelbart, J. Prior, E. Venczel, R.R. Johnson, Dan Berkovits
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 92:483-488
We are investigating long- and short-term processes that involve the resorption of the bone calcium in the human body, using accelerator mass spectrometry of 41Ca ( T 1 2 = 104000 years). The evolution of an injected dose of 41Ca has been followed ov
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26650e8abf8fbd877f743220800646fc
https://doi.org/10.1016/0168-583x(94)96059-3
https://doi.org/10.1016/0168-583x(94)96059-3