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Measurement of radiative α-capture cross sections on 98Ru and 144Sm for γ-process nucleosynthesis
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| Zeitschriftentitel: | Journal of Physics: Conference Series |
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| Personen und Körperschaften: | , , , , , , , , , , , |
| In: | Journal of Physics: Conference Series, 1668, 2020, 1, S. 012036 |
| Format: | E-Article |
| Sprache: | Unbestimmt |
| veröffentlicht: |
IOP Publishing
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| author_facet |
Scholz, P. Wilsenach, H. Blazhev, A. Becker, H.-W. Heim, F. Fotinou, V. Giesen, U. Körschgen, M. Müller, M. Zell, K.O. Zilges, A. Zuber, K. Scholz, P. Wilsenach, H. Blazhev, A. Becker, H.-W. Heim, F. Fotinou, V. Giesen, U. Körschgen, M. Müller, M. Zell, K.O. Zilges, A. Zuber, K. |
|---|---|
| author |
Scholz, P. Wilsenach, H. Blazhev, A. Becker, H.-W. Heim, F. Fotinou, V. Giesen, U. Körschgen, M. Müller, M. Zell, K.O. Zilges, A. Zuber, K. |
| spellingShingle |
Scholz, P. Wilsenach, H. Blazhev, A. Becker, H.-W. Heim, F. Fotinou, V. Giesen, U. Körschgen, M. Müller, M. Zell, K.O. Zilges, A. Zuber, K. Journal of Physics: Conference Series Measurement of radiative α-capture cross sections on 98Ru and 144Sm for γ-process nucleosynthesis General Physics and Astronomy |
| author_sort |
scholz, p. |
| spelling |
Scholz, P. Wilsenach, H. Blazhev, A. Becker, H.-W. Heim, F. Fotinou, V. Giesen, U. Körschgen, M. Müller, M. Zell, K.O. Zilges, A. Zuber, K. 1742-6588 1742-6596 IOP Publishing General Physics and Astronomy http://dx.doi.org/10.1088/1742-6596/1668/1/012036 <jats:title>Abstract</jats:title> <jats:p>Since <jats:italic>p</jats:italic> isotopes cannot be produced in neutron-capture reaction networks, a production mechanism via photodisintegration reactions was proposed - the <jats:italic>γ</jats:italic> process. The specifc path of this reaction network, however, depends strongly on the statistically averaged ratios for proton-, neutron-, and <jats:italic>α</jats:italic>-decay widths.</jats:p> <jats:p>It was shown in the past, that the uncertainties in the <jats:italic>α</jats:italic>-decay widths have an impact on the isotopic abundance of the <jats:italic>γ</jats:italic>-process ashes. Besides systematic studies of the <jats:italic>α</jats:italic>+nucleus optical-model potential, direct measurements of (α, γ) reaction are needed to reduce the unpredictability of (<jats:italic>γ, α</jats:italic>) reaction rates.</jats:p> <jats:p>We present preliminary results from direct measurements of the <jats:sup>98</jats:sup>Ru(<jats:italic>α,γ</jats:italic>) and <jats:sup>144</jats:sup>Sm(<jats:italic>α,γ</jats:italic>) cross sections via in-beam measurements at the University of Cologne and the Ruhr-Universität Bochum and activation experiments at the Physikalisch-Technische Bundesanstalt in Braunschweig and the Technische Universität Dresden.</jats:p> <jats:p>The in-beam experiment might help to improve our understanding of the <jats:italic>γ</jats:italic>-process contribution to the <jats:italic>p</jats:italic> nuclei in the <jats:italic>A</jats:italic> ∼ 100 mass region, while the activation experiment is important for the determination of the initial isotopic abundance ratio of the <jats:sup>146</jats:sup>Sm/<jats:sup>144</jats:sup>Sm chronometer.</jats:p> Measurement of radiative α-capture cross sections on <sup>98</sup>Ru and <sup>144</sup>Sm for γ-process nucleosynthesis Journal of Physics: Conference Series |
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2020 |
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Journal of Physics: Conference Series |
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| title |
Measurement of radiative α-capture cross sections on 98Ru and 144Sm for γ-process nucleosynthesis |
| title_unstemmed |
Measurement of radiative α-capture cross sections on 98Ru and 144Sm for γ-process nucleosynthesis |
| title_full |
Measurement of radiative α-capture cross sections on 98Ru and 144Sm for γ-process nucleosynthesis |
| title_fullStr |
Measurement of radiative α-capture cross sections on 98Ru and 144Sm for γ-process nucleosynthesis |
| title_full_unstemmed |
Measurement of radiative α-capture cross sections on 98Ru and 144Sm for γ-process nucleosynthesis |
| title_short |
Measurement of radiative α-capture cross sections on 98Ru and 144Sm for γ-process nucleosynthesis |
| title_sort |
measurement of radiative α-capture cross sections on <sup>98</sup>ru and <sup>144</sup>sm for γ-process nucleosynthesis |
| topic |
General Physics and Astronomy |
| url |
http://dx.doi.org/10.1088/1742-6596/1668/1/012036 |
| publishDate |
2020 |
| physical |
012036 |
| description |
<jats:title>Abstract</jats:title>
<jats:p>Since <jats:italic>p</jats:italic> isotopes cannot be produced in neutron-capture reaction networks, a production mechanism via photodisintegration reactions was proposed - the <jats:italic>γ</jats:italic> process. The specifc path of this reaction network, however, depends strongly on the statistically averaged ratios for proton-, neutron-, and <jats:italic>α</jats:italic>-decay widths.</jats:p>
<jats:p>It was shown in the past, that the uncertainties in the <jats:italic>α</jats:italic>-decay widths have an impact on the isotopic abundance of the <jats:italic>γ</jats:italic>-process ashes. Besides systematic studies of the <jats:italic>α</jats:italic>+nucleus optical-model potential, direct measurements of (α, γ) reaction are needed to reduce the unpredictability of (<jats:italic>γ, α</jats:italic>) reaction rates.</jats:p>
<jats:p>We present preliminary results from direct measurements of the <jats:sup>98</jats:sup>Ru(<jats:italic>α,γ</jats:italic>) and <jats:sup>144</jats:sup>Sm(<jats:italic>α,γ</jats:italic>) cross sections via in-beam measurements at the University of Cologne and the Ruhr-Universität Bochum and activation experiments at the Physikalisch-Technische Bundesanstalt in Braunschweig and the Technische Universität Dresden.</jats:p>
<jats:p>The in-beam experiment might help to improve our understanding of the <jats:italic>γ</jats:italic>-process contribution to the <jats:italic>p</jats:italic> nuclei in the <jats:italic>A</jats:italic> ∼ 100 mass region, while the activation experiment is important for the determination of the initial isotopic abundance ratio of the <jats:sup>146</jats:sup>Sm/<jats:sup>144</jats:sup>Sm chronometer.</jats:p> |
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| author | Scholz, P., Wilsenach, H., Blazhev, A., Becker, H.-W., Heim, F., Fotinou, V., Giesen, U., Körschgen, M., Müller, M., Zell, K.O., Zilges, A., Zuber, K. |
| author_facet | Scholz, P., Wilsenach, H., Blazhev, A., Becker, H.-W., Heim, F., Fotinou, V., Giesen, U., Körschgen, M., Müller, M., Zell, K.O., Zilges, A., Zuber, K., Scholz, P., Wilsenach, H., Blazhev, A., Becker, H.-W., Heim, F., Fotinou, V., Giesen, U., Körschgen, M., Müller, M., Zell, K.O., Zilges, A., Zuber, K. |
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| description | <jats:title>Abstract</jats:title> <jats:p>Since <jats:italic>p</jats:italic> isotopes cannot be produced in neutron-capture reaction networks, a production mechanism via photodisintegration reactions was proposed - the <jats:italic>γ</jats:italic> process. The specifc path of this reaction network, however, depends strongly on the statistically averaged ratios for proton-, neutron-, and <jats:italic>α</jats:italic>-decay widths.</jats:p> <jats:p>It was shown in the past, that the uncertainties in the <jats:italic>α</jats:italic>-decay widths have an impact on the isotopic abundance of the <jats:italic>γ</jats:italic>-process ashes. Besides systematic studies of the <jats:italic>α</jats:italic>+nucleus optical-model potential, direct measurements of (α, γ) reaction are needed to reduce the unpredictability of (<jats:italic>γ, α</jats:italic>) reaction rates.</jats:p> <jats:p>We present preliminary results from direct measurements of the <jats:sup>98</jats:sup>Ru(<jats:italic>α,γ</jats:italic>) and <jats:sup>144</jats:sup>Sm(<jats:italic>α,γ</jats:italic>) cross sections via in-beam measurements at the University of Cologne and the Ruhr-Universität Bochum and activation experiments at the Physikalisch-Technische Bundesanstalt in Braunschweig and the Technische Universität Dresden.</jats:p> <jats:p>The in-beam experiment might help to improve our understanding of the <jats:italic>γ</jats:italic>-process contribution to the <jats:italic>p</jats:italic> nuclei in the <jats:italic>A</jats:italic> ∼ 100 mass region, while the activation experiment is important for the determination of the initial isotopic abundance ratio of the <jats:sup>146</jats:sup>Sm/<jats:sup>144</jats:sup>Sm chronometer.</jats:p> |
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| imprint | IOP Publishing, 2020 |
| imprint_str_mv | IOP Publishing, 2020 |
| institution | DE-105, DE-14, DE-Ch1, DE-L229, DE-D275, DE-Bn3, DE-Brt1, DE-Zwi2, DE-D161, DE-Gla1, DE-Zi4, DE-15, DE-Rs1, DE-Pl11 |
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| spelling | Scholz, P. Wilsenach, H. Blazhev, A. Becker, H.-W. Heim, F. Fotinou, V. Giesen, U. Körschgen, M. Müller, M. Zell, K.O. Zilges, A. Zuber, K. 1742-6588 1742-6596 IOP Publishing General Physics and Astronomy http://dx.doi.org/10.1088/1742-6596/1668/1/012036 <jats:title>Abstract</jats:title> <jats:p>Since <jats:italic>p</jats:italic> isotopes cannot be produced in neutron-capture reaction networks, a production mechanism via photodisintegration reactions was proposed - the <jats:italic>γ</jats:italic> process. The specifc path of this reaction network, however, depends strongly on the statistically averaged ratios for proton-, neutron-, and <jats:italic>α</jats:italic>-decay widths.</jats:p> <jats:p>It was shown in the past, that the uncertainties in the <jats:italic>α</jats:italic>-decay widths have an impact on the isotopic abundance of the <jats:italic>γ</jats:italic>-process ashes. Besides systematic studies of the <jats:italic>α</jats:italic>+nucleus optical-model potential, direct measurements of (α, γ) reaction are needed to reduce the unpredictability of (<jats:italic>γ, α</jats:italic>) reaction rates.</jats:p> <jats:p>We present preliminary results from direct measurements of the <jats:sup>98</jats:sup>Ru(<jats:italic>α,γ</jats:italic>) and <jats:sup>144</jats:sup>Sm(<jats:italic>α,γ</jats:italic>) cross sections via in-beam measurements at the University of Cologne and the Ruhr-Universität Bochum and activation experiments at the Physikalisch-Technische Bundesanstalt in Braunschweig and the Technische Universität Dresden.</jats:p> <jats:p>The in-beam experiment might help to improve our understanding of the <jats:italic>γ</jats:italic>-process contribution to the <jats:italic>p</jats:italic> nuclei in the <jats:italic>A</jats:italic> ∼ 100 mass region, while the activation experiment is important for the determination of the initial isotopic abundance ratio of the <jats:sup>146</jats:sup>Sm/<jats:sup>144</jats:sup>Sm chronometer.</jats:p> Measurement of radiative α-capture cross sections on <sup>98</sup>Ru and <sup>144</sup>Sm for γ-process nucleosynthesis Journal of Physics: Conference Series |
| spellingShingle | Scholz, P., Wilsenach, H., Blazhev, A., Becker, H.-W., Heim, F., Fotinou, V., Giesen, U., Körschgen, M., Müller, M., Zell, K.O., Zilges, A., Zuber, K., Journal of Physics: Conference Series, Measurement of radiative α-capture cross sections on 98Ru and 144Sm for γ-process nucleosynthesis, General Physics and Astronomy |
| title | Measurement of radiative α-capture cross sections on 98Ru and 144Sm for γ-process nucleosynthesis |
| title_full | Measurement of radiative α-capture cross sections on 98Ru and 144Sm for γ-process nucleosynthesis |
| title_fullStr | Measurement of radiative α-capture cross sections on 98Ru and 144Sm for γ-process nucleosynthesis |
| title_full_unstemmed | Measurement of radiative α-capture cross sections on 98Ru and 144Sm for γ-process nucleosynthesis |
| title_short | Measurement of radiative α-capture cross sections on 98Ru and 144Sm for γ-process nucleosynthesis |
| title_sort | measurement of radiative α-capture cross sections on <sup>98</sup>ru and <sup>144</sup>sm for γ-process nucleosynthesis |
| title_unstemmed | Measurement of radiative α-capture cross sections on 98Ru and 144Sm for γ-process nucleosynthesis |
| topic | General Physics and Astronomy |
| url | http://dx.doi.org/10.1088/1742-6596/1668/1/012036 |