Tanaka, Junki ; Yang, Zaihong ; Typel, Stefan ; Adachi, Satoshi ; Bai, Shiwei ; van Beek, Patrik ; Beaumel, Didier ; Fujikawa, Yuki ; Han, Jiaxing ; Heil, Sebastian ; Huang, Siwei ; Inoue, Azusa ; Jiang, Ying ; Knösel, Marco ; Kobayashi, Nobuyuki ; Kubota, Yuki ; Liu, Wei ; Lou, Jianling ; Maeda, Yukie ; Matsuda, Yohei ; Miki, Kenjiro ; Nakamura, Shoken ; Ogata, Kazuyuki ; Panin, Valerii ; Scheit, Heiko ; Schindler, Fabia ; Schrock, Philipp ; Symochko, Dmytro ; Tamii, Atsushi ; Uesaka, Tomohiro ; Wagner, Vadim ; Yoshida, Kazuki ; Zenihiro, Juzo ; Aumann, Thomas (2021)
Formation of α clusters in dilute neutron-rich matter.
In: Science, 371 (6526)
doi: 10.1126/science.abe4688
Article, Bibliographie
Abstract
The surface of neutron-rich heavy nuclei, with a neutron skin created by excess neutrons, provides an important terrestrial model system to study dilute neutron-rich matter. By using quasi-free α cluster–knockout reactions, we obtained direct experimental evidence for the formation of α clusters at the surface of neutron-rich tin isotopes. The observed monotonous decrease of the reaction cross sections with increasing mass number, in excellent agreement with the theoretical prediction, implies a tight interplay between α-cluster formation and the neutron skin. This result, in turn, calls for a revision of the correlation between the neutron-skin thickness and the density dependence of the symmetry energy, which is essential for understanding neutron stars. Our result also provides a natural explanation for the origin of α particles in α decay.
| Item Type: | Article |
|---|---|
| Erschienen: | 2021 |
| Creators: | Tanaka, Junki ; Yang, Zaihong ; Typel, Stefan ; Adachi, Satoshi ; Bai, Shiwei ; van Beek, Patrik ; Beaumel, Didier ; Fujikawa, Yuki ; Han, Jiaxing ; Heil, Sebastian ; Huang, Siwei ; Inoue, Azusa ; Jiang, Ying ; Knösel, Marco ; Kobayashi, Nobuyuki ; Kubota, Yuki ; Liu, Wei ; Lou, Jianling ; Maeda, Yukie ; Matsuda, Yohei ; Miki, Kenjiro ; Nakamura, Shoken ; Ogata, Kazuyuki ; Panin, Valerii ; Scheit, Heiko ; Schindler, Fabia ; Schrock, Philipp ; Symochko, Dmytro ; Tamii, Atsushi ; Uesaka, Tomohiro ; Wagner, Vadim ; Yoshida, Kazuki ; Zenihiro, Juzo ; Aumann, Thomas |
| Type of entry: | Bibliographie |
| Title: | Formation of α clusters in dilute neutron-rich matter |
| Language: | English |
| Date: | 15 January 2021 |
| Publisher: | AAAS |
| Journal or Publication Title: | Science |
| Volume of the journal: | 371 |
| Issue Number: | 6526 |
| DOI: | 10.1126/science.abe4688 |
| Abstract: | The surface of neutron-rich heavy nuclei, with a neutron skin created by excess neutrons, provides an important terrestrial model system to study dilute neutron-rich matter. By using quasi-free α cluster–knockout reactions, we obtained direct experimental evidence for the formation of α clusters at the surface of neutron-rich tin isotopes. The observed monotonous decrease of the reaction cross sections with increasing mass number, in excellent agreement with the theoretical prediction, implies a tight interplay between α-cluster formation and the neutron skin. This result, in turn, calls for a revision of the correlation between the neutron-skin thickness and the density dependence of the symmetry energy, which is essential for understanding neutron stars. Our result also provides a natural explanation for the origin of α particles in α decay. |
| Divisions: | 05 Department of Physics 05 Department of Physics > Institute of Nuclear Physics 05 Department of Physics > Institute of Nuclear Physics > Experimentelle Kernphysik 05 Department of Physics > Institute of Nuclear Physics > Theoretische Kernphysik 05 Department of Physics > Institute of Nuclear Physics > Theoretische Kernphysik > Kernphysik und Nukleare Astrophysik 05 Department of Physics > Institute of Nuclear Physics > Theoretische Kernphysik > 05 Department of Physics > Institute of Nuclear Physics > Theoretische Kernphysik > Theoretical Nuclear Astrophysics Group |
| TU-Projects: | Bund/BMBF|05P19RDFN1|NuSTAR 2019 Koordina DFG|SFB1245|A05 Aumann |
| Date Deposited: | 13 Jul 2022 07:10 |
| Last Modified: | 22 Dec 2022 12:47 |
| PPN: | 503154164 |
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