Reaching into the <i>N</i> = 40 Island of Inversion with Nucleon Removal Reactions
One ambitious goal of nuclear physics is a predictive model of all nuclei, including the ones at the fringes of the nuclear chart which may remain out of experimental reach. Certain regions of the chart are providing formidable testing grounds for nuclear models in this quest as they display rapid s...
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| Format: | Article |
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MDPI AG
2021-12-01
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| Series: | Physics |
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| Online Access: | https://www.mdpi.com/2624-8174/3/4/77 |
| _version_ | 1797501410049261568 |
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| author | Alexandra Gade |
| author_facet | Alexandra Gade |
| author_sort | Alexandra Gade |
| collection | DOAJ |
| description | One ambitious goal of nuclear physics is a predictive model of all nuclei, including the ones at the fringes of the nuclear chart which may remain out of experimental reach. Certain regions of the chart are providing formidable testing grounds for nuclear models in this quest as they display rapid structural evolution from one nucleus to another or phenomena such as shape coexistence. Observables measured for such nuclei can confirm or refute our understanding of the driving forces of the evolution of nuclear structure away from stability where textbook nuclear physics has been proven to not apply anymore. This paper briefly reviews the emerging picture for the very neutron-rich Fe, Cr, and Ti isotopes within the so-called <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>N</mi><mo>=</mo><mn>40</mn></mrow></semantics></math></inline-formula> island of inversion as obtained with nucleon knockout reactions. These have provided some of the most detailed nuclear spectroscopy in very neutron-rich nuclei produced at rare-isotope facilities. The results indicate that our current understanding, as encoded in large-scale shell-model calculations, appears correct with exciting predictions for the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>N</mi><mo>=</mo><mn>40</mn></mrow></semantics></math></inline-formula> island of inversion left to be proven in the experiment. A bright future emerges with predictions of continued shell evolution and shape coexistence out to neutron number <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>N</mi><mo>=</mo><mn>50</mn></mrow></semantics></math></inline-formula>, below <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mn>78</mn></msup></semantics></math></inline-formula>Ni on the chart of nuclei. |
| first_indexed | 2024-03-10T03:17:59Z |
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| institution | Directory Open Access Journal |
| issn | 2624-8174 |
| language | English |
| last_indexed | 2024-03-10T03:17:59Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Physics |
| spelling | doaj.art-e7abe2868c174e1e92ab09f63b25ead72023-11-23T10:09:48ZengMDPI AGPhysics2624-81742021-12-01341226123610.3390/physics3040077Reaching into the <i>N</i> = 40 Island of Inversion with Nucleon Removal ReactionsAlexandra Gade0FRIB Laboratory, Michigan State University, East Lansing, MI 48824, USAOne ambitious goal of nuclear physics is a predictive model of all nuclei, including the ones at the fringes of the nuclear chart which may remain out of experimental reach. Certain regions of the chart are providing formidable testing grounds for nuclear models in this quest as they display rapid structural evolution from one nucleus to another or phenomena such as shape coexistence. Observables measured for such nuclei can confirm or refute our understanding of the driving forces of the evolution of nuclear structure away from stability where textbook nuclear physics has been proven to not apply anymore. This paper briefly reviews the emerging picture for the very neutron-rich Fe, Cr, and Ti isotopes within the so-called <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>N</mi><mo>=</mo><mn>40</mn></mrow></semantics></math></inline-formula> island of inversion as obtained with nucleon knockout reactions. These have provided some of the most detailed nuclear spectroscopy in very neutron-rich nuclei produced at rare-isotope facilities. The results indicate that our current understanding, as encoded in large-scale shell-model calculations, appears correct with exciting predictions for the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>N</mi><mo>=</mo><mn>40</mn></mrow></semantics></math></inline-formula> island of inversion left to be proven in the experiment. A bright future emerges with predictions of continued shell evolution and shape coexistence out to neutron number <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>N</mi><mo>=</mo><mn>50</mn></mrow></semantics></math></inline-formula>, below <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mn>78</mn></msup></semantics></math></inline-formula>Ni on the chart of nuclei.https://www.mdpi.com/2624-8174/3/4/77rare isotopesshell evolutionN = 40 island of inversionknockout reactions |
| spellingShingle | Alexandra Gade Reaching into the <i>N</i> = 40 Island of Inversion with Nucleon Removal Reactions Physics rare isotopes shell evolution N = 40 island of inversion knockout reactions |
| title | Reaching into the <i>N</i> = 40 Island of Inversion with Nucleon Removal Reactions |
| title_full | Reaching into the <i>N</i> = 40 Island of Inversion with Nucleon Removal Reactions |
| title_fullStr | Reaching into the <i>N</i> = 40 Island of Inversion with Nucleon Removal Reactions |
| title_full_unstemmed | Reaching into the <i>N</i> = 40 Island of Inversion with Nucleon Removal Reactions |
| title_short | Reaching into the <i>N</i> = 40 Island of Inversion with Nucleon Removal Reactions |
| title_sort | reaching into the i n i 40 island of inversion with nucleon removal reactions |
| topic | rare isotopes shell evolution N = 40 island of inversion knockout reactions |
| url | https://www.mdpi.com/2624-8174/3/4/77 |
| work_keys_str_mv | AT alexandragade reachingintotheini40islandofinversionwithnucleonremovalreactions |