Suppressed Electric Quadrupole Collectivity in $^{49}$Ti
Single-step Coulomb excitation of $^{46,48,49,50}$Ti is presented. A complete set of $E2$ matrix elements for the quintuplet of states in $^{49}$Ti, centered on the $2^+$ core excitation, was measured for the first time. A total of nine $E2$ matrix elements are reported, four of which were previousl...
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| creator | Gray, T. J Allmond, J. M Benetti, C Wibisono, C Baby, L Gargano, A Miyagi, T Macchiavelli, A. O Stuchbery, A. E Wood, J. L Ajayi, S Aragon, J Asher, B. W Barber, P Bhattacharya, S Boisseau, R Christie, J. M Conley, A. L De Rosa, P Dowling, D. T Esparza, C Gibbons, J Hanselman, K Holt, J. D Lopez-Caceres, S Saavedra, E. Lopez McCann, G. W Morelock, A Kelly, B King, T. T Rasco, B. C Sitaraman, V Tabor, S. L Temanson, E Tripathi, V Wiedenhöver, I Yadav, R. B |
| description | Single-step Coulomb excitation of $^{46,48,49,50}$Ti is presented. A complete
set of $E2$ matrix elements for the quintuplet of states in $^{49}$Ti, centered
on the $2^+$ core excitation, was measured for the first time. A total of nine
$E2$ matrix elements are reported, four of which were previously unknown.
$^{49}_{22}$Ti$_{27}$ shows a $20\%$ quenching in electric quadrupole
transition strength as compared to its semi-magic $^{50}_{22}$Ti$_{28}$
neighbour. This $20\%$ quenching, while empirically unprecedented, can be
explained with a remarkably simple two-state mixing model, which is also
consistent with other ground-state properties such as the magnetic dipole
moment and electric quadrupole moment. A connection to nucleon transfer data
and the quenching of single-particle strength is also demonstrated. The
simplicity of the $^{49}$Ti-$^{50}$Ti pair (i.e., approximate single-$j$
$0f_{7/2}$ valence space and isolation of yrast states from non-yrast states)
provides a unique opportunity to disentangle otherwise competing effects in the
ground-state properties of atomic nuclei, the emergence of collectivity, and
the role of proton-neutron interactions. |
| doi_str_mv | 10.48550/arxiv.2407.03503 |
| format | Article |
| fullrecord | <record><control><sourceid>arxiv_GOX</sourceid><recordid>TN_cdi_arxiv_primary_2407_03503</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2407_03503</sourcerecordid><originalsourceid>FETCH-arxiv_primary_2407_035033</originalsourceid><addsrcrecordid>eNpjYJA0NNAzsTA1NdBPLKrILNMzMjEw1zMwNjUw5mSwCC4tKChKLS5OTVFwzUlNLinKTFYILE1MKSotyM9JVXDOzwGJZpZlllQqZOYpqMRVm1jWqoRk8jCwpiXmFKfyQmluBnk31xBnD12wHfEFRZm5iUWV8SC74sF2GRNWAQAIejNp</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Suppressed Electric Quadrupole Collectivity in $^{49}$Ti</title><source>arXiv.org</source><creator>Gray, T. J ; Allmond, J. M ; Benetti, C ; Wibisono, C ; Baby, L ; Gargano, A ; Miyagi, T ; Macchiavelli, A. O ; Stuchbery, A. E ; Wood, J. L ; Ajayi, S ; Aragon, J ; Asher, B. W ; Barber, P ; Bhattacharya, S ; Boisseau, R ; Christie, J. M ; Conley, A. L ; De Rosa, P ; Dowling, D. T ; Esparza, C ; Gibbons, J ; Hanselman, K ; Holt, J. D ; Lopez-Caceres, S ; Saavedra, E. Lopez ; McCann, G. W ; Morelock, A ; Kelly, B ; King, T. T ; Rasco, B. C ; Sitaraman, V ; Tabor, S. L ; Temanson, E ; Tripathi, V ; Wiedenhöver, I ; Yadav, R. B</creator><creatorcontrib>Gray, T. J ; Allmond, J. M ; Benetti, C ; Wibisono, C ; Baby, L ; Gargano, A ; Miyagi, T ; Macchiavelli, A. O ; Stuchbery, A. E ; Wood, J. L ; Ajayi, S ; Aragon, J ; Asher, B. W ; Barber, P ; Bhattacharya, S ; Boisseau, R ; Christie, J. M ; Conley, A. L ; De Rosa, P ; Dowling, D. T ; Esparza, C ; Gibbons, J ; Hanselman, K ; Holt, J. D ; Lopez-Caceres, S ; Saavedra, E. Lopez ; McCann, G. W ; Morelock, A ; Kelly, B ; King, T. T ; Rasco, B. C ; Sitaraman, V ; Tabor, S. L ; Temanson, E ; Tripathi, V ; Wiedenhöver, I ; Yadav, R. B</creatorcontrib><description>Single-step Coulomb excitation of $^{46,48,49,50}$Ti is presented. A complete
set of $E2$ matrix elements for the quintuplet of states in $^{49}$Ti, centered
on the $2^+$ core excitation, was measured for the first time. A total of nine
$E2$ matrix elements are reported, four of which were previously unknown.
$^{49}_{22}$Ti$_{27}$ shows a $20\%$ quenching in electric quadrupole
transition strength as compared to its semi-magic $^{50}_{22}$Ti$_{28}$
neighbour. This $20\%$ quenching, while empirically unprecedented, can be
explained with a remarkably simple two-state mixing model, which is also
consistent with other ground-state properties such as the magnetic dipole
moment and electric quadrupole moment. A connection to nucleon transfer data
and the quenching of single-particle strength is also demonstrated. The
simplicity of the $^{49}$Ti-$^{50}$Ti pair (i.e., approximate single-$j$
$0f_{7/2}$ valence space and isolation of yrast states from non-yrast states)
provides a unique opportunity to disentangle otherwise competing effects in the
ground-state properties of atomic nuclei, the emergence of collectivity, and
the role of proton-neutron interactions.</description><identifier>DOI: 10.48550/arxiv.2407.03503</identifier><language>eng</language><subject>Physics - Nuclear Experiment ; Physics - Nuclear Theory</subject><creationdate>2024-07</creationdate><rights>http://creativecommons.org/licenses/by-nc-nd/4.0</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>228,230,780,885</link.rule.ids><linktorsrc>$$Uhttps://arxiv.org/abs/2407.03503$$EView_record_in_Cornell_University$$FView_record_in_$$GCornell_University$$Hfree_for_read</linktorsrc><backlink>$$Uhttps://doi.org/10.48550/arXiv.2407.03503$$DView paper in arXiv$$Hfree_for_read</backlink></links><search><creatorcontrib>Gray, T. J</creatorcontrib><creatorcontrib>Allmond, J. M</creatorcontrib><creatorcontrib>Benetti, C</creatorcontrib><creatorcontrib>Wibisono, C</creatorcontrib><creatorcontrib>Baby, L</creatorcontrib><creatorcontrib>Gargano, A</creatorcontrib><creatorcontrib>Miyagi, T</creatorcontrib><creatorcontrib>Macchiavelli, A. O</creatorcontrib><creatorcontrib>Stuchbery, A. E</creatorcontrib><creatorcontrib>Wood, J. L</creatorcontrib><creatorcontrib>Ajayi, S</creatorcontrib><creatorcontrib>Aragon, J</creatorcontrib><creatorcontrib>Asher, B. W</creatorcontrib><creatorcontrib>Barber, P</creatorcontrib><creatorcontrib>Bhattacharya, S</creatorcontrib><creatorcontrib>Boisseau, R</creatorcontrib><creatorcontrib>Christie, J. M</creatorcontrib><creatorcontrib>Conley, A. L</creatorcontrib><creatorcontrib>De Rosa, P</creatorcontrib><creatorcontrib>Dowling, D. T</creatorcontrib><creatorcontrib>Esparza, C</creatorcontrib><creatorcontrib>Gibbons, J</creatorcontrib><creatorcontrib>Hanselman, K</creatorcontrib><creatorcontrib>Holt, J. D</creatorcontrib><creatorcontrib>Lopez-Caceres, S</creatorcontrib><creatorcontrib>Saavedra, E. Lopez</creatorcontrib><creatorcontrib>McCann, G. W</creatorcontrib><creatorcontrib>Morelock, A</creatorcontrib><creatorcontrib>Kelly, B</creatorcontrib><creatorcontrib>King, T. T</creatorcontrib><creatorcontrib>Rasco, B. C</creatorcontrib><creatorcontrib>Sitaraman, V</creatorcontrib><creatorcontrib>Tabor, S. L</creatorcontrib><creatorcontrib>Temanson, E</creatorcontrib><creatorcontrib>Tripathi, V</creatorcontrib><creatorcontrib>Wiedenhöver, I</creatorcontrib><creatorcontrib>Yadav, R. B</creatorcontrib><title>Suppressed Electric Quadrupole Collectivity in $^{49}$Ti</title><description>Single-step Coulomb excitation of $^{46,48,49,50}$Ti is presented. A complete
set of $E2$ matrix elements for the quintuplet of states in $^{49}$Ti, centered
on the $2^+$ core excitation, was measured for the first time. A total of nine
$E2$ matrix elements are reported, four of which were previously unknown.
$^{49}_{22}$Ti$_{27}$ shows a $20\%$ quenching in electric quadrupole
transition strength as compared to its semi-magic $^{50}_{22}$Ti$_{28}$
neighbour. This $20\%$ quenching, while empirically unprecedented, can be
explained with a remarkably simple two-state mixing model, which is also
consistent with other ground-state properties such as the magnetic dipole
moment and electric quadrupole moment. A connection to nucleon transfer data
and the quenching of single-particle strength is also demonstrated. The
simplicity of the $^{49}$Ti-$^{50}$Ti pair (i.e., approximate single-$j$
$0f_{7/2}$ valence space and isolation of yrast states from non-yrast states)
provides a unique opportunity to disentangle otherwise competing effects in the
ground-state properties of atomic nuclei, the emergence of collectivity, and
the role of proton-neutron interactions.</description><subject>Physics - Nuclear Experiment</subject><subject>Physics - Nuclear Theory</subject><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><sourceid>GOX</sourceid><recordid>eNpjYJA0NNAzsTA1NdBPLKrILNMzMjEw1zMwNjUw5mSwCC4tKChKLS5OTVFwzUlNLinKTFYILE1MKSotyM9JVXDOzwGJZpZlllQqZOYpqMRVm1jWqoRk8jCwpiXmFKfyQmluBnk31xBnD12wHfEFRZm5iUWV8SC74sF2GRNWAQAIejNp</recordid><startdate>20240703</startdate><enddate>20240703</enddate><creator>Gray, T. J</creator><creator>Allmond, J. M</creator><creator>Benetti, C</creator><creator>Wibisono, C</creator><creator>Baby, L</creator><creator>Gargano, A</creator><creator>Miyagi, T</creator><creator>Macchiavelli, A. O</creator><creator>Stuchbery, A. E</creator><creator>Wood, J. L</creator><creator>Ajayi, S</creator><creator>Aragon, J</creator><creator>Asher, B. 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L</au><au>Ajayi, S</au><au>Aragon, J</au><au>Asher, B. W</au><au>Barber, P</au><au>Bhattacharya, S</au><au>Boisseau, R</au><au>Christie, J. M</au><au>Conley, A. L</au><au>De Rosa, P</au><au>Dowling, D. T</au><au>Esparza, C</au><au>Gibbons, J</au><au>Hanselman, K</au><au>Holt, J. D</au><au>Lopez-Caceres, S</au><au>Saavedra, E. Lopez</au><au>McCann, G. W</au><au>Morelock, A</au><au>Kelly, B</au><au>King, T. T</au><au>Rasco, B. C</au><au>Sitaraman, V</au><au>Tabor, S. L</au><au>Temanson, E</au><au>Tripathi, V</au><au>Wiedenhöver, I</au><au>Yadav, R. B</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Suppressed Electric Quadrupole Collectivity in $^{49}$Ti</atitle><date>2024-07-03</date><risdate>2024</risdate><abstract>Single-step Coulomb excitation of $^{46,48,49,50}$Ti is presented. A complete
set of $E2$ matrix elements for the quintuplet of states in $^{49}$Ti, centered
on the $2^+$ core excitation, was measured for the first time. A total of nine
$E2$ matrix elements are reported, four of which were previously unknown.
$^{49}_{22}$Ti$_{27}$ shows a $20\%$ quenching in electric quadrupole
transition strength as compared to its semi-magic $^{50}_{22}$Ti$_{28}$
neighbour. This $20\%$ quenching, while empirically unprecedented, can be
explained with a remarkably simple two-state mixing model, which is also
consistent with other ground-state properties such as the magnetic dipole
moment and electric quadrupole moment. A connection to nucleon transfer data
and the quenching of single-particle strength is also demonstrated. The
simplicity of the $^{49}$Ti-$^{50}$Ti pair (i.e., approximate single-$j$
$0f_{7/2}$ valence space and isolation of yrast states from non-yrast states)
provides a unique opportunity to disentangle otherwise competing effects in the
ground-state properties of atomic nuclei, the emergence of collectivity, and
the role of proton-neutron interactions.</abstract><doi>10.48550/arxiv.2407.03503</doi><oa>free_for_read</oa></addata></record> |
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| title | Suppressed Electric Quadrupole Collectivity in $^{49}$Ti |
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