Direct measurement of three different deformations near the ground state in an atomic nucleus
Abstract Atomic nuclei serve as prime laboratories for investigations of complex quantum phenomena, where minor nucleon rearrangements cause significant structural changes. 190Pb is the heaviest known neutron-deficient Pb isotope that can exhibit three distinct shapes: prolate, oblate, and spherical...
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Nature Portfolio
2025-01-01
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| Series: | Communications Physics |
| Online Access: | https://doi.org/10.1038/s42005-024-01928-8 |
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| author | Adrian Montes Plaza Janne Pakarinen Philippos Papadakis Rolf-Dietmar Herzberg Rauno Julin Tomás R. Rodríguez Andrew D. Briscoe Andrés Illana Joonas Ojala Panu Ruotsalainen Eetu Uusikylä Betool Alayed Ahmed Alharbi Odette Alonso-Sañudo Kalle Auranen Ville Bogdanoff Jamie Chadderton Arwin Esmaylzadeh Christoph Fransen Tuomas Grahn Paul T. Greenlees Jan Jolie Henna Joukainen Henri Jutila Casper-David Lakenbrink Matti Leino Jussi Louko Minna Luoma Adam McCarter Bondili Sreenivasa Nara Singh Panu Rahkila Andrea Raggio Jorge Romero Jan Sarén Maria-Magdalini Satrazani Marek Stryjczyk Conor M. Sullivan Álvaro Tolosa-Delgado Juha Uusitalo Franziskus von Spee Jessica Warbinek George L. Zimba |
| author_facet | Adrian Montes Plaza Janne Pakarinen Philippos Papadakis Rolf-Dietmar Herzberg Rauno Julin Tomás R. Rodríguez Andrew D. Briscoe Andrés Illana Joonas Ojala Panu Ruotsalainen Eetu Uusikylä Betool Alayed Ahmed Alharbi Odette Alonso-Sañudo Kalle Auranen Ville Bogdanoff Jamie Chadderton Arwin Esmaylzadeh Christoph Fransen Tuomas Grahn Paul T. Greenlees Jan Jolie Henna Joukainen Henri Jutila Casper-David Lakenbrink Matti Leino Jussi Louko Minna Luoma Adam McCarter Bondili Sreenivasa Nara Singh Panu Rahkila Andrea Raggio Jorge Romero Jan Sarén Maria-Magdalini Satrazani Marek Stryjczyk Conor M. Sullivan Álvaro Tolosa-Delgado Juha Uusitalo Franziskus von Spee Jessica Warbinek George L. Zimba |
| author_sort | Adrian Montes Plaza |
| collection | DOAJ |
| description | Abstract Atomic nuclei serve as prime laboratories for investigations of complex quantum phenomena, where minor nucleon rearrangements cause significant structural changes. 190Pb is the heaviest known neutron-deficient Pb isotope that can exhibit three distinct shapes: prolate, oblate, and spherical, with nearly degenerate excitation energies. Here we report on the combined results from three state-of-the-art measurements to directly observe these deformations in 190Pb. Contrary to earlier interpretations, we associate the collective yrast band as predominantly oblate, while the non-yrast band with higher collectivity follows characteristics of more deformed, predominantly prolate bands. Direct measurement of the $$E0({0}_{2}^{+}\to {0}_{1}^{+})$$ E 0 ( 0 2 + → 0 1 + ) transition and γ-e − coincidence relations allowed us to locate and firmly assign the $${0}_{2}^{+}$$ 0 2 + state in the level scheme and to discover a spherical $${2}_{3}^{+}$$ 2 3 + state at 1281(1) keV with $$B(E2;{2}_{3}^{+}\to {0}_{1}^{+})=1.2(3)$$ B ( E 2 ; 2 3 + → 0 1 + ) = 1.2 ( 3 ) W.u. These assignments are based purely on observed transition probabilities and monopole strength values, and do not rely on model calculations for their interpretation. |
| format | Article |
| id | doaj-art-dbb378964558486e82e5e39db5fb5e48 |
| institution | Kabale University |
| issn | 2399-3650 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
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| series | Communications Physics |
| spelling | doaj-art-dbb378964558486e82e5e39db5fb5e482025-01-05T12:32:43ZengNature PortfolioCommunications Physics2399-36502025-01-01811910.1038/s42005-024-01928-8Direct measurement of three different deformations near the ground state in an atomic nucleusAdrian Montes Plaza0Janne Pakarinen1Philippos Papadakis2Rolf-Dietmar Herzberg3Rauno Julin4Tomás R. Rodríguez5Andrew D. Briscoe6Andrés Illana7Joonas Ojala8Panu Ruotsalainen9Eetu Uusikylä10Betool Alayed11Ahmed Alharbi12Odette Alonso-Sañudo13Kalle Auranen14Ville Bogdanoff15Jamie Chadderton16Arwin Esmaylzadeh17Christoph Fransen18Tuomas Grahn19Paul T. Greenlees20Jan Jolie21Henna Joukainen22Henri Jutila23Casper-David Lakenbrink24Matti Leino25Jussi Louko26Minna Luoma27Adam McCarter28Bondili Sreenivasa Nara Singh29Panu Rahkila30Andrea Raggio31Jorge Romero32Jan Sarén33Maria-Magdalini Satrazani34Marek Stryjczyk35Conor M. Sullivan36Álvaro Tolosa-Delgado37Juha Uusitalo38Franziskus von Spee39Jessica Warbinek40George L. Zimba41Oliver Lodge Laboratory, University of LiverpoolAccelerator Laboratory, Department of Physics, University of JyväskyläNuclear Physics Group, STFC Daresbury LaboratoryOliver Lodge Laboratory, University of LiverpoolAccelerator Laboratory, Department of Physics, University of JyväskyläGrupo de Física Nuclear (GFN) and IPARCOS, Universidad Complutense de Madrid, CEI MoncloaAccelerator Laboratory, Department of Physics, University of JyväskyläAccelerator Laboratory, Department of Physics, University of JyväskyläAccelerator Laboratory, Department of Physics, University of JyväskyläAccelerator Laboratory, Department of Physics, University of JyväskyläAccelerator Laboratory, Department of Physics, University of JyväskyläOliver Lodge Laboratory, University of LiverpoolOliver Lodge Laboratory, University of LiverpoolGrupo de Física Nuclear (GFN) and IPARCOS, Universidad Complutense de Madrid, CEI MoncloaAccelerator Laboratory, Department of Physics, University of JyväskyläAccelerator Laboratory, Department of Physics, University of JyväskyläOliver Lodge Laboratory, University of LiverpoolUniversität zu Köln, Mathematisch-Naturwissenschaftliche Fakultät, Institut für KernphysikUniversität zu Köln, Mathematisch-Naturwissenschaftliche Fakultät, Institut für KernphysikAccelerator Laboratory, Department of Physics, University of JyväskyläAccelerator Laboratory, Department of Physics, University of JyväskyläUniversität zu Köln, Mathematisch-Naturwissenschaftliche Fakultät, Institut für KernphysikAccelerator Laboratory, Department of Physics, University of JyväskyläAccelerator Laboratory, Department of Physics, University of JyväskyläUniversität zu Köln, Mathematisch-Naturwissenschaftliche Fakultät, Institut für KernphysikAccelerator Laboratory, Department of Physics, University of JyväskyläAccelerator Laboratory, Department of Physics, University of JyväskyläAccelerator Laboratory, Department of Physics, University of JyväskyläOliver Lodge Laboratory, University of LiverpoolSchool of Computing, Engineering and Physical Sciences, University of the West of ScotlandAccelerator Laboratory, Department of Physics, University of JyväskyläAccelerator Laboratory, Department of Physics, University of JyväskyläOliver Lodge Laboratory, University of LiverpoolAccelerator Laboratory, Department of Physics, University of JyväskyläOliver Lodge Laboratory, University of LiverpoolAccelerator Laboratory, Department of Physics, University of JyväskyläOliver Lodge Laboratory, University of LiverpoolAccelerator Laboratory, Department of Physics, University of JyväskyläAccelerator Laboratory, Department of Physics, University of JyväskyläUniversität zu Köln, Mathematisch-Naturwissenschaftliche Fakultät, Institut für KernphysikGSI Helmholtzzentrum für SchwerionenforschungAccelerator Laboratory, Department of Physics, University of JyväskyläAbstract Atomic nuclei serve as prime laboratories for investigations of complex quantum phenomena, where minor nucleon rearrangements cause significant structural changes. 190Pb is the heaviest known neutron-deficient Pb isotope that can exhibit three distinct shapes: prolate, oblate, and spherical, with nearly degenerate excitation energies. Here we report on the combined results from three state-of-the-art measurements to directly observe these deformations in 190Pb. Contrary to earlier interpretations, we associate the collective yrast band as predominantly oblate, while the non-yrast band with higher collectivity follows characteristics of more deformed, predominantly prolate bands. Direct measurement of the $$E0({0}_{2}^{+}\to {0}_{1}^{+})$$ E 0 ( 0 2 + → 0 1 + ) transition and γ-e − coincidence relations allowed us to locate and firmly assign the $${0}_{2}^{+}$$ 0 2 + state in the level scheme and to discover a spherical $${2}_{3}^{+}$$ 2 3 + state at 1281(1) keV with $$B(E2;{2}_{3}^{+}\to {0}_{1}^{+})=1.2(3)$$ B ( E 2 ; 2 3 + → 0 1 + ) = 1.2 ( 3 ) W.u. These assignments are based purely on observed transition probabilities and monopole strength values, and do not rely on model calculations for their interpretation.https://doi.org/10.1038/s42005-024-01928-8 |
| spellingShingle | Adrian Montes Plaza Janne Pakarinen Philippos Papadakis Rolf-Dietmar Herzberg Rauno Julin Tomás R. Rodríguez Andrew D. Briscoe Andrés Illana Joonas Ojala Panu Ruotsalainen Eetu Uusikylä Betool Alayed Ahmed Alharbi Odette Alonso-Sañudo Kalle Auranen Ville Bogdanoff Jamie Chadderton Arwin Esmaylzadeh Christoph Fransen Tuomas Grahn Paul T. Greenlees Jan Jolie Henna Joukainen Henri Jutila Casper-David Lakenbrink Matti Leino Jussi Louko Minna Luoma Adam McCarter Bondili Sreenivasa Nara Singh Panu Rahkila Andrea Raggio Jorge Romero Jan Sarén Maria-Magdalini Satrazani Marek Stryjczyk Conor M. Sullivan Álvaro Tolosa-Delgado Juha Uusitalo Franziskus von Spee Jessica Warbinek George L. Zimba Direct measurement of three different deformations near the ground state in an atomic nucleus Communications Physics |
| title | Direct measurement of three different deformations near the ground state in an atomic nucleus |
| title_full | Direct measurement of three different deformations near the ground state in an atomic nucleus |
| title_fullStr | Direct measurement of three different deformations near the ground state in an atomic nucleus |
| title_full_unstemmed | Direct measurement of three different deformations near the ground state in an atomic nucleus |
| title_short | Direct measurement of three different deformations near the ground state in an atomic nucleus |
| title_sort | direct measurement of three different deformations near the ground state in an atomic nucleus |
| url | https://doi.org/10.1038/s42005-024-01928-8 |
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