Possible 'stapler' band in 109Ag nucleus
High-spin states of 109Ag have been studied using the 7Li + 110Pd reaction at a beam energy of 46 MeV. A negative-parity band decaying to the ground-state band by several new linking transitions is established. Meanwhile, seven new E2 crossover transitions of this band are observed, thereby confirmi...
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| Veröffentlicht in: | Journal of physics. G, Nuclear and particle physics Nuclear and particle physics, 2020-08, Vol.47 (8), Article 085106 |
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| container_title | Journal of physics. G, Nuclear and particle physics |
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| creator | Ma, K Y Lu, J B Li, J Yang, D Ma, Y J Sun, W J Wang, J Q Yang, Q Y Wang, H Pan, H N Zhang, D M Zhu, L H Wu, X G Zheng, Y Li, C B |
| description | High-spin states of 109Ag have been studied using the 7Li + 110Pd reaction at a beam energy of 46 MeV. A negative-parity band decaying to the ground-state band by several new linking transitions is established. Meanwhile, seven new E2 crossover transitions of this band are observed, thereby confirming the spin-parity assignment and ordering of the dipole transitions above the Iπ = 19/2− level. A low energy γ-ray transition of 88 keV is found and placed at the bottom of the negative-parity band, and thus the Iπ = 17/2− level is tentatively assigned as the lowest observed state of this band. Experimental excitation energies and total angular momenta of the negative-parity band are compared with the predictions of self-consistent titled axis cranking relativistic mean-field theory with a three-quasiparticle configuration of πg9/2−1⊗νh11/2(g7/2/d5/2)−1. Based on the theoretical description and the analyses of the angular momentum coupling, this negative-parity dipole band is suggested as a 'stapler' band. By investigating the angular momentum components, it is found that the valence nucleons in the low-j orbitals play an active role in the 'stapler' mechanism. |
| doi_str_mv | 10.1088/1361-6471/ab920c |
| format | Article |
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A negative-parity band decaying to the ground-state band by several new linking transitions is established. Meanwhile, seven new E2 crossover transitions of this band are observed, thereby confirming the spin-parity assignment and ordering of the dipole transitions above the Iπ = 19/2− level. A low energy γ-ray transition of 88 keV is found and placed at the bottom of the negative-parity band, and thus the Iπ = 17/2− level is tentatively assigned as the lowest observed state of this band. Experimental excitation energies and total angular momenta of the negative-parity band are compared with the predictions of self-consistent titled axis cranking relativistic mean-field theory with a three-quasiparticle configuration of πg9/2−1⊗νh11/2(g7/2/d5/2)−1. Based on the theoretical description and the analyses of the angular momentum coupling, this negative-parity dipole band is suggested as a 'stapler' band. By investigating the angular momentum components, it is found that the valence nucleons in the low-j orbitals play an active role in the 'stapler' mechanism.</description><identifier>ISSN: 0954-3899</identifier><identifier>EISSN: 1361-6471</identifier><identifier>DOI: 10.1088/1361-6471/ab920c</identifier><identifier>CODEN: JPGPED</identifier><language>eng</language><publisher>BRISTOL: IOP Publishing</publisher><subject>high spin state ; Physical Sciences ; Physics ; Physics, Nuclear ; Physics, Particles & Fields ; Science & Technology ; stapler mechanism ; titled axis cranking</subject><ispartof>Journal of physics. 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G, Nuclear and particle physics</title><addtitle>JPhysG</addtitle><addtitle>J PHYS G NUCL PARTIC</addtitle><addtitle>J. Phys. G: Nucl. Part. Phys</addtitle><description>High-spin states of 109Ag have been studied using the 7Li + 110Pd reaction at a beam energy of 46 MeV. A negative-parity band decaying to the ground-state band by several new linking transitions is established. Meanwhile, seven new E2 crossover transitions of this band are observed, thereby confirming the spin-parity assignment and ordering of the dipole transitions above the Iπ = 19/2− level. A low energy γ-ray transition of 88 keV is found and placed at the bottom of the negative-parity band, and thus the Iπ = 17/2− level is tentatively assigned as the lowest observed state of this band. Experimental excitation energies and total angular momenta of the negative-parity band are compared with the predictions of self-consistent titled axis cranking relativistic mean-field theory with a three-quasiparticle configuration of πg9/2−1⊗νh11/2(g7/2/d5/2)−1. Based on the theoretical description and the analyses of the angular momentum coupling, this negative-parity dipole band is suggested as a 'stapler' band. By investigating the angular momentum components, it is found that the valence nucleons in the low-j orbitals play an active role in the 'stapler' mechanism.</description><subject>high spin state</subject><subject>Physical Sciences</subject><subject>Physics</subject><subject>Physics, Nuclear</subject><subject>Physics, Particles & Fields</subject><subject>Science & Technology</subject><subject>stapler mechanism</subject><subject>titled axis cranking</subject><issn>0954-3899</issn><issn>1361-6471</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>AOWDO</sourceid><recordid>eNqNkE1Lw0AQhhdRsFbvHnORCho7k-znsQS_oKAHPS-7m03ZEpOQTRD_fVMrnjx4mmF43mHmIeQS4Q5ByiXmHFNOBS6NVRm4IzL7HR2TGShG01wqdUrOYtwCAKM5nZHr1zbGYGufLOJgutr3i8SapkxCkyCo1SZpRlf7MZ6Tk8rU0V_81Dl5f7h_K57S9cvjc7FapwFZNqSlYEZJ6SX1FZO8QiqoNwwMz5i3lllgplRU2Yw7C9Yglk54gZUolXKU5nNyc9j76W1bRRd847zu-vBh-i_9fbdCLvjUAU60_D9dhMEMoW2KdmyGKXp1iIa209t27JvpLb3RVGipQTIErruymrjbPzgEvdeu94713rE-aM93hw1wjA</recordid><startdate>20200801</startdate><enddate>20200801</enddate><creator>Ma, K Y</creator><creator>Lu, J B</creator><creator>Li, J</creator><creator>Yang, D</creator><creator>Ma, Y J</creator><creator>Sun, W J</creator><creator>Wang, J Q</creator><creator>Yang, Q Y</creator><creator>Wang, H</creator><creator>Pan, H N</creator><creator>Zhang, D M</creator><creator>Zhu, L H</creator><creator>Wu, X G</creator><creator>Zheng, Y</creator><creator>Li, C B</creator><general>IOP Publishing</general><general>IOP Publishing Ltd</general><scope>AOWDO</scope><scope>BLEPL</scope><scope>DTL</scope><orcidid>https://orcid.org/0000-0002-5651-8699</orcidid><orcidid>https://orcid.org/0000-0002-6456-3852</orcidid><orcidid>https://orcid.org/0000-0001-5249-6536</orcidid></search><sort><creationdate>20200801</creationdate><title>Possible 'stapler' band in 109Ag nucleus</title><author>Ma, K Y ; Lu, J B ; Li, J ; Yang, D ; Ma, Y J ; Sun, W J ; Wang, J Q ; Yang, Q Y ; Wang, H ; Pan, H N ; Zhang, D M ; Zhu, L H ; Wu, X G ; Zheng, Y ; Li, C B</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i152t-d75a988e84ef586f1474ea50a625ebb5b05ad949b26cb0ba11dc7e71f7d99c443</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>high spin state</topic><topic>Physical Sciences</topic><topic>Physics</topic><topic>Physics, Nuclear</topic><topic>Physics, Particles & Fields</topic><topic>Science & Technology</topic><topic>stapler mechanism</topic><topic>titled axis cranking</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ma, K Y</creatorcontrib><creatorcontrib>Lu, J B</creatorcontrib><creatorcontrib>Li, J</creatorcontrib><creatorcontrib>Yang, D</creatorcontrib><creatorcontrib>Ma, Y J</creatorcontrib><creatorcontrib>Sun, W J</creatorcontrib><creatorcontrib>Wang, J Q</creatorcontrib><creatorcontrib>Yang, Q Y</creatorcontrib><creatorcontrib>Wang, H</creatorcontrib><creatorcontrib>Pan, H N</creatorcontrib><creatorcontrib>Zhang, D M</creatorcontrib><creatorcontrib>Zhu, L H</creatorcontrib><creatorcontrib>Wu, X G</creatorcontrib><creatorcontrib>Zheng, Y</creatorcontrib><creatorcontrib>Li, C B</creatorcontrib><collection>Web of Science - Science Citation Index Expanded - 2020</collection><collection>Web of Science Core Collection</collection><collection>Science Citation Index Expanded</collection><jtitle>Journal of physics. 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A negative-parity band decaying to the ground-state band by several new linking transitions is established. Meanwhile, seven new E2 crossover transitions of this band are observed, thereby confirming the spin-parity assignment and ordering of the dipole transitions above the Iπ = 19/2− level. A low energy γ-ray transition of 88 keV is found and placed at the bottom of the negative-parity band, and thus the Iπ = 17/2− level is tentatively assigned as the lowest observed state of this band. Experimental excitation energies and total angular momenta of the negative-parity band are compared with the predictions of self-consistent titled axis cranking relativistic mean-field theory with a three-quasiparticle configuration of πg9/2−1⊗νh11/2(g7/2/d5/2)−1. Based on the theoretical description and the analyses of the angular momentum coupling, this negative-parity dipole band is suggested as a 'stapler' band. By investigating the angular momentum components, it is found that the valence nucleons in the low-j orbitals play an active role in the 'stapler' mechanism.</abstract><cop>BRISTOL</cop><pub>IOP Publishing</pub><doi>10.1088/1361-6471/ab920c</doi><tpages>13</tpages><orcidid>https://orcid.org/0000-0002-5651-8699</orcidid><orcidid>https://orcid.org/0000-0002-6456-3852</orcidid><orcidid>https://orcid.org/0000-0001-5249-6536</orcidid></addata></record> |
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| subjects | high spin state Physical Sciences Physics Physics, Nuclear Physics, Particles & Fields Science & Technology stapler mechanism titled axis cranking |
| title | Possible 'stapler' band in 109Ag nucleus |
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