Decay of a microsecond seniority 3 isomeric state in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Hf</mml:mi><mml:mprescripts/><mml:none/><mml:mn>155</mml:mn></mml:mmultiscripts></mml:math>

Excited states in the neutron-deficient nuclide <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mmultiscripts><a:mi>Hf</a:mi><a:mprescripts/><a:none/><a:mn>155</a:mn></a:mmultiscripts></a:math> have been investigated in experiments performed at the Accelerator Laboratory of the University of Jyväskylä. The <b:math xmlns:b="http://www.w3.org/1998/Math/MathML"><b:mmultiscripts><b:mi>Hf</b:mi><b:mprescripts/><b:none/><b:mn>155</b:mn></b:mmultiscripts></b:math> nuclei were produced in fusion-evaporation reactions induced by beams of 295 and 315 MeV <c:math xmlns:c="http://www.w3.org/1998/Math/MathML"><c:mmultiscripts><c:mi>Ni</c:mi><c:mprescripts/><c:none/><c:mn>58</c:mn></c:mmultiscripts></c:math> ions bombarding an isotopically enriched <d:math xmlns:d="http://www.w3.org/1998/Math/MathML"><d:mmultiscripts><d:mi>Pd</d:mi><d:mprescripts/><d:none/><d:mn>102</d:mn></d:mmultiscripts></d:math> target and separated using the recoil mass separator MARA. An isomeric state having a half-life of 510(30) ns was discovered and is interpreted as a seniority <e:math xmlns:e="http://www.w3.org/1998/Math/MathML"><e:mrow><e:mi>υ</e:mi><e:mo>=</e:mo><e:mn>3</e:mn></e:mrow><e:mo>,</e:mo><e:mo> </e:mo><e:mrow><e:mrow><e:mo>(</e:mo><e:mi>π</e:mi><e:msubsup><e:mi>h</e:mi><e:mrow><e:mn>11</e:mn><e:mo>/</e:mo><e:mn>2</e:mn></e:mrow><e:mn>2</e:mn></e:msubsup><e:mo>⊗</e:mo><e:mi>ν</e:mi><e:msub><e:mi>f</e:mi><e:mrow><e:mn>7</e:mn><e:mo>/</e:mo><e:mn>2</e:mn></e:mrow></e:msub><e:mo>)</e:mo></e:mrow><e:mn>27</e:mn><e:mo>/</e:mo><e:msup><e:mn>2</e:mn><e:mo>−</e:mo></e:msup></e:mrow></e:math> configuration. The <f:math xmlns:f="http://www.w3.org/1998/Math/MathML"><f:mi>γ</f:mi></f:math>-ray transitions emitted in the deexcitation of the isomeric state to the ground state were identified and a level scheme was constructed, from which the excitation energy of the isomer was determined to be 2581.5(10) keV. A <g:math xmlns:g="http://www.w3.org/1998/Math/MathML"><g:mrow><g:mi>B</g:mi><g:mo>(</g:mo><g:mi>E</g:mi><g:mn>2</g:mn><g:mo>)</g:mo></g:mrow></g:math> value of 0.45(3) W.u. was deduced for the 105.4 keV transition depopulating the isomeric state. The deduced level scheme and <h:math xmlns:h="http://www.w3.org/1998/Math/MathML"><h:mrow><h:mi>B</h:mi><h:mo>(</h:mo><h:mi>E</h:mi><h:mn>2</h:mn><h:mo>)</h:mo></h:mrow></h:math> value are compared with systematics and shell-model calculations. Published by the American Physical Society 2024

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Journal
Physical review. C
Published
2024-09-03
DOI
https://doi.org/10.1103/physrevc.110.034303
Citations
2
Primary Topic
Nuclear physics research studies
Type
article
Field-Weighted Citation Impact
1.32

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article

Decay of a microsecond seniority 3 isomeric state in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Hf</mml:mi><mml:mprescripts/><mml:none/><mml:mn>155</mml:mn></mml:mmultiscripts></mml:math>

J. F. Smith, J. Sorri, Cathy Sullivan, O. Neuvonen et al.
2 citations
Physical review. C
Nuclear physics research studies
1.32
article

Decay of a microsecond seniority 3 isomeric state in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Hf</mml:mi><mml:mprescripts/><mml:none/><mml:mn>155</mml:mn></mml:mmultiscripts></mml:math>

J. F. Smith, J. Sorri, Cathy Sullivan, O. Neuvonen, M. Venhart, B. Alayed, Michael Lewis, H. Tann, L. Barber, J. Uusitalo, James B. Hilton, J. Ojala, S. Antalic, P. Papadakis, J. Partanen, J. Romero, Muneerah Al-Aqeel, A. D. Briscoe, P. P. McKee, J. Deary, B. Andel, J. Smallcombe, H. Jutila, Pavol Mošat’, Stuart Szwec, J. G. Cubiss, J. M. Keatings, A. Tolosa-Delgado, K. Auranen, D. S. Judson, P. T. Greenlees, E. Parr, G. Beeton, G. Zimba, P. Rahkila, M. Labiche, H. Joukainen, A. Illana, P. Ruotsalainen, A. McCarter, Chong Qi, L. Waring, A.M. Plaza, V. Bogdanoff, I. Martel, R. D. Page, U. Forsberg, M. Leino, D. M. Cullen, R. Julin, J. Louko, M. Bírová, J. Sarén, T. Grahn, B. Sayğı, H. Badran, J. Pakarinen, S. N. Nathaniel, H. Ayatollahzadeh, E. Uusikylä, C. A. A. Page, D. O'Donnell, M. Sandzelius, D. T. Joss, Minna‐Liisa Luoma
article en
2 citations

Abstract

Excited states in the neutron-deficient nuclide <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mmultiscripts><a:mi>Hf</a:mi><a:mprescripts/><a:none/><a:mn>155</a:mn></a:mmultiscripts></a:math> have been investigated in experiments performed at the Accelerator Laboratory of the University of Jyväskylä. The <b:math xmlns:b="http://www.w3.org/1998/Math/MathML"><b:mmultiscripts><b:mi>Hf</b:mi><b:mprescripts/><b:none/><b:mn>155</b:mn></b:mmultiscripts></b:math> nuclei were produced in fusion-evaporation reactions induced by beams of 295 and 315 MeV <c:math xmlns:c="http://www.w3.org/1998/Math/MathML"><c:mmultiscripts><c:mi>Ni</c:mi><c:mprescripts/><c:none/><c:mn>58</c:mn></c:mmultiscripts></c:math> ions bombarding an isotopically enriched <d:math xmlns:d="http://www.w3.org/1998/Math/MathML"><d:mmultiscripts><d:mi>Pd</d:mi><d:mprescripts/><d:none/><d:mn>102</d:mn></d:mmultiscripts></d:math> target and separated using the recoil mass separator MARA. An isomeric state having a half-life of 510(30) ns was discovered and is interpreted as a seniority <e:math xmlns:e="http://www.w3.org/1998/Math/MathML"><e:mrow><e:mi>υ</e:mi><e:mo>=</e:mo><e:mn>3</e:mn></e:mrow><e:mo>,</e:mo><e:mo> </e:mo><e:mrow><e:mrow><e:mo>(</e:mo><e:mi>π</e:mi><e:msubsup><e:mi>h</e:mi><e:mrow><e:mn>11</e:mn><e:mo>/</e:mo><e:mn>2</e:mn></e:mrow><e:mn>2</e:mn></e:msubsup><e:mo>⊗</e:mo><e:mi>ν</e:mi><e:msub><e:mi>f</e:mi><e:mrow><e:mn>7</e:mn><e:mo>/</e:mo><e:mn>2</e:mn></e:mrow></e:msub><e:mo>)</e:mo></e:mrow><e:mn>27</e:mn><e:mo>/</e:mo><e:msup><e:mn>2</e:mn><e:mo>−</e:mo></e:msup></e:mrow></e:math> configuration. The <f:math xmlns:f="http://www.w3.org/1998/Math/MathML"><f:mi>γ</f:mi></f:math>-ray transitions emitted in the deexcitation of the isomeric state to the ground state were identified and a level scheme was constructed, from which the excitation energy of the isomer was determined to be 2581.5(10) keV. A <g:math xmlns:g="http://www.w3.org/1998/Math/MathML"><g:mrow><g:mi>B</g:mi><g:mo>(</g:mo><g:mi>E</g:mi><g:mn>2</g:mn><g:mo>)</g:mo></g:mrow></g:math> value of 0.45(3) W.u. was deduced for the 105.4 keV transition depopulating the isomeric state. The deduced level scheme and <h:math xmlns:h="http://www.w3.org/1998/Math/MathML"><h:mrow><h:mi>B</h:mi><h:mo>(</h:mo><h:mi>E</h:mi><h:mn>2</h:mn><h:mo>)</h:mo></h:mrow></h:math> value are compared with systematics and shell-model calculations. Published by the American Physical Society 2024

Physical review. CVol. 110(3)
Japan Atomic Energy Agency (JP), University of Liverpool (GB), Ankara University (TR), Qassim University (SA), Science and Technology Facilities Council (GB), Slovak Academy of Sciences (SK), Imam Mohammad ibn Saud Islamic University (SA), Daresbury Laboratory (GB), University of Manchester (GB), Islamic University (BD), AlbaNova (SE), Advanced Science Research Center (JP), Institute of Physics of the Slovak Academy of Sciences (SK), Facility for Rare Isotope Beams, Türkiye Enerji Nükleer ve Maden Araştırma Kurumu (TR), University of York (GB), Turkish Atomic Energy Authority (TR), Comenius University Bratislava (SK), Universidad de Huelva (ES), University of the West of Scotland (GB), KTH Royal Institute of Technology (SE), Michigan State University (US), University of Jyväskylä (FI), University of Oulu (FI)
U.S. Department of Energy, Academy of Finland, Jyväskylän Yliopisto, Agentúra na Podporu Výskumu a Vývoja, Vedecká Grantová Agentúra MŠVVaŠ SR a SAV, Seventh Framework Programme, Science and Technology Facilities Council, European Regional Development Fund, Lawrence Berkeley National Laboratory
Openalex Percentile: Top 11%
Nuclear physics research studies
1.32
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