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Fine structure in the a decay of the 8(+) isomer in U-216,U-218
Chinese Acad Sci, Inst Modern Phys, CAS Key Lab High Precis Nucl Spect, Lanzhou 730000, Peoples R China..
Chinese Acad Sci, Inst Modern Phys, CAS Key Lab High Precis Nucl Spect, Lanzhou 730000, Peoples R China.;Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China.;Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China..
Chinese Acad Sci, Inst Modern Phys, CAS Key Lab High Precis Nucl Spect, Lanzhou 730000, Peoples R China.;Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China..
KTH, School of Engineering Sciences (SCI), Physics, Nuclear Physics.ORCID iD: 0000-0002-1406-5695
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2022 (English)In: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 106, no 2, article id 024305Article in journal (Refereed) Published
Abstract [en]

The extremely neutron-deficient even-even uranium isotopes( 216,218)U were produced in the complete-fusion reactions induced by impinging Ar-40 and Ca-40 ions on W-180,W-182,W-184 targets. Fusion evaporation residues were separated in flight by the gas-filled recoil separator SHANS (Spectrometer for Heavy Atoms and Nuclear Structure) and subsequently identified using the recoil-alpha-correlation method. The improved ground-state to ground-state alpha-decay properties of( 216,218)U were reported in [Z. Y. Zhang et al., Phys. Rev. Lett. 126, 152502 (2021)]. In this paper, we report on new alpha-decay activities with E-alpha = 10 163(27) keV for 216U and E-alpha = 10 073(16) keV for 218U, which decay from the 8(+) isomeric states of( 216,218)U into the 2(+) states of their daughter nuclei Th-212,Th-214, respectively. The new results extend the systematics of the alpha-decay fine structure for the N = 124 and 126 even-even isotones.

Place, publisher, year, edition, pages
American Physical Society (APS) , 2022. Vol. 106, no 2, article id 024305
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:kth:diva-317357DOI: 10.1103/PhysRevC.106.024305ISI: 000847931900001Scopus ID: 2-s2.0-85137397226OAI: oai:DiVA.org:kth-317357DiVA, id: diva2:1694552
Note

QC 20220909

Available from: 2022-09-09 Created: 2022-09-09 Last updated: 2023-05-17Bibliographically approved

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