A novel method for the measurement of half-lives and decay branching ratios of exotic nuclei

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dc.creator Miskun, Ivan
dc.creator Dickel, Timo
dc.creator Mardor, Israel
dc.creator Hornung, Christine
dc.creator Amanbayev, Daler
dc.creator San Andres, Samuel Ayet
dc.creator Bergmann, Julian
dc.creator Ebert, Jens
dc.creator Geissel, Hans
dc.creator Gorska, Magdalena
dc.creator Greiner, Florian
dc.creator Haettner, Emma
dc.creator Plaß, Wolfgang R.
dc.creator Purushothaman, Sivaji
dc.creator Scheidenberger, Christoph
dc.creator Rink, Ann-Kathrin
dc.creator Weick, Helmut
dc.creator Bagchi, Soumya
dc.creator Constantin, Paul
dc.creator Kaur, Satbir
dc.creator Lippert, Wayne
dc.creator Mei, Bo
dc.creator Moore, Iain
dc.creator Otto, Jan-Hendrick
dc.creator Pietri, Stephane
dc.creator Pohjalainen, Ilkka
dc.creator Prochazka, Andrej
dc.creator Rappold, Christophe
dc.creator Reiter, Moritz P.
dc.creator Tanaka, Yoshiki K.
dc.creator Winfield, John S.
dc.date.accessioned 2021-11-09T15:35:15Z
dc.date.available 2021-11-09T15:35:15Z
dc.date.issued 2019-09-04
dc.identifier.issn 1434-601X
dc.identifier.uri http://library2.smu.ca/xmlui/handle/01/29968
dc.description Published Version en_CA
dc.description.abstract A novel method for simultaneous measurement of masses, Q-values, isomer excitation energies, half-lives and decay branching ratios of exotic nuclei has been demonstrated. The method includes first use of a stopping cell as an ion trap, combining storage of mother and daughter nuclides for variable durations in a cryogenic stopping cell (CSC), and afterwards the identification and counting of them by a multiple-reflection time-of-flight mass spectrometer (MR-TOF-MS). We utilized our method to record the decay and growth of the 216Po and 212Pb isotopes (alpha decay) and of the 119m2Sb isomer (t1/2=850±90 ms) and 119gSb isotope (isomer transition), obtaining half-lives consistent with literature values. The amount of non-nuclear-decay losses in the CSC up to ∼10 s is negligible, which exhibits its extraordinary cleanliness. For 119Sb isotopes, we present the first direct measurements of the mass of its ground state, and the excitation energy and decay branching ratios of its second isomeric state (119m2Sb). This resolves discrepancies in previous excitation energy data, and is the first direct evidence that the 119m2Sb isomer decays dominantly via γ emission. These results pave the way for the measurement of branching ratios of exotic nuclei. en_CA
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dc.description.provenance Made available in DSpace on 2021-11-09T15:35:15Z (GMT). No. of bitstreams: 1 Bagchi_Soumya_articles_2019.pdf: 1659835 bytes, checksum: 2c04efd870731972e21d6118dc38f379 (MD5) Previous issue date: 2019-09-04 en
dc.language.iso en en_CA
dc.publisher Springer Nature en_CA
dc.relation.uri https://doi.org/10.1140/epja/i2019-12837-8
dc.rights © 2019 The Author(s). <a rel="license" href="http://creativecommons.org/licenses/by/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by/4.0/80x15.png" /></a> This work is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 International License</a> which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
dc.title A novel method for the measurement of half-lives and decay branching ratios of exotic nuclei en_CA
dc.type Text en_CA
dcterms.bibliographicCitation The European Physical Journal A 55(9): 148. (2019) en_CA
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© 2019 The Author(s). Creative Commons License This work is licensed under a Creative Commons Attribution 4.0 International License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 
Published Version: https://doi.org/10.1140/epja/i2019-12837-8
 
 

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