Beta decay studies and search for octupole deformation in the A ∼ 225 Po-Fr nuclei

In the landscape of nuclear shapes, dominated by reflection-symmetric forms leading to either spherical or axially deformed arrangements, the occurrence of asymmetric pear-like nuclei has long been searched for. Evidence for static octupole deformation has only been found in selective areas of the n...

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Main Author: Polettini M.
Format: Article
Language:English
Published: EDP Sciences 2022-01-01
Series:EPJ Web of Conferences
Online Access:https://www.epj-conferences.org/articles/epjconf/pdf/2022/12/epjconf_lnes2022_00009.pdf
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author Polettini M.
author_facet Polettini M.
author_sort Polettini M.
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description In the landscape of nuclear shapes, dominated by reflection-symmetric forms leading to either spherical or axially deformed arrangements, the occurrence of asymmetric pear-like nuclei has long been searched for. Evidence for static octupole deformation has only been found in selective areas of the nuclear chart, in the mass regions A ∼ 222 and A ∼ 146, the so-called “Islands of Octupole Deformation” (IOD). This paper is focused on β decay studies in the Po-Fr nuclei in the 220 ≤ A ≤ 230 island of octupole deformation exploiting the FRS+DESPEC setup at GSI in Spring 2021. The experimental setup and the analysis techniques employed to perform this study are here shown and discussed, together with preliminary results from the on-going analysis.
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spelling doaj.art-f666fb9efddc4255935ef38faf5ee80f2022-12-22T02:56:53ZengEDP SciencesEPJ Web of Conferences2100-014X2022-01-012680000910.1051/epjconf/202226800009epjconf_lnes2022_00009Beta decay studies and search for octupole deformation in the A ∼ 225 Po-Fr nucleiPolettini M.0Universit`a degli Studi di Milano e INFN, Sezione di MilanoIn the landscape of nuclear shapes, dominated by reflection-symmetric forms leading to either spherical or axially deformed arrangements, the occurrence of asymmetric pear-like nuclei has long been searched for. Evidence for static octupole deformation has only been found in selective areas of the nuclear chart, in the mass regions A ∼ 222 and A ∼ 146, the so-called “Islands of Octupole Deformation” (IOD). This paper is focused on β decay studies in the Po-Fr nuclei in the 220 ≤ A ≤ 230 island of octupole deformation exploiting the FRS+DESPEC setup at GSI in Spring 2021. The experimental setup and the analysis techniques employed to perform this study are here shown and discussed, together with preliminary results from the on-going analysis.https://www.epj-conferences.org/articles/epjconf/pdf/2022/12/epjconf_lnes2022_00009.pdf
spellingShingle Polettini M.
Beta decay studies and search for octupole deformation in the A ∼ 225 Po-Fr nuclei
EPJ Web of Conferences
title Beta decay studies and search for octupole deformation in the A ∼ 225 Po-Fr nuclei
title_full Beta decay studies and search for octupole deformation in the A ∼ 225 Po-Fr nuclei
title_fullStr Beta decay studies and search for octupole deformation in the A ∼ 225 Po-Fr nuclei
title_full_unstemmed Beta decay studies and search for octupole deformation in the A ∼ 225 Po-Fr nuclei
title_short Beta decay studies and search for octupole deformation in the A ∼ 225 Po-Fr nuclei
title_sort beta decay studies and search for octupole deformation in the a ∼ 225 po fr nuclei
url https://www.epj-conferences.org/articles/epjconf/pdf/2022/12/epjconf_lnes2022_00009.pdf
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