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The $\beta$-decay of $^{70}$Kr into $^{70}$Br: Restoration of the pseudo-SU(4) symmetry

dc.contributor.authorVITÉZ-SVEICZER, A.
dc.contributor.authorALGORA, A.
dc.contributor.authorMORALES, A.I.
dc.contributor.authorRUBIO, B.
dc.contributor.authorKISS, G.G.
dc.contributor.authorSARRIGUREN, P.
hal.structure.identifierGrand Accélérateur National d'Ions Lourds [GANIL]
dc.contributor.authorVAN ISACKER, P.
dc.contributor.authorDE ANGELIS, G.
dc.contributor.authorRECCHIA, F.
dc.contributor.authorNISHIMURA, S.
dc.contributor.authorAGRAMUNT, J.
dc.contributor.authorGUADILLA, V.
dc.contributor.authorMONTANER-PIZÁ, A.
dc.contributor.authorORRIGO, S.E.A.
dc.contributor.authorHORVÁTH, A.
dc.contributor.authorNAPOLI, D.
dc.contributor.authorLENZI, S.
dc.contributor.authorBOSO, A.
dc.contributor.authorPHONG, V.H.
dc.contributor.authorWU, J.
dc.contributor.authorSÖDERSTRÖM, P.-A.
dc.contributor.authorSUMIKAMA, T.
dc.contributor.authorSUZUKI, H.
dc.contributor.authorTAKEDA, H.
dc.contributor.authorAHN, D.S.
dc.contributor.authorBABA, H.
dc.contributor.authorDOORNEBAL, P.
dc.contributor.authorFUKUDA, N.
dc.contributor.authorINABE, N.
dc.contributor.authorISOBE, T.
dc.contributor.authorKUBO, T.
dc.contributor.authorKUBONO, S.
dc.contributor.authorSAKURAI, H.
dc.contributor.authorSHIMIZU, Y.
dc.contributor.authorSIDONG, C.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorBLANK, B.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorASCHER, P.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorGERBAUX, M.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorGOIGOUX, T.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorGIOVINAZZO, J.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorGRÉVY, S.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorKURTUKIÁN NIETO, T.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorMAGRON, C.
dc.contributor.authorGELLETLY, W.
dc.contributor.authorDOMBRÁDI, Zs.
dc.contributor.authorFUJITA, Y.
dc.contributor.authorTANAKA, M.
dc.contributor.authorAGUILERA, P.
dc.contributor.authorMOLINA, F.
dc.contributor.authorEBERTH, J.
dc.contributor.authorDIEL, F.
dc.contributor.authorLUBOS, D.
dc.contributor.authorBORCEA, C.
dc.contributor.authorGANIOGLU, E.
dc.contributor.authorNISHIMURA, D.
dc.contributor.authorOIKAWA, H.
dc.contributor.authorTAKEI, Y.
dc.contributor.authorYAGI, S.
hal.structure.identifierInstitut de Recherches sur les lois Fondamentales de l'Univers [IRFU]
dc.contributor.authorKORTEN, W.
hal.structure.identifierGrand Accélérateur National d'Ions Lourds [GANIL]
dc.contributor.authorDE FRANCE, G.
dc.contributor.authorDAVIES, P.
dc.contributor.authorLIU, J.
dc.contributor.authorLEE, J.
dc.contributor.authorLOKOTKO, T.
dc.contributor.authorKOJOUHAROV, I.
dc.contributor.authorKURZ, N.
dc.contributor.authorSHAFFNER, H.
dc.contributor.authorPETROVICI, A.
dc.date.accessioned2023-11-20T16:50:55Z
dc.date.available2023-11-20T16:50:55Z
dc.date.issued2022
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/185075
dc.description.abstractEnThe β-decay of the even-even nucleus <sup loc="post">70</sup>Kr with <math altimg="si1.svg"><mi>Z</mi><mo linebreak="goodbreak" linebreakstyle="after">=</mo><mi>N</mi><mo linebreak="goodbreak" linebreakstyle="after">+</mo><mn>2</mn></math>, has been investigated at the Radioactive Ion Beam Factory (RIBF) of the RIKEN Nishina Center using the BigRIPS fragment separator, the ZeroDegree Spectrometer, the WAS3ABI implantation station and the EURICA HPGe cluster array. Fifteen γ-rays associated with the β-decay of <sup loc="post">70</sup>Kr into <sup loc="post">70</sup>Br have been identified for the first time, defining ten populated states below <math altimg="si2.svg"><msub><mrow><mi>E</mi></mrow><mrow><mi mathvariant="normal">exc</mi></mrow></msub><mo linebreak="goodbreak" linebreakstyle="after">=</mo><mn>3300</mn></math> keV. The half-life of <sup loc="post">70</sup>Kr was derived with increased precision and found to be <math altimg="si3.svg"><msub><mrow><mi>t</mi></mrow><mrow><mn>1</mn><mo stretchy="false">/</mo><mn>2</mn></mrow></msub><mo linebreak="goodbreak" linebreakstyle="after">=</mo><mn>45.19</mn><mo>±</mo><mn>0.14</mn></math> ms. The β-delayed proton emission probability has also been determined as <math altimg="si4.svg"><msub><mrow><mi>ε</mi></mrow><mrow><mi mathvariant="normal">p</mi></mrow></msub><mo linebreak="goodbreak" linebreakstyle="after">=</mo><mn>0.545</mn><mo stretchy="false">(</mo><mn>23</mn><mo stretchy="false">)</mo><mtext>%</mtext></math>. An increase in the β-strength to the yrast 1<sup loc="post">+</sup> state in comparison with the heaviest <math altimg="si1.svg"><mi>Z</mi><mo linebreak="goodbreak" linebreakstyle="after">=</mo><mi>N</mi><mo linebreak="goodbreak" linebreakstyle="after">+</mo><mn>2</mn></math> system studied so far (<sup loc="post">62</sup>Ge decay) is observed that may indicate increased np correlations in the <math altimg="si5.svg"><mi>T</mi><mo linebreak="goodbreak" linebreakstyle="after">=</mo><mn>0</mn></math> channel. The β-decay strength deduced from the results is interpreted in terms of the proton-neutron quasiparticle random-phase approximation (pnQRPA) and also with a schematic model that includes isoscalar and isovector pairing in addition to quadrupole deformation. The application of this last model indicates an approximate realization of pseudo-SU(4) symmetry in this system.
dc.language.isoen
dc.subject.enBeta decay of
dc.subject.enKr
dc.subject.enpn pairing
dc.subject.enGT strength distribution
dc.subject.enPseudo-SU(4) symmetry
dc.subject.enQRPA calculations
dc.title.enThe $\beta$-decay of $^{70}$Kr into $^{70}$Br: Restoration of the pseudo-SU(4) symmetry
dc.typeArticle de revue
dc.identifier.doi10.1016/j.physletb.2022.137123
dc.subject.halPhysique [physics]/Physique Nucléaire Expérimentale [nucl-ex]
bordeaux.journalPhys.Lett.B
bordeaux.page137123
bordeaux.volume830
bordeaux.hal.laboratoriesCentre d'Études Nucléaires de Bordeaux Gradignan (CENBG)*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionCNRS
bordeaux.peerReviewedoui
hal.identifierhal-03665042
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03665042v1
bordeaux.COinSctx_ver=Z39.88-2004&amp;rft_val_fmt=info:ofi/fmt:kev:mtx:journal&amp;rft.jtitle=Phys.Lett.B&amp;rft.date=2022&amp;rft.volume=830&amp;rft.spage=137123&amp;rft.epage=137123&amp;rft.au=VIT%C3%89Z-SVEICZER,%20A.&amp;ALGORA,%20A.&amp;MORALES,%20A.I.&amp;RUBIO,%20B.&amp;KISS,%20G.G.&amp;rft.genre=article


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