Competition between Allowed and First-Forbidden $β$ Decay: The Case of $^{208}$Hg$→^{208}$Tl

The $β$ decay of $^{208}$Hg into the one-proton hole, one neutron-particle $^{208}_{81}$Tl$_{127}$ nucleus was investigated at CERN-ISOLDE. Shell-model calculations describe well the level scheme deduced, validating the proton-neutron interactions used, with implications for the whole of the N>12...

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Autores principales: Carroll, R J, Podolyák, Zs, Berry, T, Grawe, H, Alexander, T, Andreyev, A N, Ansari, S, Borge, M J G, Brunet, M, Creswell, J R, Fraile, L M, Fahlander, C, Fynbo, H O U, Gamba, E R, Gelletly, W, Gerst, R B, Górska, M, Gredley, A, Greenlees, P T, Harkness-Brennan, L J, Huyse, M, Judge, S M, Judson, D S, Konki, J, Kurcewicz, J, Kuti, I, Lalkovski, S, Lazarus, I H, Lică, R, Lund, M, Madurga, M, Marginean, N, Marginean, R, Marroquin, I, Mihai, C, Mihai, R E, Nácher, E, Negret, A, Nita, C, Pascu, S, Page, R D, Patel, Z, Perea, A, Phrompao, J, Piersa, M, Pucknell, V, Rahkila, P, Rapisarda, E, Regan, P H, Rotaru, F, Rudigier, M, Shand, C M, Shearman, R, Stegemann, S, Stora, T, Sotty, Ch, Tengblad, O, Van Duppen, P, Vedia, V, Wadsworth, R, Walker, P M, Warr, N, Wearing, F, De Witte, H
Lenguaje:eng
Publicado: 2020
Materias:
Nuclear Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1103/PhysRevLett.125.192501
http://cds.cern.ch/record/2743951
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author Carroll, R J
Podolyák, Zs
Berry, T
Grawe, H
Alexander, T
Andreyev, A N
Ansari, S
Borge, M J G
Brunet, M
Creswell, J R
Fraile, L M
Fahlander, C
Fynbo, H O U
Gamba, E R
Gelletly, W
Gerst, R B
Górska, M
Gredley, A
Greenlees, P T
Harkness-Brennan, L J
Huyse, M
Judge, S M
Judson, D S
Konki, J
Kurcewicz, J
Kuti, I
Lalkovski, S
Lazarus, I H
Lică, R
Lund, M
Madurga, M
Marginean, N
Marginean, R
Marroquin, I
Mihai, C
Mihai, R E
Nácher, E
Negret, A
Nita, C
Pascu, S
Page, R D
Patel, Z
Perea, A
Phrompao, J
Piersa, M
Pucknell, V
Rahkila, P
Rapisarda, E
Regan, P H
Rotaru, F
Rudigier, M
Shand, C M
Shearman, R
Stegemann, S
Stora, T
Sotty, Ch
Tengblad, O
Van Duppen, P
Vedia, V
Wadsworth, R
Walker, P M
Warr, N
Wearing, F
De Witte, H
author_facet Carroll, R J
Podolyák, Zs
Berry, T
Grawe, H
Alexander, T
Andreyev, A N
Ansari, S
Borge, M J G
Brunet, M
Creswell, J R
Fraile, L M
Fahlander, C
Fynbo, H O U
Gamba, E R
Gelletly, W
Gerst, R B
Górska, M
Gredley, A
Greenlees, P T
Harkness-Brennan, L J
Huyse, M
Judge, S M
Judson, D S
Konki, J
Kurcewicz, J
Kuti, I
Lalkovski, S
Lazarus, I H
Lică, R
Lund, M
Madurga, M
Marginean, N
Marginean, R
Marroquin, I
Mihai, C
Mihai, R E
Nácher, E
Negret, A
Nita, C
Pascu, S
Page, R D
Patel, Z
Perea, A
Phrompao, J
Piersa, M
Pucknell, V
Rahkila, P
Rapisarda, E
Regan, P H
Rotaru, F
Rudigier, M
Shand, C M
Shearman, R
Stegemann, S
Stora, T
Sotty, Ch
Tengblad, O
Van Duppen, P
Vedia, V
Wadsworth, R
Walker, P M
Warr, N
Wearing, F
De Witte, H
author_sort Carroll, R J
collection CERN
description The $β$ decay of $^{208}$Hg into the one-proton hole, one neutron-particle $^{208}_{81}$Tl$_{127}$ nucleus was investigated at CERN-ISOLDE. Shell-model calculations describe well the level scheme deduced, validating the proton-neutron interactions used, with implications for the whole of the N>126, Z<82 quadrant of neutron-rich nuclei. While both negative and positive parity states with spin 0 and 1 are expected within the Qβ window, only three negative parity states are populated directly in the β decay. The data provide a unique test of the competition between allowed Gamow-Teller and Fermi, and first-forbidden $β$ decays, essential for the understanding of the nucleosynthesis of heavy nuclei in the rapid neutron capture process. Furthermore, the observation of the parity changing $0^+→0^-β$ decay where the daughter state is core excited is unique, and can provide information on mesonic corrections of effective operators.
id oai-inspirehep.net-1828424
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2020
record_format invenio
spelling oai-inspirehep.net-18284242020-11-10T19:24:13Zdoi:10.1103/PhysRevLett.125.192501http://cds.cern.ch/record/2743951engCarroll, R JPodolyák, ZsBerry, TGrawe, HAlexander, TAndreyev, A NAnsari, SBorge, M J GBrunet, MCreswell, J RFraile, L MFahlander, CFynbo, H O UGamba, E RGelletly, WGerst, R BGórska, MGredley, AGreenlees, P THarkness-Brennan, L JHuyse, MJudge, S MJudson, D SKonki, JKurcewicz, JKuti, ILalkovski, SLazarus, I HLică, RLund, MMadurga, MMarginean, NMarginean, RMarroquin, IMihai, CMihai, R ENácher, ENegret, ANita, CPascu, SPage, R DPatel, ZPerea, APhrompao, JPiersa, MPucknell, VRahkila, PRapisarda, ERegan, P HRotaru, FRudigier, MShand, C MShearman, RStegemann, SStora, TSotty, ChTengblad, OVan Duppen, PVedia, VWadsworth, RWalker, P MWarr, NWearing, FDe Witte, HCompetition between Allowed and First-Forbidden $β$ Decay: The Case of $^{208}$Hg$→^{208}$TlNuclear Physics - ExperimentThe $β$ decay of $^{208}$Hg into the one-proton hole, one neutron-particle $^{208}_{81}$Tl$_{127}$ nucleus was investigated at CERN-ISOLDE. Shell-model calculations describe well the level scheme deduced, validating the proton-neutron interactions used, with implications for the whole of the N>126, Z<82 quadrant of neutron-rich nuclei. While both negative and positive parity states with spin 0 and 1 are expected within the Qβ window, only three negative parity states are populated directly in the β decay. The data provide a unique test of the competition between allowed Gamow-Teller and Fermi, and first-forbidden $β$ decays, essential for the understanding of the nucleosynthesis of heavy nuclei in the rapid neutron capture process. Furthermore, the observation of the parity changing $0^+→0^-β$ decay where the daughter state is core excited is unique, and can provide information on mesonic corrections of effective operators.oai:inspirehep.net:18284242020
spellingShingle Nuclear Physics - Experiment
Carroll, R J
Podolyák, Zs
Berry, T
Grawe, H
Alexander, T
Andreyev, A N
Ansari, S
Borge, M J G
Brunet, M
Creswell, J R
Fraile, L M
Fahlander, C
Fynbo, H O U
Gamba, E R
Gelletly, W
Gerst, R B
Górska, M
Gredley, A
Greenlees, P T
Harkness-Brennan, L J
Huyse, M
Judge, S M
Judson, D S
Konki, J
Kurcewicz, J
Kuti, I
Lalkovski, S
Lazarus, I H
Lică, R
Lund, M
Madurga, M
Marginean, N
Marginean, R
Marroquin, I
Mihai, C
Mihai, R E
Nácher, E
Negret, A
Nita, C
Pascu, S
Page, R D
Patel, Z
Perea, A
Phrompao, J
Piersa, M
Pucknell, V
Rahkila, P
Rapisarda, E
Regan, P H
Rotaru, F
Rudigier, M
Shand, C M
Shearman, R
Stegemann, S
Stora, T
Sotty, Ch
Tengblad, O
Van Duppen, P
Vedia, V
Wadsworth, R
Walker, P M
Warr, N
Wearing, F
De Witte, H
Competition between Allowed and First-Forbidden $β$ Decay: The Case of $^{208}$Hg$→^{208}$Tl
title Competition between Allowed and First-Forbidden $β$ Decay: The Case of $^{208}$Hg$→^{208}$Tl
title_full Competition between Allowed and First-Forbidden $β$ Decay: The Case of $^{208}$Hg$→^{208}$Tl
title_fullStr Competition between Allowed and First-Forbidden $β$ Decay: The Case of $^{208}$Hg$→^{208}$Tl
title_full_unstemmed Competition between Allowed and First-Forbidden $β$ Decay: The Case of $^{208}$Hg$→^{208}$Tl
title_short Competition between Allowed and First-Forbidden $β$ Decay: The Case of $^{208}$Hg$→^{208}$Tl
title_sort competition between allowed and first-forbidden $β$ decay: the case of $^{208}$hg$→^{208}$tl
topic Nuclear Physics - Experiment
url https://dx.doi.org/10.1103/PhysRevLett.125.192501
http://cds.cern.ch/record/2743951
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