Investigation of the Δn = 0 selection rule in Gamow-Teller transitions: The β-decay of                          
                        207
                                                 Hg

T. A. Berry; Zs Podolyák; R. J. Carroll; R. Lică; H. Grawe; N. K. Timofeyuk; T. Alexander; A. N. Andreyev; S. Ansari; M. J.G. Borge; J. Creswell; C. Fahlander; L. M. Fraile; H. O.U. Fynbo; W. Gelletly; R. B. Gerst; M. Górska; A. Gredley; P. Greenlees; L. J. Harkness-Brennan; M. Huyse; S. M. Judge; D. S. Judson; J. Konki; J. Kurcewicz; I. Kuti; S. Lalkovski; I. Lazarus; M. Lund; M. Madurga; N. Mărginean; R. Mărginean; I. Marroquin; C. Mihai; R. E. Mihai; E. Nácher; S. Nae; A. Negret; C. Niţă; R. D. Page; S. Pascu; Z. Patel; A. Perea; V. Pucknell; P. Rahkila; E. Rapisarda; P. H. Regan; F. Rotaru; C. M. Shand; E. C. Simpson; Ch Sotty; S. Stegemann; T. Stora; O. Tengblad; A. Turturica; P. Van Duppen; V. Vedia; R. Wadsworth; P. M. Walker; N. Warr; F. Wearing; H. De Witte

doi:10.1016/j.physletb.2019.04.039

Investigation of the Δn = 0 selection rule in Gamow-Teller transitions: The β-decay of ²⁰⁷ Hg

T. A. Berry^*
, Zs Podolyák
, R. J. Carroll
, R. Lică
, H. Grawe
, N. K. Timofeyuk
, T. Alexander
, A. N. Andreyev
, S. Ansari
, M. J.G. Borge
, J. Creswell
, C. Fahlander
, L. M. Fraile
, H. O.U. Fynbo
, W. Gelletly
, R. B. Gerst
, M. Górska
, A. Gredley
, P. Greenlees
, L. J. Harkness-Brennan

M. Huyse, S. M. Judge, D. S. Judson, J. Konki, J. Kurcewicz, I. Kuti, S. Lalkovski, I. Lazarus, M. Lund, M. Madurga, N. Mărginean, R. Mărginean, I. Marroquin, C. Mihai, R. E. Mihai, E. Nácher, S. Nae, A. Negret, C. Niţă, R. D. Page, S. Pascu, Z. Patel, A. Perea, V. Pucknell, P. Rahkila, E. Rapisarda, P. H. Regan, F. Rotaru, C. M. Shand, E. C. Simpson, Ch Sotty, S. Stegemann, T. Stora, O. Tengblad, A. Turturica, P. Van Duppen, V. Vedia, R. Wadsworth, P. M. Walker, N. Warr, F. Wearing, H. De Witte

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

Gamow-Teller β decay is forbidden if the number of nodes in the radial wave functions of the initial and final states is different. This Δn=0 requirement plays a major role in the β decay of heavy neutron-rich nuclei, affecting the nucleosynthesis through the increased half-lives of nuclei on the astrophysical r-process pathway below both Z=50 (for N>82) and Z=82 (for N>126). The level of forbiddenness of the Δn=1ν1g _9/2 →π0g _7/2 transition has been investigated from the β ⁻ decay of the ground state of ²⁰⁷ Hg into the single-proton-hole nucleus ²⁰⁷ Tl in an experiment at the ISOLDE Decay Station. From statistical observational limits on possible γ-ray transitions depopulating the π0g _7/2 ⁻¹ state in ²⁰⁷ Tl, an upper limit of 3.9×10 ⁻³ % was obtained for the probability of this decay, corresponding to log⁡ft>8.8 within a 95% confidence limit. This is the most stringent test of the Δn=0 selection rule to date.

Original language	English
Pages (from-to)	271-275
Number of pages	5
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	793
Early online date	24 Apr 2019
DOIs	https://doi.org/10.1016/j.physletb.2019.04.039
Publication status	E-pub ahead of print - 24 Apr 2019

Bibliographical note

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10.1016/j.physletb.2019.04.039

1-s2.0-S0370269319302722-main
© 2019 The Authors.
Final published version, 348 KBLicence: CC BY

Cite this

Berry, T. A., Podolyák, Z., Carroll, R. J., Lică, R., Grawe, H., Timofeyuk, N. K., Alexander, T., Andreyev, A. N., Ansari, S., Borge, M. J. G., Creswell, J., Fahlander, C., Fraile, L. M., Fynbo, H. O. U., Gelletly, W., Gerst, R. B., Górska, M., Gredley, A., Greenlees, P., ... De Witte, H. (2019). Investigation of the Δn = 0 selection rule in Gamow-Teller transitions: The β-decay of ²⁰⁷ Hg. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 793, 271-275. Advance online publication. https://doi.org/10.1016/j.physletb.2019.04.039

Berry, T. A. ; Podolyák, Zs ; Carroll, R. J. et al. / Investigation of the Δn = 0 selection rule in Gamow-Teller transitions : The β-decay of ²⁰⁷ Hg. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2019 ; Vol. 793. pp. 271-275.

@article{4fb1b4a54e0742d7bff8fa9ea368b869,

title = "Investigation of the Δn = 0 selection rule in Gamow-Teller transitions: The β-decay of 207 Hg",

abstract = " Gamow-Teller β decay is forbidden if the number of nodes in the radial wave functions of the initial and final states is different. This Δn=0 requirement plays a major role in the β decay of heavy neutron-rich nuclei, affecting the nucleosynthesis through the increased half-lives of nuclei on the astrophysical r-process pathway below both Z=50 (for N>82) and Z=82 (for N>126). The level of forbiddenness of the Δn=1ν1g 9/2 →π0g 7/2 transition has been investigated from the β − decay of the ground state of 207 Hg into the single-proton-hole nucleus 207 Tl in an experiment at the ISOLDE Decay Station. From statistical observational limits on possible γ-ray transitions depopulating the π0g 7/2 −1 state in 207 Tl, an upper limit of 3.9{\texttimes}10 −3 \% was obtained for the probability of this decay, corresponding to log⁡ft>8.8 within a 95\% confidence limit. This is the most stringent test of the Δn=0 selection rule to date. ",

author = "Berry, \{T. A.\} and Zs Podoly{\'a}k and Carroll, \{R. J.\} and R. Lic{\u a} and H. Grawe and Timofeyuk, \{N. K.\} and T. Alexander and Andreyev, \{A. N.\} and S. Ansari and Borge, \{M. J.G.\} and J. Creswell and C. Fahlander and Fraile, \{L. M.\} and Fynbo, \{H. O.U.\} and W. Gelletly and Gerst, \{R. B.\} and M. G{\'o}rska and A. Gredley and P. Greenlees and Harkness-Brennan, \{L. J.\} and M. Huyse and Judge, \{S. M.\} and Judson, \{D. S.\} and J. Konki and J. Kurcewicz and I. Kuti and S. Lalkovski and I. Lazarus and M. Lund and M. Madurga and N. M{\u a}rginean and R. M{\u a}rginean and I. Marroquin and C. Mihai and Mihai, \{R. E.\} and E. N{\'a}cher and S. Nae and A. Negret and C. Ni{\c t}{\u a} and Page, \{R. D.\} and S. Pascu and Z. Patel and A. Perea and V. Pucknell and P. Rahkila and E. Rapisarda and Regan, \{P. H.\} and F. Rotaru and Shand, \{C. M.\} and Simpson, \{E. C.\} and Ch Sotty and S. Stegemann and T. Stora and O. Tengblad and A. Turturica and \{Van Duppen\}, P. and V. Vedia and R. Wadsworth and Walker, \{P. M.\} and N. Warr and F. Wearing and \{De Witte\}, H.",

note = "{\textcopyright} 2019 The Authors.",

year = "2019",

month = apr,

day = "24",

doi = "10.1016/j.physletb.2019.04.039",

language = "English",

volume = "793",

pages = "271--275",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

}

Berry, TA, Podolyák, Z, Carroll, RJ, Lică, R, Grawe, H, Timofeyuk, NK, Alexander, T, Andreyev, AN, Ansari, S, Borge, MJG, Creswell, J, Fahlander, C, Fraile, LM, Fynbo, HOU, Gelletly, W, Gerst, RB, Górska, M, Gredley, A, Greenlees, P, Harkness-Brennan, LJ, Huyse, M, Judge, SM, Judson, DS, Konki, J, Kurcewicz, J, Kuti, I, Lalkovski, S, Lazarus, I, Lund, M, Madurga, M, Mărginean, N, Mărginean, R, Marroquin, I, Mihai, C, Mihai, RE, Nácher, E, Nae, S, Negret, A, Niţă, C, Page, RD, Pascu, S, Patel, Z, Perea, A, Pucknell, V, Rahkila, P, Rapisarda, E, Regan, PH, Rotaru, F, Shand, CM, Simpson, EC, Sotty, C, Stegemann, S, Stora, T, Tengblad, O, Turturica, A, Van Duppen, P, Vedia, V, Wadsworth, R, Walker, PM, Warr, N, Wearing, F & De Witte, H 2019, 'Investigation of the Δn = 0 selection rule in Gamow-Teller transitions: The β-decay of ²⁰⁷ Hg', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 793, pp. 271-275. https://doi.org/10.1016/j.physletb.2019.04.039

Investigation of the Δn = 0 selection rule in Gamow-Teller transitions: The β-decay of ²⁰⁷ Hg. / Berry, T. A.; Podolyák, Zs; Carroll, R. J. et al.
In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 793, 24.04.2019, p. 271-275.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Investigation of the Δn = 0 selection rule in Gamow-Teller transitions

T2 - The β-decay of 207 Hg

AU - Berry, T. A.

AU - Podolyák, Zs

AU - Carroll, R. J.

AU - Lică, R.

AU - Grawe, H.

AU - Timofeyuk, N. K.

AU - Alexander, T.

AU - Andreyev, A. N.

AU - Ansari, S.

AU - Borge, M. J.G.

AU - Creswell, J.

AU - Fahlander, C.

AU - Fraile, L. M.

AU - Fynbo, H. O.U.

AU - Gelletly, W.

AU - Gerst, R. B.

AU - Górska, M.

AU - Gredley, A.

AU - Greenlees, P.

AU - Harkness-Brennan, L. J.

AU - Huyse, M.

AU - Judge, S. M.

AU - Judson, D. S.

AU - Konki, J.

AU - Kurcewicz, J.

AU - Kuti, I.

AU - Lalkovski, S.

AU - Lazarus, I.

AU - Lund, M.

AU - Madurga, M.

AU - Mărginean, N.

AU - Mărginean, R.

AU - Marroquin, I.

AU - Mihai, C.

AU - Mihai, R. E.

AU - Nácher, E.

AU - Nae, S.

AU - Negret, A.

AU - Niţă, C.

AU - Page, R. D.

AU - Pascu, S.

AU - Patel, Z.

AU - Perea, A.

AU - Pucknell, V.

AU - Rahkila, P.

AU - Rapisarda, E.

AU - Regan, P. H.

AU - Rotaru, F.

AU - Shand, C. M.

AU - Simpson, E. C.

AU - Sotty, Ch

AU - Stegemann, S.

AU - Stora, T.

AU - Tengblad, O.

AU - Turturica, A.

AU - Van Duppen, P.

AU - Vedia, V.

AU - Wadsworth, R.

AU - Walker, P. M.

AU - Warr, N.

AU - Wearing, F.

AU - De Witte, H.

PY - 2019/4/24

Y1 - 2019/4/24

N2 - Gamow-Teller β decay is forbidden if the number of nodes in the radial wave functions of the initial and final states is different. This Δn=0 requirement plays a major role in the β decay of heavy neutron-rich nuclei, affecting the nucleosynthesis through the increased half-lives of nuclei on the astrophysical r-process pathway below both Z=50 (for N>82) and Z=82 (for N>126). The level of forbiddenness of the Δn=1ν1g 9/2 →π0g 7/2 transition has been investigated from the β − decay of the ground state of 207 Hg into the single-proton-hole nucleus 207 Tl in an experiment at the ISOLDE Decay Station. From statistical observational limits on possible γ-ray transitions depopulating the π0g 7/2 −1 state in 207 Tl, an upper limit of 3.9×10 −3 % was obtained for the probability of this decay, corresponding to log⁡ft>8.8 within a 95% confidence limit. This is the most stringent test of the Δn=0 selection rule to date.

AB - Gamow-Teller β decay is forbidden if the number of nodes in the radial wave functions of the initial and final states is different. This Δn=0 requirement plays a major role in the β decay of heavy neutron-rich nuclei, affecting the nucleosynthesis through the increased half-lives of nuclei on the astrophysical r-process pathway below both Z=50 (for N>82) and Z=82 (for N>126). The level of forbiddenness of the Δn=1ν1g 9/2 →π0g 7/2 transition has been investigated from the β − decay of the ground state of 207 Hg into the single-proton-hole nucleus 207 Tl in an experiment at the ISOLDE Decay Station. From statistical observational limits on possible γ-ray transitions depopulating the π0g 7/2 −1 state in 207 Tl, an upper limit of 3.9×10 −3 % was obtained for the probability of this decay, corresponding to log⁡ft>8.8 within a 95% confidence limit. This is the most stringent test of the Δn=0 selection rule to date.

UR - https://www.scopus.com/pages/publications/85065199673

U2 - 10.1016/j.physletb.2019.04.039

DO - 10.1016/j.physletb.2019.04.039

M3 - Article

AN - SCOPUS:85065199673

SN - 0370-2693

VL - 793

SP - 271

EP - 275

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

ER -

Berry TA, Podolyák Z, Carroll RJ, Lică R, Grawe H, Timofeyuk NK et al. Investigation of the Δn = 0 selection rule in Gamow-Teller transitions: The β-decay of ²⁰⁷ Hg. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2019 Apr 24;793:271-275. Epub 2019 Apr 24. doi: 10.1016/j.physletb.2019.04.039

Investigation of the Δn = 0 selection rule in Gamow-Teller transitions: The β-decay of ²⁰⁷ Hg

Abstract

Bibliographical note

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Nuclear Physics Consolidated Grant

Nuclear Physics Consolidated Grant

Cite this

Investigation of the Δn = 0 selection rule in Gamow-Teller transitions: The β-decay of 207 Hg

Abstract

Bibliographical note

Access to Document

Other files and links

Projects

Nuclear Physics Consolidated Grant

Nuclear Physics Consolidated Grant

Cite this

Investigation of the Δn = 0 selection rule in Gamow-Teller transitions: The β-decay of ²⁰⁷ Hg