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-BrennanM. 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

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10.1016/j.physletb.2019.04.039

1-s2.0-S0370269319302722-main
© 2019 The Authors.
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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 3.9×10 −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",

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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.

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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