Investigation of the Δn = 0 selection rule in Gamow-Teller transitions: The β-decay of 207 Hg
(2019) In Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 793. p.271-275- 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... (More)
- 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 logft>8.8 within a 95% confidence limit. This is the most stringent test of the Δn=0 selection rule to date. © 2019 The Authors (Less)
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- author
- Berry, Tom A. ; Fahlander, Claes LU and De Witte, Hilde
- author collaboration
- organization
- publishing date
- 2019
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
- volume
- 793
- pages
- 5 pages
- publisher
- Elsevier
- external identifiers
-
- scopus:85065199673
- ISSN
- 0370-2693
- DOI
- 10.1016/j.physletb.2019.04.039
- language
- English
- LU publication?
- yes
- additional info
- Export Date: 20 May 2019
- id
- cd90039d-a0a1-4c42-a258-62d65278b3f1
- date added to LUP
- 2019-05-20 12:30:15
- date last changed
- 2022-04-26 00:05:22
@article{cd90039d-a0a1-4c42-a258-62d65278b3f1, 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 logft>8.8 within a 95% confidence limit. This is the most stringent test of the Δn=0 selection rule to date. © 2019 The Authors}}, author = {{Berry, Tom A. and Fahlander, Claes and De Witte, Hilde}}, issn = {{0370-2693}}, language = {{eng}}, pages = {{271--275}}, publisher = {{Elsevier}}, series = {{Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics}}, title = {{Investigation of the Δn = 0 selection rule in Gamow-Teller transitions: The β-decay of 207 Hg}}, url = {{http://dx.doi.org/10.1016/j.physletb.2019.04.039}}, doi = {{10.1016/j.physletb.2019.04.039}}, volume = {{793}}, year = {{2019}}, }