Evidence for Predicted Level Crossings in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mrow><mml:mover><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mi>̃</mml:mi></mml:mrow></mml:mover></mml:mrow></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi>h</mml:mi></mml:mrow><mml:mrow><mml:mfrac><mml:mrow><mml:mn>9</mml:mn></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:mfrac></mml:mrow></mml:msub></mml:mrow><mml:mo>⊗</mml:mo><mml:mrow><mml:mrow><mml:mover><

Kreiner, A. J.; Baktash, C.; Bermúdez, G. Garcı́a; Mariscotti, M.A.J.

doi:10.1103/physrevlett.47.1709

Cited by 45 publications

(23 citation statements)

References 11 publications

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“…The allocation of the states in the odd-odd thallium isotopes within each full multiplet will primarily depend on the specific proton-neutron residual interaction in these [j p ⊗ j n ]J π configurations. This has been thoroughly discussed by several authors [6,[29][30][31][32]. The two lowest states in Fig.…”

Section: Discussionmentioning

confidence: 72%

“…The coupling of this unpaired neutron and unpaired proton (normal as well as intruder) results in multiplets of states from which some members can become isomeric. This is further complicated by a relatively small energy spacing between these multiplet states and/or the collective bands built on top of the intruder configurations (see, e.g., [6]). This results in complex decay schemes and low-energy, highly converted transitions must be reliably identified and located in the decay schemes.…”

Section: Published By the American Physical Society Under The Terms Omentioning

confidence: 99%

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Internal decay of the(10−)intruder state inTl184

et al. 2015

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Decay spectroscopy of 184 Tl has been performed at the CERN Isotope Separator On-Line (ISOLDE) facility. An excitation energy of 506.1(1) keV and a half-life of 47.1(7) ms of the intruder based (10 − ) state have been extracted. The internal decay characteristics of this state are determined and discussed, extending the systematics of such states in the even-mass thallium nuclei below neutron midshell at N = 104. The retardation factors of the isomeric M2 and E3 transitions are deduced and compared with retardation factors in neighboring odd-mass and even-mass thallium isotopes. The new information is combined with a review of hindered and unhindered α-decay data of [187][188][189][190][191][192] Bi populating levels in daughter nuclei [183][184][185][186][187][188] Tl and supports the interpretation of the intruder character of the (10 − ) state in 184 Tl.

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Section: Discussionmentioning

confidence: 72%

Section: Published By the American Physical Society Under The Terms Omentioning

confidence: 99%

Internal decay of the(10−)intruder state inTl184

et al. 2015

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“…Spectroscopic studies of the odd-odd Tl and Au isotopes are difficult, as even at low excitation energy the level density can be relatively high owing to the coupling of different valence protons and neutrons. Such coupling results in a multitude of rather closely spaced, often isomeric, configurations which have been observed in these nuclei; see, e.g., the previous studies of the heavier odd-odd nuclei [188][189][190][191][192][193][194][195][196][197][198][199][200] Tl [31][32][33]. Moreover, an inspection of the Nilsson diagrams in the region of interest (Fig.…”

Section: -6mentioning

confidence: 99%

β-delayed fission andαdecay of178Tl

Liberati¹,

Andreyev²,

Antalic³

et al. 2013

Phys. Rev. C

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ReuseItems deposited in White Rose Research Online are protected by copyright, with all rights reserved unless indicated otherwise. They may be downloaded and/or printed for private study, or other acts as permitted by national copyright laws. The publisher or other rights holders may allow further reproduction and re-use of the full text version. This is indicated by the licence information on the White Rose Research Online record for the item. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request.PHYSICAL REVIEW C 88, 044322 (2013) A detailed nuclear-decay spectroscopy study of the neutron-deficient isotope 178 Tl has been performed using the highly selective Resonance Ionization Laser Ion Source and ISOLDE mass separator (CERN), which allowed a unique isobarically pure beam of 178 Tl to be produced. The first identification of the β-delayed fission of this isotope was made and its probability P βDF ( 178 Tl) = 0.15(6)% was determined. An asymmetric fission fragment mass distribution of the daughter isotope 178 Hg (populated by the β decay of 178 Tl) was deduced based on the measured fission fragment energies. The fine-structure α-decay pattern of 178 Tl allowed the low-energy states in the daughter nucleus 174 Au to be studied.

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“…In particular, long-lived high-spin intruder states of presumably [πlh 9/2 × ν1i 13/2 ] 7 − −10 − origin are well known in the odd-odd 184−200 Tl isotopes, and their tentative spin-parity assignments are based on decay spectroscopy experiments [2,10]. So far, laser spectroscopy studies of these isomers have been restricted to 186 Tl only [7].…”

Section: Introductionmentioning

confidence: 99%

“…The region of the neutron-deficient isotopes near the proton shell closure at Z = 82 has drawn considerable interest as it exhibits a clear manifestation of shape coexistence in nuclei ( [1,2]; recent work has been summarized in Ref. [3]).…”

Section: Introductionmentioning

confidence: 99%

Changes in mean-squared charge radii and magnetic moments of Tl179–184 measured by in-source laser spectroscopy

Barzakh¹,

Andreyev²,

Cocolios³

et al. 2017

Phys. Rev. C

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Hyperfine structure and isotope shifts have been measured for the ground and isomeric states in the neutrondeficient isotopes [179][180][181][182][183][184] Tl using the 276.9-nm transition. The experiment has been performed at the CERNIsotope Separator On-Line facility using the in-source resonance-ionization laser spectroscopy technique. Spins for the ground states in 179,181,183 Tl have been determined as I = 1/2. Magnetic moments and changes in the nuclear mean-square charge radii have been deduced. By applying the additivity relation for magnetic moments of the odd-odd Tl nuclei the leading configuration assignments were confirmed. A deviation of magnetic moments for isomeric states in 182,184 Tl from the trend of the heavier Tl nuclei is observed. The charge radii of the ground states of the isotopes [179][180][181][182][183][184] Tl follow the trend for isotonic (spherical) lead nuclei. The noticeable difference in charge radii for ground and isomeric states of 183,184 Tl has been observed, suggesting a larger deformation for the intruder-based 9/2 − and 10 − states compared to the ground states. An unexpected growth of the isomer shift for 183 Tl has been found.

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Evidence for Predicted Level Crossings inπ̃h92⊗<

Cited by 45 publications

References 11 publications

Internal decay of the(10−)intruder state inTl184

Internal decay of the(10−)intruder state inTl184

β-delayed fission andαdecay of178Tl

Changes in mean-squared charge radii and magnetic moments of Tl179–184 measured by in-source laser spectroscopy

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