Identification and decay of182Tl

Bouldjedri, A.; Astier, A.; Béraud, R.; Duffait, R.; Emsallem, A.; Haas, H.

doi:10.1007/bf01284070

Cited by 10 publications

(8 citation statements)

References 4 publications

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“…Alpha decay of 184 Tl was also observed by Schrewe et al [10]. Two α lines with energies 5983 (10) and 6155 (10) keV were observed, in agreement with those reported by [8], but the authors also identified an α line originating from 184 Tl at an energy of 6066 (15) keV.…”

Section: Introductionsupporting

confidence: 86%

“…No half-life information was deduced in this study. Bolshakov et al [14] reported on the observation of 6050 keV α particles from 182 Tl with a half-life of 2.8 (6) s. The authors of [14][15][16] deduced an upper limit of 4%, 5% and 5% respectively for the α-branching ratio of 182 Tl.…”

Section: Introductionmentioning

confidence: 99%

“…For the even mass thallium isotopes with A  186 J p =(2 − ) and J p =(7 + ) have been adopted for the ground state and the excited isomeric state respectively and this sequence is extrapolated down to 182 Tl on systematic grounds [21]. According to [15] a (7 + ) assignment for the 182 Tl parent state with 3.1(10) s half-life is supported by the observed level population up to 8 + in 182 Hg fed by 182 Tl β decay. When moving towards the lighter thallium isotopes with N=99 and lower, a neutron configuration change to [π3s 1 2 n Ä 1h 9 2 ] 4 ,5 --is expected.…”

Section: Introductionmentioning

confidence: 99%

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α-decay study of ${}^{\mathrm{182,184}}$Tl

Beveren¹,

Andreyev²,

Barzakh³

et al. 2016

J. Phys. G: Nucl. Part. Phys.

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α-decay spectroscopy of 182,184 Tl has been performed at the CERN isotope separator on-line (ISOLDE) facility. New fine-structure α decays have been observed for both isotopes. α-decay branching ratios of 0.089(19)%, 0.047 (6)% and 1.22(30)% have been deduced for the (10 − ), (7 + ) and (2 − ) states respectively in 184 Tl and a lower limit of 0.49% for the α-decay branching ratio of 182 Tl. A new half-life of 9.5(2) s for the (2 − ) state in 184 Tl and 1.9(1) s for the low-spin state in 182 Tl has been deduced. Using α-γ coincidence analysis, multiple γ rays were observed de-exciting levels in 178,180 Au fed by 182,184 Tl α decays. The γ transitions connecting these low-lying states in 178,180 Au are essential to sort the data and possibly identify bands from inbeam studies in these isotopes. Owing to the complex fine-structure α decays and limited knowledge about the structure of the daughter nuclei, only partial

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Section: Introductionsupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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α-decay study of ${}^{\mathrm{182,184}}$Tl

Beveren¹,

Andreyev²,

Barzakh³

et al. 2016

J. Phys. G: Nucl. Part. Phys.

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“…First, by correlating the 46-keV ␥ ray in the focal plane with its preceding ␣ decay, it is clear that this transition is only associated with an ␣ peak with an energy of 6403͑15͒ keV. We suggest this corresponds to the previously observed ␣ decay of 182 Tl [24]. We do not have sufficient data to draw further conclusions about low-lying states in 178 Au.…”

Section: A ␣-Decay Studies Of 183 Tlmentioning

confidence: 68%

αdecay and recoil decay tagging studies ofTl183

et al. 2004

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High-spin states in the nucleus 183 Tl have been studied using the recoil decay tagging and recoil tagging techniques. The data have enabled new structures to be identified which are believed to be based on prolate f 7/2 , h 9/2 , and oblate h 9/2 configurations. In addition, the prolate i 3/2 structure has also been extended. The systematics of the newly identified structures will be discussed. The ␣ decay of 183 Tl has also been investigated. Examination of both delayed and prompt ␥ rays in coincidence with the prominent 6333-keV ␣ decay, together with an investigation of the effects of the summing of L electrons, allow assignment of transitions and the construction of tentative low-spin decay schemes for 179 Au and 175 Ir.

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“…In the β-decay study of the same data set [47], a noticeable population of the 4 + 1 (E * = 612-keV) and 4 + 2 (E * = 1124-keV) states in the daughter 182 Hg was observed along with the previously found 6 + and 8 + feedings [45]. This also points to the presence of two long-lived states in 182 Tl: high spin (presumably, 7 + ) and low spin (presumably, I = 3-5).…”

mentioning

confidence: 95%

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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Identification and decay of182Tl

Abstract: -A new activity with a 3s half-life at mass

Cited by 10 publications

References 4 publications

α-decay study of ${}^{\mathrm{182,184}}$Tl

α-decay study of ${}^{\mathrm{182,184}}$Tl

αdecay and recoil decay tagging studies ofTl183

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

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