Nuclear Data Sheets for A = 210

Basunia, M. S.

doi:10.1016/j.nds.2014.09.004

Cited by 78 publications

(23 citation statements)

References 324 publications

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“…[6]. On the other hand, the 1870(10)-keV state, uniquely identified in several earlier studies as being the 3 − level [4], was also observed here. The weak, 1073.4-keV γ ray feeding the 799.6-keV, 2 + state in 210 Pb was clearly seen in the data from all the experiments described in Sec.…”

Section: B Identification Of ν G 9/2 I 11/2 Statessupporting

confidence: 86%

“…The existence of an 8 + isomer at an excitation energy of about 1275 keV, with a half-life of 201(17) ns, has been well established in previous studies [4], where the state has been associated with the stretched ν(g 9/2 ) 2 neutron configuration. Its decay has been delineated and found to proceed via a sequence of levels with the same ν(g 9/2 ) 2 character, including the 6 + , 49(6)-ns isomer.…”

Section: A Reinvestigation Of the 8 + Isomer Decaysupporting

confidence: 54%

“…Its decay has been delineated and found to proceed via a sequence of levels with the same ν(g 9/2 ) 2 character, including the 6 + , 49(6)-ns isomer. However, because of their low energies, the 8 + → 6 + and 6 + → 4 + transitions had thus far only been determined with large uncertainties that translated into a poor determination of the excitation energies, not only for the two levels involved, but also for all higher-lying states [4]. As listed in Table I, the present data enabled the more precise identification of the 80.2(2)-and 97.6(1)-keV γ rays as the isomeric transitions from the 8 + and 6 + long-lived states, respectively, herewith providing the desired more precise energy determinations that remove the 3-keV uncertainty adopted previously.…”

Section: A Reinvestigation Of the 8 + Isomer Decaymentioning

confidence: 99%

“…The results of previous experimental investigations of 210 Pb have been reviewed and summarized in Ref. [4]. These were based mostly on a study of 210 Tl β decay [5] that, together with data from (t, p) [6] and (t, pγ ) [7] reactions, established the low-spin part of the level scheme.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Two-neutron and core-excited states in Pb210 : Tracing E3 collectivity and evidence for a new β -decaying isomer in
Broda
¹
,
Iskra
²
,
Janssens
³

et al. 2018
Phys. Rev. C
16
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3
1
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Yrast and near-yrast levels up to an I = 17h spin value and a 6-MeV excitation energy have been delineated in the "two-neutron" 210 Pb nucleus following deep-inelastic reactions involving 208 Pb targets and a number of heavy-ion beams at energies ∼25% above the Coulomb barrier. The level scheme was established on the basis of multifold prompt and delayed coincidence relationships measured with the Gammasphere array. In addition to the previously known states, many new levels were identified. For most of the strongly populated states, spin-parity assignments are proposed on the basis of angular distributions. The reinvestigation of the ν(g 9/2 ) 2 , 8 + isomeric decay results in the firm identification of the low-energy E2 transitions involved in the 8 + → 6 + → 4 + cascade, and in a revised 6 + level half-life of 92(10) ns, nearly a factor of 2 longer than previously measured. Among the newly identified states figure spin I = 4-10h levels associated with the νg 9/2 i 11/2 multiplet, as well as yrast states involving νg 9/2 j 15/2 , νi 11/2 j 15/2 , and ν(j 15/2 ) 2 neutron couplings. The highest-spin excitations are understood as 1p-1h core excitations and the yrast population is found to be fragmented to the extent that levels of spin higher than I = 17h could not be reached. Four E3 transitions are present in the 210 Pb yrast decay; three of these involve the g 9/2 → j 15/2 octupole component, as reflected in the 21(2) and > 10 Weisskopf unit enhancements of the B(E3) rates of the first two. The fourth, 16 + → 13 − E3 transition corresponds to the 3 − core octupole excitation built on the νi 11/2 j 15/2 state, in analogy to a similar E3 coupling to the νj 15/2 level in 209 Pb. Shell-model calculations performed for two-neutron states and 1p-1h 208 Pb core excitations are in good agreement with the data. Evidence was found for the existence of a hitherto unknown high-spin β-decaying isomer in 210 Tl. Shell-model calculations of the 210 Tl levels suggest the possibility of a 11 + long-lived, β-decaying state, and the delayed yields observed in various reactions fit rather well with a 210 Tl assignment.

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Section: B Identification Of ν G 9/2 I 11/2 Statessupporting

confidence: 86%

Section: A Reinvestigation Of the 8 + Isomer Decaysupporting

confidence: 54%

Section: A Reinvestigation Of the 8 + Isomer Decaymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Two-neutron and core-excited states in Pb210 : Tracing E3 collectivity and evidence for a new β -decaying isomer in
Broda
¹
,
Iskra
²
,
Janssens
³

et al. 2018
Phys. Rev. C
16
0
3
1
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show abstract

“…Many experimental complementary methods have been used to disentangle the properties over such a large interval. These nuclei are extensively covered in the Nuclear Data Sheet reviews for A = 190 [73], A = 192 [74], A = 194 [75], A = 196 [76], A = 198 [77], A = 200 [78], A = 202 [79], A = 204 [80], A = 206 [81], A = 208 [82], A = 210 [83], and span the region we concentrate on in the present paper.…”

Section: Experimental Data: Situation In the Po Nucleimentioning

confidence: 99%

Nuclear shape coexistence in Po isotopes: An interacting boson model study

García-Ramos

Heyde

2015

Phys. Rev. C

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Background:The lead region, Po, Pb, Hg, and Pt, shows up the presence of coexisting structures having different deformation and corresponding to different particle-hole configurations in the shell-model language. Purpose: We intend to study the importance of configuration mixing in the understanding of the nuclear structure of even-even Po isotopes, where the shape coexistence phenomena are not clear enough. Method: We study in detail a long chain of polonium isotopes, [190][191][192][193][194][195][196][197][198][199][200][201][202][203][204][205][206][207][208] Po, using the interacting boson model with configuration mixing (IBM-CM). We fix the parameters of the Hamiltonians through a least-squares fit to the known energies and absolute B(E2) transition rates of states up to 3 MeV. Results: We obtained the IBM-CM Hamiltonians and we calculate excitation energies, B(E2)'s, electric quadrupole moments, nuclear radii and isotopic shifts, quadrupole shape invariants, wave functions, and deformations. Conclusions: We obtain a good agreement with the experimental data for all the studied observables and we conclude that shape coexistence phenomenon is hidden in Po isotopes, very much as in the case of the Pt isotopes.

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Radioactive heat production of six geologically important nuclides

Ruedas

2017

Geochem Geophys Geosyst

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Heat production rates for the geologically important nuclides 26Al, 40K, 60Fe, 232Th, 235U, and 238U are calculated on the basis of recent data on atomic and nuclear properties. The revised data differ by several percent from some older values but indicate that more recent analyses converge toward values with an accuracy sufficient for all common geoscience applications, although some possibilities for improvement still remain, especially in the case of 40K and with regard to the determination of half‐lives. A Python script is provided for calculating heat production (https://github.com/trg818/radheat).

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Nuclear Data Sheets for A = 210

Cited by 78 publications

References 324 publications

Two-neutron and core-excited states in Pb210 : Tracing E3 collectivity and evidence for a new β -decaying isomer in
Broda
¹
,
Iskra
²
,
Janssens
³

et al. 2018
Phys. Rev. C
16
0
3
1
View full text Add to dashboard Cite

Two-neutron and core-excited states in Pb210 : Tracing E3 collectivity and evidence for a new β -decaying isomer in
Broda
¹
,
Iskra
²
,
Janssens
³

et al. 2018
Phys. Rev. C
16
0
3
1
View full text Add to dashboard Cite

Nuclear shape coexistence in Po isotopes: An interacting boson model study

Radioactive heat production of six geologically important nuclides

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Nuclear Data Sheets for A = 210

Cited by 78 publications

References 324 publications

Two-neutron and core-excited states in Pb210 : Tracing E3 collectivity and evidence for a new β -decaying isomer in Broda1, Iskra2, Janssens3 et al. 2018Phys. Rev. C16031View full textAdd to dashboardCite

Two-neutron and core-excited states in Pb210 : Tracing E3 collectivity and evidence for a new β -decaying isomer in Broda1, Iskra2, Janssens3 et al. 2018Phys. Rev. C16031View full textAdd to dashboardCite

Nuclear shape coexistence in Po isotopes: An interacting boson model study

Radioactive heat production of six geologically important nuclides

Contact Info

Product

Resources

About

Two-neutron and core-excited states in Pb210 : Tracing E3 collectivity and evidence for a new β -decaying isomer in
Broda
¹
,
Iskra
²
,
Janssens
³

et al. 2018
Phys. Rev. C
16
0
3
1
View full text Add to dashboard Cite

Two-neutron and core-excited states in Pb210 : Tracing E3 collectivity and evidence for a new β -decaying isomer in
Broda
¹
,
Iskra
²
,
Janssens
³

et al. 2018
Phys. Rev. C
16
0
3
1
View full text Add to dashboard Cite