The ? decay of tellurium 135 and 137

Samri, M.; Costa, G.; Klotz, G.; Magnac, D.; Seltz, R.; Zirnheld, J.P.

doi:10.1007/bf01493446

Cited by 22 publications

(12 citation statements)

References 24 publications

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“…of 136 Xe of first forbidden hindered type. The β − n-decay of 137 Te was consistent with these conclusions, where several other energies de-exiting the levels at low-spin were observed, although without any spin assignment [24]. For the 738 keV and 578 keV levels, the authors of Ref.…”

Section: Earlier Studies Of 136 Isupporting

confidence: 73%

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New yrast and non-yrast states in I136 and medium-spin structure of I136 and
Lozeva
¹
,
Stefanova
²
,
Naïdja
³

et al. 2018
Phys. Rev. C

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In this article we report on the observation of new yrast and non-yrast states in 136 I, populated in the prompt-γ spectroscopy EXILL campaign at the ILL using both 235 U(n,f) and 241 Pu(n,f) reactions. We propose an extension of the level scheme and interpretation of the new spectroscopic results in comparison to state-of-the-art shell-model calculations. We discuss the role of the proton d 5/2 orbital in the structure of this nucleus with Z=53 and the energy split between the πd 5/2 −πg 7/2 orbitals. We also provide a complete overview of all experimental information about this nucleus and include new data from 252 Cf, 248 Cm fission and β-decay of 136 Te to 136 I. We give a new interpretation of 136 I and its decay to 136 Xe in terms of the influence of the neutron h 9/2 orbital and the Gamow-Teller strength for N =83.

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Section: Earlier Studies Of 136 Isupporting

confidence: 73%

“…For the 738 keV and 578 keV levels, the authors of Ref. [24] proposed spin/parity of (2 − ), while (3 − ) for the 222 keV level. All were understood well when assuming 7/2 − for the g.s.…”

Section: Earlier Studies Of 136 Imentioning

confidence: 99%

New yrast and non-yrast states in I136 and medium-spin structure of I136 and
Lozeva
¹
,
Stefanova
²
,
Naïdja
³

et al. 2018
Phys. Rev. C

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“…3. The experimental results are compared with literature values [23,[29][30][31][32][33][34][35][36][37][38] and five theoretical predictions: finite-range droplet-model FRDM-1995 mass formula [46] with quasiparticle-randomphase approximation (QRPA) (2003) [39] as well as the new version (2019) [40] with FRDM-2012 masses [47], Koura-Tachibana-Uno-Yamada (KTUY) with the second generation of β-decay gross theory (GT2) [41,42], Relativistic Hartree-Bogoliubov (RHB) with the proton-neutron relativistic quasiparticle random-phase approximation (pn-RQRPA) [43], and the energy density functional (DF) with continuum quasiparticle random-phase approximation (CQRPA) [44,45].…”

Section: Nucleusmentioning

confidence: 99%

β -decay half-lives of 55 neutron-rich isotopes beyond the N=82 shell gap

Wu¹,

Nishimura²,

Möller³

et al. 2020

Phys. Rev. C

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“…Nothing was known up to now about high-spin states in the N = 82 nucleus 135 I, but a 135 Te β − -decay study [2] has located an 11/2 + level at 1134 keV above the 135 I πg 7/2 ground state. In the present work, gates on 1134 keV γ-rays identified other strong γ-rays in 135 I, and the full γγγ results established the 135 I level scheme presented in Fig.…”

mentioning

confidence: 98%

Few-valence-particle excitations around doubly magic 132Sn

et al. 1997

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Prompt γ-ray cascades in neutron-rich nuclei around doubly-magic 132 Sn have been studied using a 248 Cm fission source. Yrast states located in the N = 82 isotones 134 Te and 135 I are interpreted as valence proton and neutron particlehole core excitations with the help of shell model calculations employing empirical nucleon-nucleon interactions from both 132 Sn and 208 Pb regions. 21.60.Cs; 23.20.Lv; 25.85.Ca; 27.60.+j What we know about the 132 Sn nucleus and its neighbors comes mainly from β − decay studies of short-lived radionuclides produced in fission of actinides; consequently our knowledge about simple excitation modes, single particle energies, effective nucleon-nucleon interactions and other basic properties in this region is far from complete. The large multidetector γ-ray arrays, which can separate the prompt γ-ray cascades within a single fission product nucleus (of moderate yield) from the bulk of prompt γ-rays, have now opened new prospects for detailed studies of yrast excitations in 132 Sn and the few valence particle nuclei around it. The spectroscopy of 132 Sn and its neighbors should in many ways resemble that of the well studied nuclei around Z = 82, N = 126 208 Pb, and comparisons of experimental data from these and other magic regions would help the development of a "universal" theoretical description of shell model properties. PACS:The measurements reported here were performed at Eurogam II using a 248 Cm source which delivered ∼6.3x10 4 fissions/sec. Eurogam II at the time consisted of 52 escapesuppressed spectrometers incorporating 124 Ge detector elements, here augmented by four LEPS spectrometers; in total, 2x10 9 threefold or higher-fold coincidence events were recorded. The excellent quality and high selectivity of the triple coincidence γ-ray data made it possible to identify even weak transitions in the nuclei of interest extending over the Z = 50−54, N = 80−84 range. Cross coincidences observed between γ-rays from partner light and heavy fission products were often of key importance in establishing isotopic assignments for previously unknown cascades; in other cases, some On leave from: Institute of Nuclear Physics, Kracow, Poland overlap with the γ-rays known from β-decay provided vital first clues. The findings for only two of these nuclei -the twoand three-proton N = 82 isotones 134 Te and 135 I -are presented here, but results for other fission products around 132 Sn will also be forthcoming.In the two-proton nucleus 134 Te, many members of the πg 7/2 2 , πg 7/2 d 5/2 and πg 7/2 h 11/2 multiplets are known from 134 Sb β − decay studies, especially the recent work of Omtvedt et al. [1]. The present fission product measurements identified two dominant high-energy γ-rays feeding the 1691 keV πg 7/2 2 6 + state in 134 Te, one the 2322 keV 9 − →6 + E3 transition known from β-decay [1], the other a 2866 keV γ-ray from a 134 Te level at 4557 keV. Gating on this 2866 keV γ-ray revealed many new 134 Te γ-rays, and the full γγγ results established the level sequence above 4557 keV ...

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The ? decay of tellurium 135 and 137

Cited by 22 publications

References 24 publications

New yrast and non-yrast states in I136 and medium-spin structure of I136 and
Lozeva
¹
,
Stefanova
²
,
Naïdja
³

et al. 2018
Phys. Rev. C

New yrast and non-yrast states in I136 and medium-spin structure of I136 and
Lozeva
¹
,
Stefanova
²
,
Naïdja
³

et al. 2018
Phys. Rev. C

β -decay half-lives of 55 neutron-rich isotopes beyond the N=82 shell gap

Few-valence-particle excitations around doubly magic 132Sn

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The ? decay of tellurium 135 and 137

Cited by 22 publications

References 24 publications

New yrast and non-yrast states in I136 and medium-spin structure of I136 and Lozeva1, Stefanova2, Naïdja3 et al. 2018Phys. Rev. C

New yrast and non-yrast states in I136 and medium-spin structure of I136 and Lozeva1, Stefanova2, Naïdja3 et al. 2018Phys. Rev. C

β -decay half-lives of 55 neutron-rich isotopes beyond the N=82 shell gap

Few-valence-particle excitations around doubly magic 132Sn

Contact Info

Product

Resources

About

New yrast and non-yrast states in I136 and medium-spin structure of I136 and
Lozeva
¹
,
Stefanova
²
,
Naïdja
³

et al. 2018
Phys. Rev. C

New yrast and non-yrast states in I136 and medium-spin structure of I136 and
Lozeva
¹
,
Stefanova
²
,
Naïdja
³

et al. 2018
Phys. Rev. C