<i>E</i>0 transitions and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>levels in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Xe</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>136</mml:mn></mml:mrow><mml:mrow /><mm

Pf, Mantica; Be, Zimmerman; Wb, Walters; Heyde, K.

doi:10.1103/physrevc.43.1696

Cited by 10 publications

(9 citation statements)

References 26 publications

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“…of 136 I, respectively, invalidating the arguments of Ref. [53]. The 4269.3 keV experimental level in 136 Xe, identified in this work as 2 − with logf t=6.2, is a good candidate for the π(g 7/2 h 11/2 ) coupling.…”

Section: B 136 Xecontrasting

confidence: 42%

“…of 136 Xe, as proposed in Ref. [53]. This (πg 2 7/2 d 5/2 , νf 7/2 ) I structure is formed when one proton is promoted to the πd 5/2 orbital and is calculated energetically between 0.5 MeV and 1.0 MeV.…”

Section: A 136 Imentioning

confidence: 60%

“…In the past this difference was associated with the proposed (πg 2 7/2 d 5/2 , νf 7/2 ) I g.s. structure of 136 I [53] but this explanation has been challenged in Ref. [25].…”

Section: A Excitations and Transitions In 136 I And 136 Xementioning

confidence: 99%

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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: B 136 Xecontrasting

confidence: 42%

Section: A 136 Imentioning

confidence: 60%

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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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“…A drastic increase in the number of 0+ states in Sm at this energy due to proton two-quasiparticle configurations is predicted in Ref. [8].…”

Section: The Experimental Findings Inmentioning

confidence: 84%

Large fragmentation of the pairing-vibration⊗particle strength inSm145

et al. 1994

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The two-neutron transfer reaction Sm(p, t) Sm was studied at Ev=26 MeV. Angular distributions were measured for 8~b = 5' -50 . The strength of the two neutron monopole pairing phononparticle configuration (n = 1,n+ --1) v2fq/q is identified in odd mass Sm and is found to be quasi-uniformly spread in two narrow groups of as many as 8+5=13 states. This unexpected large fragmentation is compared with the one in the core nucleus Sm and with that from its isotone Nd where the monopole pairing vibration is less fragmented. The couplings with other excitation modes are extracted.PACS number(s): 27.60. +j, 25.40.Hs, 21.10.Hw Atomic nuclei exhibit bosonic and fermionic elementary excitation modes. Due to their underlying fermionic structure, the bosonic modes are only approximately independent and therefore interact with each other and with the fermionic excitations. To reveal these bosonicfermionic couplings one has to study in detail excitations in odd nuclei with emphasis on the observation of the distribution of the respective strengths. Here we report on a study of the coupling of the neutron pairing vibration to single particle states and to other modes in odd nuclei, to provide experimentally established information on its existence and on the magnitude of the relevant matrix elements.In even-even nuclei near closed shells two types of approximately independent pairing vibrations appear: pair removal (n = -2) and pair addition (n = +2) [1].The excitation of a pair removal (addition) phonon decreases (increases) the number of nucleons by two units and the corresponding state is obtained in the nucleus with A -2 (A+ 2) nucleons. As such, a resulting state can be labeled by the number of phonons of each type:(n -2, n -+2) = (n, n+). In odd nuclei, the orbital of the extra nucleon must be indicated, in order to identify a state. As the first orbital in the shell above N=82 is v2f7/2, the ground state of s2 Smss, can be written as (0, 0) v2fr/2 and the monopole pairing vibration (MPV) as (1, 1) t3 v2f7/2The even-even nuclei around the closed shells N = 126 and N = 82 have been central to the study of neutron pairing vibrations through two neutron pickup and stripping reactions (p, t) and (t, p), respectively. In odd nuclei near closed shells such excitations were only observed in the N=83 nucleus i4sNd [2,3]. This paper presents a study of the only other odd nucleus accessible with a stable target, its isotone Sm, a nucleus well studied before in a number of complementary reactions [4]. We find that the MPV is very much fragmented in Sm, a picture which is very different &om that found previously 'Electronic address: trachecomp. tamu. edu for Nd. However, the analysis determines the magnitude of all relevant matrix elements and thus clearly establishes common features between the two cases and also identifies the origin of the differences. It is an interesting example of how the same basic configurations and interactions may lead to such different results.We have investigated the two-neutron pickup reaction i47Sm(p, ...

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“…Indeed, upon inspection of the Nuclear Data Sheets [11], it is clear that the majority of the expected lowest-lying structures have been identified. In the case of the excited 0 + , which owes its origin to the (πd 5/2 ) 2 configuration, an assignment was made in an electron spectroscopy study, following β − decay of 136 I [12]. An E0 transition was observed at an energy of 2582 keV and a level was established at this energy and assigned J π = 0 + .…”

Section: States In 136 Xementioning

confidence: 99%

“No-spin” states and low-lying structures in¹³⁰Xe and¹³⁶Xe

Ross

Peters

Chakraborty

et al. 2015

EPJ Web of Conferences

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Abstract. Inelastic neutron scattering on solid 130 XeF 2 and 136 XeF 2 targets was utilized to populate excited levels in 130 Xe and 136 Xe. When calculating nuclear matrix elements vital to the understanding of double-beta decay, it is important to have a clear understanding of the low-lying level structure of both the parent and daughter nucleus. Of particular relevance to double-beta decay searches are the assignments of 0 + states. We show here that in the case of 130 Xe there are several discrepancies in the adopted level structure. We found that one previous 0 + candidate level (1590 keV) can be ruled out and assigned two additional candidates (2223 and 2242 keV). In 136 Xe we question the previous assignment of a 0 + level at 2582 keV. Excitation function and angular distribution measurements were utilized to make spin and parity assignments of levels and place new transitions.

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E0 transitions andO+levels inXe136

Cited by 10 publications

References 26 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

Large fragmentation of the pairing-vibration⊗particle strength inSm145

“No-spin” states and low-lying structures in¹³⁰Xe and¹³⁶Xe

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E0 transitions andO+levels inXe136

Cited by 10 publications

References 26 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

Large fragmentation of the pairing-vibration⊗particle strength inSm145

“No-spin” states and low-lying structures in130Xe and136Xe

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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

“No-spin” states and low-lying structures in¹³⁰Xe and¹³⁶Xe