High spin structures of 122Xe

Serris, M.; Papadopoulos, C.; Vlastou, R.; Kalfas, C. A.; Kossionides, S.; Fotiades, N.; Harissopulos, S.; Beausang, C. W.; Joyce, Malcolm J.; Paul, E. S.; Bentley, M. A.; Araddad, S.Y.; Simpson, John; Sharpey‐Schafer, J. F.

doi:10.1007/s002180050274

Cited by 12 publications

(5 citation statements)

References 21 publications

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“…[40], and it is mainly the coupling to this K = 2 band which results in bands 4 and 5. This assignment appears consistent with the suggestion that these bands in 121 Xe [25] and 125 Xe [27] are built on a νh 11/2 configuration coupled to the γ vibrational band of the even-even core [26]. With this assignment, these bands cannot be described in the present cranking approach.…”

Section: Favored Aligned Statessupporting

confidence: 88%

“…The structure of the Xe isotopes, other than that of 123 Xe, has been studied in great detail [10,12,22,[25][26][27] and shape evolution with increasing rotational frequency has been reported. In addition, highly deformed rotational bands, extending up to spins around I ∼ 60, have been observed to coexist along with "normally" de-formed bands in the spin range I = 20-30 in 124,125,126 Xe [12,22,27].…”

Section: Introductionmentioning

confidence: 99%

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Evolution of collective and noncollective structures in Xe123

et al. 2020

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An experiment involving a heavy-ion induced fusion-evaporation reaction was carried out where high-spin states of 123 Xe were populated in the 80 Se(48 Ca, 5n) 123 Xe reaction at 207 MeV beam energy. Gamma-ray coincidence events were recorded with the Gammmasphere Ge detector array. The previously known level scheme was confirmed and enhanced with the addition of five new band structures and several inter-band transitions. Cranked Nilsson-Strutinsky (CNS) calculations were performed and compared with the experimental results in order to assign configurations to the bands.

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Section: Favored Aligned Statessupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Evolution of collective and noncollective structures in Xe123

et al. 2020

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“…The isotopes 114−122 Xe (60 N 68) can be produced with relatively large cross sections in heavy-ion fusion evaporation reactions and consequently have been well studied in γ -ray spectroscopy experiments, with multiple high-spin rotational bands being observed in many of these nuclei (see, for example, Refs. [17][18][19][20][21][22][23][24][25][26][27]). For N < 60, the xenon isotopes can only be produced in fusion-evaporation reaction channels that involve neutron evaporation, and consequently the cross sections become increasingly small as N decreases.…”

Section: Previous Studies Of Odd-a Xenon Isotopesmentioning

confidence: 99%

Delayed or absent π(h11/2)2 alignment in Xe111

Capponi¹,

Smith²,

Ruotsalainen³

et al. 2020

Phys. Rev. C

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Excited states have been identified in the very neutron-deficient N = Z + 3 nucleus 111 Xe for the first time, using the 58 Ni(58 Ni, αn) heavy-ion fusion-evaporation reaction. γ-ray transitions have been unambiguously assigned to 111 Xe by correlation with the characteristic 111 Xe → 107 Te → 103 Sn α-decay chain using the method of recoil-decay tagging. Inspection of γ γ-coincidence data has shown that five of the transitions form a rotational-like sequence. Excitation-energy systematics suggest that the sequence could be the favored signature partner of a band built on an h 11/2 neutron. Aligned angular momenta of states in the band have been compared to analogous bands in neighboring xenon isotopes. The aligned angular momenta for the 111 Xe band are constant over the range of observed rotational frequencies, suggesting that the first π (h 11/2) 2 alignment is either delayed or absent. It is speculated that the alignment of h 11/2 protons in the presence of neutrons in near-identical h 11/2 orbitals may be affected by neutron-proton interactions or by the onset of octupole correlations.

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“…The B(E2) values derived from these measurements reveal a large increase in deformation compared with B(E2) measurements in the ground-state sequences of both the neutron-deficient tellurium and tin isotopes, between 2 and 3 times larger. Figure 6(a) shows the excitation energy ratios of the first two excited states in the ground-state sequences of the most neutron-deficient even-mass Xe isotopes [5,[37][38][39][40][41] and in the νh 11/2 bands of the odd-mass isotopes [11,42] (relative to the excitation energy of the bandhead).…”

Section: A the νH 11/2 Isomeric Statementioning

confidence: 99%

“…FIG.6. (a) Excitation energy ratios of the first two excited states in the ground-state even-mass xenon isotopes[5,[37][38][39][40][41] (white circles) and the νh 11/2 bands of the odd-mass isotopes (solid circles), relative to the 11/2 − state[11,42]. (b) B(E2) values for the 2 + → 0 + decays in even-mass xenon isotopes[33][34][35] (white circles) and the 15/2 − → 11/2 − decays in the odd-mass isotopes (solid circles).…”

mentioning

confidence: 99%

Isomer-tagged differential-plunger measurements in54113Xe

Procter¹,

Cullen²,

Taylor³

et al. 2013

Phys. Rev. C

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The 278-keV M2 γ decay from the νh 11/2 isomeric state in 113 Xe has been observed for the first time using the recoil-isomer tagging technique. The half-life of the isomer has been measured to be 6.9(3) μs. The derived B(M2) value is in agreement with the trend of systematic measurements of M2 transition strengths in neutron-deficient tellurium and tin isotopes. The lifetime of the first excited state in the νh 11/2 band has been measured using the recoil distance Doppler-shift method. The extracted B(E2) value has been compared to theoretical CD-Bonn calculations and recent lifetime measurements in 109 Te. This comparison of B(E2) values has been used to shed light on the possible influence of collective degrees of freedom on M2 transition strengths in the most neutron-deficient xenon nuclei. The νh 11/2 band is deduced to have a degree of deformation comparable with the ground-state bands of the even-mass xenon isotopes. However, the value deduced in this work indicates a loss of collective behavior when compared with the lower-mass 109 Te. This result suggests that, while changes in deformation may be partly responsible for the observed trend in B(M2) values for increasing Z, other effects may also be present.

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High spin structures of 122Xe

Cited by 12 publications

References 21 publications

Evolution of collective and noncollective structures in Xe123

Evolution of collective and noncollective structures in Xe123

Delayed or absent π(h11/2)2 alignment in Xe111

Isomer-tagged differential-plunger measurements in54113Xe

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