Evidence for particle-core coupling in the 125Te nucleus

Kerek, A.; Kownacki, J.; Marelius, A.; Pihl, J.

doi:10.1016/0375-9474(72)91052-4

Cited by 22 publications

(18 citation statements)

References 19 publications

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“…The 601-555-378 triple coincidence is observed in our data set, meaning that the three levels built on the 3/2 + 1 state at 35.5 keV [set (i)] are populated in the fusionfission reactions. No other γ lines have been detected in coincidence with these three transitions, thus we do not confirm the existence of the 805-and 195-keV transitions which were placed above this structure because they fit the differences in energy between states established from coincidence relationships [33]. Hence the two highest-spin states [set (iii)] only decay to the levels of set (ii).…”

Section: Level Scheme Of 130 Tementioning

confidence: 70%

“…Moreover, our level scheme includes another doublet at 696 and 697 keV, the latter γ line being located between the 350-and the 703-keV transitions. Noteworthy is the fact that this doublet was not suspected in the previous work [33], thus the 703-keV transition was put in a wrong place.…”

Section: Level Scheme Of 130 Tementioning

confidence: 88%

“…We have gathered in Table VII the properties of all the transitions assigned to 130 Te from this work. Medium-spin states of 125 Te had been investigated using the 124 Sn(α, 3nγ) reaction and in-beam techniques (excitation functions, γ − γ coincidences and γ-ray angular distributions) [33]. This study led to the identification of three sets of levels, (i) three levels built on the 3/2 + 1 state at 35.5 keV, (ii) three levels built on the 11/2 − 1 state at 144.8 keV, (iii) two states decaying to both structures.…”

Section: Level Scheme Of 130 Tementioning

confidence: 99%

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High-spin structures of 124−131Te: Competition of proton- and neutron-pair breakings

et al. 2014

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The 124−131 Te nuclei have been produced as fission fragments in two fusion reactions induced by heavy-ions ( 12 C + 238 U at 90 MeV bombarding energy and 18 O + 208 Pb at 85 MeV) and studied with the Euroball array. Their high-spin level schemes have been extended to higher excitation energy from the triple γ-ray coincidence data. The γ − γ angular correlations have been analyzed in order to assign spin and parity values to many observed states. Moreover the half-lives of isomeric states have been measured from the delayed coincidences between the fission-fragment detector SAPhIR and Euroball, as well as from the timing information of the Ge detectors. The behaviors of the yrast structures identified in the present work are first discussed in comparison with the general features known in the mass region, particularly the breakings of neutron pairs occupying the νh 11/2 orbit identified in the neighboring Sn nuclei. The experimental level schemes are then compared to shell-model calculations performed in this work. The analysis of the wave functions shows the effects of the proton-pair breaking along the yrast lines of the heavy Te isotopes.

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Section: Level Scheme Of 130 Tementioning

confidence: 70%

Section: Level Scheme Of 130 Tementioning

confidence: 88%

Section: Level Scheme Of 130 Tementioning

confidence: 99%

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High-spin structures of 124−131Te: Competition of proton- and neutron-pair breakings

et al. 2014

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“…Detailed information on the level structures upto excitation energy of 700 keV has been sought through gamma-ray and conversion electron spectroscopy following beta decay of the long-lived (Ø ½ ¾ = 2.76y) source ½¾ Sb [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. Supporting information, albeit with lesser precision, over this region has come from a variety of other techniques [1,2,[23][24][25][26][27][28], e.g. ½¾ I EC decay, radiative neutron capture, Coulomb excitation,´« ÜÒµ in-beam experiments, particle transfer reaction studies etc.…”

Section: Introductionmentioning

confidence: 99%

Beta decay of 125Sb and level structures in 125Te

1999

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The decay of 2.76y ½¾ Sb to levels of ½¾ Te has been studied using an HPGe detector for gamma-ray and a mini orange electron spectrometer for conversion electron measurements. We identify 38 transitions in this decay, including 13 gamma rays and 4 conversion electron lines being reported for the first time. New results also include E1 multipolarity assignments to 3 newly observed transitions and Å-shell conversion coefficient for the 109 keV M4 transition. A revised ½¾ Te level scheme is constructed using Ritz combination principle. While confirming the existence of 10 well established levels below 700 keV excitation, we introduce 3 other levels at 402.0, 538.6 and 652.9 keV. Interpretation of the observed levels in terms of various theoretical approaches is briefly discussed. The newly introduced 538.6 keV (1/2 · ) and 652.9 keV (3/2 · ) levels are seen as the two missing members of the´× ½ ¾ ª ¾ · µ and´ ¿ ¾ ª ¾ · µ sextuplet in the quasiparticle-phonon coupling scheme.

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“…For the (e, 3 n) reaction it is necessary to consider contributions from a number of transitions. The information from [11] was used for this purpose. Since the v-ray yields were determined from spectra from the Ge-detectors placed at _+ 90 ~ corrections for angular distributions were performed using angular distribution coefficients from [11,12].…”

Section: Iii1 Excitation Functionsmentioning

confidence: 99%

Non-equilibrium neutron emission in ?-induced reactions on124Sn

Arnell

Mattsson

Roth

et al. 1988

Z. Physik A - Atomic Nuclei

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Neutron time-of-flight spectra were measured in coincidence with y-rays characteristic for the xn (x=2, 3, 4, 5) fusion-like products in reactions of 35-57 MeV a-particles with 124Sn. Additional information was obtained from excitation function and 7-multiplicity measurements. The neutron energy spectra for a specific x n channel at high bombarding energies clearly show the presence of nonequilibrium neutron emission. The spectra are parameterized in terms of emission from a slow equilibrated and a fast moving source. The fast moving source has a velocity close to the beam velocity indicating a close relationship between the movement of the projectile and the neutron emission.

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Evidence for particle-core coupling in the 125Te nucleus

Cited by 22 publications

References 19 publications

High-spin structures of 124−131Te: Competition of proton- and neutron-pair breakings

High-spin structures of 124−131Te: Competition of proton- and neutron-pair breakings

Beta decay of 125Sb and level structures in 125Te

Non-equilibrium neutron emission in ?-induced reactions on124Sn

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