Rotational-vibrational band structure in 155Sm

Schreckenbach, K.; Namenson, A.I.; Davidson, W.F.; Egidy, T. von; Börner, H. G.; Pinston, J.A.; Smither, R.K.; Warner, D.D.; Casten, R. F.; Stelts, M.L.; White, D.H.; Stöffl, W.

doi:10.1016/0375-9474(82)90058-6

Cited by 24 publications

(13 citation statements)

References 23 publications

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“…This agrees with the weak population of the 337 keV level in single-neutron transfer reaction [6]. The spin assignments are taken from [3]. 4-5) the !it-level is expected to de-excite to the {-, 128 keV state, which further decays via the 74.7 keV photon.…”

Section: The Asssm Nucleussupporting

confidence: 76%

Low-lying levels in the nuclei151Nd and155Sm

et al. 1984

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Decay properties of excited states in the lS~Nd and ~SSSm nuclei produced by 10 MeV deuterons have been investigated with in-beam gamma-gamma-coincidence equipment during bombardment of the XS~ and aS4Sm targets. The results largely confirm the data obtained earlier for these nuclei. The (d, py) reaction channel favors population of odd-parity low-spin levels, whose energies follow the rule of regular band structure for well-deformed nuclei. The level schemes are interpreted with calculations using an axial particle-rotor model with a Woods-Saxon potential.

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Section: The Asssm Nucleussupporting

confidence: 76%

Low-lying levels in the nuclei151Nd and155Sm

et al. 1984

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“…Furthermore, as illustrated in Fig. 4, the observed growth rate for this line matches quite well the computed curve for growth of a 22.4-min activity from a 48-s activity; 3. the prominent 725-and 778-keV γ-rays can be placed in a consistent fashion into the level scheme of 1S5 Sm proposed by SMITHER et al [9] from studies of the 154 Sm(n, 7)-reaction.…”

Section: γ-Ray Measurementsmentioning

confidence: 57%

“…The I" and Nilsson model assignments to the levels in l55 Sm are those proposed by SMITHER et al[9].1S5 Sm which might also be populated in the ¿¡"-decay of 155 Pm. The prominent |3~-decay branch into the spin-3/2 member of the 3/2"[532] band at 778 keV in 155 Sm is analogous to that in the decay of 153 Pm [10].…”

mentioning

confidence: 60%

“…(In obtaining this value, a correction was made for the 155 Sm initially present as a contaminant in the Pm fraction following the separation.) From the levels assigned to 155 Sm by SMITHER et al [9], together with the decay modes they established for these levels, we can quite straightforwardly fit the γ-rays shown in Table 1 into a decay scheme for lss Pm, as illustrated in Fig. 5.…”

Section: γ-Ray Measurementsmentioning

confidence: 99%

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Identification of a New Isotope,¹⁵⁵Pm, Produced in ²⁵²Cf Fission

et al. 1982

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A new isotope 1 s ' Pm has been identified using the Idaho ESOL facility. This isotope was identified in the Pm fraction separated using high-performance liquid chromatography from gross fission products resulting from spontaneous fission in 2!î Cf. Five γ-rays could be assigned to this 155 Pm activity which decays with a half life of (48 ± 4) s. The assignment of this 48-s Pm activity to 15S Pm is based in part upon the observation of the growth of 22.4-min 1 ss Sm from a 48-s parent and in part on the fact that the 5 yrays could be placed in a 15S Sm level scheme which is consistent with that obtained recently from studies of the 1S4 Sm(n, γ) reaction.

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“…Let us discuss the vibrational states in nuclei given in Table3. The state K~=3/2 + with an energy of 1.107 MeV in 155Sm has been treated in [24] as the one having a large 521~ | component. According to our calculations, in this case the Pauli principle is strongly violated, and at the energy of There are experimental indications [29] to a large admixture of the component 523~@221 in the K; =1/2-state with an energy of 0.920MeV in a65Er.…”

Section: Analysis Of Vibrational States In Deformed Odd Nucleimentioning

confidence: 99%

On vibrational states in deformed odd-A nuclei

1983

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The equations for the description of vibrational states in deformed odd-A nuclei are obtained within the quasiparticle-phonon nuclear model. In these equations the Pauli principle is taken into account in the quasiparticle plus phonon components of the wave functions. It is shown that if in these components the Pauli principle is not violated or is slightly violated, the corresponding vibrational states may exist in deformed odd-A nuclei. If the Pauli principle is strongly violated in the quasiparticle plus phonon state, its centroid energy is shifted towards higher energies, and it can be fragmented over several levels. The analysis of the available experimental data on the low-lying vibrational states in deformed odd-A nuclei has shown that the experimental data do not contradict the results of these calculations.

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Rotational-vibrational band structure in 155Sm

Cited by 24 publications

References 23 publications

Low-lying levels in the nuclei151Nd and155Sm

Low-lying levels in the nuclei151Nd and155Sm

Identification of a New Isotope,¹⁵⁵Pm, Produced in ²⁵²Cf Fission

On vibrational states in deformed odd-A nuclei

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Rotational-vibrational band structure in 155Sm

Cited by 24 publications

References 23 publications

Low-lying levels in the nuclei151Nd and155Sm

Low-lying levels in the nuclei151Nd and155Sm

Identification of a New Isotope,155Pm, Produced in 252Cf Fission

On vibrational states in deformed odd-A nuclei

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Identification of a New Isotope,¹⁵⁵Pm, Produced in ²⁵²Cf Fission