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Parry, C. M.; Boston, A. J.; Chandler, C.; Galindo-Uribarri, A.; Hibbert, I. M.; Janzen, V. P.; Joss, D. T.; Mullins, S. M.; Nolan, P. J.; Paul, E. S.; Regan, P. H.; Sabourin, Vincent; Wadsworth, R.; Ward, D. R.; Wyss, R.

doi:10.1103/physrevc.57.2215

Cited by 24 publications

(18 citation statements)

References 22 publications

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“…In the case of 133 Pr, the low spin states are represented by a quasiproton K = 1/2 state from πh 11/2 , which is different from the results reported in Refs. [4][5][6][7]. − .…”

Section: B Band Diagram Analysismentioning

confidence: 99%

Projected shell model study of yrast states of neutron-deficient odd-mass Pr nuclei

et al. 2011

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“…In the case of 133 Pr, the low spin states are represented by a quasiproton K = 1/2 state from πh 11/2 , which is different from the results reported in Refs. [4][5][6][7]. − .…”

Section: B Band Diagram Analysismentioning

confidence: 99%

Projected shell model study of yrast states of neutron-deficient odd-mass Pr nuclei

et al. 2011

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“…The white components of the arrows reflect the calculated internal conversion contribution for the assumed multipolarity without mixing. Dynamic moments of inertia as a function of the rotational frequency for the rotational bands in 141 Ho, and the ph 11͞2 and 3͞2 1 ͓411͔ bands in 133 Pm [13] are shown in the inset. their energy sum, the 91-and 78-keV transitions are proposed to form a parallel DI 1 cascade.…”

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confidence: 99%

Rotational Bands in the Proton EmitterH141o

et al. 2001

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Rotational bands feeding the ground state and the isomeric state in the proton emitter 141 Ho were observed using the recoil-decay tagging method. This constitutes direct evidence that 141 Ho is deformed. A quadrupole deformation of b 2 0.25͑4͒ was deduced for the ground state from the extracted dynamic moment of inertia. Based on observed band crossings and signature splittings the 7͞2 2 ͓523͔ and 1͞2 1 ͓411͔ configurations were proposed for the ground state and the isomeric state, respectively. Comparison with particle-rotor calculations for b 2 0.25 indicates, however, that 141 Ho may have significant hexadecapole deformation and could be triaxial in the 7͞2 2 ͓523͔ ground state.The domain of nuclei situated far from the line of b stability has always been an arena of numerous experimental pursuits and a testing ground for new theoretical models. With radioactive beams on the horizon, the physics of nuclei with an excess of neutrons or protons has become one of the focal points of nuclear physics. These nuclei define the very limits of nuclear existence and will be susceptible to phenomena associated with low binding energy, such as halos, skins, or mixing between bound and continuum states.The proton separation energy decreases with decreasing neutron number. Proton-rich nuclei, which have a negative proton separation energy and are, thus, situated beyond the proton drip-line, can spontaneously emit protons. The proton decay rate is governed by the energy and orbital angular momentum of the emitted proton. It also depends on the wave function of the proton-decaying state, which is determined by the shape of the nuclear potential and by residual interactions between valence nucleons. Most of the known proton emitters have decay rates consistent with the as

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“…This observation suggests that the crossing is blocked, as would be expected for the band built on the nhll/2 orbital. The increase of fl(21 at hw = 0.35 MeV could be caused by the alignment of a second pair of h1112protons or/and by the alignment of a pair of h1112neutrons [13]. This second crossing can be seen in the d~12band in 133Pm [14] (Fig.…”

Section: H0mentioning

confidence: 93%

“…For the ground state band, j12J increases gradually up to hw % 0.25 MeV and then rises more steeply, to start leveling off at about 0.4 MeV. In this region of nuclei, the first band crossing is normally due to the alignment of a pair of h11i2protons, and has been observed to take place at a frequency of about 0.25 MeV [13]. It manifests itself .by a dramatic change in fl(2), as illustrated in Fig.…”

Section: H0mentioning

confidence: 94%

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GAMMASPHERE + FMA: A journey beyond the proton drip-line

Seweryniak

Woods²,

Ressler

et al. 2001

Nuclear Physics A

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The majority of experiments performed during the 2-year long stay of GAMMAS-PHERE at the Argonne National Laboratory aimed to study proton-rich nuclei far from the line of stability at and beyond the proton drip-line. A high reaction channel selectivity was required to assign in-beam y-ray transitions to weakly populated exotic nuclei in the presence of background from strong reaction channels. In many of the experiments this was achieved by using the Argonne fragment mass analyzer to separate heavy-ion fusion-evaporation reaction products from scattered beam and disperse them according to their mass-over-charge-state ratio. For medium mass and heavy a and proton emitters the Recoil-Decay Tagging method was implemented. In-beam~-ray transitions were observed in several proton emitters between Z=50 and Z=82. Among others, rotational bands were assigned to 141H0 and 131 Eu. A quadruple deformation of~=0.25(4) was deduced for the ground state in 141 Ho from the extracted dynamic moment of inertia. Based on observed band crossings and signature splittings the 7/2-[523] and 1/2+ [411] configurations were proposed for the ground state and the isomeric state, respectively. Comparison with particle-rotor calculations indicates, however, that 141H0may have significant hexadecapole deformation and could be triaxial.

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Yrast structures in the neutron-deficient59127Pr68and<

Cited by 24 publications

References 22 publications

Projected shell model study of yrast states of neutron-deficient odd-mass Pr nuclei

Projected shell model study of yrast states of neutron-deficient odd-mass Pr nuclei

Rotational Bands in the Proton EmitterH141o

GAMMASPHERE + FMA: A journey beyond the proton drip-line

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