Spectroscopy and single-particle structure of the odd- Z heavy elements 255Lr, 251Md and 247Es

Chatillon, A.; Theisen, Ch.; Greenlees, P. T.; Auger, G.; Bastin, J. E.; Bouchez, E.; Bouriquet, B.; Casandjian, J. M.; Cee, R.; Clément, E.; Dayras, R.; Toureil, R. de; Eeckhaudt, S.; Görgen, A.; Grahn, T.; Grévy, S.; Hauschild, K.; Herzberg, R.‐D.; Ikin, P. J. C.; Jones, G.D.; Jones, P.; Julin, R.; Juutinen, S.; Kettunen, H.; Korichi, A.; Körten, W.; Coz, Y. Le; Leino, M.; Лопез-Мартенс, А.; Lukyanov, S. M.; Penionzhkevich, Yu. É.; Perkowski, J.; Pritchard, A.; Rahkila, P.; Rejmund, M.; Sarén, J.; Scholey, C.; Siem, S.; Saint‐Laurent, M. G.; Simenel, C.; Sobolev, Yu. G.; Stödel, C.; Uusitalo, J.; Villari, A. C. C.; Bender, M.; Bonche, P.; Heenen, Paul‐Henri

doi:10.1140/epja/i2006-10134-5

Cited by 92 publications

(73 citation statements)

References 51 publications

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“…of 257 No [46] is reproduced in our calculation. On the other hand, the predicted ground states in 255 Lr and 101 Md are interchanged with respect to the experimental results [47]. Ground state spins and parities evaluated from measurements in other Md, No, Lr and Rf isotopes are consistent with our calculations, except for the measured or evaluated 7/2 − ground states in Md.…”

Section: Resultssupporting

confidence: 74%

Qαvalues in superheavy nuclei from the deformed Woods-Saxon model

2014

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Masses of superheavy (SH) nuclei with Z = 98−128, including odd and odd-odd nuclei, are systematically calculated within the microscopic-macroscopic model based on the deformed Woods-Saxon potential. Ground states are found by minimizing energy over deformations and configurations. Pairing in odd particle-number systems is treated either by blocking or by adding the BCS energy of the odd quasiparticle. Three new parameters are introduced which may be interpreted as the constant mean pairing energies for even-odd, odd-even and odd-odd nuclei. They are adjusted by a fit to masses of heavy nuclei. Other parameters of the model, fixed previously by fitting masses of even-even heavy nuclei, are kept unchanged. With this adjustment, the masses of SH nuclei are predicted and then used to calculate α-decay energies to be compared to known measured values. It turns out that the agreement between calculated Qα values with data in SH nuclei is better than in the region of the mass fit. The model overestimates Qα for Z = 111 − 113. Ground state (g.s.) configurations in some SH nuclei hint to a possible α-decay hindrance. The calculated configurationpreserving transition energies show that in some cases this might explain discrepancies, but more data is needed to explain the situation.

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Section: Resultssupporting

confidence: 74%

Qαvalues in superheavy nuclei from the deformed Woods-Saxon model

2014

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“…The second scintillator was placed in the center of a modified version of the BEST array [20], originally designed for the spectroscopy of transfermium isotopes. Two alcohol-cooled silicon detectors of 1 mm thickness and divided into four quadrants each were facing the tilted surfaces of the second scintillator as illustrated in Fig.…”

Section: Isomer Detection Systemmentioning

confidence: 99%

A new device for combined Coulomb excitation and isomeric conversion electron spectroscopy with fast fragmentation beams

Clément

Görgen

Körten

et al. 2008

Nuclear Instruments and Methods in Physics Research Section A:

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“…3. As explained in [9], both transition at 243 and 293 keV are deduced to be electric dipole E1, while the 50 keV transition is a magnetic dipole M1.…”

Section: New Atomic Calculationsmentioning

confidence: 88%

“…Although the numbers may be similar, the distributions of X-ray energies differ slightly. interpretation of the data are reported in [9]. The decay scheme of 251 101 Md is shown in Fig.…”

Section: New Atomic Calculationsmentioning

confidence: 97%

Internal conversion and summing effects in heavy-nuclei spectroscopy

Theisen

Лопез-Мартенс

Bonnelle

2008

Nuclear Instruments and Methods in Physics Research Section A:

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Internal conversion of low-energy nuclear transitions occurs with a high probability in heavy nuclei. After the emission of the conversion electron, a cascade of X-rays, Auger or Coster-Krönig electrons takes place. In α-decay experiments in which the nuclei of interest are implanted into a silicon detector, these atomic processes contribute to the detected energy. To understand the distortions of the alpha-particle energy spectra, knowledge of the various atomic yields is required. Using state-ofthe-art calculations, new atomic yields are computed in 99 Es and compared to those available in the literature. Detailed simulations of the 251 101 Md alpha decay are performed and compared to experimental data. Possible ways to discriminate between the available atomic yields are also discussed.

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Spectroscopy and single-particle structure of the odd- Z heavy elements 255Lr, 251Md and 247Es

Abstract: Abstract. The odd-Z isotope

Cited by 92 publications

References 51 publications

Qαvalues in superheavy nuclei from the deformed Woods-Saxon model

Qαvalues in superheavy nuclei from the deformed Woods-Saxon model

A new device for combined Coulomb excitation and isomeric conversion electron spectroscopy with fast fragmentation beams

Internal conversion and summing effects in heavy-nuclei spectroscopy

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