A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
In-beam γ-ray and electron spectroscopy of Md249,251 (2020)
Briselet, R., Theisen, Ch., Sulignano, B., Airiau, M., Auranen, K., Cox, D. M., Déchery, F., Drouart, A., Favier, Z., Gall, B., Goigoux, T., Grahn, T., Greenlees, P. T., Hauschild, K., Herzan, A., Herzberg, R.-D., Jakobsson, U., Julin, R., Juutinen, S., . . . Ryssens, W. (2020). In-beam γ-ray and electron spectroscopy of Md249,251. Physical Review C, 102(1), Article 014307. https://doi.org/10.1103/physrevc.102.014307
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Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: Briselet, R.; Theisen, Ch.; Sulignano, B.; Airiau, M.; Auranen, K.; Cox, D. M.; Déchery, F.; Drouart, A.; Favier, Z.; Gall, B.; et al.
Lehti tai sarja: Physical Review C
ISSN: 2469-9985
eISSN: 2469-9993
Julkaisuvuosi: 2020
Ilmestymispäivä: 09.07.2020
Volyymi: 102
Lehden numero: 1
Artikkelinumero: 014307
Kustantaja: American Physical Society
Julkaisumaa: Yhdysvallat (USA)
Julkaisun kieli: englanti
DOI: https://doi.org/10.1103/physrevc.102.014307
Julkaisun avoin saatavuus: Ei avoin
Julkaisukanavan avoin saatavuus:
Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/71132
Julkaisu on rinnakkaistallennettu: https://arxiv.org/abs/2001.10235
Tiivistelmä
The odd-Z 251Md nucleus was studied using combined γ-ray and conversion-electron in-beam spectroscopy. Besides the previously observed rotational band based on the [521]1/2− configuration, another rotational structure has been identified using γ−γ coincidences. The use of electron spectroscopy allowed the rotational bands to be observed over a larger rotational frequency range. Using the transition intensities that depend on the gyromagnetic factor, a [514]7/2− single-particle configuration has been inferred for this band, i.e., the ground-state band. A physical background that dominates the electron spectrum with an intensity of ≃60% was well reproduced by simulating a set of unresolved excited bands. Moreover, a detailed analysis of the intensity profile as a function of the angular momentum provided a method for deriving the orbital gyromagnetic factor, namely gK=0.69+0.19−0.16 for the ground-state band. The odd-Z 249Md was studied using γ-ray in-beam spectroscopy. Evidence for octupole correlations resulting from the mixing of the Δl=Δj=3 [521]3/2− and [633]7/2+ Nilsson orbitals were found in both 249,251Md. A surprising similarity of the 251Md ground-state band transition energies with those of the excited band of 255Lr has been discussed in terms of identical bands. Skyrme-Hartree-Fock-Bogoliubov calculations were performed to investigate the origin of the similarities between these bands.
YSO-asiasanat: ydinfysiikka; spektroskopia
Vapaat asiasanat: collective levels; electromagnetic transitions; nuclear spin and parity
Liittyvät organisaatiot
OKM-raportointi: Kyllä
VIRTA-lähetysvuosi: 2020
JUFO-taso: 2
