Study of excited states and observation of collective level structures in the odd–odd nucleus $${}^{194}$$Bi

Autor: A. Lopez-Martens, S. Juutinen, K. Hauschild, Jan Sarén, Juha Uusitalo, P. Nieminen, Paul Greenlees, J. M. K. Slotte, Panu Ruotsalainen, A. Herzáň, Pauli Peura, S. Stolze, Juha Sorri, T. Lönnroth, U. Jakobsson, C. Scholey, M. Nyman, Jari Partanen, Kalle Auranen, P. Rahkila, Matti Leino, T. Grahn, Steffen Ketelhut, Mikael Sandzelius, R. Julin
Rok vydání: 2020
Předmět:
Zdroj: The European Physical Journal A. 56
ISSN: 1434-601X
1434-6001
Popis: High-spin states of the odd–odd $${}^{194}$$ Bi nucleus have been studied by means of nuclear spectroscopy for the first time. Two low-lying rotational bands were observed. The positive-parity band built on a short-lived isomeric state 633 keV above the $$\alpha $$ and $$\beta $$ decaying long-lived (10 $$^-$$ ) state is assigned a $${\pi i_{13/2} \otimes \nu i_{13/2 }^{-1}}$$ configuration, while the other band is attributed to the $${\pi h_{9/2} \otimes \nu i_{13/2 }^{-1}}$$ configuration. Both of these bands are assumed to have oblate shape. Three band-like structures composed predominantly of $$\Delta I = 1$$ transitions were also found. One of the shears band candidates is firmly linked to the lower lying level structures whereas for the other two links to lower-lying structures remain missing.
Databáze: OpenAIRE
Externí odkaz: