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Your search keyword '"Auranen, Kalle"' showing total 3 results
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3 results on '"Auranen, Kalle"'

1. Fine structure in the α decay of 156Lu and 158Ta

Author

Parr, E., Page, R. D., Joss, D. T., Ali, F. A., Auranen, Kalle, Capponi, L., Grahn, Tuomas, Greenlees, Paul, Henderson, J., Herzan, Andrej, Jakobsson, Ulrika, Julin, Rauno, Juutinen, Sakari, Konki, Joonas, Labiche, M., Leino, Matti, Mason, P. J. R., McPeake, C., O’Donnell, D., Pakarinen, Janne, Papadakis, Philippos, Partanen, Jari, Peura, Pauli, Rahkila, Panu, Revill, J. P., Ruotsalainen, Panu, Sandzelius, Mikael, Sarén, Jan, Scholey, Catherine, Simpson, J., Smith, J. F., Smolen, M., Sorri, Juha, Stolze, Sanna, Thornthwaite, A., and Uusitalo, Juha

Subjects
alpha decay, energy levels and level densities, ydinfysiikka, nuclear structure and decays
Abstract

Fine structure in the α decay of high-spin states in 156Lu and 158Ta has been identified by means of αγ - coincidence analysis. One new α decay from 156Lu and two from 158Ta were identified, one of which was found to populate a previously unknown state in 154Lu. The hindrance-factor systematics from all four odd-odd, N = 85 nuclei with known α-decaying, πh11/2 coupled states were reviewed and are discussed. These proved consistent with the previously assigned (πh11/2νh9/2 )10+ configuration of the α-decaying state in 156Lu, which differs from the (πh11/2ν f7/2 )9+ assignments in the other three nuclei. peerReviewed

Published
2019

2. Fine structure in the α decay of high-spin isomers in 155Lu and 156Hf

Author

Parr, E., Page, R. D., Joss, D. T., Ali, F. A., Auranen, Kalle, Capponi, L., Grahn, Tuomas, Greenlees, Paul, Henderson, J., Herzan, Andrej, Jakobsson, Ulrika, Julin, Rauno, Juutinen, Sakari, Konki, Joonas, Labiche, M., Leino, Matti, Mason, P. J. R., McPeake, C., O’Donnell, D., Pakarinen, Janne, Papadakis, Philippos, Partanen, Jari, Peura, Pauli, Rahkila, Panu, Revill, J. P., Ruotsalainen, Panu, Sandzelius, Mikael, Sarén, Jan, Scholey, Catherine, Simpson, J., Smith, J. F., Smolen, M., Sorri, Juha, Stolze, Sanna, Thornthwaite, A., and Uusitalo, Juha

Subjects
lifetimes and widths, alpha decay, energy levels and level densities, nuclear spin and parity, shell model, isomer decays, ydinfysiikka
Abstract

Fine structure in the α decay of high-spin isomers in 155Lu(25/2−) and 156Hf (8+) has been studied for the first time using αγ -coincidence analysis. Three new α decays from 155Lu(25/2−) and two from 156Hf (8+) have been identified, populating seniority s > 1 states in the N = 82 nuclei 151Tm and 152Yb, respectively. The reduced hindrance factors of the α decays support the previous configuration assignments of the populated states. This is the first observation of states with excitation energy greater than 1.5 MeV being populated following α decay in nuclei outside of the 208Pb region. peerReviewed

Published
2018

3. Confirmation of the new isotope 178Pb

Author

Badran, Hussam, Scholey, Catherine, Auranen, Kalle, Grahn, Tuomas, Greenlees, Paul, Herzan, Andrej, Jakobsson, Ulrika, Julin, Rauno, Juutinen, Sakari, Konki, Joonas, Leino, Matti, Mallaburn, Michael, Pakarinen, Janne, Papadakis, Philippos, Partanen, Jari, Peura, Pauli, Rahkila, Panu, Sandzelius, Mikael, Sarén, Jan, Sorri, Juha, Stolze, Sanna, and Uusitalo, Juha

Subjects
neutron-deficient isotopes, alpha decay, High Energy Physics::Experiment, lyijy
Abstract

The extremely neutron-deficient isotope 178Pb has been produced. The GREAT spectrometer at the focal plane position of the gas-filled separator RITU was used to study the α decay of 178Pb and its α-decay chain through α-α correlations. The α decay was measured to have an energy and half-life of Eα= 7610(30) keV and t1/2 = 0.21+0.21 −0.08 ms, respectively. The half-life is consistent with recent theoretical calculations using the Coulomb and proximity potential model. The α-decay reduced width and hindrance factor for 178Pb were deduced and correspond to an unhindered l = 0 transition. In addition, the mass excess of 178Pb and the α-decay Q value were calculated from the experimental results and compared to theoretical values. peerReviewed

Published
2016

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