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Identification of the Jπ = 1− state in 218Ra populated via α decay of 222Th

Abstrakti
The α decay of 222Th populating the low-lying J π = 3− state, and also a proposed 1− state, in 218Ra has been observed. The observations suggest an excitation energy of 853 keV for the 1− state, which is 60 keV above the 3− state. The hindrance factors of these α decays give a possible boundary to the region of ground-state octupole deformation in the light-actinide nuclei. The relative positions of the J π = 1− and 3− states suggest they are produced by an octupole-vibrational mechanism, as opposed to α clustering or rotations of a reflection-asymmetric octupole-deformed shape.
Päätekijät
Parr, E. Smith, J. F. Greenlees, Paul Smolen, M. Papadakis, Philippos Auranen, Kalle Chapman, R. Cullen, D. M. Grahn, Tuomas Grocutt, L. Herzan, Andrej Herzberg, R.-D. Hodge, D. Jakobsson, Ulrika Julin, Rauno Juutinen, Sakari Konki, Joonas Leino, Matti McPeake, C. Mengoni, D. Mistry, A. K. Mulholland, K. F. O'Neill, G. G. Pakarinen, Janne Partanen, Jari Peura, Pauli Rahkila, Panu Ruotsalainen, Panu Sandzelius, Mikael Sarén, Jan Scheck, M. Scholey, Catherine Sorri, Juha Stolze, Sanna Taylor, M. J. Uusitalo, Juha
Aineistotyyppi
Artikkelit Tutkimusartikkeli
Julkaistu
2016
Sarja
Physical Review C
Aiheet
deformed nuclei
excited states
octupole correlations
radium
torium
Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/26164252
Julkaisija
American Physical Society
Julkaisun pysyvä osoite
https://urn.fi/URN:NBN:fi:jyu-201608153804Käytä tätä linkitykseen
Vertaisarvioinnin tila
Vertaisarvioitu
ISSN
2469-9985
DOI
https://doi.org/10.1103/PhysRevC.94.014307
Kieli
englanti
Julkaisussa
Physical Review C
Viite
  • Parr, E., Smith, J. F., Greenlees, P., Smolen, M., Papadakis, P., Auranen, K., Chapman, R., Cullen, D. M., Grahn, T., Grocutt, L., Herzan, A., Herzberg, R.-D., Hodge, D., Jakobsson, U., Julin, R., Juutinen, S., Konki, J., Leino, M., McPeake, C., . . . Uusitalo, J. (2016). Identification of the Jπ = 1− state in 218Ra populated via α decay of 222Th. Physical Review C, 94(1), Article 014307. https://doi.org/10.1103/PhysRevC.94.014307
Lisenssi
Open Access
Copyright© 2016 American Physical Society. Published in this repository with the kind permission of the publisher.

Jaa

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author Parr, E. Smith, J. F. Greenlees, Paul Smolen, M. Papadakis, Philippos Auranen, Kalle Chapman, R. Cullen, D. M. Grahn, Tuomas Grocutt, L. Herzan, Andrej Herzberg, R.-D. Hodge, D. Jakobsson, Ulrika Julin, Rauno Juutinen, Sakari Konki, Joonas Leino, Matti McPeake, C. Mengoni, D. Mistry, A. K. Mulholland, K. F. O'Neill, G. G. Pakarinen, Janne Partanen, Jari Peura, Pauli Rahkila, Panu Ruotsalainen, Panu Sandzelius, Mikael Sarén, Jan Scheck, M. Scholey, Catherine Sorri, Juha Stolze, Sanna Taylor, M. J. Uusitalo, Juha
author_facet Parr, E. Smith, J. F. Greenlees, Paul Smolen, M. Papadakis, Philippos Auranen, Kalle Chapman, R. Cullen, D. M. Grahn, Tuomas Grocutt, L. Herzan, Andrej Herzberg, R.-D. Hodge, D. Jakobsson, Ulrika Julin, Rauno Juutinen, Sakari Konki, Joonas Leino, Matti McPeake, C. Mengoni, D. Mistry, A. K. Mulholland, K. F. O'Neill, G. G. Pakarinen, Janne Partanen, Jari Peura, Pauli Rahkila, Panu Ruotsalainen, Panu Sandzelius, Mikael Sarén, Jan Scheck, M. Scholey, Catherine Sorri, Juha Stolze, Sanna Taylor, M. J. Uusitalo, Juha
converis_txtF yes
departments_txtF_mv Fysiikan laitos Department of Physics
description The α decay of 222Th populating the low-lying J π = 3− state, and also a proposed 1− state, in 218Ra has been observed. The observations suggest an excitation energy of 853 keV for the 1− state, which is 60 keV above the 3− state. The hindrance factors of these α decays give a possible boundary to the region of ground-state octupole deformation in the light-actinide nuclei. The relative positions of the J π = 1− and 3− states suggest they are produced by an octupole-vibrational mechanism, as opposed to α clustering or rotations of a reflection-asymmetric octupole-deformed shape.
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spellingShingle Identification of the Jπ = 1− state in 218Ra populated via α decay of 222Th Parr, E. Smith, J. F. Greenlees, Paul Smolen, M. Papadakis, Philippos Auranen, Kalle Chapman, R. Cullen, D. M. Grahn, Tuomas Grocutt, L. Herzan, Andrej Herzberg, R.-D. Hodge, D. Jakobsson, Ulrika Julin, Rauno Juutinen, Sakari Konki, Joonas Leino, Matti McPeake, C. Mengoni, D. Mistry, A. K. Mulholland, K. F. O'Neill, G. G. Pakarinen, Janne Partanen, Jari Peura, Pauli Rahkila, Panu Ruotsalainen, Panu Sandzelius, Mikael Sarén, Jan Scheck, M. Scholey, Catherine Sorri, Juha Stolze, Sanna Taylor, M. J. Uusitalo, Juha deformed nuclei excited states octupole correlations radium torium Physical Review C
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title Identification of the Jπ = 1− state in 218Ra populated via α decay of 222Th
title_full Identification of the Jπ = 1− state in 218Ra populated via α decay of 222Th
title_fullStr Identification of the Jπ = 1− state in 218Ra populated via α decay of 222Th
title_full_unstemmed Identification of the Jπ = 1− state in 218Ra populated via α decay of 222Th
title_short Identification of the Jπ = 1− state in 218Ra populated via α decay of 222Th
title_sort Identification of the Jπ 1− state in 218Ra populated via α decay of 222Th
topic deformed nuclei excited states octupole correlations radium torium
yso_count_txtF 2

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