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Excited states in $^{217}$Ra populated in the α decay of $^{221}$Th
Fine structure in the α decay of $^{221}_{90}$Th, populating excited states in $^{217}_{88}$Ra, was studied using αγ-coincidence spectroscopy. Two α-decay branches from $^{221}$Th have been newly observed, with $E_{\alpha} \mathrm{(keV)} [b_{\alpha}(\%)]=7951(8)[0.14(3)]$ and $8247(3)[1.51(12)]$, to...
| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Lenguaje: | eng |
| Publicado: |
2020
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevC.102.054335 http://cds.cern.ch/record/2800355 |
| _version_ | 1780972626635653120 |
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| author | Parr, E Smith, J F Greenlees, P T Auranen, K Chapman, R Cullen, D M Grahn, T Grocutt, L Herzáň, A Herzberg, R D Hodge, D Jakobsson, U Julin, R Juutinen, S Konki, J McPeake, C Mengoni, D Mistry, A K Mulholland, K F O'Neill, G G Pakarinen, J Papadakis, P Partanen, J Peura, P Rahkila, P Ruotsalainen, P Sandzelius, M Sarén, J Scheck, M Scholey, C Siciliano, M Smolen, M Sorri, J Stolze, S Taylor, M J Uusitalo, J |
| author_facet | Parr, E Smith, J F Greenlees, P T Auranen, K Chapman, R Cullen, D M Grahn, T Grocutt, L Herzáň, A Herzberg, R D Hodge, D Jakobsson, U Julin, R Juutinen, S Konki, J McPeake, C Mengoni, D Mistry, A K Mulholland, K F O'Neill, G G Pakarinen, J Papadakis, P Partanen, J Peura, P Rahkila, P Ruotsalainen, P Sandzelius, M Sarén, J Scheck, M Scholey, C Siciliano, M Smolen, M Sorri, J Stolze, S Taylor, M J Uusitalo, J |
| author_sort | Parr, E |
| collection | CERN |
| description | Fine structure in the α decay of $^{221}_{90}$Th, populating excited states in $^{217}_{88}$Ra, was studied using αγ-coincidence spectroscopy. Two α-decay branches from $^{221}$Th have been newly observed, with $E_{\alpha} \mathrm{(keV)} [b_{\alpha}(\%)]=7951(8)[0.14(3)]$ and $8247(3)[1.51(12)]$, together with three previously known branches. Also, two new states in $^{217}$Ra were identified at $E = 177$ and 227 keV. The ground-state configurations of the odd-$A$, $N = 131$ transitional isotones above $^{208}$Pb are interpreted from their α-decay fine structure systematics and considered in terms of predictions using spherical shell and reflection-asymmetric models. |
| id | cern-2800355 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2020 |
| record_format | invenio |
| spelling | cern-28003552022-01-25T22:17:04Zdoi:10.1103/PhysRevC.102.054335http://cds.cern.ch/record/2800355engParr, ESmith, J FGreenlees, P TAuranen, KChapman, RCullen, D MGrahn, TGrocutt, LHerzáň, AHerzberg, R DHodge, DJakobsson, UJulin, RJuutinen, SKonki, JMcPeake, CMengoni, DMistry, A KMulholland, K FO'Neill, G GPakarinen, JPapadakis, PPartanen, JPeura, PRahkila, PRuotsalainen, PSandzelius, MSarén, JScheck, MScholey, CSiciliano, MSmolen, MSorri, JStolze, STaylor, M JUusitalo, JExcited states in $^{217}$Ra populated in the α decay of $^{221}$ThNuclear Physics - ExperimentNuclear Physics - TheoryFine structure in the α decay of $^{221}_{90}$Th, populating excited states in $^{217}_{88}$Ra, was studied using αγ-coincidence spectroscopy. Two α-decay branches from $^{221}$Th have been newly observed, with $E_{\alpha} \mathrm{(keV)} [b_{\alpha}(\%)]=7951(8)[0.14(3)]$ and $8247(3)[1.51(12)]$, together with three previously known branches. Also, two new states in $^{217}$Ra were identified at $E = 177$ and 227 keV. The ground-state configurations of the odd-$A$, $N = 131$ transitional isotones above $^{208}$Pb are interpreted from their α-decay fine structure systematics and considered in terms of predictions using spherical shell and reflection-asymmetric models.oai:cds.cern.ch:28003552020 |
| spellingShingle | Nuclear Physics - Experiment Nuclear Physics - Theory Parr, E Smith, J F Greenlees, P T Auranen, K Chapman, R Cullen, D M Grahn, T Grocutt, L Herzáň, A Herzberg, R D Hodge, D Jakobsson, U Julin, R Juutinen, S Konki, J McPeake, C Mengoni, D Mistry, A K Mulholland, K F O'Neill, G G Pakarinen, J Papadakis, P Partanen, J Peura, P Rahkila, P Ruotsalainen, P Sandzelius, M Sarén, J Scheck, M Scholey, C Siciliano, M Smolen, M Sorri, J Stolze, S Taylor, M J Uusitalo, J Excited states in $^{217}$Ra populated in the α decay of $^{221}$Th |
| title | Excited states in $^{217}$Ra populated in the α decay of $^{221}$Th |
| title_full | Excited states in $^{217}$Ra populated in the α decay of $^{221}$Th |
| title_fullStr | Excited states in $^{217}$Ra populated in the α decay of $^{221}$Th |
| title_full_unstemmed | Excited states in $^{217}$Ra populated in the α decay of $^{221}$Th |
| title_short | Excited states in $^{217}$Ra populated in the α decay of $^{221}$Th |
| title_sort | excited states in $^{217}$ra populated in the α decay of $^{221}$th |
| topic | Nuclear Physics - Experiment Nuclear Physics - Theory |
| url | https://dx.doi.org/10.1103/PhysRevC.102.054335 http://cds.cern.ch/record/2800355 |
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