Cluster emission in the radioactive decay of 223Ac

The branching ratio of 223Ac decay by spontaneous 14C emission was measured and a search for 15N clusters was performed. After exposure of a hemispherical array of solid-state nuclear track detectors, 347 14C events were identified and no 15N events. B(14C) = λ(14C)/λ(α) = (3.2 ± 1.0) x 10-11 is con...

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Detalles Bibliográficos
Autores principales: Steyn, G F, A. Guglielmetti, Faccio, D, Bonetti, R, Tretyakova, S P, Shishkin, S V, Ogloblin, A A, Pik-Pichak, G A, Vermeulen, C, van der Meulen, N P, van der Walt, T N, McGee, D
Lenguaje:eng
Publicado: 2010
Materias:
XX
Acceso en línea:http://cds.cern.ch/record/1237930
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author Steyn, G F
A. Guglielmetti,
Faccio, D
Bonetti, R
Tretyakova, S P
Shishkin, S V
Ogloblin, A A
Pik-Pichak, G A
Vermeulen, C
van der Meulen, N P
van der Walt, T N
McGee, D
author_facet Steyn, G F
A. Guglielmetti,
Faccio, D
Bonetti, R
Tretyakova, S P
Shishkin, S V
Ogloblin, A A
Pik-Pichak, G A
Vermeulen, C
van der Meulen, N P
van der Walt, T N
McGee, D
author_sort Steyn, G F
collection CERN
description The branching ratio of 223Ac decay by spontaneous 14C emission was measured and a search for 15N clusters was performed. After exposure of a hemispherical array of solid-state nuclear track detectors, 347 14C events were identified and no 15N events. B(14C) = λ(14C)/λ(α) = (3.2 ± 1.0) x 10-11 is consistent with a favoured ground state to ground state transition. As no nitrogen tracks were found, only an upper limit could be inferred for 15N emission, B(15N) = λ(15N)/λ(α) ≤ 2.2 x 10-13 (confidence limit 90%), consistent with an unfavoured transition. Intense 227Pa sources were produced for this study, using the reaction 232Th(p,6n)227Pa. This offered an opportunity to compare the measured source strength with predictions based on published excitation function data.
id cern-1237930
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2010
record_format invenio
spelling cern-12379302019-09-30T06:29:59Zhttp://cds.cern.ch/record/1237930engSteyn, G FA. Guglielmetti,Faccio, DBonetti, RTretyakova, S PShishkin, S VOgloblin, A APik-Pichak, G AVermeulen, Cvan der Meulen, N Pvan der Walt, T NMcGee, DCluster emission in the radioactive decay of 223AcXXThe branching ratio of 223Ac decay by spontaneous 14C emission was measured and a search for 15N clusters was performed. After exposure of a hemispherical array of solid-state nuclear track detectors, 347 14C events were identified and no 15N events. B(14C) = λ(14C)/λ(α) = (3.2 ± 1.0) x 10-11 is consistent with a favoured ground state to ground state transition. As no nitrogen tracks were found, only an upper limit could be inferred for 15N emission, B(15N) = λ(15N)/λ(α) ≤ 2.2 x 10-13 (confidence limit 90%), consistent with an unfavoured transition. Intense 227Pa sources were produced for this study, using the reaction 232Th(p,6n)227Pa. This offered an opportunity to compare the measured source strength with predictions based on published excitation function data.oai:cds.cern.ch:12379302010
spellingShingle XX
Steyn, G F
A. Guglielmetti,
Faccio, D
Bonetti, R
Tretyakova, S P
Shishkin, S V
Ogloblin, A A
Pik-Pichak, G A
Vermeulen, C
van der Meulen, N P
van der Walt, T N
McGee, D
Cluster emission in the radioactive decay of 223Ac
title Cluster emission in the radioactive decay of 223Ac
title_full Cluster emission in the radioactive decay of 223Ac
title_fullStr Cluster emission in the radioactive decay of 223Ac
title_full_unstemmed Cluster emission in the radioactive decay of 223Ac
title_short Cluster emission in the radioactive decay of 223Ac
title_sort cluster emission in the radioactive decay of 223ac
topic XX
url http://cds.cern.ch/record/1237930
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AT bonettir clusteremissionintheradioactivedecayof223ac
AT tretyakovasp clusteremissionintheradioactivedecayof223ac
AT shishkinsv clusteremissionintheradioactivedecayof223ac
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