Alpha decay sup 2 sup 2 sup 5 Ac-> sup 2 sup 2 sup 1 Fr

In-depth investigation of (alpha-gamma)-coincidences at the sup 2 sup 2 sup 5 Ac decay is carried out. Twenty-one new weak gamma-rays are found; 18 gamma-rays earlier ascribed to the sup 2 sup 2 sup 5 Ac decay are not confirmed. The quantitative analysis of the (alpha-gamma)-coincidences makes it po...

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Detalles Bibliográficos
Autores principales: Kudrya, S A, Chumin, V G, Fominykh, V I, Gorozhankin, V M, Gromov, K Y, Malikov, S R, Malov, L A, Sergienko, V A, Tsupko-Sitnikov, V V, Yakushev, E A
Lenguaje:eng
Publicado: 2002
Materias:
Nuclear Physics
Acceso en línea:http://cds.cern.ch/record/747558
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author Kudrya, S A
Chumin, V G
Fominykh, V I
Gorozhankin, V M
Gromov, K Y
Malikov, S R
Malov, L A
Sergienko, V A
Tsupko-Sitnikov, V V
Yakushev, E A
author_facet Kudrya, S A
Chumin, V G
Fominykh, V I
Gorozhankin, V M
Gromov, K Y
Malikov, S R
Malov, L A
Sergienko, V A
Tsupko-Sitnikov, V V
Yakushev, E A
author_sort Kudrya, S A
collection CERN
description In-depth investigation of (alpha-gamma)-coincidences at the sup 2 sup 2 sup 5 Ac decay is carried out. Twenty-one new weak gamma-rays are found; 18 gamma-rays earlier ascribed to the sup 2 sup 2 sup 5 Ac decay are not confirmed. The quantitative analysis of the (alpha-gamma)-coincidences makes it possible to find the intensity of population of sup 2 sup 2 sup 1 Fr levels by the alpha decay and multipolarities of five weak gamma-transitions. The conversion electron spectrum is investigated in the range of 5-24 keV with a high (some 20 eV) energy resolution. A new M1 type 10.6-keV gamma-transition is found. The proposed sup 2 sup 2 sup 5 Ac decay scheme includes 31 excited sup 2 sup 2 sup 1 Fr states. Parities are established for 16 of them. Possible spin values are proposed for sup 2 sup 2 sup 1 Fr levels. Properties of excited sup 2 sup 2 sup 1 Fr states are satisfactorily described by the quasiparticle-phonon nuclear model without the assumption of static octupole deformation
id cern-747558
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2002
record_format invenio
spelling cern-7475582019-09-30T06:29:59Zhttp://cds.cern.ch/record/747558engKudrya, S AChumin, V GFominykh, V IGorozhankin, V MGromov, K YMalikov, S RMalov, L ASergienko, V ATsupko-Sitnikov, V VYakushev, E AAlpha decay sup 2 sup 2 sup 5 Ac-> sup 2 sup 2 sup 1 FrNuclear PhysicsIn-depth investigation of (alpha-gamma)-coincidences at the sup 2 sup 2 sup 5 Ac decay is carried out. Twenty-one new weak gamma-rays are found; 18 gamma-rays earlier ascribed to the sup 2 sup 2 sup 5 Ac decay are not confirmed. The quantitative analysis of the (alpha-gamma)-coincidences makes it possible to find the intensity of population of sup 2 sup 2 sup 1 Fr levels by the alpha decay and multipolarities of five weak gamma-transitions. The conversion electron spectrum is investigated in the range of 5-24 keV with a high (some 20 eV) energy resolution. A new M1 type 10.6-keV gamma-transition is found. The proposed sup 2 sup 2 sup 5 Ac decay scheme includes 31 excited sup 2 sup 2 sup 1 Fr states. Parities are established for 16 of them. Possible spin values are proposed for sup 2 sup 2 sup 1 Fr levels. Properties of excited sup 2 sup 2 sup 1 Fr states are satisfactorily described by the quasiparticle-phonon nuclear model without the assumption of static octupole deformationJINR-E6-2002-202oai:cds.cern.ch:7475582002
spellingShingle Nuclear Physics
Kudrya, S A
Chumin, V G
Fominykh, V I
Gorozhankin, V M
Gromov, K Y
Malikov, S R
Malov, L A
Sergienko, V A
Tsupko-Sitnikov, V V
Yakushev, E A
Alpha decay sup 2 sup 2 sup 5 Ac-> sup 2 sup 2 sup 1 Fr
title Alpha decay sup 2 sup 2 sup 5 Ac-> sup 2 sup 2 sup 1 Fr
title_full Alpha decay sup 2 sup 2 sup 5 Ac-> sup 2 sup 2 sup 1 Fr
title_fullStr Alpha decay sup 2 sup 2 sup 5 Ac-> sup 2 sup 2 sup 1 Fr
title_full_unstemmed Alpha decay sup 2 sup 2 sup 5 Ac-> sup 2 sup 2 sup 1 Fr
title_short Alpha decay sup 2 sup 2 sup 5 Ac-> sup 2 sup 2 sup 1 Fr
title_sort alpha decay sup 2 sup 2 sup 5 ac-> sup 2 sup 2 sup 1 fr
topic Nuclear Physics
url http://cds.cern.ch/record/747558
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