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Production, separation and target preparation of 171Tm an 147Pm for neutron cross section measurements

The knowledge of the neutron capture cross sections of s-process branching point isotopes represents a basic requirement for the understanding of star evolution. Since such branching point isotopes are by definition radioactive, the measurement of their cross sections from thermal to stellar energie...

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Autores principales: Heinitz, S, Maugeri, E A, Schumann, D, Dressler, R, Kivel, N, Guerrero, C, Köster, U, Tessler, M, Paul, M, Halfon, S
Lenguaje:eng
Publicado: 2015
Materias:
Acceso en línea:https://dx.doi.org/10.1515/ract-2016-2728
http://cds.cern.ch/record/2265159
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author Heinitz, S
Maugeri, E A
Schumann, D
Dressler, R
Kivel, N
Guerrero, C
Köster, U
Tessler, M
Paul, M
Halfon, S
author_facet Heinitz, S
Maugeri, E A
Schumann, D
Dressler, R
Kivel, N
Guerrero, C
Köster, U
Tessler, M
Paul, M
Halfon, S
author_sort Heinitz, S
collection CERN
description The knowledge of the neutron capture cross sections of s-process branching point isotopes represents a basic requirement for the understanding of star evolution. Since such branching point isotopes are by definition radioactive, the measurement of their cross sections from thermal to stellar energies becomes a challenging task. Considerable amounts of material have to be produced, representing a significant radioactive hazard. We report here on the production and separation of 3.5 mg 171Tm from 240 mg 170Er2O3 and 72 µg 147Pm from 100 mg 146Nd2O3 irradiated at the ILL high flux reactor. Thin targets were prepared with high chemical and radioisotopic purity suitable for neutron capture measurements at n_TOF CERN and the SARAF-LiLiT facility.
id cern-2265159
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2015
record_format invenio
spelling cern-22651592022-11-17T14:48:41Zdoi:10.1515/ract-2016-2728http://cds.cern.ch/record/2265159engHeinitz, SMaugeri, E ASchumann, DDressler, RKivel, NGuerrero, CKöster, UTessler, MPaul, MHalfon, SProduction, separation and target preparation of 171Tm an 147Pm for neutron cross section measurementsChemical Physics and ChemistryThe knowledge of the neutron capture cross sections of s-process branching point isotopes represents a basic requirement for the understanding of star evolution. Since such branching point isotopes are by definition radioactive, the measurement of their cross sections from thermal to stellar energies becomes a challenging task. Considerable amounts of material have to be produced, representing a significant radioactive hazard. We report here on the production and separation of 3.5 mg 171Tm from 240 mg 170Er2O3 and 72 µg 147Pm from 100 mg 146Nd2O3 irradiated at the ILL high flux reactor. Thin targets were prepared with high chemical and radioisotopic purity suitable for neutron capture measurements at n_TOF CERN and the SARAF-LiLiT facility.oai:cds.cern.ch:22651592015-10-26
spellingShingle Chemical Physics and Chemistry
Heinitz, S
Maugeri, E A
Schumann, D
Dressler, R
Kivel, N
Guerrero, C
Köster, U
Tessler, M
Paul, M
Halfon, S
Production, separation and target preparation of 171Tm an 147Pm for neutron cross section measurements
title Production, separation and target preparation of 171Tm an 147Pm for neutron cross section measurements
title_full Production, separation and target preparation of 171Tm an 147Pm for neutron cross section measurements
title_fullStr Production, separation and target preparation of 171Tm an 147Pm for neutron cross section measurements
title_full_unstemmed Production, separation and target preparation of 171Tm an 147Pm for neutron cross section measurements
title_short Production, separation and target preparation of 171Tm an 147Pm for neutron cross section measurements
title_sort production, separation and target preparation of 171tm an 147pm for neutron cross section measurements
topic Chemical Physics and Chemistry
url https://dx.doi.org/10.1515/ract-2016-2728
http://cds.cern.ch/record/2265159
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