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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...
Autores principales: | , , , , , , , , , |
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Lenguaje: | eng |
Publicado: |
2015
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1515/ract-2016-2728 http://cds.cern.ch/record/2265159 |
_version_ | 1780954399961513984 |
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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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