Spectroscopy of 212Po and 213At using a 8He radioactive beam and EXOGAM
Identifieur interne : 000F72 ( Istex/Curation ); précédent : 000F71; suivant : 000F73Spectroscopy of 212Po and 213At using a 8He radioactive beam and EXOGAM
Auteurs : A B Garnsworthy [Royaume-Uni] ; N J Thompson [Royaume-Uni] ; Zs Podolyk [Royaume-Uni] ; P M Walker [Royaume-Uni] ; S J Williams [Royaume-Uni] ; G D Dracoulis [Australie] ; G. De France [France] ; G J Lane [Australie] ; K. Andgren [Royaume-Uni, Suède] ; A M Bruce [Royaume-Uni] ; A P Byrne [Australie] ; W N Catford [Royaume-Uni] ; B. Cederwall [Suède] ; G A Jones [Royaume-Uni] ; B. Mcguirk [Royaume-Uni] ; S. Mandal [Allemagne] ; E S Paul [Royaume-Uni] ; V. Pucknell [Royaume-Uni] ; N. Redon [France] ; B. Rosse [France] ; R J Senior [Australie] ; G. Sletten [Danemark]Source :
- Journal of Physics G: Nuclear and Particle Physics [ 0954-3899 ] ; 2005.
Descripteurs français
- Wicri :
- topic : Physique nucléaire.
English descriptors
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Abstract
A beam of 28 MeV 8He particles with an average intensity 2 105 ions s1, produced by the SPIRAL facility at GANIL, was used to initiate fusionevaporation reactions in thick targets of 208Pb and 209Bi. Excited states of 212Po and 213At were populated in (8He,4n) reactions. The emitted -rays were detected using the EXOGAM array composed of four Compton suppressed germanium Clover detectors in a close geometry configuration. Preliminary results show that 212Po has been populated to high spin (I 14) with a significantly increased yield compared with our previous 8He beam experiment. An apparently increased relative population of states up to 12 was observed compared with published results from a 208Pb(9Be,n)212Po reaction at 48 MeV. Evidence is presented for a previously unreported de-excitation pathway: 69 keV (13 12). States up to I (39/2) have also been observed in 213At.
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DOI: 10.1088/0954-3899/31/10/086
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De France</name><affiliation wicri:level="1"><mods:affiliation>GANIL, BP 5027, Caen Cedex F-14021, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>GANIL, BP 5027, Caen Cedex F-14021</wicri:regionArea></affiliation></author><author><name sortKey="Lane, G J" sort="Lane, G J" uniqKey="Lane G" first="G J" last="Lane">G J Lane</name><affiliation wicri:level="1"><mods:affiliation>Department of Nuclear Physics, Australian National University, Canberra, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Department of Nuclear Physics, Australian National University, Canberra</wicri:regionArea></affiliation></author><author><name sortKey="Andgren, K" sort="Andgren, K" uniqKey="Andgren K" first="K" last="Andgren">K. Andgren</name><affiliation wicri:level="1"><mods:affiliation>Department of Physics, University of Surrey, Guildford GU2 7XH, UK</mods:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Department of Physics, University of Surrey, Guildford GU2 7XH</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Department of Physics, Royal Institute of Technology, S-106 91, Stockholm, Sweden</mods:affiliation><country xml:lang="fr">Suède</country><wicri:regionArea>Department of Physics, Royal Institute of Technology, S-106 91, Stockholm</wicri:regionArea></affiliation></author><author><name sortKey="Bruce, A M" sort="Bruce, A M" uniqKey="Bruce A" first="A M" last="Bruce">A M Bruce</name><affiliation wicri:level="1"><mods:affiliation>School of Engineering, University of Brighton, Brighton BN2 4GJ, UK</mods:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>School of Engineering, University of Brighton, Brighton BN2 4GJ</wicri:regionArea></affiliation></author><author><name sortKey="Byrne, A P" sort="Byrne, A P" uniqKey="Byrne A" first="A P" last="Byrne">A P Byrne</name><affiliation wicri:level="1"><mods:affiliation>Department of Nuclear Physics, Australian National University, Canberra, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Department of Nuclear Physics, Australian National University, Canberra</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Department of Nuclear Physics, The Faculties, ANU, Canberra, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Department of Nuclear Physics, The Faculties, ANU, Canberra</wicri:regionArea></affiliation></author><author><name sortKey="Catford, W N" sort="Catford, W N" uniqKey="Catford W" first="W N" last="Catford">W N Catford</name><affiliation wicri:level="1"><mods:affiliation>Department of Physics, University of Surrey, Guildford GU2 7XH, UK</mods:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Department of Physics, University of Surrey, Guildford GU2 7XH</wicri:regionArea></affiliation></author><author><name sortKey="Cederwall, B" sort="Cederwall, B" uniqKey="Cederwall B" first="B" last="Cederwall">B. Cederwall</name><affiliation wicri:level="1"><mods:affiliation>Department of Physics, Royal Institute of Technology, S-106 91, Stockholm, Sweden</mods:affiliation><country xml:lang="fr">Suède</country><wicri:regionArea>Department of Physics, Royal Institute of Technology, S-106 91, Stockholm</wicri:regionArea></affiliation></author><author><name sortKey="Jones, G A" sort="Jones, G A" uniqKey="Jones G" first="G A" last="Jones">G A Jones</name><affiliation wicri:level="1"><mods:affiliation>Department of Physics, University of Surrey, Guildford GU2 7XH, UK</mods:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Department of Physics, University of Surrey, Guildford GU2 7XH</wicri:regionArea></affiliation></author><author><name sortKey="Mcguirk, B" sort="Mcguirk, B" uniqKey="Mcguirk B" first="B" last="Mcguirk">B. Mcguirk</name><affiliation wicri:level="1"><mods:affiliation>Department of Physics, University of Liverpool, Liverpool L69 3BX, UK</mods:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Department of Physics, University of Liverpool, Liverpool L69 3BX</wicri:regionArea></affiliation></author><author><name sortKey="Mandal, S" sort="Mandal, S" uniqKey="Mandal S" first="S" last="Mandal">S. Mandal</name><affiliation wicri:level="1"><mods:affiliation>GSI, Planckstrasse 1, Darmstadt D-64291, Germany</mods:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>GSI, Planckstrasse 1, Darmstadt D-64291</wicri:regionArea></affiliation></author><author><name sortKey="Paul, E S" sort="Paul, E S" uniqKey="Paul E" first="E S" last="Paul">E S Paul</name><affiliation wicri:level="1"><mods:affiliation>Department of Physics, University of Liverpool, Liverpool L69 3BX, UK</mods:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Department of Physics, University of Liverpool, Liverpool L69 3BX</wicri:regionArea></affiliation></author><author><name sortKey="Pucknell, V" sort="Pucknell, V" uniqKey="Pucknell V" first="V" last="Pucknell">V. Pucknell</name><affiliation wicri:level="1"><mods:affiliation>CLRC Daresbury Laboratory, Warrington WA4 4AD, UK</mods:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>CLRC Daresbury Laboratory, Warrington WA4 4AD</wicri:regionArea></affiliation></author><author><name sortKey="Redon, N" sort="Redon, N" uniqKey="Redon N" first="N" last="Redon">N. Redon</name><affiliation wicri:level="1"><mods:affiliation>Institut de Physique Nucleaire de Lyon, Lyon, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Institut de Physique Nucleaire de Lyon, Lyon</wicri:regionArea></affiliation></author><author><name sortKey="Rosse, B" sort="Rosse, B" uniqKey="Rosse B" first="B" last="Rosse">B. Rosse</name><affiliation wicri:level="1"><mods:affiliation>Institut de Physique Nucleaire de Lyon, Lyon, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Institut de Physique Nucleaire de Lyon, Lyon</wicri:regionArea></affiliation></author><author><name sortKey="Senior, R J" sort="Senior, R J" uniqKey="Senior R" first="R J" last="Senior">R J Senior</name><affiliation wicri:level="1"><mods:affiliation>Department of Nuclear Physics, Australian National University, Canberra, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Department of Nuclear Physics, Australian National University, Canberra</wicri:regionArea></affiliation></author><author><name sortKey="Sletten, G" sort="Sletten, G" uniqKey="Sletten G" first="G" last="Sletten">G. Sletten</name><affiliation wicri:level="1"><mods:affiliation>Niels-Bohr-Institute, DK-2100 Copenhagen, Denmark</mods:affiliation><country xml:lang="fr">Danemark</country><wicri:regionArea>Niels-Bohr-Institute, DK-2100 Copenhagen</wicri:regionArea></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Physics G: Nuclear and Particle Physics</title><title level="j" type="abbrev">J. Phys. G: Nucl. Part. Phys.</title><idno type="ISSN">0954-3899</idno><idno type="eISSN">1361-6471</idno><imprint><publisher>Institute of Physics Publishing</publisher><date type="published" when="2005">2005</date><biblScope unit="volume">31</biblScope><biblScope unit="issue">10</biblScope><biblScope unit="page" from="S1851">S1851</biblScope><biblScope unit="page" to="S1854">S1854</biblScope><biblScope unit="production">Printed in the UK</biblScope></imprint><idno type="ISSN">0954-3899</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0954-3899</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Coincidence data</term><term>Decay scheme</term><term>Exogam</term><term>Gated</term><term>Gated spectra</term><term>Matrix</term><term>Nucl</term><term>Nuclear physics</term><term>Phys</term><term>Present work</term><term>Radioactive beam</term><term>Radioactive beams</term><term>Same event</term><term>Spiral facility</term><term>Total projection</term><term>Yrast states</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Coincidence data</term><term>Decay scheme</term><term>Exogam</term><term>Gated</term><term>Gated spectra</term><term>Matrix</term><term>Nucl</term><term>Nuclear physics</term><term>Phys</term><term>Present work</term><term>Radioactive beam</term><term>Radioactive beams</term><term>Same event</term><term>Spiral facility</term><term>Total projection</term><term>Yrast states</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Physique nucléaire</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">A beam of 28 MeV 8He particles with an average intensity 2 105 ions s1, produced by the SPIRAL facility at GANIL, was used to initiate fusionevaporation reactions in thick targets of 208Pb and 209Bi. Excited states of 212Po and 213At were populated in (8He,4n) reactions. The emitted -rays were detected using the EXOGAM array composed of four Compton suppressed germanium Clover detectors in a close geometry configuration. Preliminary results show that 212Po has been populated to high spin (I 14) with a significantly increased yield compared with our previous 8He beam experiment. An apparently increased relative population of states up to 12 was observed compared with published results from a 208Pb(9Be,n)212Po reaction at 48 MeV. Evidence is presented for a previously unreported de-excitation pathway: 69 keV (13 12). States up to I (39/2) have also been observed in 213At.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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