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Isospin Mixing in Zr-80: From Finite to Zero Temperature
Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.;Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy..
Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.;Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy..
Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.;Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy..
Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.;Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy..
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2015 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 115, no 22, 222502Article in journal (Refereed) Published
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Abstract [en]

The isospin mixing was deduced in the compound nucleus Zr-80 at an excitation energy of E* = 54 MeV from the gamma decay of the giant dipole resonance. The reaction Ca-40 + Ca-40 at E-beam = 136 MeV was used to form the compound nucleus in the isospin I = 0 channel, while the reaction Cl-37 + Ca-44 at E-beam = 95 MeV was used as the reference reaction. The. rays were detected with the AGATA demonstrator array coupled with LaBr3:Ce detectors. The temperature dependence of the isospin mixing was obtained and the zero-temperature value deduced. The isospin-symmetry-breaking correction delta(C) used for the Fermi superallowed transitions was extracted and found to be consistent with beta-decay data.

Place, publisher, year, edition, pages
2015. Vol. 115, no 22, 222502
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Physical Sciences
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URN: urn:nbn:se:uu:diva-271018DOI: 10.1103/PhysRevLett.115.222502ISI: 000365525400010OAI: oai:DiVA.org:uu-271018DiVA: diva2:892545
Available from: 2016-01-11 Created: 2016-01-05 Last updated: 2017-12-01Bibliographically approved

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