One-phonon states of vibrational nuclei with mixed proton–neutron symmetry have been observed throughout the nuclear chart besides the mass A≈200 region. Very recently, it has been proposed that the 22+ state of 212 Po is of isovector nature. This nucleus has two valence protons and two valence neutrons outside the doubly-magic 208 Pb nucleus. The stable isotope 204 Hg, featuring two valence-proton and valence-neutron holes, with respect to 208 Pb, is the particle-hole mirror of 212 Po. In order to compare the properties of low-lying isovector excitations in these particle-hole mirror nuclei, we have studied 204 Hg by using the projectile Coulomb-excitation technique. The measured absolute B(M1;22+→21+) strength of 0.20(2)μN2 indicates that the 22+ level of 204 Hg is at least the main fragment of the 21,ms+ state. For the first time in this mass region, both lowest-lying, one-quadrupole phonon excitations are established together with the complete set of their decay strengths. This allows for a microscopic description of their structures, achieved in the framework of the Quasi-particle Phonon Model.
{
"license": [
{
"url": "http://creativecommons.org/licenses/by/3.0/",
"license": "CC-BY-3.0"
}
],
"copyright": [
{
"statement": "The Authors"
}
],
"control_number": "19793",
"_oai": {
"updated": "2018-04-18T13:12:19Z",
"id": "oai:repo.scoap3.org:19793",
"sets": [
"PLB"
]
},
"authors": [
{
"raw_name": "Stegmann, R.",
"affiliations": [
{
"country": "Germany",
"value": "Institut f\u00fcr Kernphysik, Technische Universit\u00e4t Darmstadt, Darmstadt, Germany"
}
],
"surname": "Stegmann",
"given_names": "R.",
"full_name": "Stegmann, R."
},
{
"raw_name": "Stahl, C.",
"affiliations": [
{
"country": "Germany",
"value": "Institut f\u00fcr Kernphysik, Technische Universit\u00e4t Darmstadt, Darmstadt, Germany"
}
],
"surname": "Stahl",
"given_names": "C.",
"full_name": "Stahl, C."
},
{
"raw_name": "Rainovski, G.",
"affiliations": [
{
"country": "Bulgaria",
"value": "Faculty of Physics, University of Sofia, St. Kliment Ohridski, Sofia, Bulgaria"
}
],
"surname": "Rainovski",
"given_names": "G.",
"full_name": "Rainovski, G."
},
{
"raw_name": "Pietralla, N.",
"affiliations": [
{
"country": "Germany",
"value": "Institut f\u00fcr Kernphysik, Technische Universit\u00e4t Darmstadt, Darmstadt, Germany"
}
],
"surname": "Pietralla",
"given_names": "N.",
"full_name": "Pietralla, N."
},
{
"surname": "Stoyanov",
"given_names": "C.",
"raw_name": "Stoyanov, C.",
"affiliations": [
{
"country": "Bulgaria",
"value": "Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia, Bulgaria"
}
],
"full_name": "Stoyanov, C.",
"orcid": "0000-0003-0835-9432"
},
{
"raw_name": "Carpenter, M.P.",
"affiliations": [
{
"country": "USA",
"value": "Physics Division, Argonne National Laboratory, Argonne, USA"
}
],
"surname": "Carpenter",
"given_names": "M.P.",
"full_name": "Carpenter, M.P."
},
{
"raw_name": "Janssens, R.V.F.",
"affiliations": [
{
"country": "USA",
"value": "Physics Division, Argonne National Laboratory, Argonne, USA"
}
],
"surname": "Janssens",
"given_names": "R.V.F.",
"full_name": "Janssens, R.V.F."
},
{
"raw_name": "Lettmann, M.",
"affiliations": [
{
"country": "Germany",
"value": "Institut f\u00fcr Kernphysik, Technische Universit\u00e4t Darmstadt, Darmstadt, Germany"
}
],
"surname": "Lettmann",
"given_names": "M.",
"full_name": "Lettmann, M."
},
{
"raw_name": "M\u00f6ller, T.",
"affiliations": [
{
"country": "Germany",
"value": "Institut f\u00fcr Kernphysik, Technische Universit\u00e4t Darmstadt, Darmstadt, Germany"
}
],
"surname": "M\u00f6ller",
"given_names": "T.",
"full_name": "M\u00f6ller, T."
},
{
"raw_name": "M\u00f6ller, O.",
"affiliations": [
{
"country": "Germany",
"value": "Institut f\u00fcr Kernphysik, Technische Universit\u00e4t Darmstadt, Darmstadt, Germany"
}
],
"surname": "M\u00f6ller",
"given_names": "O.",
"full_name": "M\u00f6ller, O."
},
{
"raw_name": "Werner, V.",
"affiliations": [
{
"country": "Germany",
"value": "Institut f\u00fcr Kernphysik, Technische Universit\u00e4t Darmstadt, Darmstadt, Germany"
}
],
"surname": "Werner",
"given_names": "V.",
"full_name": "Werner, V."
},
{
"raw_name": "Zhu, S.",
"affiliations": [
{
"country": "USA",
"value": "Physics Division, Argonne National Laboratory, Argonne, USA"
}
],
"surname": "Zhu",
"given_names": "S.",
"full_name": "Zhu, S."
}
],
"_files": [
{
"checksum": "md5:fdf67e82918420e24e43b5f33be1c58b",
"filetype": "xml",
"bucket": "51a04c9c-8d3a-43b6-97c5-2b6038f09d70",
"version_id": "70f55ca1-9910-4bb3-98f4-13ee4edee01f",
"key": "10.1016/j.physletb.2017.04.032.xml",
"size": 175830
},
{
"checksum": "md5:1edb30bd025c40d22488f6c03758656f",
"filetype": "pdf",
"bucket": "51a04c9c-8d3a-43b6-97c5-2b6038f09d70",
"version_id": "1a742c34-8771-48a1-8fb3-92561c634081",
"key": "10.1016/j.physletb.2017.04.032.pdf",
"size": 675048
},
{
"checksum": "md5:0abca04dd08215db173102f0b0cade6c",
"filetype": "pdf/a",
"bucket": "51a04c9c-8d3a-43b6-97c5-2b6038f09d70",
"version_id": "69f16b46-e37a-4b67-8904-0d3628fb07d8",
"key": "10.1016/j.physletb.2017.04.032_a.pdf",
"size": 1018199
}
],
"record_creation_date": "2017-04-19T00:00:00",
"titles": [
{
"source": "Elsevier",
"title": "Identification of the one-quadrupole phonon 21,ms+ state of 204 Hg"
}
],
"dois": [
{
"value": "10.1016/j.physletb.2017.04.032"
}
],
"publication_info": [
{
"journal_title": "Physics Letters B",
"material": "article",
"year": 2017
}
],
"$schema": "http://repo.scoap3.org/schemas/hep.json",
"abstracts": [
{
"source": "Elsevier",
"value": "One-phonon states of vibrational nuclei with mixed proton\u2013neutron symmetry have been observed throughout the nuclear chart besides the mass A\u2248200 region. Very recently, it has been proposed that the 22+ state of 212 Po is of isovector nature. This nucleus has two valence protons and two valence neutrons outside the doubly-magic 208 Pb nucleus. The stable isotope 204 Hg, featuring two valence-proton and valence-neutron holes, with respect to 208 Pb, is the particle-hole mirror of 212 Po. In order to compare the properties of low-lying isovector excitations in these particle-hole mirror nuclei, we have studied 204 Hg by using the projectile Coulomb-excitation technique. The measured absolute B(M1;22+\u219221+) strength of 0.20(2)\u03bcN2 indicates that the 22+ level of 204 Hg is at least the main fragment of the 21,ms+ state. For the first time in this mass region, both lowest-lying, one-quadrupole phonon excitations are established together with the complete set of their decay strengths. This allows for a microscopic description of their structures, achieved in the framework of the Quasi-particle Phonon Model."
}
],
"imprints": [
{
"date": "2017-04-20",
"publisher": "Elsevier"
}
],
"acquisition_source": {
"date": "2017-04-19T00:00:00",
"source": "Elsevier",
"method": "scoap3",
"submission_number": "37226564430511e898b102163e01809a"
}
}