Статья

First observation of the drip line nucleus<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow/><mml:mrow><mml:mn>140</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mi mathvariant="normal">Dy</mml:mi><mml:mo>:</mml:mo></mml:math>Identification of a<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>7</mml:mn><mml:mi> </mml:mi><mml:mi>μ</mml:mi><mml:mi mathvariant="normal">s</mml:mi><mml:mi> </mml:mi><mml:mi>K</mml:mi></mml:math>isomer populating the ground state band

W. KrólasDepartment of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235R. GrzywaczInstitute of Experimental Physics, Warsaw University, PL-00681, Warsaw, PolandK. P. RykaczewskiOak Ridge High School, Oak Ridge, Tennessee 37830J. C. BatchelderUNIRIB, Oak Ridge Associated Universities, Oak Ridge, Tennessee 37831C. R. BinghamDepartment of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996C. J. GrossOak Ridge Institute for Science and Education, Oak Ridge, Tennessee 37831D. FongDepartment of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235J. H. HamiltonDepartment of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235D. J. HartleyDepartment of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996J. K. HwangDepartment of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235Y. LarochelleDepartment of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996T. A. LewisPhysics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831K.H. MaierJoint Institute for Heavy Ion Research, Oak Ridge, Tennessee 37831J.W. McConnellJoint Institute for Heavy Ion Research, Oak Ridge, Tennessee 37831A. PiechaczekDepartment of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803A. V. RamayyaDepartment of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235K. RykaczewskiInstitute of Experimental Physics, Warsaw University, PL-00681, Warsaw, PolandD. ShapiraPhysics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831Mohammed Noor TantawyDepartment of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996J. A. WingerDepartment of Physics and Astronomy, Mississippi State University, Mississippi State, Mississippi 39762C.-H. YuPhysics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831E. F. ZganjarDepartment of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803A. T. KruppaInstitute of Nuclear Research of the Hungarian Academy of Sciences, H-4001, Debrecen, HungaryW. NazarewiczDepartment of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996T. VertseInstitute of Nuclear Research of the Hungarian Academy of Sciences, H-4001, Debrecen, Hungary

2002lv

ABI

Аннотация

A new $7 \ensuremath{\mu}\mathrm{s}$ isomer in the drip line nucleus ${}^{140}\mathrm{Dy}$ was selected from the products of the ${}^{54}\mathrm{Fe}$ $(315 \mathrm{MeV}{)+}^{92}\mathrm{Mo}$ reaction by a recoil mass spectrometer and studied with recoil-delayed $\ensuremath{\gamma}\ensuremath{-}\ensuremath{\gamma}$ coincidences. Five cascading $\ensuremath{\gamma}$ transitions were interpreted as the decay of an ${I}^{\ensuremath{\pi}}{=8}^{\ensuremath{-}}$ ${\ensuremath{\nu}{9/2}^{\ensuremath{-}}[514]\ensuremath{\bigotimes}\ensuremath{\nu}{7/2}^{+}[404]}$ K isomer $({T}_{1/2}=7.0(5) \ensuremath{\mu}\mathrm{s})$ via the ground-state band. The probability of proton emission from ${}^{141}\mathrm{Ho}$ to the ${0}^{+}$ ground state and to the ${2}^{+}$ excited state in ${}^{140}\mathrm{Dy}$ is discussed.

Перевод пока недоступен

Идентификаторы

DOI: 10.1103/physrevc.65.031303

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar