0000000000182533

AUTHOR

T. Kuta

showing 2 related works from this author

Precision mass measurements on neutron-rich rare-earth isotopes at JYFLTRAP - reduced neutron pairing and implications for the $r$-process calculatio…

2018

The rare-earth peak in the $r$-process abundance pattern depends sensitively on both the astrophysical conditions and subtle changes in nuclear structure in the region. This work takes an important step elucidating the nuclear structure and reducing the uncertainties in $r$-process calculations via precise atomic mass measurements at the JYFLTRAP double Penning trap. $^{158}$Nd, $^{160}$Pm, $^{162}$Sm, and $^{164-166}$Gd have been measured for the first time and the precisions for $^{156}$Nd, $^{158}$Pm, $^{162,163}$Eu, $^{163}$Gd, and $^{164}$Tb have been improved considerably. Nuclear structure has been probed via two-neutron separation energies $S_{2n}$ and neutron pairing energy metrics…

Nuclear TheoryastrofysiikkaRare earthnuclear astrophysicsGeneral Physics and AstronomyFOS: Physical sciences7. Clean energy01 natural sciencesbinding energy and massesNuclear Theory (nucl-th)0103 physical sciencesNeutronNuclear Experiment (nucl-ex)010306 general physicsNuclear ExperimentSolar and Stellar Astrophysics (astro-ph.SR)PhysicsHigh Energy Astrophysical Phenomena (astro-ph.HE)Isotopeta114010308 nuclear & particles physicsNuclear structureharvinaiset maametallitPenning trapAtomic mass3. Good healthAstrophysics - Solar and Stellar Astrophysics13. Climate actionPairingr-processAtomic physicsydinfysiikkaAstrophysics - High Energy Astrophysical Phenomena
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Precision Mass Measurements on Neutron-Rich Rare-Earth Isotopes at JYFLTRAP : Reduced Neutron Pairing and Implications for r-Process Calculations

2018

The rare-earth peak in the r-process abundance pattern depends sensitively on both the astrophysical conditions and subtle changes in nuclear structure in the region. This work takes an important step towards elucidating the nuclear structure and reducing the uncertainties in r-process calculations via precise atomic mass measurements at the JYFLTRAP double Penning trap. Nd158, Pm160, Sm162, and Gd164-166 have been measured for the first time, and the precisions for Nd156, Pm158, Eu162,163, Gd163, and Tb164 have been improved considerably. Nuclear structure has been probed via two-neutron separation energies S2n and neutron pairing energy metrics Dn. The data do not support the existence of…

astrofysiikkanuclear astrophysicsharvinaiset maametallitydinfysiikkabinding energy and masses
researchProduct