First Penning Trap Mass Measurements beyond the Proton Drip Line

2007/01/22 by C. Rauth, D. Ackermann, K. Blaum +29 · 3 citations
Physics and Astronomy · #Astronomical and nuclear sciences #Atomic and Molecular Physics #Nuclear physics research studies #nucl-ex

paper · pdf · doi:10.1103/physrevlett.100.012501

published as Phys.Rev.Lett.100:012501,2008

arxiv created 2007/01/22 · openalex publication_date 2008/01/10 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The masses of six neutron-deficient rare holmium and thulium isotopes close to the proton drip line were determined with the SHIPTRAP Penning trap mass spectrometer. For the first time the masses of the proton-unbound isotopes 144,145Ho and 147,148Tm were directly measured. The proton separation energies were derived from the measured mass values and compared to predictions from mass formulas. The new values of the proton separation energies are used to determine the location of the proton drip line for holmium and thulium more accurately.

Citations

• The discovery of the heaviest elements

Cited by

• Machine learning meets complex networks via coalescent embedding in the hyperbolic space
• Dirac-Hartree-Fock studies of X-ray transitions in meitnerium
• Penning traps as a versatile tool for precise experiments in fundamental physics