Atomic masses of intermediate-mass neutron-deficient nuclei with relative uncertainty down to 35-ppb via multireflection time-of-flight mass spectrograph

2017/06/30 by Shin‐ichi Kimura, S. Kimura, Y. Ito +22 · 1 citation
Chemistry · Physics and Astronomy · #Analytical Chemistry (journal) #Astronomical and nuclear sciences #Atomic mass #Atomic physics #Chemistry #Ion #Ionization #Mass #Mass number #Mass spectrometry #Mass spectrum #Neutron #Nuclear Physics and Applications #Nuclear physics #Nuclear physics research studies #Physics #Recoil #Spectrograph #Time of flight #Time-of-flight mass spectrometry #nucl-ex

paper · pdf · doi:10.1016/j.ijms.2018.05.001

15 pages, 6 figures, 1 table

arxiv created 2018/03/01 · openalex publication_date 2018/05/05 · arxiv updated 2018/07/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

Abstract

High-precision mass measurements of ⁶³Cu, ^64-66Zn, ⁶⁵Ga, ^65-67Ge, ⁶⁷As, ^78,81Br, ⁸⁰Rb, and ⁷⁹Sr were performed utilizing a multireflection time-of-flight mass spectrograph combined with the gas-filled recoil ion separator GARIS-II. In the case of ⁶⁵Ga, a mass uncertainty of 2.1 keV, corresponding to a relative precision of δm / m = 3.5×10^-8, was obtained and the mass value is in excellent agreement with the 2016 Atomic Mass Evaluation. For ⁶⁷Ge and ⁸¹Br, where masses were previously deduced through indirect measurements, discrepancies with literature values were found. The feasibility of using this device for mass measurements of nuclides more neutron-deficient side, which have significant impact on the rp-process pathway, is discussed.

Citations

• A large Bradbury Nielsen ion gate with flexible wire spacing based on photo-etched stainless steel grids and its characterization applying symmetric and asymmetric potentials
• The AME2016 atomic mass evaluation (II). Tables, graphs and references

Cited by

• Nuclear spectroscopy of r-process nuclei using KEK Isotope Separation System