Particle identification and revolution time corrections for the isochronous mass spectrometry in storage rings

Abstract

In the isochronous mass spectrometry (IMS) performed at storage rings, masses of short-lived nuclides are determined through precision measurements of their mean revolution times. However, the distribution of revolution times could be seriously deteriorated by instabilities of the ring's magnetic fields. This becomes a significant obstacle for the particle identifications and mass determinations. A data analysis method is described in this paper which is able to largely remove the uncertainties caused by the magnetic field instabilities in the particle identifications and the mean revolution times. We show that this method is very effective for the IMS experiments even when the magnetic fields of a storage ring vary slowly up to a level of $\Delta B/B\sim 10^{-4}$.

arXiv comment11 pages, 13 figures

References in corpus (8)

• Isochronous mass measurements of $T_z=-1$ $fp$-shell nuclei from projectile fragmentation of ${}^{58}$Ni
• Identification of the Lowest $T=2$, $J^{\pi =}{0}^{+}$ Isobaric Analog State in ${}^{52}$Co and Its Impact on the Understanding of $\beta$-Decay Properties of ${}^{52}$Ni
• Mass Measurements of Neutron-Deficient Y, Zr, and Nb Isotopes and Their Impact on $rp$ and $\nu p$ Nucleosynthesis Processes
• An improvement of isochronous mass spectrometry: Velocity measurements using two time-of-flight detectors
• Isochronicity Correction in the CR Storage Ring
• A method to measure the transition energy ${\gamma }_t$ of the isochronously tuned storage ring
• The Masses of the $T_z=-3/2$ Nuclei ${}^{27}$P and ${}^{29}$S
• Accurate correction of magnetic field instabilities for high-resolution isochronous mass measurements in storage rings

Cited by in corpus (6)

• Heavy-Ion Storage Rings and Their Use in Precision Experiments with Highly Charged Ions
• $B\rho$-defined Isochronous Mass Spectrometry and Mass Measurements of ${}^{58}$Ni Fragments
• $B\rho$-defined isochronous mass spectrometry: a new approach for high-precision mass measurements of short-lived nuclei
• Masses of ground and isomeric states of ${}^{101}$In and configuration-dependent shell evolution in odd-$A$ indium isotopes
• Charge resolution in the isochronous mass spectrometry and the mass of ${}^{51}$Co
• A novel method of half-life determination for highly charged ions based on isochronous mass spectrometry