Eur. Phys. J. Special Topics 150, 337-341 (2007)
https://doi.org/10.1140/epjst/e2007-00340-3

Penning trap mass measurements of rare isotopes produced by projectile fragmentation with LEBIT at NSCL

¹ National Superconducting Cyclotron Laboratory NSCL, Michigan State University, East Lansing, MI, 48824-1321, USA
² Department of Physics & Astronomy, Michigan State University, East Lansing, MI, 48824-1321, USA
³ Department of Chemistry, Michigan State University, East Lansing, MI, 48824-1321, USA

Corresponding author: bollen@nscl.msu.edu

Received: 31 January 2007
Published online: 8 December 2007

Abstract

The Low-Energy Beam and Ion Trap facility LEBIT at the NSCL at MSU has demonstrated that rare isotopes produced by fast-beam fragmentation can be slowed down and prepared for precision experiments with low-energy beams. High-pressure gas-stopping was combined with advanced ion manipulation techniques to carry out these studies with a high-precision 9.4-Tesla Penning trap mass spectrometer. The spectrometer has been used for a series of high precision mass measurements of short-lived neutron- and proton-rich isotopes during the past year. This paper presents an overview of the LEBIT facility and summarizes the first mass measurement results. The mass measurements of ⁸¹Se, where ground and isomeric states have been resolved, and of ⁸⁰As will be discussed in detail.