Production of negatively charged radioactive ion beams**This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the US Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this

Y Liu,D W Stracener,T Stora

doi:10.1088/1367-2630/aa609c

Abstract

Beams of short-lived radioactive nuclei are needed for frontier experimental research in nuclear structure, reactions, and astrophysics. Negatively charged radioactive ion beams have unique advantages and allow for the use of a tandem accelerator for post-acceleration, which can provide the highest beam quality and continuously variable energies. Negative ion beams can be obtained with high intensity and some unique beam purification techniques based on differences in electronegativity and chemical reactivity can be used to provide beams with high purity. This article describes the production of negative radioactive ion beams at the former holifield radioactive ion beam facility at Oak Ridge National Laboratory and at the CERN ISOLDE facility with emphasis on the development of the negative ion sources employed at these two facilities.

Highlights

The study of radioactive nuclei far from stability is at the very frontier of nuclear science [1, 2]
Research with these exotic nuclei addresses a wide range of important topics in fundamental nuclear science, including the underlying nature and stability of atomic nuclei, the origin of elements, the evolution of the cosmos, and tests of current models for the fundamental interactions that are basic to the structure of matter
The present paper describes the research and development that has been conducted at the former HRIBF and the ISOLDE facility for the production and purification of negative radioactive ion beams (RIBs) for fundamental and applied research

Summary

24 August 2017

Original content from this Abstract work may be used under Beams of short-lived radioactive nuclei are needed for frontier experimental research in nuclear the terms of the Creative Commons Attribution 3.0 structure, reactions, and astrophysics. Charged radioactive ion beams have unique licence. Advantages and allow for the use of a tandem accelerator for post-acceleration, which can provide the. Any further distribution of this work must maintain highest beam quality and continuously variable energies. Negative ion beams can be obtained with attribution to the author(s) and the title of high intensity and some unique beam purification techniques based on differences in electronegativity the work, journal citation and chemical reactivity can be used to provide beams with high purity. Oak Ridge National Laboratory and at the CERN ISOLDE facility with emphasis on the development of the negative ion sources employed at these two facilities

Introduction

Methods of negative ion formation

Production of negative RIBs at HRIBF

Negative-ion sources for the production of RIBs

Beam purification with negative ions

Findings

Future