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Apparatus for in-beam hyperfine interactions and \(g\)-factor measurements: design and operation

The design and operation of apparatus for measurements of in-beam hyperfine interactions and nuclear excited-state \(g\) factors is described. This apparatus enables a magnetic field of about 0.1 tesla to be applied to the target and the target temperature to be set between \(\sim 4\) K and room tem...

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Bibliographic Details
Published in:arXiv.org 2019-10
Main Authors: Stuchbery, A E, Harding, A B, Weisser, D C, Lobanov, N R
Format: Article
Language:English
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Summary:The design and operation of apparatus for measurements of in-beam hyperfine interactions and nuclear excited-state \(g\) factors is described. This apparatus enables a magnetic field of about 0.1 tesla to be applied to the target and the target temperature to be set between \(\sim 4\) K and room temperature. Design concepts are developed mainly in terms of transient-field \(g\)-factor measurements following Coulomb excitation by the implantation perturbed angular correlation (IMPAC) technique. The formalism for perturbed angular correlations is outlined and a figure of merit for optimizing these measurements is derived to inform design. Particle detection is based on the use of silicon photodiodes of rectangular shape. The particle-\(\gamma\) angular correlation formalism for this case is described. The experimental program to date includes temperature-dependent studies of hyperfine fields, transient-field \(g\)-factor measurements, and time-dependent perturbed angular distribution (TDPAD) studies.
ISSN:2331-8422
DOI:10.48550/arxiv.1910.11937