Apparatus for in-beam hyperfine interactions and g-factor measurements: Design and operation

A. E. Stuchbery; A. B. Harding; D. C. Weisser; N. R. Lobanov

doi:10.1016/j.nima.2019.162985

Apparatus for in-beam hyperfine interactions and g-factor measurements: Design and operation

A. E. Stuchbery^*, A. B. Harding, D. C. Weisser, N. R. Lobanov

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

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 ∼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-γ 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.

Original language	English
Article number	162985
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	951
DOIs	https://doi.org/10.1016/j.nima.2019.162985
Publication status	Published - 21 Jan 2020

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10.1016/j.nima.2019.162985

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title = "Apparatus for in-beam hyperfine interactions and g-factor measurements: Design and operation",

abstract = "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 ∼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-γ 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.",

keywords = "Coulomb excitation, Hyperfine interaction, Perturbed angular correlation, Transient field, g factor",

author = "Stuchbery, {A. E.} and Harding, {A. B.} and Weisser, {D. C.} and Lobanov, {N. R.}",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2020",

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day = "21",

doi = "10.1016/j.nima.2019.162985",

language = "English",

volume = "951",

journal = "Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",

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publisher = "Elsevier B.V.",

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Apparatus for in-beam hyperfine interactions and g-factor measurements: Design and operation. / Stuchbery, A. E.; Harding, A. B.; Weisser, D. C. et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 951, 162985, 21.01.2020.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Apparatus for in-beam hyperfine interactions and g-factor measurements

T2 - Design and operation

AU - Stuchbery, A. E.

AU - Harding, A. B.

AU - Weisser, D. C.

AU - Lobanov, N. R.

PY - 2020/1/21

Y1 - 2020/1/21

N2 - 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 ∼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-γ 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.

AB - 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 ∼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-γ 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.

KW - Coulomb excitation

KW - Hyperfine interaction

KW - Perturbed angular correlation

KW - Transient field

KW - g factor

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U2 - 10.1016/j.nima.2019.162985

DO - 10.1016/j.nima.2019.162985

M3 - Article

SN - 0168-9002

VL - 951

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

M1 - 162985

ER -

Apparatus for in-beam hyperfine interactions and g-factor measurements: Design and operation

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