High-resolution laser spectroscopy of long-lived plutonium isotopes



Voss, A, Sonnenschein, V, Campbell, P, Cheal, B, Kron, T, Moore, ID, Pohjalainen, I, Raeder, S, Trautmann, N and Wendt, K
(2017) High-resolution laser spectroscopy of long-lived plutonium isotopes. PHYSICAL REVIEW A, 95 (3). 032506-.

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Abstract

Long-lived isotopes of plutonium were studied using two complementary techniques, high-resolution resonance ionisation spectroscopy (HR-RIS) and collinear laser spectroscopy (CLS). Isotope shifts have been measured on the $5f^67s^2\ ^7F_0 \rightarrow 5f^56d^27s\ (J=1)$ and $5f^67s^2\ ^7F_1 \rightarrow 5f^67s7p\ (J=2)$ atomic transitions using the HR-RIS method and the hyperfine factors have been extracted for the odd mass nuclei $^{239,241}$Pu. Collinear laser spectroscopy was performed on the $5f^67s\ ^8F_{1/2} \rightarrow J=1/2\; (27523.61\text{cm}^{-1})$ ionic transition with the hyperfine $A$ factors measured for $^{239}$Pu. Changes in mean-squared charge radii have been extracted and show a good agreement with previous non-optical methods, with an uncertainty improvement by approximately one order of magnitude. Plutonium represents the heaviest element studied to date using collinear laser spectroscopy.

Item Type: Article
Additional Information: accepted by Phys. Rev. A (2017-03-02)
Uncontrolled Keywords: nucl-ex, nucl-ex, physics.atom-ph
Depositing User: Symplectic Admin
Date Deposited: 16 Jan 2020 08:43
Last Modified: 19 Jan 2023 00:09
DOI: 10.1103/PhysRevA.95.032506
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3070725