Developments for resonance ionization laser spectroscopy of the heaviest elements at SHIP

Lautenschlaeger, F, Chhetri, P, Ackermann, D, Backe, H, Block, M, Cheal, B, Clark, A, Droese, C, Ferrer, R, Giacoppo, F
et al (show 11 more authors) (2016) Developments for resonance ionization laser spectroscopy of the heaviest elements at SHIP. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 383. pp. 115-122.

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The experimental determination of atomic levels and the first ionization potential of the heaviest elements (Z⩾100) is key to challenge theoretical predictions and to reveal changes in the atomic shell structure. These elements are only artificially produced in complete-fusion evaporation reactions at on-line facilities such as the GSI in Darmstadt at a rate of, at most, a few atoms per second. Hence, highly sensitive spectroscopic methods are required. Laser spectroscopy is one of the most powerful and valuable tools to investigate atomic properties. In combination with a buffer-gas filled stopping cell, the Radiation Detected Resonance Ionization Spectroscopy (RADRIS) technique provides the highest sensitivity for laser spectroscopy on the heaviest elements. The RADRIS setup, as well as the measurement procedure, have been optimized and characterized using the α-emitter 155Yb in on-line conditions, resulting in an overall efficiency well above 1%. This paves the way for a successful search of excited atomic levels in nobelium and heavier elements.

Item Type: Article
Uncontrolled Keywords: Resonance ionization spectroscopy, Gas stopping cell, Radiation Detected Resonance Ionization, Spectroscopy, Ytterbium, Nobelium
Depositing User: Symplectic Admin
Date Deposited: 26 Jun 2017 06:28
Last Modified: 19 Jan 2023 07:25
DOI: 10.1016/j.nimb.2016.06.001
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