Towards the Limits of Stability — New Decay Study of the Lightest Mendeleviums
Year: 2026
Type: conference-abstract
Abstract: Recent decay studies of \(^{244,245}\)Md at the GSI Helmholtzzentrum für Schwerionenforschung, Germany, and at the Lawrence Berkeley National Laboratory (LBNL) reported conflicting mass assignments to similar \(\alpha \)‑decay energies. This prompted a new experiment at the Fragment Mass Analyzer (FMA) at Argonne National Laboratory. Using the reaction \(^{209}\mathrm {Bi}(^{40}\mathrm {Ar},xn)^{249-x}\mathrm {Md}\), we performed simultaneous \(A/q\) identification and \(\alpha \)-decay energy measurement for neutron-deficient Md isotopes. Correlated recoil-\(\alpha \)-decay chains belonging to \(^{247}\)Md and \(^{245}\)Md were identified. Probabilistic mass identification was performed from focal-plane position using a test reaction, yielding consistent \(A=247\) and \(A=245\) mass assignments within uncertainties. This study re-examines the production cross sections, decay energies, and isotopic assignments for the \(^{247}\)Md and \(^{245}\)Md nuclei. Abstract Published by the Jagiellonian University 2026 authors
Authors: S. Kumar, D. Ackermann, J. Piot, D. Seweryniak, V. Karayonchev, S. Antalic, Ch. Stodel, A. Bahini, B. Andel, K. Bhatt, C. Burns, M. Carpenter, R. Chakma, A. Ertoprak, K. Hauschild, F.G. Kondev, A. Korichi, T. Lauritsen, A. Lopez-Martens, A. McFarlane, J. Mišt, C. Müller-Gatermann, D. Potterveld, S. Raeder, W. Reviol, H. Savajols, N. Sensharma, R.S. Sidhu, M. Siciliano, B. Sulignano
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7144093767
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