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Decay properties of new isotopes $$^{235}$$Bk and $$^{231}$$Am

Wang, J. G.*; Zhang, Z. Y.*; Andreyev, A. N.; 33 of others*

The new isotopes $$^{235}$$Bk and $$^{231}$$Am were investigated using the gas-filled recoil separator SHANS2. They were identified by measuring radioactive decay chains originating from $$^{235}$$Bk produced via the $$^{197}$$Au($$^{40}$$Ar,2n)$$^{235}$$Bk reaction. The $$alpha$$ energy and half-life were determined for these isotopes. A systematic analysis reveals significant discrepancies between the experimental data and the theoretical predictions for the isotopes of Bk and Am, which warrant further investigation.

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English

Journal

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Physics Letters B

Volume

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875

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Pages

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p.140365_1 - 140365_6

Publication Year/Month

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2026/04

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Paper URL

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https://doi.org/10.1016/j.physletb.2026.140365

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Link to research data related to this paper/report.

Keywords

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Bk-235; Am-231; Alpha decay; New isotope; SHANS2

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Press Release

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JAEA R&D Navigator

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Cooperating Institute

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University of York; Institute of Modern Physics, CAS

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- Accesses

InCites™

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Percentile:81.50

Category:Astronomy & Astrophysics

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