As of 2026-09-11 · the last 10 years
Berkelium’s research intensity has held steady at about 10% of its all-time peak, a level that has remained constant since the element’s historical high in 1959.
Research intensity ran from about 10% of the element's own all-time peak in 2016 to about 10% in 2026 — essentially flat across the window, and the all-time peak (1959) lies before this window. Over the same span its share of research attention across all elements rose. Among the 118 elements, berkelium has one of the smaller research literatures of any element.
The number of papers involving the element rose from about 23 in 2016 to about 39 in 2025 (1.7x). That is slower than the literature as a whole grew over the same years, so the element lost ground in the wider body of research even as its own count rose.
The core of berkelium research remains its specific chemical behavior, particularly the study of carbon bonding in berkelium complexes and its relationship to californium. This work focuses on actinide electronic structure rather than nuclear fuel applications. While berkelium is a minor presence in this broader community of actinide chemistry—under 1% of its papers involve berkelium—it accounts for about 52% of the element's recent research. This share has declined from about 59% in the previous period. A key recent contribution is a 2025 paper in Science on berkelium–carbon bonding in a tetravalent berkelocene, cited about 18 times.
A significant shift is occurring toward the synthesis and decay of superheavy elements and heavy-ion collision physics. In this field, berkelium serves as a target or component in reactions aimed at creating heavier nuclei, with work examining element synthesis and sequential fission dynamics. Berkelium is a minor presence here as well, with about 1% of papers involving the element, but its share of berkelium-specific research has risen sharply to about 39%, up from about 22% in the earlier period. This growth is anchored by a 2023 Nature Communications paper on colliding heavy nuclei, cited about 25 times, and a 2020 Physical Review C study on entrance channel dependent hot fusion reactions, cited about 58 times.
A third area, uranium extraction, separation, and nuclear fuel cycle chemistry, has seen its share of berkelium research drop to zero in the current period, down from about 6% previously. This community is defined by broader nuclear fuel cycle processes where berkelium is a trace component. A 2019 publication on occupational intakes of radionuclides, cited about 97 times, represents the most cited work in this category for the window.
Overall, the literature is consolidating around superheavy element synthesis while maintaining a steady focus on fundamental actinide chemistry, with the element's share of attention in these specific niches shifting significantly over the last decade. For a deeper look at the current state of this research, see the element's Last 12 Months report.
What changed in the past year: new papers, shifting applications, emerging collaborators. See the momentum over a shorter window than the decade view.
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A by-topic status read of what changed and what's new — built for decision-makers, not search engines. Citation clusters, emerging applications, and the papers that matter most.
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Showing Berkelium's three strongest connections. Personal opens the slider and the whole 118-element graph.