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The Teller-Ulam Innovation at 75: An Idea that Changed the World and Disputes over Credit
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DOI：10.1080/15361055.2025.2602412.png)
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Abstract
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The 1951 Teller-Ulam breakthrough led to the 1952 invention of the hydrogen bomb and set the template for subsequent thermonuclear weapons designs that have played a pivotal role in geopolitics. In the years that followed, disputes arose as to how credit should be apportioned. This article surveys the claims made by Teller and Ulam, as well as by top U.S. scientists who were working with them on the H-bomb project at Los Alamos, drawing on many sources that are not widely available. It is hoped that these documented opinions of key scientific leaders (Bethe, Wheeler, Bradbury, Garwin, and so on), together with the cover page of the H-bomb patent, will be of interest to readers. The opinions vary widely, and even Teller and Ulam changed their assessments with time, becoming more convinced of their own dominant role as they aged. The average of the opinions is that Teller deserves about two-thirds of the credit and Ulam, one-third. While these disputes might detract from the elegance of scientific progress, they do show that advances occur from collaboration, competition, and varying lines of attack; indeed, the key contributors to this innovation might be better named as Teller-Ulam-Fermi-Konopinski-de Hoffmann.
Keywords:
Thermonuclear
fusion
H-bomb
Cold War
Los Alamos
Journal
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IF:
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2.7K
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