An anomalous rotational band in 161Er

Hagemann, K.A.; Hjorth, S.A.; Ryde, H.; Ohlsson, Hélène

doi:10.1016/0370-2693(69)90215-9

Cited by 16 publications

(2 citation statements)

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“…In the course of the investigation, we noticed some deviations in the spectra of the γ-ray lines in the rotational bands. For instance, in the paper [6], we reported on a measurement of the 160 Dy(α, 3n) 161 Er reaction. The rotational band we observed for 161 Er deviated somewhat from what was expected with increasing spin.…”

Section: Unexpected Deviations and Discussion With Theoristsmentioning

confidence: 99%

“…In connection with these developments, Stephens and Simon submitted a paper in November 1971 that presented a detailed theoretical work on the Coriolis effects at high angular momentum in nuclear systems [19]. One aim of this paper was to explain the experimental observations that we had made, first in [6], and later in [9]. Among other things, they discuss the formation of the S-shape curves of the back-bending phenomenon that were being observed experimentally.…”

Section: Early Interpretations and Developmentsmentioning

confidence: 98%

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Chronicle of the discovery of the back-bending phenomenon in atomic nuclei: a personal recollection 50 years on

Ryde

2021

EPJ H

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A chronicle describing the historical context and the development of ideas and experiments leading to the discovery of the back-bending phenomenon in rapidly rotating atomic nuclei some 50 years ago is presented. The moment of inertia of some atomic nuclei increases anomalously at a certain rotational frequency, revealing important clues to our understanding of nuclear structure. I highlight the decisive interactions and contacts between experimentalists and theorists, which created the right environment, allowing for the revelation of an undetected phenomenon in Nature. Finally, I reflect on the key points allowing for the discovery and particularly point to the importance of systematic surveys, which in this case investigated the energy levels in heavy nuclei of a large sample of elements, as well as to the accuracy of the measurements of the ground state levels made at the time.

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Section: Unexpected Deviations and Discussion With Theoristsmentioning

confidence: 99%