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Bewley GP, Paoletti MS, Sreenivasan KR, et al. Characterization of reconnecting vortices in superfluid helium. Proc Natl Acad Sci U S A. 2008;105(37):13707-10doi: 10.1073/pnas.0806002105.
Bewley, G. P., Paoletti, M. S., Sreenivasan, K. R., & Lathrop, D. P. (2008). Characterization of reconnecting vortices in superfluid helium. Proceedings of the National Academy of Sciences of the United States of America, 105(37), 13707-10. https://doi.org/10.1073/pnas.0806002105
Bewley, Gregory P, et al. "Characterization of reconnecting vortices in superfluid helium." Proceedings of the National Academy of Sciences of the United States of America vol. 105,37 (2008): 13707-10. doi: https://doi.org/10.1073/pnas.0806002105
Bewley GP, Paoletti MS, Sreenivasan KR, Lathrop DP. Characterization of reconnecting vortices in superfluid helium. Proc Natl Acad Sci U S A. 2008 Sep 16;105(37):13707-10. doi: 10.1073/pnas.0806002105. Epub 2008 Sep 03. PMID: 18768790; PMCID: PMC2544517.
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Proc Natl Acad Sci U S A. 2008 Sep 16;105(37):13707-10. doi: 10.1073/pnas.0806002105. Epub 2008 Sep 03.

Characterization of reconnecting vortices in superfluid helium.

Proceedings of the National Academy of Sciences of the United States of America

Gregory P Bewley, Matthew S Paoletti, Katepalli R Sreenivasan, Daniel P Lathrop

Affiliations

  1. University of Maryland, College Park, MD 20740, USA.

PMID: 18768790 PMCID: PMC2544517 DOI: 10.1073/pnas.0806002105

Abstract

When two vortices cross, each of them breaks into two parts and exchanges part of itself for part of the other. This process, called vortex reconnection, occurs in classical and superfluids, and in magnetized plasmas and superconductors. We present the first experimental observations of reconnection between quantized vortices in superfluid helium. We do so by imaging micrometer-sized solid hydrogen particles trapped on quantized vortex cores and by inferring the occurrence of reconnection from the motions of groups of recoiling particles. We show that the distance separating particles on the just-reconnected vortex lines grows as a power law in time. The average value of the scaling exponent is approximately 1/2, consistent with the self-similar evolution of the vortices.

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