Experimental verification of the Landau-Lifshitz equation

C. F. Nielsen; J. B. Justesen; A. H. Sorensen; U. I. Uggerhoj; R. Holtzapple

doi:10.1088/1367-2630/ac1554

Experimental verification of the Landau-Lifshitz equation

C. F. Nielsen^*, J. B. Justesen, A. H. Sorensen, U. I. Uggerhoj, R. Holtzapple

^*Corresponding author for this work

Department of Physics and Astronomy

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

7 Citations (Scopus)

Abstract

The Landau-Lifshitz (LL) equation has been proposed as the classical equation to describe the dynamics of a charged particle in a strong electromagnetic field when influenced by radiation reaction. Until recently, there has been no clear experimental verification. However, aligned crystals have remedied the situation: here, as in Nielsen et al CERN NA63 Collaboration (2020 Phys. Rev. D 102 052004), we report on a quantitative experimental test of the LL equation by measuring the emission spectra of electrons and positrons penetrating aligned single crystals. The recorded spectra are in remarkable agreement with simulations based on the LL equation of motion with moderate quantum corrections for recoil and, in the case of electrons in axially aligned crystals, spin and reduced radiation intensity.

Original language	English
Article number	085001
Journal	New Journal of Physics
Volume	23
Issue	8
Number of pages	9
ISSN	1367-2630
DOIs	https://doi.org/10.1088/1367-2630/ac1554
Publication status	Published - Aug 2021

Keywords

classical electrodynamics
radiation reaction
strong fields

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10.1088/1367-2630/ac1554

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title = "Experimental verification of the Landau-Lifshitz equation",

abstract = "The Landau-Lifshitz (LL) equation has been proposed as the classical equation to describe the dynamics of a charged particle in a strong electromagnetic field when influenced by radiation reaction. Until recently, there has been no clear experimental verification. However, aligned crystals have remedied the situation: here, as in Nielsen et al CERN NA63 Collaboration (2020 Phys. Rev. D 102 052004), we report on a quantitative experimental test of the LL equation by measuring the emission spectra of electrons and positrons penetrating aligned single crystals. The recorded spectra are in remarkable agreement with simulations based on the LL equation of motion with moderate quantum corrections for recoil and, in the case of electrons in axially aligned crystals, spin and reduced radiation intensity.",

keywords = "classical electrodynamics, radiation reaction, strong fields",

author = "Nielsen, {C. F.} and Justesen, {J. B.} and Sorensen, {A. H.} and Uggerhoj, {U. I.} and R. Holtzapple",

note = "Publisher Copyright: {\textcopyright} 2021 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft.",

year = "2021",

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AU - Nielsen, C. F.

AU - Justesen, J. B.

AU - Sorensen, A. H.

AU - Uggerhoj, U. I.

AU - Holtzapple, R.

PY - 2021/8

Y1 - 2021/8

N2 - The Landau-Lifshitz (LL) equation has been proposed as the classical equation to describe the dynamics of a charged particle in a strong electromagnetic field when influenced by radiation reaction. Until recently, there has been no clear experimental verification. However, aligned crystals have remedied the situation: here, as in Nielsen et al CERN NA63 Collaboration (2020 Phys. Rev. D 102 052004), we report on a quantitative experimental test of the LL equation by measuring the emission spectra of electrons and positrons penetrating aligned single crystals. The recorded spectra are in remarkable agreement with simulations based on the LL equation of motion with moderate quantum corrections for recoil and, in the case of electrons in axially aligned crystals, spin and reduced radiation intensity.

AB - The Landau-Lifshitz (LL) equation has been proposed as the classical equation to describe the dynamics of a charged particle in a strong electromagnetic field when influenced by radiation reaction. Until recently, there has been no clear experimental verification. However, aligned crystals have remedied the situation: here, as in Nielsen et al CERN NA63 Collaboration (2020 Phys. Rev. D 102 052004), we report on a quantitative experimental test of the LL equation by measuring the emission spectra of electrons and positrons penetrating aligned single crystals. The recorded spectra are in remarkable agreement with simulations based on the LL equation of motion with moderate quantum corrections for recoil and, in the case of electrons in axially aligned crystals, spin and reduced radiation intensity.

KW - classical electrodynamics

KW - radiation reaction

KW - strong fields

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DO - 10.1088/1367-2630/ac1554

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VL - 23

JO - New Journal of Physics

JF - New Journal of Physics

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Experimental verification of the Landau-Lifshitz equation

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