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Note on Resonant and Non-resonant Peaks in Electron-Atom Total Scattering Cross Sections
KTH, School of Engineering Sciences (SCI), Mechanics.ORCID iD: 0000-0003-0149-341X
2018 (English)In: Communications in Theoretical Physics, ISSN 0253-6102, E-ISSN 1572-9494, Vol. 69, no 1, p. 28-30Article in journal (Refereed) Published
Abstract [en]

Certain broad low-energy peaks caused by a single partial wave in total cross sections are explained in terms of phase shifts. Such peaks have been associated with the real part of a Regge pole trajectory, having a maximum near an integer value of the angular momentum quantum number. At the peak energies, the pertinent partial-wave phase shift was shown to have a local maximum near a value pi/2 modulo pi. This implies no time delay in the semiclassical context. The phenomenon is a quantum effect, lacking a semiclassical interpretation.

Place, publisher, year, edition, pages
IOP PUBLISHING LTD , 2018. Vol. 69, no 1, p. 28-30
Keywords [en]
scattering, resonances, quantum mechanics, cross sections
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-221947DOI: 10.1088/0253-6102/69/1/28ISI: 000422832600006Scopus ID: 2-s2.0-85040690052OAI: oai:DiVA.org:kth-221947DiVA, id: diva2:1178681
Note

QC 20180130

Available from: 2018-01-30 Created: 2018-01-30 Last updated: 2018-02-02Bibliographically approved

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Thylwe, Karl-Erik

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