Theoretical analysis of hard x-ray generation by nonperturbative interaction of ultrashort light pulses with a metal | Zendy

Jannick Weißhaupt | Zendy; Vincent Juvé | Zendy; Marcel Holtz | Zendy; M. Woerner | Zendy; Thomas Elsaesser | Zendy

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Theoretical analysis of hard x-ray generation by nonperturbative interaction of ultrashort light pulses with a metal

Author(s) -

Jannick Weißhaupt,

Vincent Juvé,

Marcel Holtz,

M. Woerner,

Thomas Elsaesser

Publication year - 2015

Publication title -

structural dynamics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.415

H-Index - 29

ISSN - 2329-7778

DOI - 10.1063/1.4915485

Subject(s) - femtosecond , bremsstrahlung , physics , laser , plasma , atomic physics , electron , flux (metallurgy) , wavelength , highly charged ion , optics , x ray , ultrashort pulse , amplitude , generation x , photon , materials science , nuclear physics , ion source , metallurgy , demographic economics , baby boomers , economics

The interaction of intense femtosecond pulses with metals allows for generating ultrashort hard x-rays. In contrast to plasma theories, tunneling from the target into vacuum is introduced as electron generation step, followed by vacuum acceleration in the laser field and re-entrance into the target to generate characteristic x-rays and Bremsstrahlung. For negligible space charge in vacuum, the Kα flux is proportional to the incident intensity and the wavelength squared, suggesting a strong enhancement of the x-ray flux by mid-infrared driving pulses. This prediction is in quantitative agreement with experiments on femtosecond Cu Kα generation

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