“Anomalous” Photoelectric Effect in the Ultrafast Electron Diffraction Method
Electron-pulse probing of fast laser-induced processes has allowed the direct observation of the structural dynamics in matter with a high spatiotemporal resolution. A thin gold film has appeared to be a convenient photocathode, and photoelectron emission has been induced by femtosecond ultraviolet...
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| Veröffentlicht in: | JETP letters 2024-04, Vol.119 (7), p.495-500 |
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| creator | Aseyev, S. A. Mironov, B. N. Poydashev, D. G. Ischenko, A. A. Ryabov, E. A. |
| description | Electron-pulse probing of fast laser-induced processes has allowed the direct observation of the structural dynamics in matter with a high spatiotemporal resolution. A thin gold film has appeared to be a convenient photocathode, and photoelectron emission has been induced by femtosecond ultraviolet radiation with a photon energy of about 4.65–4.75 eV (in particular,
ω
4.65 eV for the third harmonic of the Ti:sapphire laser). For the linear photoelectric effect, this energy contradicts the reference work function
W
Au
5.1–5.3 eV of pure metal. Reasons for such contradiction have been analyzed and good agreement with experimental data has been reached with a model proposed for the generation of photoelectron pulses. |
| doi_str_mv | 10.1134/S0021364024600745 |
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ω
4.65 eV for the third harmonic of the Ti:sapphire laser). For the linear photoelectric effect, this energy contradicts the reference work function
W
Au
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ω
4.65 eV for the third harmonic of the Ti:sapphire laser). For the linear photoelectric effect, this energy contradicts the reference work function
W
Au
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ω
4.65 eV for the third harmonic of the Ti:sapphire laser). For the linear photoelectric effect, this energy contradicts the reference work function
W
Au
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| subjects | Atomic Biological and Medical Physics Biophysics Electron diffraction Molecular Optical and Plasma Physics Optics and Laser Physics Particle and Nuclear Physics Photocathodes Photoelectric effect Photoelectricity Photoelectrons Physics Physics and Astronomy Quantum Information Technology Sapphire Solid State Physics Spintronics Ultraviolet radiation Work functions |
| title | “Anomalous” Photoelectric Effect in the Ultrafast Electron Diffraction Method |
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