Radiation controlled energy of photoelectrons produced by two-color short pulses.

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Abstract

We report on numerical results of energy spectra of photoelectrons emitted by irradiating a hydrogen atom with the superposition of two pulses. The spectra have been obtained by numerical integration of the time dependent Schr¨odinger equation. The highest frequency component of the pulse has been assumed to have low intensity and such a frequency that a single photon may ionize the atom. Its duration has been assumed to lie in the range of subfemtoseconds. The lowest frequency component that redistribute the energy of the ionized electrons has an higher intensity and duration of few femtoseconds. We find that when the field are aligned, the electron energy spectra strongly depend on the time lag of the fields, on the carrier-envelope relative phase of the lowest frequency pulse, and on the duration of the X-ray pulse. Moreover it has been found that by changing the angle between the direction of the low and high frequency fields significant modifications to the spectra occur that could be used to measure the relative orientation of the fields.
Lingua originaleEnglish
pagine (da-a)23-31
Numero di pagine9
RivistaTHE EUROPEAN PHYSICAL JOURNAL. SPECIAL TOPICS
Volume160
Stato di pubblicazionePublished - 2008

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Photoelectrons
photoelectrons
Color
color
Radiation
Atoms
Electrons
radiation
pulses
Hydrogen
energy spectra
Photons
X rays
energy
numerical integration
hydrogen atoms
envelopes
time lag
electron energy
low frequencies

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Physics and Astronomy(all)

Cita questo

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title = "Radiation controlled energy of photoelectrons produced by two-color short pulses.",
abstract = "We report on numerical results of energy spectra of photoelectrons emitted by irradiating a hydrogen atom with the superposition of two pulses. The spectra have been obtained by numerical integration of the time dependent Schr¨odinger equation. The highest frequency component of the pulse has been assumed to have low intensity and such a frequency that a single photon may ionize the atom. Its duration has been assumed to lie in the range of subfemtoseconds. The lowest frequency component that redistribute the energy of the ionized electrons has an higher intensity and duration of few femtoseconds. We find that when the field are aligned, the electron energy spectra strongly depend on the time lag of the fields, on the carrier-envelope relative phase of the lowest frequency pulse, and on the duration of the X-ray pulse. Moreover it has been found that by changing the angle between the direction of the low and high frequency fields significant modifications to the spectra occur that could be used to measure the relative orientation of the fields.",
author = "Claudio Leone and Saverio Bivona and Riccardo Burlon and Giovanni Bonanno",
year = "2008",
language = "English",
volume = "160",
pages = "23--31",
journal = "European Physical Journal: Special Topics",
issn = "1951-6355",
publisher = "Springer Verlag",

}

TY - JOUR

T1 - Radiation controlled energy of photoelectrons produced by two-color short pulses.

AU - Leone, Claudio

AU - Bivona, Saverio

AU - Burlon, Riccardo

AU - Bonanno, Giovanni

PY - 2008

Y1 - 2008

N2 - We report on numerical results of energy spectra of photoelectrons emitted by irradiating a hydrogen atom with the superposition of two pulses. The spectra have been obtained by numerical integration of the time dependent Schr¨odinger equation. The highest frequency component of the pulse has been assumed to have low intensity and such a frequency that a single photon may ionize the atom. Its duration has been assumed to lie in the range of subfemtoseconds. The lowest frequency component that redistribute the energy of the ionized electrons has an higher intensity and duration of few femtoseconds. We find that when the field are aligned, the electron energy spectra strongly depend on the time lag of the fields, on the carrier-envelope relative phase of the lowest frequency pulse, and on the duration of the X-ray pulse. Moreover it has been found that by changing the angle between the direction of the low and high frequency fields significant modifications to the spectra occur that could be used to measure the relative orientation of the fields.

AB - We report on numerical results of energy spectra of photoelectrons emitted by irradiating a hydrogen atom with the superposition of two pulses. The spectra have been obtained by numerical integration of the time dependent Schr¨odinger equation. The highest frequency component of the pulse has been assumed to have low intensity and such a frequency that a single photon may ionize the atom. Its duration has been assumed to lie in the range of subfemtoseconds. The lowest frequency component that redistribute the energy of the ionized electrons has an higher intensity and duration of few femtoseconds. We find that when the field are aligned, the electron energy spectra strongly depend on the time lag of the fields, on the carrier-envelope relative phase of the lowest frequency pulse, and on the duration of the X-ray pulse. Moreover it has been found that by changing the angle between the direction of the low and high frequency fields significant modifications to the spectra occur that could be used to measure the relative orientation of the fields.

UR - http://hdl.handle.net/10447/14962

M3 - Article

VL - 160

SP - 23

EP - 31

JO - European Physical Journal: Special Topics

JF - European Physical Journal: Special Topics

SN - 1951-6355

ER -