Zobrazeno 1 - 10
of 334
pro vyhledávání: '"Kheifets, A S"'
Autor:
Kheifets, Anatoli S.
Resonances leave prominent signatures in atomic and molecular ionization triggered by the absorption of single or multiple photons. These signatures reveal various aspects of the ionization process, characterizing both the initial and final states of
Externí odkaz:
http://arxiv.org/abs/2410.16696
Two-photon atomic ionization driven by time-locked XUV and IR pulses allows to study dynamics of Fano resonances in time and energy domains. Different time evolution of the two interfering pathways leading to a Fano resonance can be exploited to turn
Externí odkaz:
http://arxiv.org/abs/2405.14080
We study formation and evolution of the electron wave-packets in the process of strong field ionization of various atomic targets. Our study is based on reformulating the problem in terms of conditional amplitudes, i.e., the amplitudes describing out
Externí odkaz:
http://arxiv.org/abs/2310.10937
Autor:
Kheifets, Anatoli S., Xu, Zhongtao
The mutual angle formed by the non-collinear polarization axes of two laser pulses is used to control two-photon XUV+IR ionization of noble gas atoms in the process of reconstruction of attosecond bursts by beating of two-photon transitions (RABBITT)
Externí odkaz:
http://arxiv.org/abs/2304.13889
Determination and interpretation of Wigner-like photoionisation delays is one of the most active fields of attosecond science. Previous results have suggested that large photoionisation delays are associated with structured continua, but a quantitati
Externí odkaz:
http://arxiv.org/abs/2301.03697
Shape resonances in photoionization of atoms and molecules arise from a particular geometry of the ionic potential which traps the receding photoelectron in a quasi-bound state in a particular partial wave. This mechanism allows us to connect the pho
Externí odkaz:
http://arxiv.org/abs/2211.15892
We study orientation and two-center interference effects in attosecond time-resolved photoionization of the H$_2$ molecule. Time resolution of XUV ionization of H$_2$ is gained through the phase retrieval capability of attosecond angular streaking de
Externí odkaz:
http://arxiv.org/abs/2204.09161
Autor:
Kheifets, Anatoli S., Wielian, Rickson, Ivanov, Igor A., Wang, Anna Li, Marinelli, Agostino, Cryan, James P.
We demonstrate an accurate phase retrieval of XUV atomic ionization by streaking the photoelectron in a circularly polarized IR laser field. The streaking phase can then be converted to the atomic time delay containing the Wigner and continuum-contin
Externí odkaz:
http://arxiv.org/abs/2202.06147
Autor:
Nandi, T., Sharma, Prashant, Chatterjee, Soumya, Mitra, D., Mishra, Adya P, Azuma, Y., Koike, F., Kheifets, A. S.
Photon exchange due to nuclear bremsstrahlung during nuclear collisions can cause Coulomb excitation in the projectile and the target nuclei. The corresponding process originated in nuclear timescales can also be observed in atomic phenomenon experim
Externí odkaz:
http://arxiv.org/abs/2107.13150
We study propagation effects due to the finite speed of light in ionization of extended systems. We present a general quantitative theory of these effects and show under which conditions such effects should appear. The finite speed of light propagati
Externí odkaz:
http://arxiv.org/abs/2106.14382