Recollision induced nuclear excitation of ${}^{229}$Th

Abstract

Previously we proposed a new approach of exciting the ${}^{229}$Th nucleus using laser-driven electron recollision [W. Wang et al., Phys. Rev. Lett. 127, 052501 (2021)]. The current article is aimed to elaborate the method by explaining further theoretical details and presenting extended new results. The method has also been improved by adopting the electronic excitation cross sections calculated recently by Tkalya [E. V. Tkalya, Phys. Rev. Lett. 124, 242501 (2020)]. The new cross sections are obtained from Dirac distorted-wave calculations instead of from Dirac plane-wave calculations as we used previously. The distorted-wave cross sections are shown to be 5 to 6 orders of magnitude higher than the plane-wave results. With the excitation cross sections updated, the probability of isomeric excitation of ${}^{229}$Th from electron recollision is calculated to be on the order of $10^{-12}$ per nucleus per (femtosecond) laser pulse. Dependency of the excitation probability on various laser parameters is calculated and discussed, including the laser intensity, the laser wavelength, and the laser pulse duration.

arXiv comment12 pages, 11 figures

References in corpus (24)

• Accurate retrieval of structural information from laser-induced photoelectron and high-harmonic spectra by few-cycle laser pulses
• A Single-Ion Nuclear Clock for Metrology at the 19th Decimal Place
• Enhanced effect of temporal variation of the fine structure constant in diatomic molecules
• Energy of the ${}^{229}$Th nuclear clock transition
• Experimental evidence for Wigner's tunneling time
• Proposal for a Nuclear Gamma-Ray Laser of Optical Range
• A proposed experimental method to determine $\alpha$-sensitivity of splitting between ground and 7.6 eV isomeric states in Th-229
• Excitation of the isomeric ^{229m}Th nuclear state via an electronic bridge process in ^{229}Th^+
• Nuclear clocks based on resonant excitation of gamma-transitions
• X-ray pumping of the Th-229 nuclear clock isomer
• Radiative lifetime and energy of the low-energy isomeric level in ${}^{229}$Th
• Reduced transition probabilities for the gamma decay of the 7.8 eV isomer in ${}^{229}$Th
• Sensitivity of ${}^{229}$Th nuclear clock transition to variation of the fine-structure constant
• Electronic bridge excitation in highly charged Th-229 ions
• Nuclear excitation of the ${}^{229}$Th isomer via defect states in doped crystals
• On an attempt to optically excite the nuclear isomer in Th-229
• Femtosecond pumping of nuclear isomeric states by the Coulomb collision of ions with quivering electrons
• Excitation of ${}^{229m}$Th at Inelastic Scattering of Low Energy Electrons
• ${}^{229m}$Th isomer from a nuclear model perspective
• An alternative approach to populate and study the ${}^{229}$Th nuclear clock isomer
• Analytical approach to Coulomb focusing in strong field ionization
• On the longitudinal momentum of the electron at the tunneling exit
• Transition from non-sequential to sequential double ionisation in many-electron systems
• Nuclear Isomer Excitation in 229Th Atom by Super-Intense Laser Field

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