Exit point in the strong field ionization process

Ivanov, Igor; Nam, Chang Hee; Kim, Kyung Taec

doi:10.1038/srep39919

Cited by 26 publications

(19 citation statements)

References 33 publications

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“…Suppose ϕ(x, t) = R(x, t) exp [iS(x, t)],with R and S being real-valued functions, is the solution of the timedependent Schrödinger Equation (TDSE). In Bohmian Mechanics in one dimension, electron trajectories are computed from the following set of equations [11,18]:…”

Section: Theoretical Approachmentioning

confidence: 99%

“…The present study is devoted to a description of tunneling ionization employing Bohmian Mechanics [11][12][13], which has recently attracted much attention [14][15][16][17][18][19][20][21][22][23][24]. It will be shown that computing the streamlines of the wavefunction probability over time provides valuable insights and a natural route to understanding complex ultrafast mechanisms.…”

Section: Introductionmentioning

confidence: 99%

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Dynamics of tunneling ionization using Bohmian mechanics

Douguet

Bartschat

2018

Phys. Rev. A

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Recent attoclock experiments and theoretical studies regarding the strong-field ionization of atoms by few-cycle infrared pulses revealed new features that have attracted much attention. Here we investigate tunneling ionization and the dynamics of the electron probability using Bohmian Mechanics. We consider a one-dimensional problem to illustrate the underlying mechanisms of the ionization process. It is revealed that in the major part of the below-the-barrier ionization regime, in an intense and short infrared pulse, the electron does not tunnel "through" the entire barrier, but rather already starts from the classically forbidden region. Moreover, we highlight the correspondence between the probability of locating the electron at a particular initial position and its asymptotic momentum. Bohmian Mechanics also provides a natural definition of mean tunneling time and exit position, taking account of the time dependence of the barrier. Finally, we find that the electron can exit the barrier with significant kinetic energy, thereby corroborating the results of a recent study [Camus et al., Phys. Rev. Lett. 119 (2017) 023201].

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Section: Theoretical Approachmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dynamics of tunneling ionization using Bohmian mechanics

Douguet

Bartschat

2018

Phys. Rev. A

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“…This mechanism is characterized by many advantages, such as the lack of necessity to take into account the free energy carriers or pollutants (with lower ionization energy) during the initiation of the discharge. However, it should be mentioned that this type of ionization dominates in areas with very high electric field strengths, such as in the vicinity of blades or leader's head [16,34]. Because of the lack of theoretical description of this process for liquid environments, utility of the proposed model is significantly limited.…”

Section: Electric Field Dependent Molecular Ionizationmentioning

confidence: 99%

Electromagnetic and Thermal Phenomena Modeling of Electrical Discharges in Liquids

et al. 2020

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Electrical discharges in liquids have received lots of attention with respect to their potential applications in various techniques and technical processes. Exemplary, they are useful for water treatment, chemical and thermal processes acceleration, or nanoparticles production. In this paper the special utility of discharges for cold pasteurization of fruit juices is presented. Development of devices for its implementation is a significant engineering problem and should be performed using modeling and simulation techniques to determine the real parameters of discharges. Unfortunately, there is a lack of clear and uniform description of breakdown phenomena in liquids. To overcome this limitation, new methods and algorithms for streamers propagation and breakdown phase analysis are presented in the paper. All solutions were tested in “active area” in the form of liquid material model, placed between two flat electrodes. Electromagnetic and thermal-coupled field analysis were performed to determine all the factors that affect the discharge propagation. Additionally, some circuit models were used to include the power source cooperation with discharge region. In general, presented solutions can be defined as universal and one can use them for numerical simulation of other types of discharges.

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“…This interpretation gives a radically different perspective on tunneling through a quantum barrier, offering a transparent solution [82], as the potential barrier is suppressed by an additional`quantum' potential [81]. The solution of the tunneling time problem in this picture (see also Ref.…”

Section: Keldysh Parameter Adiabaticity Of Photoionization and Tunnmentioning

confidence: 99%

Keldysh photoionization theory: through the barriers

Желтиков¹

2017

Phys.-Usp.

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Exit point in the strong field ionization process

Cited by 26 publications

References 33 publications

Dynamics of tunneling ionization using Bohmian mechanics

Dynamics of tunneling ionization using Bohmian mechanics

Electromagnetic and Thermal Phenomena Modeling of Electrical Discharges in Liquids

Keldysh photoionization theory: through the barriers

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