Strong-Field Tunneling Ionization Rate Based on Landau–Dykhne Transition Theory

2021 ◽  
Vol 133 (1) ◽  
pp. 1-6
Author(s):  
V. M. Petrović ◽  
H. S. Delibaśić ◽  
I. D. Petrović
Keyword(s):  
Strong Field ◽  
Ionization Rate ◽  
Transition Theory ◽  
Tunneling Ionization

Tunneling Ionization Study of Linear Molecules in Strong-Field Laser Pulses

2020 ◽  
Vol 65 (1-2) ◽  
pp. 57-68
Author(s):  
V. Petrović ◽  
◽  
H. Delibašić ◽  
I. Petrović ◽  
◽  
...  
Keyword(s):  
Ionization Potential ◽  
Strong Field ◽  
Laser Pulses ◽  
Ionization Rate ◽  
Rate Equations ◽  
Tunneling Ionization ◽  
Low Intensity ◽  
Linear Molecules ◽  
Experimental Findings ◽  
Ionization Rates

"We theoretically studied photoionization of atoms and molecules in the frame of Perelomov-Popov-Terent’ev (PPT) and Ammosov-Delone-Krainov (ADK) theories. Strong-field single ionization of two diatomic molecules, N_2 and O_2, are studied and compared to Ar and Xe atoms, using an 800 nm Ti:sapphire laser in the 3×〖10〗^13 to 1×〖10〗^15 Wcm^(-2) intensity range. To eliminate disagreement between theoretical and experimental findings in a low intensity fields (~6×〖10〗^13 Wcm^(-2)), we considered the influence of shifted ionization potential. Including these effects in the ionization rates, we numerically solved rate equations in order to determine an expression for the ionization yields. The use of modified ionization potential showed that the ionization yields will actually decrease below values predicted by original (uncorrected) formulas. This paper will discuss the causes of this discrepancy. Keywords: tunneling ionization, ionization rate, ionization yield, molecules. "

scholarly journals Accurate measurement of laser intensity using photoelectron interference in strong-field tunneling ionization

2018 ◽  
Vol 26 (16) ◽  
pp. 20063 ◽  
Author(s):  
Jia Tan ◽  
Yueming Zhou ◽  
Min Li ◽  
Mingrui He ◽  
Yali Liu ◽  
...  
Keyword(s):  
Laser Intensity ◽  
Strong Field ◽  
Tunneling Ionization

Angular momentum distribution in strong-field frustrated tunneling ionization

2018 ◽  
Vol 16 (4) ◽  
pp. 040202 ◽  
Author(s):  
Jintai Liang Jintai Liang ◽  
Ruozhou Zhang Ruozhou Zhang ◽  
Xiaomeng Ma Xiaomeng Ma ◽  
Yueming Zhou Yueming Zhou ◽  
Peixiang Lu Peixiang Lu
Keyword(s):  
Angular Momentum ◽  
Momentum Distribution ◽  
Strong Field ◽  
Tunneling Ionization

A theoretical study of vibrational effects on strong field ionization of CS2

2018 ◽  
Vol 17 (08) ◽  
pp. 1850052
Author(s):  
Meixia Zhang ◽  
Guangwen Xu ◽  
Guoying Lu ◽  
Peng Song
Keyword(s):  
Theoretical Study ◽  
Strong Field ◽  
Orientation Angle ◽  
Field Ionization ◽  
Vibrationally Excited ◽  
Tunneling Ionization ◽  
Strong Field Ionization ◽  
Vibration Effect ◽  
Primary Contribution ◽  
Ionization Rates

Tunneling ionization of vibrationally excited CS2 molecules in their ground electronic state is calculated using molecular orbital Ammosov–Delone–Krainov theory (MO-ADK) considering bond length-dependence and bond angle-dependence. The tunneling ionization rates and the corresponding electron density are calculated respectively for different initial states. A relationship between laser intensity and the molecular orientation angle is determined and compared with experimental results, showing excellent agreement. Our calculations show that the primary contribution of vibration effect to CS2 in tunneling ionization is due to the symmetric expansion mode.

Analysis of angular dependence of strong-field tunneling ionization forCO2

2009 ◽  
Vol 80 (5) ◽  
Author(s):  
Song-Feng Zhao ◽  
Cheng Jin ◽  
Anh-Thu Le ◽  
T. F. Jiang ◽  
C. D. Lin
Keyword(s):  
Angular Dependence ◽  
Strong Field ◽  
Tunneling Ionization

Generation and evolution of electrons in strong-field atomic processes

2014 ◽  
Vol 28 (14) ◽  
pp. 1450110
Author(s):  
Xiaofang Shu ◽  
Shibing Liu ◽  
Haiying Song
Keyword(s):  
Strong Field ◽  
Laser Energy ◽  
Ionization Rate ◽  
Field Approximation ◽  
Static Field ◽  
Intense Laser ◽  
Atomic Processes ◽  
Free Electrons ◽  
Pulse Envelope ◽  
Atom Interaction

The generation and their velocity distribution of free electrons generated in field ionization process is presented by using the single electron tracking method in the interaction of an intense laser pulse with noble atoms. Based on the quasi-static field approximation, the density of field-ionized free electrons in the pulse envelope is obtained by solving the Ammosov–Delone–Krainov ionization rate equation. The simulation result shows that the laser-generated plasma can rapidly consume the laser energy at falling edge of pulse and change the pulse shape in the laser-atom interaction.

scholarly journals Exploring tunneling time by instantaneous ionization rate in strong-field ionization

2017 ◽  
Vol 25 (19) ◽  
pp. 23493 ◽  
Author(s):  
Minghu Yuan ◽  
PeiPei Xin ◽  
TianShu Chu ◽  
HongPing Liu
Keyword(s):  
Strong Field ◽  
Ionization Rate ◽  
Field Ionization ◽  
Tunneling Time ◽  
Strong Field Ionization
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