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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2310.00189 |
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| _version_ | 1866914131327582208 |
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| author | Vigneau, Jean-Nicolas Dang, Thanh-Tung Nguyen Charron, Eric |
| author_facet | Vigneau, Jean-Nicolas Dang, Thanh-Tung Nguyen Charron, Eric |
| contents | We present an efficient method for modeling the single and double ionization dynamics of the H$_2$ molecule in ultrashort intense laser fields. This method is based on a semi-analytical approach to calculate the time-dependent single and double molecular ionization rates and on a numerical approach to describe the vibrational motion that takes place in the intermediate molecular ion H$_2^+$. This model allows for the prediction of the single and double ionization probabilities of the H$_2$ molecule to be made over a wide range of frequencies and laser intensities with limited computational time, while providing a realistic estimate of the energy of the products of the dissociative ionization and of the Coulomb explosion of the H$_2$ molecule. The effect of vibrational dynamics on ionization yields and proton kinetic energy release spectra is demonstrated and, in the case of the latter, discussed in terms of basic strong-field molecular fragmentation mechanisms. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2310_00189 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Electro-nuclear dynamics of single and double ionization of H$_2$ in ultrafast intense laser pulses Vigneau, Jean-Nicolas Dang, Thanh-Tung Nguyen Charron, Eric Quantum Physics We present an efficient method for modeling the single and double ionization dynamics of the H$_2$ molecule in ultrashort intense laser fields. This method is based on a semi-analytical approach to calculate the time-dependent single and double molecular ionization rates and on a numerical approach to describe the vibrational motion that takes place in the intermediate molecular ion H$_2^+$. This model allows for the prediction of the single and double ionization probabilities of the H$_2$ molecule to be made over a wide range of frequencies and laser intensities with limited computational time, while providing a realistic estimate of the energy of the products of the dissociative ionization and of the Coulomb explosion of the H$_2$ molecule. The effect of vibrational dynamics on ionization yields and proton kinetic energy release spectra is demonstrated and, in the case of the latter, discussed in terms of basic strong-field molecular fragmentation mechanisms. |
| title | Electro-nuclear dynamics of single and double ionization of H$_2$ in ultrafast intense laser pulses |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2310.00189 |