Polarization Transfer Rates by Isotropic Collisions between Astrophysical SiO Molecule and Electrons
Abstract
:1. Introduction
2. Definitions and Numerical Calculations
- –
- E being the collision energy;
- –
- is the SiO spin;
- –
- N is the rotational momentum of the SiO;
- –
- ,
- –
- quantifies the angular momentum exchange between the molecular states at the time of the collision;
- –
- is the SiO lower electronic state and is the upper electronic state. In this work, = X and represents the , , and states, respectively.
3. Rotational Rates
4. Astrophysical Implications
5. Conclusions and Perspectives
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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1 | Derouich (2006) [7] found that collisions of the SiO in the X state with the hydrogen atom in its ground state arise with a transfer of polarization rate of ∼ 10 cm s for j ≤ 8 and for the vibrational level v = 0. |
k | ||||||
---|---|---|---|---|---|---|
X | ||||||
→ | ||||||
0 | −1.5428 | 1.7377 | −4.1598 | −2.5952 | 1.0604 | |
1 | −1.1882 | 1.3382 | −3.2035 | −1.9986 | 0.8166 | |
2 | −0.9006 | 1.0144 | −2.4282 | −1.5149 | 0.619 | |
X | ||||||
→ | ||||||
0 | 7.1625 | −1.202 | 6.5227 | −1.4116 | 1.0631 | |
1 | 5.5158 | −0.9257 | 5.0231 | −1.0871 | 0.8187 | |
2 | 4.1809 | −0.7017 | 3.8075 | −0.8240 | 0.62055 | |
X | ||||||
→ | ||||||
0 | 9.8049 | −1.7041 | 9.5997 | −2.1515 | 1.6715 | |
1 | 7.5508 | −1.3124 | 7.3928 | −1.6569 | 1.2873 | |
2 | 5.7234 | −0.9947 | 5.6036 | −1.2559 | 0.9757 | |
X | ||||||
→ | ||||||
0 | 2.8107 | −4.5924 | 2.416 | −5.0649 | 3.6956 | |
1 | 2.1646 | −3.5367 | 1.8606 | −3.9005 | 2.846 | |
2 | 1.6407 | −2.6807 | 1.4103 | −2.9565 | 2.1572 |
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Derouich, M.; Zaheer Ahmad, B.; Alruhaili, A.; Qutub, S. Polarization Transfer Rates by Isotropic Collisions between Astrophysical SiO Molecule and Electrons. Universe 2022, 8, 140. https://doi.org/10.3390/universe8030140
Derouich M, Zaheer Ahmad B, Alruhaili A, Qutub S. Polarization Transfer Rates by Isotropic Collisions between Astrophysical SiO Molecule and Electrons. Universe. 2022; 8(3):140. https://doi.org/10.3390/universe8030140
Chicago/Turabian StyleDerouich, Moncef, Badruddin Zaheer Ahmad, Aied Alruhaili, and Saleh Qutub. 2022. "Polarization Transfer Rates by Isotropic Collisions between Astrophysical SiO Molecule and Electrons" Universe 8, no. 3: 140. https://doi.org/10.3390/universe8030140