Collision Energy Dependent Cross Section and Rotational Alignment of NO (A <sup>2</sup>Σ<sup>+</sup>) in the Energy-Transfer Reaction of N<sub>2</sub> (A<sup>3</sup>Σ<sub>u</sub><sup>+</sup>) + NO (X <sup>2</sup>Π) → N<sub>2</sub> (X <sup>1</sup>Σ<sub>g</sub><sup>+</sup>) + NO (A <sup>2</sup>Σ<sup>+</sup>)
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- H. Ohoyama
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
書誌事項
- 公開日
- 2014-10-02
- 資源種別
- journal article
- DOI
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- 10.1021/jp507696y
- 公開者
- American Chemical Society (ACS)
この論文をさがす
説明
We have studied the collision energy dependent cross section and alignment of NO (A (2)Σ(+)) rotation in the energy-transfer reaction of N2 (A (3)Σ(u)(+)) + NO (X (2)Π) → N2 (X (1)Σ(g)(+)) + NO (A (2)Σ(+)) at the collision energy (E) region of 0.03-0.2 eV. NO (A (2)Σ(+)) emission in two linear polarization directions in the collision frame (parallel (∥) and perpendicular (⊥) with respect to the relative velocity vector (vR)) has been measured as a function of collision energy. NO (A (2)Σ(+)) rotation (J-vector) turns out to be aligned perpendicular to vR. In addition, collision energy is found to enhance the degree of alignment of NO (A (2)Σ(+)) rotation. The collision energy dependent cross sections σ(∥,(⊥))(E) (excitation functions) show a rapid fall-off following an initial rise with a threshold less than 0.02 eV. The excitation function at the parallel alignment of NO (A (2)Σ(+)) rotation, σ(J∥v(R), (E), is slightly shifted to the low collision energy region as compared with σ(J ⊥ vR, E). We propose that the rapid fall-off feature in the excitation function is attributed to the multidimensional nonadiabatic transitions.
収録刊行物
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- The Journal of Physical Chemistry A
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The Journal of Physical Chemistry A 118 (41), 9646-9652, 2014-10-02
American Chemical Society (ACS)
