Imaging the onset of the resonance regime in low-energy NO-He collisions

doi:10.1126/science.aba3990

GSTDTAP > 气候变化

DOI	10.1126/science.aba3990
	Imaging the onset of the resonance regime in low-energy NO-He collisions
	Tim de Jongh; Matthieu Besemer; Quan Shuai; Tijs Karman; Ad van der Avoird; Gerrit C. Groenenboom; Sebastiaan Y. T. van de Meerakker
	2020-05-08
发表期刊	Science
出版年	2020
英文摘要	Ultracold collision dynamics are of great importance in understanding the quantum nature of chemical interactions, but achieving the ultracold regime for molecules is challenging. Traditional techniques based on alternative routes to assemble the ultracold atomic constituents are only able to produce a type of ultracold molecules that cannot probe state-selective dynamics. Using Stark deceleration and velocity map–imaging techniques, de Jongh et al. achieved the ultracold regime directly for a nitric oxide–helium system and measured the state-to-state cross sections for inelastic scattering with high precision (see the Perspective by Yang and Yang). The observed scattering resonances confirmed high sensitivity to the underlying interaction potential because only the most accurate electronic structure theory could reproduce their structure. Science , this issue p. [626][1]; see also p. [582][2] At low energies, the quantum wave–like nature of molecular interactions results in distinctive scattering behavior, ranging from the universal Wigner laws near 0 kelvin to the occurrence of scattering resonances at higher energies. It has proven challenging to experimentally probe the individual waves underlying these phenomena. We report measurements of state-to-state integral and differential cross sections for inelastic NO-He collisions in the 0.2 to 8.5 centimeter–1 range with 0.02 centimeter–1 resolution. We studied the onset of the resonance regime by probing the lowest-lying resonance dominated by s and p waves only. The highly structured differential cross sections directly reflect the increasing number of contributing waves as the energy is increased. Only with CCSDT(Q) level of theory was it possible to reproduce our measurements. [1]: /lookup/doi/10.1126/science.aba3990 [2]: /lookup/doi/10.1126/science.abb8020
领域	气候变化 ; 资源环境
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/249809
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Tim de Jongh,Matthieu Besemer,Quan Shuai,et al. Imaging the onset of the resonance regime in low-energy NO-He collisions[J]. Science,2020.
APA	Tim de Jongh.,Matthieu Besemer.,Quan Shuai.,Tijs Karman.,Ad van der Avoird.,...&Sebastiaan Y. T. van de Meerakker.(2020).Imaging the onset of the resonance regime in low-energy NO-He collisions.Science.
MLA	Tim de Jongh,et al."Imaging the onset of the resonance regime in low-energy NO-He collisions".Science (2020).