Cold collisions of highly vibrationally excited and aligned D<sub>2</sub> with Ne

POSTER

Abstract

Resonant scattering of highly vibrationally excited and aligned D2 in cold collisions with Ne has recently been probed experimentally using the Stark-induced adiabatic Raman passage (SARP) technique [1]. A partial-wave analysis and numerical fitting of the experimental data for Δj=-2 transition in D2(v=4, j=2) + Ne collisions attributed the measured angular distribution to an l=2 shape resonance near E/kB=1 kelvin. Here, we report computation of a new potential energy surface for the Ne-H2 interaction suitable for the study of collisions between highly vibrationally excited H2/D2 with Ne as well as quantum scattering calculations of stereodynamics of D2(v=4, j=2) + Ne collisions probing Δj=-2 rotational transitions in D2. Our results show that collisions are dominated by a strong l=5 resonance near 3 K and a weaker l=6 resonance near 8 K. Our calculations do not support the claim that the measured angular distributions are dominated by a single l=2 partial-wave resonance near 1 K.

[1] W. E. Perreault, H. Zhou, N. Mukherjee, and R. N. Zare, Resonant cold scattering of highly vibrationally excited D2 with Ne, J. Chem. Phys. 157, 144301 (2022).

*This work is supported in part by NSF grant No. PHY-2409497 (B.N.) and DoD MURI grant No. W911NF-19-1-0283 (B.N.) from Army Research Office.

Presenters

  • Bikramaditya Mandal

    • University of Nevada, Las Vegas

Authors

  • Bikramaditya Mandal

    • University of Nevada, Las Vegas

  • Cristina Sanz-Sanz

    • Departamento de Quımica Fısica Aplicada, Modulo 14, Universidad Autonoma de Madrid, Madrid 28049, Spain

  • Pablo G Jambrina

    • Departamento de Quimica Fisica, University of Salamanca, Salamanca 37008, Spain

  • F. J Aoiz

    • Departamento de Quimica Fisica, Universidad Complutense, Madrid 28040, Spain

  • N. Balakrishnan

    • University of Nevada, Las Vegas
    • University of Nevada, Las Vegas, NV 89154