High-Resolution Imaging of C + He Collisions using Zeeman Deceleration and Vacuum-Ultraviolet Detection.
Vikram PlompXu-Dong WangFrancois LiqueJacek KłosJolijn OnvleeSebastiaan Y T van de MeerakkerPublished in: The journal of physical chemistry letters (2021)
High-resolution measurements of angular scattering distributions provide a sensitive test for theoretical descriptions of collision processes. Crossed beam experiments employing a decelerator and velocity map imaging have proven successful to probe collision cross sections with extraordinary resolution. However, a prerequisite to exploit these possibilities is the availability of a near-threshold state-selective ionization scheme to detect the collision products, which for many species is either absent or inefficient. We present the first implementation of recoil-free vacuum ultraviolet (VUV) based detection in scattering experiments involving a decelerator and velocity map imaging. This allowed for high-resolution measurements of state-resolved angular scattering distributions for inelastic collisions between Zeeman-decelerated carbon C( 3 P 1 ) atoms and helium atoms. We fully resolved diffraction oscillations in the angular distributions, which showed excellent agreement with the distributions predicted by quantum scattering calculations. Our approach offers exciting prospects to investigate a large range of scattering processes with unprecedented precision.
Keyphrases
- high resolution
- monte carlo
- mass spectrometry
- healthcare
- molecular dynamics
- primary care
- high speed
- blood flow
- tandem mass spectrometry
- real time pcr
- loop mediated isothermal amplification
- label free
- quantum dots
- molecular dynamics simulations
- current status
- quality improvement
- density functional theory
- high density
- fluorescence imaging