Isotope effect for associative detachment: H(D)− + H(D) → H2(D2) + e−

Article

Isotope effect for associative detachment: H(D)− + H(D) → H2(D2) + e−

Miller, K. A.; Bruhns, H.; Čížek, M.; Eliášek, J.; Cabrera-Trujillo, R.; Kreckel, H.; O’Connor, A. P.; Urbain X.; Savin, D. W.

Phys. Rev. A 86, 032714 (2012)

doi ↗

Abstract

We report experimental and theoretical results for associative detachment (AD) of D− + D → D2 + e
−.
We compare these data to our previously published results for H− + H → H2 + e
−. The measurements show no
significant isotope effect in the total cross section. This is to be contrasted with previously published experimental
and theoreticalwork which has found a significant isotope effect in diatomic systems for partialADcross sections,
i.e., as a function of the rotational and vibrational levels of the final molecule formed. Our work implies that
though the rovibrational distribution of flux is different for AD of H− + H andD− + D, the total flux for these
two systems is essentially the same when summed over all possible final channels.

Institute authors

Čížek, Martin

Supported by

GACR 208/10/1281 — Vibrational and dissociation dynamics of molecular systems in electronic continuum

BibTeX

@article{UTF462,
  author        = {Miller, K. A. and Bruhns, H. and Čížek, M. and Eliášek, J. and Cabrera-Trujillo, R. and Kreckel, H. and O’Connor, A. P. and Urbain X. and Savin, D. W.},
  title         = {{Isotope effect for associative detachment: H(D)− + H(D) → H2(D2) + e−}},
  journal       = {Phys. Rev. A},
  volume        = {86},
  pages         = {032714},
  year          = {2012},
  doi           = {10.1103/PhysRevA.86.032714},
}