Dissociative Recombination of Cold HeH+ Ions
[1];
[3]
- J. Heyrovsky Institute of Physical Chemistry, Prague (Czech Republic)
- J. Heyrovsky Institute of Physical Chemistry, Prague (Czech Republic); Charles Univ., Prague (Czech Republic). Faculty of Mathematics and Physics
- Purdue Univ., West Lafayette, IN (United States). Dept of Physics and Astronomy; Purdue Univ., West Lafayette, IN (United States). Purdue Quantum Science and Engineering Institute
The HeH+ cation is the simplest molecular prototype of the indirect dissociative recombination (DR) process that proceeds through electron capture into Rydberg states of the corresponding neutral molecule. This Letter develops the first application of our recently developed energy-dependent frame transformation theory to the indirect DR processes. The theoretical model is based on the multichannel quantum-defect theory with the vibrational basis states computed using exterior complex scaling of the nuclear Hamiltonian. The ab initio electronic R-matrix theory is adopted to compute quantum defects as functions of the collision energy and of the internuclear distance. The resulting DR rates are convolved over the beam energy distributions relevant to a recent experiment at the Cryogenic Storage Ring, giving good agreement between the experiment and the theory.
- Research Organization:
- Purdue Univ., West Lafayette, IN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0010545
- OSTI ID:
- 1595319
- Journal Information:
- Physical Review Letters, Vol. 124, Issue 4; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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