Journal
PHYSICAL REVIEW A
Volume 91, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.91.022704
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Funding
- Marie Curie Initial Training Network ICONIC [238671]
- EPSRC Programme Grant [EP/G00224X/1]
- ERC Starting Independent Research Grant ImageMS
- EPSRC [EP/L005913/1, EP/G00224X/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/L005913/1, EP/G00224X/1] Funding Source: researchfish
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This paper reports a crossed-beam velocity-map imaging study into the electron ionization dynamics of jet-cooled N-2 and O-2 molecules at electron collision energies from 35 to 100 eV. The use of velocity-map imaging detection provides insight into the detailed ionization dynamics through the dimension of the product ion kinetic energy associated with impulsive dissociation. In particular, mesoscopic cross sections corresponding to ionization from manifolds of energetically close states converging to the same dissociation asymptote are reported for a number of single-ionization channels. In addition, a range of double-ionization cross sections have been characterized, including those yielding X-2(2+) dications. These are found to be in excellent agreement with other cross sections determined in coincidence measurements. This agreement supports a meaningful and accurate determination of the single-ionization channels.
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