Dissociation of multicharged CO molecular ions produced in collisions with 97-MeV<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">Ar</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mn>4</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>: Total-kinetic-energy distributions

Sampoll, G.; Watson, R. L.; Heber, O.; Horvat, V.; Wohrer, K.; Chabot, M.

doi:10.1103/physreva.45.2903

Cited by 62 publications

(26 citation statements)

References 24 publications

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“…InFig. 2we compare our results for 1 MeV/amu F 4+ impact with the 2.4 MeV/amu Ar 14+ impact data of Sampoll et al2 and with photodissociation at 110 eV reported by Lablanquie et a/3. (All the distributions are normalized such that their area is 1.)…”

supporting

confidence: 54%

Fragmentation of CO caused by fast F4+ impact

Ben‐Itzhak¹,

Ginther²,

Carnes³

1993

AIP Conference Proceedings

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Application of the dressed-bound-state molecular strong-field approximation to above-threshold ionization of heteronuclear molecules: NO vs. CO J. Chem. Phys. 137, 134307 (2012) Nanoparticle collisions in the gas phase in the presence of singular contact potentials J. Chem. Phys. 137, 064316 (2012) Merged-beams for slow molecular collision experiments J. Chem. Phys. 137, 054202 (2012) Mass-analyzed threshold ionization of an excited state of lanthanum dioxide J. Chem. Phys. 137, 034307 (2012) Non-adiabatic transitions from I2(E0g+ and D0u+) states induced by collisions with M = I2(X0g+) and H2O ABSTRACTThe fragmentation of CO caused by 1 MeV/amu F 4+ impact has been studied using the coincidence time-of-flight technique. The kinetic energy distribution for C + § O + was determined using an extension of a method suggested by Sch~er ei al 1 . This distribution is compared to the Ar la+ impact data of Sampoll ei al. 2 and to photoionization measurements done by Lablanquie e~ a/3. The kinetic energy distribution shifts toward higher energy for 2.4 MeV/amu Ar 14+ impact, indicating that higher excited states of the intermediate C02+ molecular ion are populated in this collision in comparison with the F a+ impact and photodissociation.

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supporting

confidence: 54%

Fragmentation of CO caused by fast F4+ impact

Ben‐Itzhak¹,

Ginther²,

Carnes³

1993

AIP Conference Proceedings

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“…Recentl. y, Sampoll et al [11]reported on the dissociation of multicharged carbon monoxide ions produced by 2.425-MeV/amu Ar [14] impact. The kinetic-energy distribution of the outgoing ion pairs has been evaluated from the coincidence time-offlight (TOF) spectra.…”

Section: Introductionmentioning

confidence: 99%

Multiple-electron removal and molecular fragmentation of CO by fastF4+impact

1993

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Multiple-electron removal from and molecular fragmentation of carbon monoxide molecules caused by collisions with 1-MeV/amu F + ions were studied using the coincidence time-of-Aight technique. In these collisions, multiple-electron removal of the target molecule is a dominant process. Cross sections for the different levels of ionization of the CO molecule during the collision were determined. The relative cross sections of ionization decrease with increasing number of electrons removed in a similar way as seen in atomic targets. This behavior is in agreement with a two-step mechanism, where erst the molecule is ionized by a Franck-Condon ionization and then the molecular ion dissociates. Most of the highly charged intermediate states of the molecule dissociate rapidly. Only CO+ and CO + molecular ions have been seen to survive long enough to be detected as molecular ions. The relative cross sections for the different breakup channels were evaluated for collisions in which the molecule broke into two charged fragments as mell as for collisions where only a single charged molecular ion or fragment were produced. The average charge state of each fragment resulting from CO~+~C'++0'+ breakup increases with the number of electrons removed from the molecule approximately following the relationship i = j=g/2 as long as K-shell electrons are not removed. This does not mean that the charge-state distribution is exactly symmetric, as, in general, removing electrons from the carbon fragment is slightly more likely than removing electrons from the oxygen due to the difference in binding energy. The cross sections for molecular breakup into a charged fragment and a neutral fragment drop rapidly with an increasing number of electrons removed.PACS number(s): 34.50.s, 35.80.+ s, 34.90.+ q

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“…Hence the study of fragmentation dynamics of a CO molecule induced by the energetic particles sheds light on the chemical and the physical processes occurring in the interstellar space. The partial ionization cross sections (PICSs) ( [14][15][16][17] and references therein) and the fragmentation dynamics of the CO molecule have been studied by many workers in the past [18][19][20][21][22][23][24][25][26][27]. Most of the studies were devoted to the electronic states of singly charged molecular ion and/or of the fragmentation channel C + + O + arising either from the dissociation of a CO 2+ ion or from the autoionization of a highly excited CO + ion with the impact of low-energy electrons and photons [3,4,[18][19][20].…”

Section: Introductionmentioning

confidence: 99%

“…Most of the studies were devoted to the electronic states of singly charged molecular ion and/or of the fragmentation channel C + + O + arising either from the dissociation of a CO 2+ ion or from the autoionization of a highly excited CO + ion with the impact of low-energy electrons and photons [3,4,[18][19][20]. Few studies have been devoted to examining the multiply charged molecular ions of CO using different experimental techniques by the impact of ions and the intense laser fields [5,[21][22][23][24][25][26]. However, the study of fragmentation of a multiply charged CO molecule produced from the impact of energetic electrons is scarce.…”

Section: Introductionmentioning

confidence: 99%

Ionic fragmentation of the CO molecule by impact of 10-keV electrons: Kinetic-energy-release distributions

et al. 2013

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The ionic fragmentation of a multiply charged CO molecule is studied under impact of 10-keV electrons using recoil-ion momentum spectroscopy. The kinetic-energy-release distributions for the various fragmentation channels arising from the dissociation of CO q+ (q = 2-4) are measured and discussed in light of theoretical calculations available in the literature. It is observed that the present kinetic-energy-release values are much smaller than those predicted by the Coulomb explosion model. The kinetic-energy-release distribution for the C + + O + channel is suggested to arise from the tunneling process. It is seen that the peak of kinetic-energy-release distribution is larger for that dissociation channel that arises from the same molecular ion which has higher charge on the oxygen atom. Further, the relative ionic fractions for seven ion species originating from ionization and subsequent dissociation of the CO molecule are obtained and compared with the existing data reported at low energy of the electron impact. The precursor-specific relative partial ionization cross sections are also obtained and shown to be about 66.4% from single ionization, 29.9% from double ionization, 3.3% from triple ionization, and about 0.4% from quadruple ionization of the precursor CO molecule contributing to the total fragment ion yield.

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Dissociation of multicharged CO molecular ions produced in collisions with 97-MeVAr14+: Total-kinetic-energy distributions

Cited by 62 publications

References 24 publications

Fragmentation of CO caused by fast F4+ impact

Fragmentation of CO caused by fast F4+ impact

Multiple-electron removal and molecular fragmentation of CO by fastF4+impact

Ionic fragmentation of the CO molecule by impact of 10-keV electrons: Kinetic-energy-release distributions

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