2010
DOI: 10.1039/c004467a
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Negative ion formation in potassium–nitromethane collisions

Abstract: Ion-pair formation in gaseous nitromethane (CH 3 NO 2 ) induced by electron transfer has been studied by investigating the products of collisions between fast potassium atoms and nitromethane molecules using a crossed molecular-beam technique. The negative ions formed in such collisions were analysed using time-of-flight mass spectroscopy.

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Cited by 41 publications
(51 citation statements)
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“…TOF mass spectra calibration was carried out on the basis of the well-known anionic species formed after potassium collisions with the nitromethane molecule. 23,26 This allows for safe mass assignment, even when the width of the peaks is larger than 1 m/z.…”
Section: Methodsmentioning
confidence: 99%
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“…TOF mass spectra calibration was carried out on the basis of the well-known anionic species formed after potassium collisions with the nitromethane molecule. 23,26 This allows for safe mass assignment, even when the width of the peaks is larger than 1 m/z.…”
Section: Methodsmentioning
confidence: 99%
“…23,26 Briefly, an effusive molecular beam crosses a primary beam of fast neutral potassium (K) atoms. K + ions produced in a potassium ion source were accelerated to 50 -100 eV, before passing through an oven where they resonantly charge exchange with neutral potassium to produce a beam of fast (hyperthermal) atoms.…”
Section: Methodsmentioning
confidence: 99%
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“…22 The components were housed in two high-vacuum chambers at a base pressure of 10 5 Pa. A neutral potassium beam generated from a charge exchange chamber intersected at right angles an effusive molecular beam consisting of the target molecules. Atomic K + ions, obtained from a potassium ionic source, were accelerated through a chamber containing potassium vapour where they resonantly charge exchanged to form a beam of fast neutral K fast atoms.…”
Section: Methodsmentioning
confidence: 99%