โ Scribed by R.S. Freund
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Metastable H(2s), H2(c3&), and probably O(%') fragments are formed by electron-impact dissociation of H20. The fragment translational energies are given by time-of-flight measurements and their identities and electronic states are determined by approximate threshold energies and deuterium isotope shifts.
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An apparatus containing cross nlolecular and pulsed electron beams has been used to obtain distributions in kinetic cncryy 2nd angle of fast ( ,> 0.5 cV) positive ions producrd through dissociative ionization of N2 and 0, by impact of 50 to 200 cV electrolls. Four m;lin 0' ion groups arc observed w
## OMS Letters Dear Sir, Fragmentation of 0-Isopropylidene Derivatives of 1,2-Diols on Electron Impact 1,3-Dioxolanes are often employed in organic synthesis to protect carbonyl groups and diols.1.2 The mass fragmentations of ethylene acetals of aldehydes and ketones have been intensively and all