Laser multiphoton dissociation of alkyl cations: 2. Structure-specific fragmentation patterns of isomeric alkyl cations produced from their iodides

Photodissociation in a reflectron time-of-flight mass spectrometer: a novel mass spectrometry/mass spectrometry configuration for high-mass systems

“…However, the applications of these instruments have been limited because of their low mass resolution. In recent developments, resolution limits on TOF instruments have been improved dramatically by the use of the "reflectron" configuration (1)(2)(3)(4)(5)(6). Resolution in reflectron TOF systems has been demonstrated in the range of several thousand atomic mass units (1)(2)(3)(4)(5)(6).…”

“…In recent developments, resolution limits on TOF instruments have been improved dramatically by the use of the "reflectron" configuration (1)(2)(3)(4)(5)(6). Resolution in reflectron TOF systems has been demonstrated in the range of several thousand atomic mass units (1)(2)(3)(4)(5)(6). This performance is now acceptable for many demanding applications.…”

“…At the precise arrival time of the ion packet to be selected, the deflection voltage pulses to ground, transmitting that ion packet to the reflection region. The reflection region of our instrument is constructed like those described previously (1)(2)(3)(4)(5)(6). The angle between the two flight tubes is 12°, determined by other geometrical constraints in the molecular beam machine.…”

“…While we have made preliminary observations of fragment ion loss from diatomic and triatomic metal parent ions, we have not measured any noticeable broadening in arrival time spectra. One of the initial applications of reflectron instruments was in the study of metastable ion decay (2,5,6). These experiments used the slow overall time scale for ion drift in the first flight tube, deceleration, and reacceleration to probe microsecond metastable lifetimes.…”