Time-of-flight detection

Carda-Broch, S., Berthod, A. and Armstrong, D. W., Ionic matrices for matrix-assisted laser desorption/ionization time-of-flight detection of DNA oligomers. Rapid Commun. Mass Spec., 17, 553, 2003. 

MALDI-ToF Matrix-assisted laser desorption ionization - time of flight (detection) ... 

Mitchel et al. [235] have utilized the potential of neutron diffraction to further study the PPy-pTS system. The pulsed neutron source ISIS (Rutherford Appleton Laboratory) permits one to use time-of-flight detection with one or more static detectors [236]. Two detectors have been used simultaneously to collect the data for parallel and perpendicular directions, comparable to the x-ray data shown before. In this way the radiation is used very efficiently, and very thin samples can be examined (10-20 pm [229]). Additionally, angle-dependent absorption corrections are avoided. The requirement of a low hydrogen content of the... 

We will show the time and spatial evolution of the concentration of an important radical as well as reactants. We also show simultaneous flash Schlieren pictures of the ignition to characterize the physical aspects of the ignition process and of the sampling method. Our first results of time-of-flight detection which yield greatly enhanced time resolution will be presented for oxygen. A comparison of these experiments with the unchopped signal enhances the value of the data presented. 

As a further soft ionisation method plasma desorption (PD) has been developed [25]. The nucleic decay of Cf results in two 100 MeV products that desorb the analyte molecules from a nitrocellulose-coated film and also give the starting signal for the pulsed time-of-flight detection. 

These workers have also been using high-speed GC with mass spectrometry detection including time-of-flight detection. ... 

The structures of the macrocycles and linear polymers were analyzed by matrix-assisted laser desorption ionization with time of flight detection (MALDI-TOF) [71]. 

The chemistry of the processes occurred in the above system was studied by FTIR and matrix-assisted laser desorption ionization technique with time of flight detection (MALDI-TOF). On the basis of the results obtained, a scheme of the simultaneous and sequential reactions with formation of BP, BPT, and some intermediate and additional products, including possible substituted cyanurate, isocyanurate, and mixed triazine cycles was proposed [63]. 

Thus, if the energy loss (ha>) and momentum transfer in a given crystal direction (AK) can be obtained by time-of-flight detection of the probe particles, we can determine the diffusion constant. Considering the intensity, we get... 

---