Scott D. Tanner

TL;DR: In this paper, the contribution of the rf field energy to the ion energy is modeled for a quadrupole reaction cell, and it is shown that the contribution increases with increasing rf amplitude and decreasing rf frequency.

TL;DR: It is shown that the number of collisions increases dramatically when the ion energies are reduced to near-thermal (< 0.1 eV), and considerations suggest that chemical reaction can be orders of magnitude more efficient at improving the analyte signal/background ratio than can collisional fragmentation.

TL;DR: In this paper, an operation of a low rf-amplitude quadrupole reaction cell in a bandpass mode, either rf only or with additional dc voltage between pole pairs, is shown to suppress in-cell interferences.

TL;DR: In this paper, an iterative procedure for the calculation of space charge in ion optical systems having cylindrical symmetry is described, and the mass-dependent kinetic energies of the ions resulting from the supersonic expansion of the beam through the interface are used to determine the impact of the space charge on the performance characteristics of ICP-MS instruments.

TL;DR: Novel methods for using metallointercalators that irreversibly bind DNA and low concentrations of rare earth metals added to cell growth media for rapid and sensitive measurement of cell numbers by mass spectrometry are described.