摘要:
The present invention refers to a system that comprises an ion source, wherein the system is capable of imaging the ion source in a first mode, and the system is capable of using the ion source to collect an image of a sample in a second mode, the sample being different from the ion source.
摘要:
This device (2) for generating an ion beam (4), which includes a liquid metal ion source (18), is characterized in that the ion source is surrounded by a cryogenic trap (28) maintained at a low temperature, this cryogenic trap being capable of trapping volatile chemical species (G) by condensing them before they can reach the ion source.
摘要:
Disclosed are charged particle systems that include a tip (504), at least one gas inlet (512a-f) configured to supply gas particles to the tip, and a element (506) having a curved surface (514) positioned to adsorb un-ionized gas particles (182a-d), and to direct desorbing gas particles to propagate toward the tip. The charged particle systems can include a field shunt connected to the tip, and configured to adjust an electric field at an apex of the tip.
摘要:
Charged droplet spray is formed from a solution with all or a portion of the charged droplet spray current generated from reduction or oxidation (redox) reactions occurring on surfaces removed from the first or sample solution flow path. In one embodiment of the invention, two solution flow channels are separated by a semipermeable membrane. A first or sample solution flowing through the first solution flow channel exchanges cation or anion charged species through the semipermeable membrane with a second solution or gas flowing through the second flow channel. Charge exchange is driven by the electric field applied at the charged droplet sprayer sample solution outlet. Redox reactions occur at an electrode surface in contact with the second solution. The invention increases the control and range of the Electrospray ionization process during ES/MS operation. Alternative embodiments of the invention provide for conducting redox reactions on conductive surfaces removed from the first or sample solution flow path but not separated by semipermeable membranes.