Abstract: Mass spectrometry cells include one or more interleaved magnetostatic and electrostatic lenses. In some examples, the electrostatic lenses are based on electrical potentials applied to magnetostatic lens pole pieces. In other alternatives, the electrostatic lenses can include conductive apertures. Applied voltages can be selected to trap or transport charged particles, and photon sources, gas sources, ion sources, and electron sources can be provided for various dissociation processes.

Abstract: Mass spectrometry cells include one or more interleaved magnetostatic and electrostatic lenses. In some examples, the electrostatic lenses are based on electrical potentials applied to magnetostatic lens pole pieces. In other alternatives, the electrostatic lenses can include conductive apertures. Applied voltages can be selected to trap or transport charged particles, and photon sources, gas sources, ion sources, and electron sources can be provided for various dissociation processes.

Abstract: Mass spectrometry cells include one or more interleaved magnetostatic and electrostatic lenses. In some examples, the electrostatic lenses are based on electrical potentials applied to magnetostatic lens pole pieces. In other alternatives, the electrostatic lenses can include conductive apertures. Applied voltages can be selected to trap or transport charged particles, and photon sources, gas sources, ion sources, and electron sources can be provided for various dissociation processes.

Abstract: Mass spectrometry cells include one or more interleaved magnetostatic and electrostatic lenses. In some examples, the electrostatic lenses are based on electrical potentials applied to magnetostatic lens pole pieces. In other alternatives, the electrostatic lenses can include conductive apertures. Applied voltages can be selected to trap or transport charged particles, and photon sources, gas sources, ion sources, and electron sources can be provided for various dissociation processes.

Abstract: Mass spectrometry cells include one or more interleaved magnetostatic and electrostatic lenses. In some examples, the electrostatic lenses are based on electrical potentials applied to magnetostatic lens pole pieces. In other alternatives, the electrostatic lenses can include conductive apertures. Applied voltages can be selected to trap or transport charged particles, and photon sources, gas sources, ion sources, and electron sources can be provided for various dissociation processes.

Abstract: Mass spectrometry cells include one or more interleaved magnetostatic and electrostatic lenses. In some examples, the electrostatic lenses are based on electrical potentials applied to magnetostatic lens pole pieces. In other alternatives, the electrostatic lenses can include conductive apertures. Applied voltages can be selected to trap or transport charged particles, and photon sources, gas sources, ion sources, and electron sources can be provided for various dissociation processes.

Abstract: The present invention provides methods of treating prostate cancer and benign prostatic hyperplasia using xanthohumol and/or a xanthohumol analog.

Abstract: Methods are disclosed for ascertaining whether molecules of a particular analyte are present in a sample. Molecules from the sample are passed into an electron monochromator in which the molecules are contacted by monochromatic electrons having a kinetic energy level within a range of greater than zero eV to less than about 6 eV. These energy levels are sufficient to form ions from at least a subpopulation of the molecules by electron capture by molecules of the subpopulation. The ions formed in the electron monochromator are then passed through a mass analyzer to obtain an ion spectrum which allows a determination to be made as to whether or not the ions profiled in the spectrum include ions produced from the analyte. Thus, the disclosed methods allow greatly enhanced detection of particular analytes of interest, such as explosives, drugs, pesticides, and other compounds of environmental, security, forensic, or other concern.

Abstract: Methods and apparatuses are disclosed for mass-analysis of a sample for particular analytes of interest. An electron monochromator is coupled to any of a number of different types of mass analyzer and used to generate slow electrons used to produce ions of target molecules for mass analysis. The electrons have a narrow energy bandwidth and high intensity, even at nearly zero kinetic energy levels. The median energy level of the electrons can be preset, permitting selection of specific target molecules to be ionized. Both positive and negative-ion mass analysis can be performed. Electron-capture negative-ion mass spectrometry is particularly enhanced, with a sensitivity about three orders of magnitude greater than in results obtained using conventional negative-ion equipment. Also, a buffer gas is eliminated, allowing substantial reductions in negative-ion equipment size, weight, and energy consumption.