Abstract:
An ion injector may include: a first electrode comprising a first region allowing ions to pass; and a second electrode disposed to enclose one end of the first electrode. The second electrode may include: a second region aligned with the first region to allow the ions to pass; and a protruding portion extending along the path of the ions passing through the second region. A mass spectrometer may be configured by disposing the ion injector adjacent to a skimmer.
Abstract:
An ion regulator for a mass spectrometer may include: a first extraction lens having a first hole through which ions can pass; and a second extraction lens electrically isolated from the first extraction lens and having a second hole which is aligned with the first hole so that the ions passing through the first hole can pass therethrough. The surface of the first hole may be inclined with respect to the moving direction of the ions. Use of the ion regulator will simplify the overall structure of a mass spectrometer and control parameters therefor, and will allow the development of a reliable and efficient compact mass spectrometer.
Abstract:
A Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR MS) includes: an ionization source generating ions; a deceleration lens, on which the ions generated by the ionization source and spatially dispersed are incident, selectively decelerating the incident ions so as to decrease the distance between the ions; and an ion cyclotron resonance cell on which the ions passing through the deceleration lens are incident. By preventing dispersing of ions due to mass difference and converging the ions using the deceleration lens, the mass range that can be measured at one time can be extended. Also, measurement sensitivity can be improved since the ions are effectively introduced to the ICR cell.
Abstract:
A lens for electron capture dissociation may include: a first electrode and a second electrode spaced apart from each other and arranged along a first direction; and a third electrode and a fourth electrode spaced apart from each other and arranged along a second direction perpendicular to the first direction. The first electrode and the second electrode may be disposed in a space in which a magnetic field is formed in the first direction and trap electrons. The third electrode and the fourth electrode may be in the form of a flat plate and may apply an electric field to the trapped electrons in the second direction.
Abstract:
A Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR MS) may include: a signal generator generating a sinusoidal, first voltage signal having a DC offset; a voltage amplifier receiving the first voltage signal from the signal generator and generating a second voltage signal by amplifying the first voltage signal; and an ion cyclotron resonance (ICR) trap receiving the second voltage signal and generating an ion cyclotron motion centered on the position determined by the DC offset.
Abstract:
An apparatus for electrospray ionization may include: a platform including an inlet port, a first channel connected to the inlet port, a second channel connected to the first channel, and an outlet port connected to the second channel; a nebulizer provided in the first channel and configured to spray inert gas to a sample sprayed into the first channel through the inlet port; and a focusing lens provided in the second channel and configured to focus ions produced from the sprayed sample toward the outlet port.
Abstract:
A tandem Fourier transform ion cyclotron resonance mass spectrometer is provided. In the mass spectrometer, the ions selected by a FT-ICR mass analyzer, which can perform an ion selection process and a mass measurement process with a time interval between the processes, are transmitted through an ion guide to a collision cell, which is located a predetermined distance from the FT-ICR mass analyzer, to split into fragment ions. The fragment ions are transmitted to the FT-ICR mass analyzer that measures the mass of the fragment ions. The fragment ions are generated in the collision cell 60 established separately from the FT- ICR mass analyzer 40 according to the mass spectrometer. Accordingly, It can solve various problems (e.g., the radius reduction of cyclotron motion of colliding ions, or the removal of periphery gas after generating the fragment ions) occurred in a tandem mass spectrometer using a conventional tandem-in-time mass analysis method. Also, a high resolution and hith sensitivity measurement can be achieved. Moreover, when a reagent gas instead of a collision gas in the collision cell is injected, the gas phase reaction of the selected ions and the reagent gas can be observed, and the mass of the ions generated in the gas phase reaction can be measured.
Abstract:
A mixed gas cluster ion beam generator may include a nozzle chamber to contain a first mixed gas which is a mixed gas that is a mix of a first gas and a second gas, a cluster nozzle to spray gas received from the nozzle chamber in a cluster form, an ionizer to ionize a gas cluster sprayed by the cluster nozzle, and an ion accelerator to emit an ion beam to the outside by accelerating the gas cluster ionized by the ionizer by generating a potential difference to the ionized gas cluster.