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US 7,119,331 B2Granted
Nanoparticle ion detection
AssigneeAcademia Sinica
InventorsHuan-Cheng Chang, Wen-Ping Peng, Yong Cai
Life of this patent
Estimating the term…
Abstract
A nanoparticle ion detector includes an ion trap that receives charged particles ejected from a mass selection device. A laser beam illuminates the particles to induce fluorescence, which is detected by the photon detector. Particles are periodically dumped from the ion trap. A mass spectrum of the charged particles can be obtained by comparing signals from the photon detector with the particle ejection characteristics of the mass selection device.
Claims72
A method comprising:
- selectively ejecting ions out of a mass selection device based on mass-to-charge ratios of the ions;
- using an ion trap to collect the ions ejected from the mass selection device;
- detecting light emitted from the ions in the ion trap to generate a detection signal;
- and
- correlating the detection signal with characteristics of the mass selection device to determine a mass spectrum on the ions in the ion trap.
2 more elements
An apparatus comprising:
- a mass selection device to selectively eject charged particles based on mass-to-charge ratios of the charged particles;
- an ion trap to receive the charged particles ejected from the mass selection device;
- a detector to detect light emitted from the charged particles in the ion tap to generate a detection signal;
- and
- a data processor to correlate the detection signal with characteristics of the mass selection device to determine a mass spectrum on the charged particles in The ion trap.
2 more elements
An apparatus comprising;
- mass selecting means for selectively ejecting charged particles based on mass-to-charge ratios of the charged particles;
- an ion trap for receiving the charged particles elected from the mass selecting means;
- detecting means for detecting light emitted from the charged particles in the ion trap to generate a detection signal;
- and
- data processing means for correlating the detection signal with characteristics of the mass selecting means to determine a mass spectrum of the charged particles in the ion trap.
2 more elements
Dependencies are inferred from the claim text.