Device and method for determining linear ion trap RF resonance adsorbing signals

A technology of resonance absorption and detection device, which is applied in the field of atomic and molecular physics to achieve the effects of high precision, high sensitivity and improved sensitivity

Inactive Publication Date: 2004-12-08
WUHAN INST OF PHYSICS & MATHEMATICS CHINESE ACADEMY OF SCI
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Problems solved by technology

[0006] The object of the present invention is to provide a detection device for a linear ion trap radio frequency resonance absorption signal, which uses a lock-in amplifier to replace the narrow-band amplifier of the existing detection device, and uses the same oscillation source signal to separate three homologous Signals of different frequencies solve the synchronization problem between the external reference channel and the signal channel of the lock-in amplifier, and effectively improve the sensitivity of the detection system

Method used

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  • Device and method for determining linear ion trap RF resonance adsorbing signals
  • Device and method for determining linear ion trap RF resonance adsorbing signals
  • Device and method for determining linear ion trap RF resonance adsorbing signals

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Embodiment Construction

[0028] Below in conjunction with accompanying drawing, the present invention will be further described:

[0029] Depend on figure 1 It can be seen that the detection device of a linear ion trap radio frequency resonance absorption signal of the present invention consists of a homologous signal generator 1, a radio frequency power amplifier 2, a lock-in amplifier 3, a computer 4, a confined field step-up transformer 5, and a linear ion trap 6. The ground point 7 and the coupling capacitor 8 are composed. The homologous signal generator 1 outputs three signals, the first signal is a 500 kHz square wave signal to the RF power amplifier 2, the second signal is a 550 kHz sine wave signal to the coupling capacitor 8, and the third signal is 50 kilohertz square wave to lock-in amplifier 3; RF power amplifier 2 amplifies the first signal received into a sine wave signal, and the computer 4 scans and controls its output amplitude; the prison field step-up transformer 5 will come from ...

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Abstract

The device is composed of congeneric signal generator, radio frequency power amplifier, phase-lock amplifier, computer, step up transformer of confinement field, linetype ion trap, earthing, terminal and coupling capacity. The method uses phase-lock amplifier to replace narrow band amplifier used on the existing detection device and uses one oscillation source signal to work out three signal in different frequency with the same source.

Description

Technical field: [0001] The invention relates to atomic and molecular physics, more specifically to the detection of ion trap radio frequency resonance absorption signals. Background technique: [0002] Ion traps can store ions for a long time, and a nearly isolated ion system can be obtained, creating a clean "free space" for the ions to be studied. It provides an ideal research object for basic research in physics. In the field of applied research, as a new generation of high-precision, high-stability ion frequency standard, the prospect is widely optimistic. Therefore, the ion trapping technology in ion trap physics and related experimental techniques and signal detection methods are one of the important components in the experiment. [0003] There are many ways to detect trapped ion signals, among which radio frequency resonance absorption detection is easier to realize. The principle is: the ions trapped in the trap move at a specific frequency, and a weak detection ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/00
Inventor 李交美高克林朱燕舞邵辉丽朱熙文
Owner WUHAN INST OF PHYSICS & MATHEMATICS CHINESE ACADEMY OF SCI
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