Cyclic mass-spectrometer of gas particles. RU patent 2504044.

IPC classes for russian patent Cyclic mass-spectrometer of gas particles. RU patent 2504044. (RU 2504044):

H01J49/00 - Particle spectrometers or separator tubes (for measuring gas pressure H01J0041100000)

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FIELD: instrument making.

SUBSTANCE: cyclic mass spectrometer of gas particles comprises a receiver of ions, three toroidal deflectors, a unit of processing of ion spectra and grounded nets is additionally equipped with an ion source, connected to a unit of spectra processing, a pushing net connected to a generator of pushing pulses, a diverting electrode, connected to a generator of diverting pulses, a generator of diverting voltage of toroidal deflectors connected to external reflecting electrodes, voltage generators are connected to a synchronisation device, toroidal deflectors are arranged one after another and provide for cyclic flight of ions. In the drift space there are levelling nets and a focusing device, which represent quadripoles or focusing rings.

EFFECT: expanded range of investigated masses with increased resolving ability.

1 dwg

The invention relates to the instrument engineering, automation and control systems, namely, the field of space research, and can be used in the course of a natural experiment to measure the elemental composition of the outer self atmosphere of a spacecraft.

This device mass spectrometer (patent RU 2235386 C2, IPC H01J 49/40, publ. 27.08.04)containing the target, four toroidal deflecting systems and ion collector.

Drawbacks of the device are single use each baffle with the flight ion packages and fixed the range of masses.

As the prototype is set mass spectrometer (patent RU 2326465 C2, IPC H01J 49/40, publ. 20.01.08), containing a hemispherical target, grounded grid, four receiver ions, four toroidal baffle, each of which consists of internal reflector and an external reflecting the electrode voltage source, processing unit of the ion spectra, indicating unit, hemispherical grid, cylindrical grid parabolic reflector and a parabolic grid.

The downside is the prototype fixed deflecting voltage and, therefore, limited the range of masses.

In the basis of the invention is to improve the functionality of the device (expansion of the range of the studied masses while maintaining or increasing the resolution of the device).

The task is solved by the fact that the cyclical mass spectrometer gas particles containing ion collector, three toroidal baffle, each of which consists of the external reflecting the electrode and internal reflecting the electrode, the processing unit of the ion spectra and grounded grid, according to the invention further equipped with ion source connected to the processing of spectra, pushing the net which is connected to the generator of push pulses, deflecting electrode connected to the generator deflecting pulses generator deflecting voltage toroidal deflectors, connected to external reflecting the electrodes, generators voltages are connected to the device synchronization, toroidal vents located together and provide a cyclic span ions in the drift space installed leveling grid and representing or focusing ring.

The drawing is a block diagram of the device.

Device to determine the elemental composition of gases consists of the block of processing of 1 connected to a sync 2 and receiver ion 3, ion source 4 connected to a sync 2, generator push impulses 5, connected to the accelerating grid 6 and device synchronization 2, generator deflecting pulses 7, connected to the yoke grid 8 and device synchronization 2, generator deflecting voltage toroidal deflectors 9, connected to external - toroidal deflectors 10 and device synchronization 2, grounded plates toroidal deflectors 11, grounded electrode rejects period of 12 lining the nets 13 and 14.

The device works as follows. Control unit 1 delivers the control command in the device synchronization 2, command contains the necessary data, including levels of stress on the external toroidal deflectors 10, as well as the estimated time of filing the deflecting pulse. Device synchronization 2 delivers pulses source of ions 4, ion source ionizes the substance inside the accelerating gap (between the levelling mesh 13 and accelerating sect 6). Then the device synchronization 2 gives a command to the generator of push impulses 5, which, in turn, submits that pushes the impetus for accelerating grid 6. Also the device synchronization 2 gives a command to the generator deflecting voltage 9, in accordance with the specified voltage level on the external toroidal deflectors 10. Ions, flying from the accelerating gap, get in the first toroidal deflector, inside which there is a separation of ions on the masses. Jonah, do not meet the specified facing 10 voltage, settle on one of the plates toroidal baffle the other ions pass through toroidal deflector, the leveling grid 13, which ensures the uniformity of field in the drift space, through a focusing system 14, through another leveling grid 13 in the following toroidal deflector, then, ions in the same way pass through two toroidal baffle and re-enter the first, thus their path is closed and the cycle repeats again. When reaching the estimated time of filing the deflecting pulse device synchronization 2 gives a signal generator deflecting pulses 7, which in turn transmits the deflecting the impulse of a deflector grid 8, ion beam unfolding in the ion collector 3. Varying the voltage on the external toroidal baffles 10, as well as the estimated time of filing the deflecting pulse, you can scan the masses throughout is of interest range of masses, thus increasing the time of the filing of the deflecting pulse with preservation of a given level of stress on the external toroidal deflectors 10, you can increase the time span ions appropriate mass, which in turn allows to increase resolution in this region of the spectrum.

Cyclic mass spectrometer gas particles containing ion collector, three toroidal baffle, each of which consists of the external reflecting the electrode and internal reflecting the electrode, the processing unit of the ion spectra and grounded grid, wherein the additionally provided with an ion source connected to the processing of spectra, pushing the net which is connected to the generator of push pulses, deflecting electrode connected to the generator deflecting pulses generator deflecting voltage toroidal deflectors, connected to external reflecting the electrodes, generators voltages are connected to the device synchronization, toroidal deflectors are to each other and provide a cyclic span ions in the drift space installed leveling grid and representing or focusing ring.