Wide-energy-spectrum-range charged particle spectrograph

Abstract

The invention discloses a wide-energy-spectrum-range charged particle spectrograph. The charged particle spectrograph comprises a collimator, a magnetic field generating device, an electronic detectorassembly, an insulating disc, an electric field generating device, an ion detector assembly and an aiming laser assembly. According to the wide-energy-spectrum-range charged particle spectrograph ofthe invention, charged particles generated by laser acceleration pass through the collimator and are injected into the magnetic field generating device, and then electrons are deflected to an electrondetector on a side surface of the magnetic field generating device and are recorded; ions penetrating out of the magnetic field generating device are injected into the electric field generating device and then are deflected to an ion detector so as to be recorded; since the electrons are only subjected to the action of a magnetic field, and the ions pass through the electric field generating device after passing through the magnetic field, different types of ions are distinguished; the magnetic field distribution of the magnetic field generating device has a rising edge, so that an electron energy diagnosis threshold value can be reduced under the condition of meeting high-energy end diagnosis requirements; and therefore, the wide-energy-spectrum-range diagnosis of electrons and ions withthe same space solid angle can be realized.

Description

technical field [0001] The invention relates to the fields of plasma physics and nuclear detection, in particular to a charged particle spectrometer with a wide energy spectrum range. Background technique [0002] At present, in high-field laser plasma physics research and inertial confinement fusion research, the type and energy spectrum of charged particles generated by the interaction between laser and target is a key parameter related to the experimental physical process. In experiments, electron spectrometers are usually used to diagnose electrons and Thomson spectrometers are used to diagnose ions. But in physics research, ion acceleration is related to electrons, so it would be more helpful for particle research if electrons and ions in the same solid angle of space could be diagnosed at the same time. Since the mass of electrons and ions is very different (the mass of electrons is 1 / 1836 of the mass of protons), it is difficult to realize the diagnosis of electron a...

AI Technical Summary

Problems solved by technology

For such a collimation hole, for low-energy electrons, the track deviation caused by a little magnetic flux leakage may prevent the electrons from being injected into the spectrometer.

Therefore, it is difficult for the existing conventional Thomson spectrometer or electron spectrometer to realize the energy spectrum diagnosis of electrons and ions in the same energy range in the wide energy spectrum range (1-100MeV).

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