17 results about "Atomic energy" patented technology

This invention relates to the field of detection, and in particular to an online method and system for detecting impurities in calcium carbonate ore. Specifically, it includes: acquiring a continuous multispectral image sequence of calcium carbonate ore on a conveyor belt, and performing radiometric correction and spectral normalization preprocessing; identifying dominant spectral clusters of pure calcium carbonate ore by statistically analyzing the pixel spectra of the preprocessed images, and selecting a subset of high-confidence pixel spectra as the initial background training set; training a background dictionary, applying a set of sparse regularization constraints during training, and using the correlation between spectral bands to constrain the atomic energies of the dictionary to continuous or strongly correlated band groups; for each pixel of the detected image, using a sparse approximation algorithm combined with the background dictionary, calculating a sparse reconstruction coefficient vector and a reconstruction residual vector, and obtaining the reconstruction residual and coefficient activation uncertainty measure, respectively; if the reconstruction residual exceeds a first threshold, or the uncertainty measure exceeds a second threshold, it is determined to be an impurity point, and the location and quantity are summarized to generate an online impurity distribution map.

The application belongs to the technical field of radio frequency electromagnetic field measurement, and particularly discloses a quantum field intensity measurement method and system of offset electric field regulation, which comprises the following steps: selecting a Rydberg atomic energy level close to resonance according to the microwave frequency of a measured signal; determining a coupling light wavelength according to the Rydberg atomic energy level, preparing a Rydberg atom, simultaneously obtaining a difference value between the microwave frequency of the measured signal and a resonance transition frequency, and obtaining an energy level offset value according to the difference value; obtaining a polarizability of the Rydberg atomic energy level, obtaining an offset electric field value to be applied according to the energy level offset value and the polarizability; and starting the offset electric field according to the offset electric field value, so that the relevant energy level of the Rydberg atom produces a movement in the offset electric field; when the energy difference between the offset Rydberg energy level and the adjacent energy level resonates with the microwave frequency of the measured signal, the offset sub-energy level forms an energy level splitting, and a frequency splitting is generated, and the electric field of the measured signal is measured according to the interval between the frequency splittings.

The present invention discloses a method, device and storage medium for determining the irradiation cascade range of a close-packed hexagonal crystal, which relates to the technical field of cascade range calibration, and is mainly capable of improving the efficiency and accuracy of determining the irradiation cascade range of a close-packed hexagonal crystal. In response to a determination signal of the irradiation cascade range of a close-packed hexagonal crystal to be detected, the irradiation process of the close-packed hexagonal crystal to be detected is simulated, and during the simulation process, off-site cascade process data of cascade collisions of atoms in the close-packed hexagonal crystal to be detected when irradiated by incident particles is obtained; based on the off-site cascade process data, an off-site cascade process diagram of the close-packed hexagonal crystal to be detected is determined; a preset calibration algorithm is used to perform a rough calibration of the off-site cascade process diagram to obtain an initial cascade range; the atomic energy difference between each atom within the initial cascade range is determined, and based on the atomic energy difference, the cascade range of the close-packed hexagonal crystal to be detected is determined within the initial cascade range.

The invention relates to a method for researching the influence of ablation on the wave-transparent performance of a radome material, which is used for researching the ablation wave-transparent performance of a radar radome material, and is used for designing a testing device at the downstream of an electric arc heater by taking electric arc heater ground testing equipment as a support and combining with special requirements of an antenna window ablation test, so that two test pieces are simultaneously ablated, and the wave-transparent performance of the radome material is improved. A microwave testing system is used for measuring microwave transmission performance change conditions before, during and after ablation of an antenna window material, rotating target X-ray diffraction analysis, atomic energy spectrum analysis and electrical performance measurement are carried out on a test piece before and after a test, and subsequently, reasons of wave transmission performance change of the material after ablation can be analyzed from a microscopic perspective; and support is provided for a material development department.

The invention discloses a partial discharge detection method and device based on a Rydberg atomic electric field sensor, belongs to the technical field of partial discharge detection, and solves the problem that the sensor is easily damaged by electrical breakdown in a strong electric field environment in an existing partial discharge detection technology. A ground state cesium atom is excited to a Rydberg state, based on a free space coupling configuration mode, a to-be-measured radio frequency signal is directly propagated into an atomic gas chamber through a free space to be coupled with the Rydberg atom, an atomic energy level is displaced, the transmissivity of an electromagnetically-induced transparent spectrum is changed, electric field information is encoded into an optical signal, and the optical signal is transmitted to the ground state cesium atom. And then the photoelectric detector is used for converting the modulated optical signal into an electric signal, the electric signal is input into the oscilloscope for time domain waveform analysis, and based on an electrical-optical-electric signal conversion mechanism, the common electric breakdown risk in the traditional ultrahigh frequency detection technology is effectively avoided.

The invention relates to a tunable laser frequency stabilization system and method based on Rydberg atom direct current stark, and belongs to the technical field of laser frequency stabilization. The tuned frequency is determined by the atomic state and the voltage at the two ends of the polar plate and can be calculated through a theoretical model, the locked laser frequency has high precision and long-term stability, and the precision and the long-term stability are within MHz. In the invention, the atomic gas chamber with the built-in electrode plate is adopted to avoid the problem that a traditional gas chamber can shield a direct-current electric field, a direct-current electric field can be generated in the atomic gas chamber by applying a voltage to the two ends of the electrode plate, and an atomic energy level moves due to a direct-current stark effect, so that the tuning of the frequency of the coupled laser can be completed; the applied voltage is generally below 10V, the tuning range is between GHz and dozens of GHz according to different selected Rydberg states, and the operation is relatively convenient and simple.

This invention discloses a laser isotope mass spectrometer, which consists of a controller, a LIBS subsystem, an SLRI subsystem, a timing controller, an ion transport primary focusing module, and a TOF mass analyzer. The beneficial effects of this invention are that the combination of LIBS laser and secondary laser resonance ionization (SLRI) allows for simultaneous preliminary analysis of elemental composition and content during the first LIBS ionization; based on the prior knowledge of the isotopic atomic energy levels of elements obtained from the first LIBS ionization, the resonance wavelength can be preferentially selected during the secondary resonance ionization. The four-channel SLRI optical path configuration enables tunable laser output from ultraviolet to infrared, and the application of ion focusing mirrors and reflectors enables spatiotemporally synchronized focusing and high-resolution mass sensing.

The present invention discloses a method and device for manipulating the center-of-mass motion of optically suspended particles. Optical tweezers are used to simultaneously suspend a three-level atom and a nanoparticle in an optical cavity. The optical cavity is driven by an external laser to form a stable standing wave light field within the cavity. The cavity light field acts as a bridge to couple with both the atomic energy level transition and the particle center-of-mass motion. By regulating the atomic energy level transition, the nanoparticle center-of-mass motion can be switched between Fock states #imgabs0#, thereby achieving precise manipulation of the particle center-of-mass motion.

The invention relates to the technical field of laser, in particular to a wide-range continuous detuning system for modulation transfer spectrum frequency stabilization, which comprises an MTS light path unit, an atom gas chamber unit containing alkali metal atoms and a strong magnetic field applying unit for applying a strong axial magnetic field around the atom gas chamber. An atomic energy level enters a hyperfine Paschen-Bark effect region, the atomic transition resonance frequency of the atomic energy level is subjected to remarkable and approximately linear displacement, and the MTS light path unit locks the laser frequency on an atomic spectral line after the displacement, so that the wide-range, high-precision and continuously adjustable detuning of the laser output frequency relative to the atomic zero field resonance frequency is realized, and the high-precision, high-precision and continuously adjustable detuning of the atomic zero field resonance frequency is realized. The invention provides key technical support for applications such as quantum precision measurement requiring a specific wide-range detuning stable laser source.

The present disclosure provides a method for determining the electron temperature of xenon plasma based on a radiation collision model, comprising: determining the rate equation of atomic energy levels in a steady-state approximation state; determining the dominant particle reaction type in the xenon plasma in a Z-pinch fusion; determining the rate balance equation of the xenon plasma according to the dominant particle reaction type in the xenon plasma and the rate equation of atomic energy levels in the steady-state approximation state; determining the population density ratio of adjacent energy levels; determining the simplified rate balance equation of the xenon plasma according to the population density ratio of adjacent energy levels; determining the spectral line intensity ratio; and determining the electron temperature of the xenon plasma according to the simplified rate balance equation of the xenon plasma, the spectral line intensity ratio, and a preset Boltzmann equation. By the present disclosure, the electron temperature of the xenon plasma under the Z-pinch condition is calculated simply by the relative light intensity line ratio method, the data processing amount is reduced, and the data accuracy is improved.

The invention discloses a multi-frequency magnetic field communication method and system based on alkali metal atom magnetic field measurement. The method comprises the following steps: firstly, constructing a multi-frequency physical layer carrier wave; the static magnetic field B0 is used for regulating and controlling atomic energy level splitting; generating at least two groups of discrete magnetic resonance frequencies through optical polarization and alternating magnetic field excitation; wherein mistuned laser is adopted to pump atomic energy levels corresponding to all resonant frequencies at the same time, and the signal-to-noise ratio difference of each frequency channel meets a preset value by regulating and controlling the optical wavelength, the optical power and the polarization elliptic polarization of light; and finally, receiving and transmitting multi-system frequency shift keying communication signals, mapping binary data streams to a carrier frequency combination, and restoring data by a receiving end through a multi-channel synchronous demodulation algorithm. According to the invention, the second-order Zeeman effect of the trona metal isotope or the elementary atom is utilized to realize high-robustness communication in a non-magnetic shielding environment, so that the communication reliability is improved; meanwhile, a single-air-chamber structure is adopted, redundant optical assemblies are saved, and the system integration degree is remarkably optimized.

The present invention discloses a method for generating atomic spin orientation in an atomic ensemble. The method includes providing a steady magnetic field (5) to the atomic ensemble to cause Zeeman splitting within a first manifold and a second manifold of the ground state of the atomic energy levels of the atomic ensemble. The method includes pumping the atomic ensemble with an electromagnetic light radiation beam that is detuned due to transitions involving the first manifold, such that a majority of the atomic population of the first manifold in the atomic ensemble is transferred from the first manifold to magnetic Zeeman sublevels of the second manifold. A system for generating atomic spin orientation in an atomic ensemble is also disclosed.

The embodiments of this application relate to the field of computational materials science, and particularly to a method and computer storage medium for simulating the precipitation process of hydrides in metals. The method includes the following steps: S10: determining the relationship between atomic energy and lattice structure of a metal solid solution, the metal, and the hydride, wherein the metal solid solution is a mixture of metal and hydrogen; S20: constructing a neural network model of atomic energy and lattice structure; S30: training the neural network model of step S20 using the relationship between atomic energy and lattice structure determined in step S10; S40: simulating the precipitation process of hydrides in metals using molecular dynamics and Monte Carlo methods based on the neural network model determined in step S30. The method provided in this application considers metal solid solutions, can reflect the precipitation process of hydrides, and thus can achieve accurate simulation of the precipitation process of metal hydrides under microscopic conditions, which is beneficial for guiding the design of hydrogen-resistant embrittlement metal materials.

The present invention relates to a near-field testing system and method for circularly polarized antenna parameters. Existing circularly polarized antenna testing technology cannot meet practical requirements. Therefore, based on novel electromagnetic quantum detection technology, the present invention utilizes the coupling relationship between electromagnetic waves and Rydberg atoms, as well as the relationship between the atomic energy level wave function in the Rydberg state and the response state of electromagnetic waves. By cleverly designing a laser path and utilizing the interaction between lasers and alkali metal atoms, and using a heterodyne method related to Rydberg atom-based electromagnetic wave phase measurement, the system innovatively solves the problem of real-time, in-situ measurement of the horizontal and vertical polarization characteristics of circularly polarized electromagnetic waves. This method effectively and synchronously completes the testing of circularly polarized antennas, measures the relative phase difference between the two polarization directions, and thereby determines the left-handed and right-handed characteristics of the circularly polarized antenna. This significantly solves the problem of determining left-handed and right-handed polarization characteristics in circularly polarized antenna testing.

The invention discloses a neutron moderator, a neutron moderator, a preparation method and application, and belongs to the technical field of neutron moderation. The neutron moderator comprises a cage-shaped hydrate formed by water and hydrogen-containing gas, and the cage-shaped hydrate contains isotope deuterium of hydrogen. The neutron moderator contains a large number of H atoms and D atoms, and the neutron moderation efficiency can be improved. Moreover, the hydrogen-containing gas in the cage-shaped hydrate is bound in the cage-shaped frame, and the neutron absorption cross section of bound-state hydrogen is reduced, so that the neutron flux can be improved, and the loss of the number of neutrons is reduced.

The application discloses a neutral atom detection device suitable for a wide energy range, which comprises: an ionization deflection system for ionizing neutral atoms incident from space into positively charged ions, capable of shielding charged particles incident from space, the ionization deflection system having a first detection channel and a second detection channel arranged at intervals along a first direction; the first detection channel and the second detection channel are both arranged as gaps formed by a set of oppositely arranged deflection plates; the voltage polarity of adjacent deflection plates between the two sets of deflection plates is the same; and an electrostatic analyzer comprising an outer hemisphere and an inner hemisphere, the outer hemisphere and the inner hemisphere having a third channel therebetween, the third channel being used for the deflection movement of the entering positively charged ions, and the voltage applied by the inner hemisphere being used for the energy analysis of the positively charged ions entering the third channel; the energy range of the neutral atoms suitable for detection by the first detection channel is below 5keV, and the energy range of the neutral atoms suitable for detection by the second detection channel is below 30keV.

The invention discloses a method for measuring a radio frequency electric field based on a high orbital angular momentum quantum state, and the method comprises the steps: firstly, detecting the radio frequency electric field through the high orbital angular momentum quantum state of Rydberg atoms, enabling the Rydberg atoms to continuously measure the radio frequency electric field in a certain frequency range through an external magnetic field or electric field regulation method, and enabling the Rydberg atoms to continuously measure the radio frequency electric field in a certain frequency range; and the frequency range of the Rydberg atom-based electric field meter for measuring the radio frequency electric field is expanded. According to the method, measurement is carried out in a resonance mode, resonance frequency points are matched, an electric field and atoms have stronger coupling at the resonance frequency points, and more sensitive measurement can be realized through electric dipole transition; besides, a mode of introducing an external field for regulation and control is proposed, Zeeman splitting of atomic energy levels can be precisely regulated and controlled by changing the size of an external magnetic field, or the external electric field is utilized for regulating and controlling the overall movement of Rydberg energy levels, so that the energy level interval is matched with the field intensity frequency to be detected, and the frequency range of the detectable electric field is further expanded.