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RSS2023 Vol. 35, No. 7
- Cover and Contents
- Laser Damage of Optical Elements
- High Power Laser Physics and Technology
- Inertial Confinement Fusion Physics and Technology
- High Power Microwave Technology
- Particle Beams and Accelerator Technology
- Pulsed Power Technology
- 核科学与工Nuclear Science and Engineering
- Nuclear Science and Engineering
- Advanced Interdisciplinary Science
KDP-family crystals are the only nonlinear optical crystal material according with the optical aperture of ICF laser drivers. As KDP-family crystals are grown by aqueous solution method, the macroscopic inclusions and microscopic lattice defects easi...
Under continuous laser irradiation, the damage threshold of fused silica and other optical materials will continue to decrease, showing the “fatigue effect”, which seriously affects the life and stability of the repetition frequency optical system. T...
The surface damage characteristics in DKDP crystals under laser irradiation at 355 nm and 1064 nm were studied and compared by using a Nd: YAG laser. The damage precursors and mechanisms corresponding to each damage morphologies were analyzed. The da...
The absorption front model for laser induced damage of optical materials is modified. Different from the original model, the impurity defect absorption term is introduced, and the one-dimensional model is extended to a three-dimensional model. Using ...
The green laser can be used for the processing of highly reflective metals such as copper. Compared with the 1 μm laser which is broadly used now, green laser has the absorption efficiency nearly an order of magnitude higher, which can better meet th...
Nanosecond (ns) pulsed laser with high average power and high repetition rate is a potential solution for laser cutting, laser welding and many other processing applications. With the increase of pulse repetition rate, especially when it is higher th...
In this paper, we report a simple structure, room-temperature operation, LD end-pumped 2.94 μm Er:YAG continuous wave laser. The laser uses double-ended bonded YAG end caps to reduce the end-surface temperature of the crystal. The pump source uses a ...
To achieve an optoelectronic tracking platform based on biprisms, it is necessary to accurately calculate the angle of the Risley prisms based on the beam direction. This article uses non-paraxial ray tracing method and two-step method to fit the rel...
The history and development about the study of positrons generated by intense laser interaction with the plasmas are introduced. The mechanisms of the positron generation are presented. Specially, the typical experiment scheme (direct and indirect) o...
To solve the problem of reconstructing two-dimensional shock wave fringe from compressed image obtained from Compressed Ultrafast Photography (CUP) and two-dimensional Velocity Interferometer System for Any Reflector (VISAR), a compressed image recon...
To meet the requirement of high-power nanosecond pulse emission, an ultra-wideband combined antenna for high-power microwave is designed. Voltage standing wave ratio (VSWR) and electric field distribution of high-power ultra-wideband combined antenna...
The theoretical analysis and simulation on the permanent magnet guidance system of the E-type waveguide oscillator are developed. Firstly, the theoretical analysis of the modified paraxial ray equation, the minimum magnetic field under relativistic c...
Perturbation theory of multi-cell superconducting radio-frequency (SRF) cavities, which is widely used in analysis of field flatness adjustment, is briefly described, and theoretical calculation method of field flatness is deduced. Multi-field couple...
High Energy Photon Source (HEPS), as a 4th generation synchrotron radiation light source, has stringent requirement for beam orbit stability: the orbit fluctuations should be below 10% of the beam RMS sizes in both horizontal and vertical directions ...
Based on the AC-LinkTM energy conversion method, this paper improves the topology and working mode of the converter, so that the resonant circuit can work in bipolar mode, and designs the corresponding commutation timing and control algorithm based o...
According to the requirements of high robustness and positive and negative polarity controllability of the sampling circuit for bipolar charging power supply designed for a large capacity energy storage device, a positive and negative bipolar DC high...
It is important to reduce the jitter of gas switch under nanosecond pulse voltage for the output stability of electromagnetic pulse simulator. Especially under the condition that external triggering is inconvenient, the reduction of the jitter of sel...
The helium radiation damage of copper was simulated by using the molecular dynamics method, and the change process of copper microstructure under helium irradiation was observed on the atomic scale. The changes of the microstructure and mechanical pr...
The accident source term and radiological consequence evaluation of small heating reactor at site boundary is the key content of nuclear and radiation safety review. According to the design characteristics of the advanced small reactor, the accident ...
To solve the problem that multidimensional computing code needs huge computing resources when it simulates the lead-bismuth reactor for a long time, based on the self-developed one-dimensional CFD code, integrating the zero-dimensional point reactor ...
With the frequent appearance of UAVs in several recent local wars and armed conflicts, the study of UAV detection and tracking technology has become a research hotspot in imagery and other fields. Due to the characteristics of low altitude UAV target...
Utilizing the muzzle voltage of the electromagnetic railgun, the contact resistance between the sliding armature and the copper rail surface during the launch process can be calculated to analyze the contact characteristics. However, the muzzle volta...
