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RSS2015 Vol. 27, No. 03
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2015,
27: 032001.
doi: 10.11884/HPLPB201527.032001
Abstract:
In the scheme of electron-driven fast ignition of inertial confinement fusion (ICF), MeV relativistic electron beams driven by ultraintense petawatt laser pulses are required and electron energy of several tens of kilojoules should be deposited in th...
In the scheme of electron-driven fast ignition of inertial confinement fusion (ICF), MeV relativistic electron beams driven by ultraintense petawatt laser pulses are required and electron energy of several tens of kilojoules should be deposited in th...
2015,
27: 032002.
doi: 10.11884/HPLPB201527.032002
Abstract:
High Mach number compressible turbulent flow is a multi-process physical phenomenon with multi-scale properties. To explore its physical mechanism, the motion compressible turbulence is divided into shear and dilation processes, and the effect of dil...
High Mach number compressible turbulent flow is a multi-process physical phenomenon with multi-scale properties. To explore its physical mechanism, the motion compressible turbulence is divided into shear and dilation processes, and the effect of dil...
2015,
27: 032003.
doi: 10.11884/HPLPB201527.032003
Abstract:
Wigner distribution function method includes diffractive effects into the conventional ray tracing model of laser beams. However, there are some difficulties when using this method in hydra-dynamics codes. Wigner distribution function method needs a ...
Wigner distribution function method includes diffractive effects into the conventional ray tracing model of laser beams. However, there are some difficulties when using this method in hydra-dynamics codes. Wigner distribution function method needs a ...
2015,
27: 032004.
doi: 10.11884/HPLPB201527.032004
Abstract:
This paper presents our study of stimulated backward Raman scattering (SRS) and stimulated backward Brillouin scattering (SBS) instabilities, which appeared when the pump laser passed through the hohlraum plasma in the indirect driven inertial confin...
This paper presents our study of stimulated backward Raman scattering (SRS) and stimulated backward Brillouin scattering (SBS) instabilities, which appeared when the pump laser passed through the hohlraum plasma in the indirect driven inertial confin...
2015,
27: 032005.
doi: 10.11884/HPLPB201527.032005
Abstract:
In this article, the compressing and forming mechanism of hot spot in the implosion of shock ignition is analyzed using the method of simulation. Firstly, the implosion of conventional central ignition is discussed. The hot spot experiences shock com...
In this article, the compressing and forming mechanism of hot spot in the implosion of shock ignition is analyzed using the method of simulation. Firstly, the implosion of conventional central ignition is discussed. The hot spot experiences shock com...
2015,
27: 032006.
doi: 10.11884/HPLPB201527.032006
Abstract:
Due to the fuel surrounded by a high-Z pusher, the double-shell target differs from the cryogenic single-shell case, and it requires volume ignition of the whole fuel. In the paper, the ignition condition for the fuel surrounded by a high-Z pusher is...
Due to the fuel surrounded by a high-Z pusher, the double-shell target differs from the cryogenic single-shell case, and it requires volume ignition of the whole fuel. In the paper, the ignition condition for the fuel surrounded by a high-Z pusher is...
2015,
27: 032007.
doi: 10.11884/HPLPB201527.032007
Abstract:
This paper introduces the radiation-hydrodynamic code LARED-Integration, including its physical background, model equations, numerical algorithms and numerical results. The code is developed by Institute of Applied Physics and Computational Mathemati...
This paper introduces the radiation-hydrodynamic code LARED-Integration, including its physical background, model equations, numerical algorithms and numerical results. The code is developed by Institute of Applied Physics and Computational Mathemati...
2015,
27: 032008.
doi: 10.11884/HPLPB201527.032008
Abstract:
Using quantum molecular dynamic simulations, we studied the molecular dissociation and the equations of states of hydrogen and its isotopes under extreme conditions, and provided fitting parameters. By introducing the first order quantum corrections ...
Using quantum molecular dynamic simulations, we studied the molecular dissociation and the equations of states of hydrogen and its isotopes under extreme conditions, and provided fitting parameters. By introducing the first order quantum corrections ...
2015,
27: 032009.
doi: 10.11884/HPLPB201527.032009
Abstract:
A series of ARTI experiments have been performed in Shenguang Ⅱ(SGⅡ) laser facility of China. The simulation results from the LARED-S code for the planar foil trajectory experiment indicate that the energy flux at the hohlraum wall is obviously less ...
A series of ARTI experiments have been performed in Shenguang Ⅱ(SGⅡ) laser facility of China. The simulation results from the LARED-S code for the planar foil trajectory experiment indicate that the energy flux at the hohlraum wall is obviously less ...
2015,
27: 032010.
doi: 10.11884/HPLPB201527.032010
Abstract:
Energy deposition of ultra-intense laser driven fast electrons into the highly compressed fuel core plasmas is of great importance in assessing the overall coupling efficiency in fast ignition scheme. In this paper, a relativistic kinetic model is es...
Energy deposition of ultra-intense laser driven fast electrons into the highly compressed fuel core plasmas is of great importance in assessing the overall coupling efficiency in fast ignition scheme. In this paper, a relativistic kinetic model is es...
2015,
27: 032011.
doi: 10.11884/HPLPB201527.032011
Abstract:
Hohlraum radiation flux is the source of the capsule implosion in the indirect drive fusion, which strongly affects the capsule compression properties. It is very important to study the angular distribution of the hohlraum radiation temperature in or...
Hohlraum radiation flux is the source of the capsule implosion in the indirect drive fusion, which strongly affects the capsule compression properties. It is very important to study the angular distribution of the hohlraum radiation temperature in or...
2015,
27: 032012.
doi: 10.11884/HPLPB201527.032012
Abstract:
Laser and plasma interaction (LPI) and Rayleigh-Taylor instability (RTI) are two main ingredients affecting the success of ignition. The gas fill near the Au wall along the inner laser cone is the main region where SRS instabilities occur. At this re...
Laser and plasma interaction (LPI) and Rayleigh-Taylor instability (RTI) are two main ingredients affecting the success of ignition. The gas fill near the Au wall along the inner laser cone is the main region where SRS instabilities occur. At this re...
2015,
27: 032013.
doi: 10.11884/HPLPB201527.032013
Abstract:
In the field of indirect-drive inertial-confinement-fusion, to acquire high spatial resolution X-ray radiation images is the foundation for hydrodynamic instabilities and imploded process researches. Kirkpatrick-Baez (KB) microscope, which is based o...
In the field of indirect-drive inertial-confinement-fusion, to acquire high spatial resolution X-ray radiation images is the foundation for hydrodynamic instabilities and imploded process researches. Kirkpatrick-Baez (KB) microscope, which is based o...
2015,
27: 032014.
doi: 10.11884/HPLPB201527.032014
Abstract:
Hohlraum physics is fundamental to the indirect drive inertial fusion. The ultimate goal of laser-driven hohlraum is to create a radiation environment that ablatively implodes a capsule to ignite and burn. To obtain high fusion yield with minimum las...
Hohlraum physics is fundamental to the indirect drive inertial fusion. The ultimate goal of laser-driven hohlraum is to create a radiation environment that ablatively implodes a capsule to ignite and burn. To obtain high fusion yield with minimum las...
2015,
27: 032015.
doi: 10.11884/HPLPB201527.032015
Abstract:
In the research of laser indirect-drive inertial confinement fusion, the capsule is imploded symmetrically using radiative ablation. Then, the implosion kinetic energy is converted into the hotspot thermal energy in the deceleration phase so as to ac...
In the research of laser indirect-drive inertial confinement fusion, the capsule is imploded symmetrically using radiative ablation. Then, the implosion kinetic energy is converted into the hotspot thermal energy in the deceleration phase so as to ac...
2015,
27: 032016.
doi: 10.11884/HPLPB201527.032016
Abstract:
In laser indirect-driven inertial-confinement-fusion (ICF), the capsules with multi-layered structure are subjected to hydrodynamic instabilities. Rayleigh-Taylor instability growth at the ablation front and the interface between the DT ice and centr...
In laser indirect-driven inertial-confinement-fusion (ICF), the capsules with multi-layered structure are subjected to hydrodynamic instabilities. Rayleigh-Taylor instability growth at the ablation front and the interface between the DT ice and centr...
2015,
27: 032017.
doi: 10.11884/HPLPB201527.032017
Abstract:
Compared with central ignition of laser fusion, fast ignition separates compression and ignition thus it can relax the requirements for the implosion symmetry and the driven energy. Indirect drive pre-compression of cone-in-shell target for fast igni...
Compared with central ignition of laser fusion, fast ignition separates compression and ignition thus it can relax the requirements for the implosion symmetry and the driven energy. Indirect drive pre-compression of cone-in-shell target for fast igni...
2015,
27: 032018.
doi: 10.11884/HPLPB201527.032018
Abstract:
By comparing and analyzing various frequency conversion schemes, a compatible harmonic generation system has been designed. With type-Ⅱ-type-Ⅱ crystal combination configuration, polarization mismatch third harmonic generation and type-Ⅱ orthogonal qu...
By comparing and analyzing various frequency conversion schemes, a compatible harmonic generation system has been designed. With type-Ⅱ-type-Ⅱ crystal combination configuration, polarization mismatch third harmonic generation and type-Ⅱ orthogonal qu...
2015,
27: 032019.
doi: 10.11884/HPLPB201527.032019
Abstract:
In Thomson scattering experiment on SG-Ⅱ laser facility, X-ray radiation produced by laser interaction with Au hohlraum was used to heat the Fe/Al sample. The scattering spectra of the probe laser beam were measured at 90. The self-emission from the ...
In Thomson scattering experiment on SG-Ⅱ laser facility, X-ray radiation produced by laser interaction with Au hohlraum was used to heat the Fe/Al sample. The scattering spectra of the probe laser beam were measured at 90. The self-emission from the ...
2015,
27: 032020.
doi: 10.11884/HPLPB201527.032020
Abstract:
With the safety requirements of detectors in the gas hohlraum experiments, a technique of pulsed bias application on X-ray diodes is studied preliminarily. A new synchronization method is presented based on the signal generator and the 8 ps laser equ...
With the safety requirements of detectors in the gas hohlraum experiments, a technique of pulsed bias application on X-ray diodes is studied preliminarily. A new synchronization method is presented based on the signal generator and the 8 ps laser equ...
2015,
27: 032021.
doi: 10.11884/HPLPB201527.032021
Abstract:
The titanium hohlraum as a bright X-ray source was explored on the Shenguang-Ⅲ prototype laser facility. It shows that the multi-keV X-rays are mainly generated near the cylinder axis. The multi-keV X-ray emission region and the duration increase wit...
The titanium hohlraum as a bright X-ray source was explored on the Shenguang-Ⅲ prototype laser facility. It shows that the multi-keV X-rays are mainly generated near the cylinder axis. The multi-keV X-ray emission region and the duration increase wit...
2015,
27: 032022.
doi: 10.11884/HPLPB201527.032022
Abstract:
This paper mainly introduced some researches about calibration of scintillatorssensitivity using standard radio -active sources 241Am, 133Ba and 152Eu in Beijing Institute of Atomic Physics. As a scintillator could be used for single photon counting,...
This paper mainly introduced some researches about calibration of scintillatorssensitivity using standard radio -active sources 241Am, 133Ba and 152Eu in Beijing Institute of Atomic Physics. As a scintillator could be used for single photon counting,...
2015,
27: 032023.
doi: 10.11884/HPLPB201527.032023
Abstract:
Gold foam is one of the most important materials used in ICF experimental research, while it is hard to precisely measure the volume of the gold foam in its density characterization. Here we reported one method of volume reconstruction by using X ray...
Gold foam is one of the most important materials used in ICF experimental research, while it is hard to precisely measure the volume of the gold foam in its density characterization. Here we reported one method of volume reconstruction by using X ray...
2015,
27: 032024.
doi: 10.11884/HPLPB201527.032024
Abstract:
The main point of inertial-confinement-fusion (ICF) lies on the concept that via capsule-based implosion fuel inside capsules can be pressured to high temperature, high density plasma to approach ignition. Capsules, taken as fuel containers and being...
The main point of inertial-confinement-fusion (ICF) lies on the concept that via capsule-based implosion fuel inside capsules can be pressured to high temperature, high density plasma to approach ignition. Capsules, taken as fuel containers and being...
2015,
27: 032025.
doi: 10.11884/HPLPB201527.032025
Abstract:
The spatial distribution of deuterium (D2) or deuterium-tritium (DT) ice condensed inside the inertial confinement fusion (ICF) spherical cryogenic target is determined by the temperature field around the target. In the deuterium cryogenic target, th...
The spatial distribution of deuterium (D2) or deuterium-tritium (DT) ice condensed inside the inertial confinement fusion (ICF) spherical cryogenic target is determined by the temperature field around the target. In the deuterium cryogenic target, th...
2015,
27: 032026.
doi: 10.11884/HPLPB201527.032026
Abstract:
Low-density high-Z oxide aerogels are easy to shrink or crack due to the formation of the end group of metal-oxygen double bond in their precursors solution. Rare-earth oxide aerogels were prepared via coordination environment adjustment and disperse...
Low-density high-Z oxide aerogels are easy to shrink or crack due to the formation of the end group of metal-oxygen double bond in their precursors solution. Rare-earth oxide aerogels were prepared via coordination environment adjustment and disperse...
2015,
27: 032027.
doi: 10.11884/HPLPB201527.032027
Abstract:
Using low pressure plasma polymerization technology, glowing discharge polymer films were fabricated at different coating pressures. Surface roughness, chemistry structure and optical properties were measured by atomic force microscopy, infrared abso...
Using low pressure plasma polymerization technology, glowing discharge polymer films were fabricated at different coating pressures. Surface roughness, chemistry structure and optical properties were measured by atomic force microscopy, infrared abso...
2015,
27: 032028.
doi: 10.11884/HPLPB201527.032028
Abstract:
Taking advantage of low pressure plasma chemical vapor deposition technology, the hydrocarbon glow discharge polymer (GDP) and deuterated glow discharge polymer (D-GDP) films were fabricated by glow discharge polymerization technology. The deposition...
Taking advantage of low pressure plasma chemical vapor deposition technology, the hydrocarbon glow discharge polymer (GDP) and deuterated glow discharge polymer (D-GDP) films were fabricated by glow discharge polymerization technology. The deposition...
2015,
27: 032029.
doi: 10.11884/HPLPB201527.032029
Abstract:
Via measuring results of phase compatibility and interference effects between polystyrene (PS) and polyvinyl benzyl chloride (PVBCl), the influence on the phase separation status of the two substances in the cured film and shell from solution mixed w...
Via measuring results of phase compatibility and interference effects between polystyrene (PS) and polyvinyl benzyl chloride (PVBCl), the influence on the phase separation status of the two substances in the cured film and shell from solution mixed w...
2015,
27: 032030.
doi: 10.11884/HPLPB201527.032030
Abstract:
To research the effect of molecular weight on the solidification rates of the emulsion particles in the microencapsulation process of poly (-methyl styrene) (PAMS) hollow shells, three different kinds of PAMS with molecular weights 300, 440 and 800 k...
To research the effect of molecular weight on the solidification rates of the emulsion particles in the microencapsulation process of poly (-methyl styrene) (PAMS) hollow shells, three different kinds of PAMS with molecular weights 300, 440 and 800 k...
2015,
27: 032031.
doi: 10.11884/HPLPB201527.032031
Abstract:
A device is designed to deposit metals on double-shell targets. The plating mechanism is described in detail, as well as structure and function. The special structure of the tank make the growing speed of upper surface faster than that of the lower. ...
A device is designed to deposit metals on double-shell targets. The plating mechanism is described in detail, as well as structure and function. The special structure of the tank make the growing speed of upper surface faster than that of the lower. ...
2015,
27: 032032.
doi: 10.11884/HPLPB201527.032032
Abstract:
A new structure for the fast ignition target was presented, setting a flat tip in the front cone to avoid plasma escaping, and a micro-nanometer dot on centre of flat tip to emit thermal electron. The limited condition of Alfvn principle might arise ...
A new structure for the fast ignition target was presented, setting a flat tip in the front cone to avoid plasma escaping, and a micro-nanometer dot on centre of flat tip to emit thermal electron. The limited condition of Alfvn principle might arise ...
2015,
27: 032033.
doi: 10.11884/HPLPB201527.032033
Abstract:
To obtain the cleaning methods in high power laser system, the beampath cleanliness experiments and the effects of laser induced damage owing to contamination are studied. The numbers and components of the aerosols are analyzed using the commercial p...
To obtain the cleaning methods in high power laser system, the beampath cleanliness experiments and the effects of laser induced damage owing to contamination are studied. The numbers and components of the aerosols are analyzed using the commercial p...
2015,
27: 032034.
doi: 10.11884/HPLPB201527.032034
Abstract:
Two different laser conditioning methods including n% raster scanning and R-on-1 test were conducted to investigate the conditioning effect of 532 nm high reflectors. The Nd: YAG second harmonic laser was employed to do 1-on-1 test for 532 nm high re...
Two different laser conditioning methods including n% raster scanning and R-on-1 test were conducted to investigate the conditioning effect of 532 nm high reflectors. The Nd: YAG second harmonic laser was employed to do 1-on-1 test for 532 nm high re...
2015,
27: 032035.
doi: 10.11884/HPLPB201527.032035
Abstract:
High speed plasma jets are generated by ablating half-cylinder-shell targets with two laser bunches on Shenguang Ⅱ Laser Facility. Using optical and X-ray diagnostics, the parameters of the plasma jets have been measured. Propagating in vacuum, the j...
High speed plasma jets are generated by ablating half-cylinder-shell targets with two laser bunches on Shenguang Ⅱ Laser Facility. Using optical and X-ray diagnostics, the parameters of the plasma jets have been measured. Propagating in vacuum, the j...
2015,
27: 032036.
doi: 10.11884/HPLPB201527.032036
Abstract:
In order to overcome the space charge influence over the transport of the high-current particle beams in laser acceleration, we propose a new scheme to realize the acceleration of a neutral plasma block. It is carried out by injecting an ultraintense...
In order to overcome the space charge influence over the transport of the high-current particle beams in laser acceleration, we propose a new scheme to realize the acceleration of a neutral plasma block. It is carried out by injecting an ultraintense...
2015,
27: 032037.
doi: 10.11884/HPLPB201527.032037
Abstract:
The main active particles produced by excitation of dielectric barrier discharge plasma on air were analyzed with emission spectrometry, the evolution rules of the active particles were simulated with plasma kinetic model, and the chemical kinetics m...
The main active particles produced by excitation of dielectric barrier discharge plasma on air were analyzed with emission spectrometry, the evolution rules of the active particles were simulated with plasma kinetic model, and the chemical kinetics m...
2015,
27: 032038.
doi: 10.11884/HPLPB201527.032038
Abstract:
There is an important application for laser-driven plasma wakefield in electrons acceleration field. The idea of capillary plasma improving the effect of electron acceleration is put forward. Based on an analytical model of laser plasma wake, the int...
There is an important application for laser-driven plasma wakefield in electrons acceleration field. The idea of capillary plasma improving the effect of electron acceleration is put forward. Based on an analytical model of laser plasma wake, the int...
2015,
27: 032039.
doi: 10.11884/HPLPB201527.032039
Abstract:
In order to obtain focal spot size and spatial resolution of X-ray driven by the ultra-intense laser, a new method was designed to diagnose with a 0.2-m-thick knife-edge attached two different meshes, one copper mesh of 400 meshes and another nickel ...
In order to obtain focal spot size and spatial resolution of X-ray driven by the ultra-intense laser, a new method was designed to diagnose with a 0.2-m-thick knife-edge attached two different meshes, one copper mesh of 400 meshes and another nickel ...
2015,
27: 032040.
doi: 10.11884/HPLPB201527.032040
Abstract:
According to the characteristics of and application requirements for pulsed plasma, a time of flight mass spectrometry diagnosis system for pulsed plasma has been developed using orthogonal-injection, grid reflecting and two-stage space focusing meth...
According to the characteristics of and application requirements for pulsed plasma, a time of flight mass spectrometry diagnosis system for pulsed plasma has been developed using orthogonal-injection, grid reflecting and two-stage space focusing meth...
2015,
27: 032041.
doi: 10.11884/HPLPB201527.032041
Abstract:
In order to study the transmission of electromagnetic waves in the non-uniform plasma sheath, the Z Finite-Difference Time-Domain（Z-FDTD） numerical method is combined with experiments. Electromagnetic waves transmission characteristics experiments ar...
In order to study the transmission of electromagnetic waves in the non-uniform plasma sheath, the Z Finite-Difference Time-Domain（Z-FDTD） numerical method is combined with experiments. Electromagnetic waves transmission characteristics experiments ar...
