高压物理学报

Shock Temperature Measurement for Metals－Influences of a Gap Interface between the Driver Plate and the Metal Film Sample on the Shock Temperature Measurement by Using Radiometry

TAN Hua

1999, 13(3): 161-168 . doi: 10.11858/gywlxb.1999.03.001

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Abstract:
Radiometry is one of the most commonly used techniques in shock temperature measurement for metals. In this paper, we investigated the thermal relaxation history at the sample/window interface for a widely used four-layer target-sample configuration of the metal drive/gap/metal film/transparent wind...

Cubic Boron Nitride Crystal-Diamond Film Heterjunction p-n Diode

ZHANG Tie-Chen, GAO Chun-Xiao, WANG Cheng-Xin, JI Yan-Ju, ZOU Guang-Tian

1999, 13(3): 169-172 . doi: 10.11858/gywlxb.1999.03.002

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Abstract:
In this paper, B doped P type diamond film was grown on Si doped N type cubic boron nitride (cBN) flaky crystal by means of hot filament CVD method. A heterjunction p-n diode was fabricated. The electrical test shows that it has high rectification efficiency.

Effects of High Pressure and Thermal Treatments on Photoluminescence Efficiency of CNx Film

ZHAO Jing, CHE Rong-Zheng, XU Ji-Ren, KANG Ning, LIU Jing, YANG Yang

1999, 13(3): 173-177 . doi: 10.11858/gywlxb.1999.03.003

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Abstract:
Laser induced photoluminescence of carbon nitride films was measured under high pressures up to 24 GPa and after thermal treatment at different temperatures. The experimental results show that both effects of thermal treatment and high pressure induce the decrease of photoluminescence strength, but ...

Determination of the Critical Conditions of Ignition and Fast Reaction for Explosive Powder

HU Dong, WANG Yong-Guo, SUN Zhu-Mei

1999, 13(3): 178-183 . doi: 10.11858/gywlxb.1999.03.004

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Abstract:
The reaction degreed of TATB, RDX, TNT explosive powders under different excitation conditions were studied by means of temperature measurement, recovery and spectrum detecting techniques. Results show that both the critical ignition temperature and pressure for TATB explosive powder are high for TN...

Single Pulse Shock Tube Study on Decomposition and Incipient Detonation of the Trinitrotoluene

HE Yu-Zhong, CUI Ji-Zing

1999, 13(3): 184-186 . doi: 10.11858/gywlxb.1999.03.005

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Abstract:
Dilute quantities of o-nitrotoluene and anthranil have been pyrolyzed in comparative rate single pulse shock tube experiments. Rather a lot of CNO2 bond cleavages than NO2 isomerization are found as major channels in p-nitrotoluene decomposition. We demonstrate that the important pathway for pyrolys...

Two-Dimensional Numerical Simulation for the Inertial Effect of EMV Gauge Moving with Detonation Wave

ZHANG Zhen-Yu, WANG Zhi-Bing, HUANG Tie-Jun, LU Fang-Yun, HUAN Shi

1999, 13(3): 187-191 . doi: 10.11858/gywlxb.1999.03.006

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Abstract:
The inertial effect of EMV gauge, for measuring particle velocity of detonation wave, which is simulated by two dimensional nonlinear finite-element dynamic analyses, is presented in the paper.

Birch-Murnaghan Equation of State and High Pressure Compressibility of Halloysite

GONG Zi-Zheng, JING Fu-Qian, XIE Hong-Sen, TAN Hua

1999, 13(3): 192-198 . doi: 10.11858/gywlxb.1999.03.007

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Abstract:
K0S and K0S, the zero pressure adiabatic bulk modulus and its first pressure derivative of Birch-Murnaghan EOS (isentrope) for halloysite, are obtained in terms of shock Hugoniot data by using the Eulerian finite strain theory. Under the assumption =0.43(0/), for the low pressure phase K0S=32.16 GPa...

Underwater Explosion Wave by a Spherical Charge of Composition B-3

CHI Jia-Chun, MA Bing

1999, 13(3): 199-204 . doi: 10.11858/gywlxb.1999.03.008

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Abstract:
Peak pressures of underwater explosion wave by a spherical charge of composition B-3 are measured by using manganin gauge, PVDF gauge and tourmaline gauge over scaled distance of 1R/R0400, and the attenuation of the peak pressure is obtained. The explosion energy of composition B-3 is worked out fro...

Study on Simulation of Plasma in a Discharge Capillary

LIU Dong-Yao, ZHOU Yan-Huang, YU Yong-Gang

1999, 13(3): 205-210 . doi: 10.11858/gywlxb.1999.03.009

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Abstract:
An isothermal time-dependent zero dimension model of plasma in a discharge-capillary is developed in this paper. The variation of the resistance of metal wires, the ablation and ionization details of capillary materials and the non-ideal characters of the plasma are considered in this model. The dis...

The Experimental Technology for Shock-Compressed Liquid Gas

SHI Shang-Chun, DONG Shi, HUANG Yue

1999, 13(3): 211-217 . doi: 10.11858/gywlxb.1999.03.010

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Abstract:
The technology of shock-compression of liquid gas is reported in this paper. The liquid sample, which is refrigerated by liquid nitrogen, were shocked from initial states at 0.807 g/cm3 and 0.808 g/cm3 for CO and N2, respectively, to pressure range of 10～57 GPa using a two-stage light-gas gun. The s...

Influence of the Inclination of the Fiber End Surface in Calibration of Coupling Energy of a Pyrometer

HU Jin-Biao

1999, 13(3): 218-225 . doi: 10.11858/gywlxb.1999.03.011

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Abstract:
The influence of inclination of the fiber end surface to coupling energy of a pyrometer and variation of the accepting angle of the fiber caused by the inclination is calculated. Results show that the inclination of the fiber end surface influences the coupling energy very much. At the same time, th...

A New Route for the Synthesis of MoN

ZHAO Xu-Dong, RANGE K J, WU Xiang

1999, 13(3): 226-229 . doi: 10.11858/gywlxb.1999.03.012

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Abstract:
The Molybdenum nitride was synthesized by the reduction of Molybdenum dioxide with ammonium chloride under extreme conditions of high pressure and high temperature. The product was examined with XRD measurement. The results show that the MoN has the hexagonal symmetry with lattice constants of a=0.5...

Experimental Studies on the Nano-Crystallizations of Amorphous Fe78B13Si9 and FeMoBSi Alloy under Shock Wave

LIU Ying-Kai, ZHOU Xiao-Feng, LIU Zuo-Quan, HOU De-Dong

1999, 13(3): 230-236 . doi: 10.11858/gywlxb.1999.03.013

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Abstract:
The shock wave-crystallizations of amorphous Fe78B13Si9 and (Fe0.99Mo0.01)78B13Si9 alloys are studied. The shock wave was produced in a H2 and O2 explosive shock wave tube. The experimental results suggest that the nano-crystallization of metallic glasses Fe78B13Si9 and (Fe0.99Mo0.01)78B13Si9 could ...

H-Derivative of the Function Defined on Fractal Set

DONG Xiao-Dan, JI Hui, CHEN Yong-Shun, JIANG Yi-He, LI Rui, WU Yu-Xia, LI Wei

1999, 13(3): 237-240 . doi: 10.11858/gywlxb.1999.03.014

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Abstract:
In this paper, H-derivative of the function defined on fractal set is given as follows f(1)HE(S0)=limS0 |f(S0)/2S|D1D2～|fE(S)|D1D2 and the evolution equation of fractal dynamics is proved.

1999 Vol. 13, No. 3

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