高压物理学报

The Structure Assembly of High Tc Superconductor

JIN Chang-Qing

2003, 17(3): 161-168 . doi: 10.11858/gywlxb.2003.03.001

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Abstract:
A new structure assembly method is proposed to describe the high Tc superconductor materials. Using this method, the main crystalline structures of the high Tc superconductors were derived in the language of infinite layer in Cu-O perovskite. Furthermore, a three digit nomenclature has been adopted ...

Spectroscopic Studies of Epoxypropane Ignition

HU Dong, YUAN Chang-Ying, LI Ping, CHENG Xin-Lu, LIU Jin-Chao, SUN Zhu-Mei

2003, 17(3): 169-172 . doi: 10.11858/gywlxb.2003.03.002

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Abstract:
A new spectroscopic technique is introduced to measure the delay time of the shock ignition of epoxypropane. Intermediate product of the most early emergence for the loaded fuel is determined at first using spectrometer, because the intermediate product of O for epoxypropane after shock ignition is ...

Study of Equation of State of the Dense Fluid He+H2 Mixtures

CHEN Qi-Feng, CAI Ling-Cang, CHEN Dong-Quan, JING Fu-Qian, ZHAO Xian-Geng

2003, 17(3): 173-179 . doi: 10.11858/gywlxb.2003.03.003

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Abstract:
The mixing rule and the variational perturbation theory together with van der Waals one-fluid model have been used to study the equation of state of the dense fluid He+H2 mixtures with different H2∶He compositions in this work. The first-order quantum correction is included. To test the model and co...

A Comparative Study of the Evolution of R-T Instability in Two and Three Dimensions

XU Li, SUN Jin-Shan

2003, 17(3): 180-186 . doi: 10.11858/gywlxb.2003.03.004

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Abstract:
Rayleigh-Taylor (R-T) instability at the interface of two different fluids is studied analytically by using perturbation method. We analyze and compare the linear and nonlinear growth of R-T instability in two (2D) and three (3D) dimensions. The obtained conclusion includes, (1) linear growth of the...

Synthesis and Characterization of KNb1-xTixO3- Solid Solutions

XIANG Jun, LI Li-Ping

2003, 17(3): 187-192 . doi: 10.11858/gywlxb.2003.03.005

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Abstract:
KNb1-xTixO3- (x=0～0.40) solid solutions were synthesized under high temperature and high pressure for the first time. The structural characteristics and ionic conductivity of KNb1-xTixO3- solid solutions were investigated by XRD, TG-DTA, Raman and impedance spectroscopy techniques. XRD results showe...

Experimental Studies on the Multi-Point Initiation of the Insensitive Explosive JB9014

WEN Shang-Gang, ZHAO Feng, SUN Cheng-Wei

2003, 17(3): 193-198 . doi: 10.11858/gywlxb.2003.03.006

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Abstract:
By means of SVR electrical camera and streak camera, the waveform of detonation wave front on the bottom of insensitive explosive JB9014 are recorded in multi-point initiation experiments, and the experimental results are analyzed.

The Determination of Melting-Point and Debye Characteristic Temperature of Nano-Diamond from X-Ray Diffraction Intensities

WEN Chao, SUN De-Yu, GUAN Jin-Qing, LIU Xiao-Xin, LI Xun, ZHOU Gang, LIN Jun-De, JIN Zhi-Hao

2003, 17(3): 199-203 . doi: 10.11858/gywlxb.2003.03.007

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Abstract:
The melting-point of nano-diamond was reported in this paper. The Debye characteristic temperature of nano-diamond was calculated based on X-ray diffraction intensities by the methods introduced by LU Xue-Shan and LIANG Jing-Kui. Its Debye characteristic temperature is 411.7 K, which is about one-fi...

Experimental Investigation of Shaped Charge with Large Cone Angle

TAN Duo-Wang, SUN Cheng-Wei, ZHAO Ji-Bo, ZHANG Ke-Ming, XIE Pan-Hai

2003, 17(3): 204-208 . doi: 10.11858/gywlxb.2003.03.008

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Abstract:
By means of X-ray flash radiographs, the jet formation and penetration of two types of shaped charge with large cone angle were investigated, and compared with that of the jet of shaped charge with small cone angle (42). The experimental results show that (1) the jet of shaped charge with large cone...

Shock-Activating and Sintering of Hydroxyapatite Agglomerate

LIAO Qi-Long, YANG Shi-Yuan, CAI Ling-Cang, ZHENG Chang-Qiong

2003, 17(3): 209-213 . doi: 10.11858/gywlxb.2003.03.009

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Abstract:
Hydroxyapatite (HA) is an effective material used in bone prostheses. The activating and sintering characteristics of hydroxyapatite agglomerate treated by shock wave were studied. Using XRD and SEM the grain size refinement, homogenization and lattice deformation were observed in shocked HA powders...

Comments on the Unjustification of CJ and ZND Model in Detonation

HU Shao-Ming, LI Chen-Fang

2003, 17(3): 214-219 . doi: 10.11858/gywlxb.2003.03.010

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Abstract:
The essential change caused by sudden heat energy release in a detonation process is not fully considered by the CJ and ZND model. In these classical detonation theories, the entropy at the final detonation point is the lowest one among all possible states, and the probability is the lowest. The fin...

Two Approximate Models for Describing Solid-Liquid Phase Transition of Mixtures

RAN Xian-Wen, TANG Wen-Hui

2003, 17(3): 220-225 . doi: 10.11858/gywlxb.2003.03.011

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Abstract:
Two models, Mixing phase model and Equivalent material model, were developed based on a mixing principle. By applying them to 304 steel, the pressure-temperature curve was calculated. It was shown that the calculated curve was in agreement with that calculated directly using material parameters of 3...

Research on Raman Spectra of Calcite at Pressure of 0.1~800 MPa

ZHAO Jin, ZHENG Hai-Fei

2003, 17(3): 226-229 . doi: 10.11858/gywlxb.2003.03.012

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Abstract:
This paper investigates the reliability of calcite as a pressure gauge for the hydrothermal diamond anvil cell (HDAC) by the experiment at the pressure of 0.1~800 MPa and the temperature of 26 ℃, and defines the relation between the pressure and the Raman peak position of calcite in ambient temperat...

Function Realation between Nuclear Exploding Yield and Dilating Velocity of Mushroom Cloud

JIN Liang-An, WANG Xiao-Tong, ZHANG Ming-Hu, YANG Chang-Qing

2003, 17(3): 230-234 . doi: 10.11858/gywlxb.2003.03.013

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Abstract:
The lots of data of mushroom cloud width were analyzed by numerical method. The new concept, dilating velocity of mushroom cloud of nuclear exploding, was put forward. The function relation between the dilating velocity and the nuclear exploding yield was set up. The new detecting method based on th...

Configurational Design for Centralized Control System of Hexa-Orientation Press

SUN Yue, BI Yan, DONG Yue, LUO Xiang-Jie, DING Li-Ye, YANG Xiang-Dong

2003, 17(3): 235-240 . doi: 10.11858/gywlxb.2003.03.014

PDF (779)

Abstract:
The control system of a hexa-orientation press is consisted of measurement and control units for high pressure and high temperature. By applying the configuration software, the precision of tracking control and temperature and pressure maintainenance have reached or exceeded original projects under ...

2003 Vol. 17, No. 3

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