A study on the comprehension of differences in specific kinetic energy of TKX-50 and HMX from the perspective of gas products

2019 ◽  
Vol 21 (12) ◽  
pp. 6600-6605 ◽  
Author(s):  
Chuande Zhao ◽  
Yu Chi ◽  
Qiang Peng ◽  
Fang Yang ◽  
Jianhua Zhou ◽  
...  
Keyword(s):  
Kinetic Energy ◽  
Energetic Material ◽  
High Energy ◽  
Gas Products ◽  
Specific Kinetic Energy

5,5′-Bitetrazole-1,1′-dioxydihydroxylamine salt (TKX-50), a high-energy energetic material, possesses good safety and energy properties.

Sputtering of silicon by atomic and cluster bismuth ions: An influence of projectile nuclearity and specific kinetic energy on the sputter yield

Vacuum ◽  
2021 ◽  
Vol 188 ◽  
pp. 110188
Author(s):  
A. Tolstogouzov ◽  
P. Mazarov ◽  
A.E. Ieshkin ◽  
S.F. Belykh ◽  
N.G. Korobeishchikov ◽  
...  
Keyword(s):  
Kinetic Energy ◽  
Specific Kinetic Energy ◽  
Sputter Yield

scholarly journals Study of High-Energy Fission in Inverse Kinematics

2019 ◽  
Vol 223 ◽  
pp. 01037
Author(s):  
G. Mantovani ◽  
D. Ramos ◽  
M. Caamaño ◽  
A. Lemasson ◽  
M. Rejmund ◽  
...  
Keyword(s):  
Kinetic Energy ◽  
Excitation Energy ◽  
Shell Structure ◽  
Inverse Kinematics ◽  
High Energy ◽  
Total Kinetic Energy ◽  
High Excitation Energy ◽  
High Excitation ◽  
Shell Effects

Fission at low excitation energy, is a process in which both macroscopic and microscopic aspects are involved. Some features in the total kinetic energy and in the N/Z distributions of the fragments, commonly associated with shell effects, came out in a series of recent experiments with high excitation energy fusionfission reactions in inverse kinematics. In the latest experiment of this campaign, a study of high-energy fission and quasi-fission between a 238U beam and a series of light targets was carried out by using the aforementioned technique, in order to probe the role of the shell structure in these processes.

scholarly journals Optimization of the specific kinetic energy of the pre-grooved stun grenade fragments based on HyperMesh, LS-DYNA and Matlab

2020 ◽  
Vol 1507 ◽  
pp. 032019
Author(s):  
Xing-yu Liu ◽  
Zhan Ren-jun ◽  
Li Yong-li
Keyword(s):  
Kinetic Energy ◽  
Specific Kinetic Energy

Specific kinetic energy concept for regular waves

2006 ◽  
Vol 33 (10) ◽  
pp. 1283-1298 ◽  
Author(s):  
Francisco Taveira Pinto ◽  
Raquel Silva
Keyword(s):  
Kinetic Energy ◽  
Regular Waves ◽  
Energy Concept ◽  
Specific Kinetic Energy

scholarly journals The annihilation of fast positrons by electrons in the K-shell

1934 ◽  
Vol 146 (859) ◽  
pp. 723-736 ◽  
Keyword(s):  
Kinetic Energy ◽  
Cosmic Radiation ◽  
Nuclear Charge ◽  
Structure Constant ◽  
Photoelectric Effect ◽  
High Energy ◽  
Negative Energy ◽  
Fine Structure Constant ◽  
Quantum Process ◽  
High Energies

The probability of the simultaneous of a positron and an electron, with the emission of two quanta of radiation, has been calculated by Dirac and several other authors. From considerations of energy and momentum it follows that an electron and positron can only annihilate one another with the emission of one quantum of radiation in the presence of a third body. An electron bound in an atom could, therefore, annihilate a positron, represented by a hole on the Dirac theory, by jumping into a state of negative energy which happens to be free, the nucleus taking up the extra momentum. The process is now mathematically analogous to the photoelectric transitions to states of negative energy in the sense that the matrix elements concerned are the same, and we might expect that the effect would be most important for the electrons in the K-shell. Fermi and Uhlenbeck have calculated the process approximately, for the condition where the kinetic energy of the positron is of the order of magnitude of the ionization energy of the K-shell. The result they obtained was very small compared with the two quantum process, which is to be explained by the fact that for these small energies, the positron does not get near the nucleus. In view of the fact that positrons of energies of the order 100 mc 2 occur in considerable quantities in the showers produced by cosmic radiation, and that the primary cosmic radiation itself may consist, in part, of positrons, it becomes of interest to calculate the cross-section for the annihilation of positrons of high energy by electrons in the K-shell, and their absorption in matter, and also to compare this process with the two quantum process for high energies. In the photoelectric effect for hard γ -rays, the electron the electron leaves the atom in states of different angular momentum (described by the azimuthal quantum number l ), and the terms which give the largest contribution are roughly those for which l is of the order of the energy of the γ -ray in terms of mc 2 . For high energies, therefore, a calculation by the method of Hulme, in which the last step is carried out numerically, is out of the question, and we must find some approximate method of effecting a summation. We shall use an adaptation of Sauter's method, in which we shall treat as small the product of the fine structure constant and the nuclear charge. This method may be expected to give a good approximation for small nuclear charge. Our method has the further restriction that it is valid only when the kinetic energy of the positron is not small compared with mc 2 .

A new method for the determination of the specific kinetic energy (SKE) released to pyroclastic particles at magmatic fragmentation: theory and first experimental results

2011 ◽  
Vol 74 (4) ◽  
pp. 895-902 ◽  
Author(s):  
Tobias Dürig ◽  
Fabio Dioguardi ◽  
Ralf Büttner ◽  
Pierfrancesco Dellino ◽  
Daniela Mele ◽  
...  
Keyword(s):  
Kinetic Energy ◽  
Experimental Results ◽  
New Method ◽  
Specific Kinetic Energy

Deformation of cube-textured aluminum studied using laser-induced photoelectron emission

2007 ◽  
Vol 22 (9) ◽  
pp. 2582-2589 ◽  
Author(s):  
M. Cai ◽  
S.C. Langford ◽  
J.T. Dickinson ◽  
L.E. Levine
Keyword(s):  
Kinetic Energy ◽  
Energy Distribution ◽  
Tensile Deformation ◽  
High Energy ◽  
Field Energy ◽  
Electron Backscattered Diffraction ◽  
Grain Rotation ◽  
High Energy Electrons ◽  
Low Energy Electrons ◽  
Major Surface

The evolution of the kinetic energy distribution of photoelectrons from a cube-oriented aluminum sample during tensile deformation was probed with a retarding field energy analyzer. Because of the anisotropy of the aluminum work function, the electron-energy distribution is altered as the area fractions of the major surface planes change during deformation. In cube-textured aluminum, deformation reduces the {100} area fraction and the relatively low energy electrons from these surfaces. Conversely, the {110} and {111} area fractions and the relatively high energy electrons from these surfaces both increase. These changes are quantitatively consistent with texture analysis by electron backscattered diffraction (EBSD). They reflect deformation-induced production of {111} surfaces by slip and the exposure of {110} surfaces by grain rotation. Photoelectron kinetic energy measurements supplement EBSD measurements and are readily acquired in real-time.

Research on the Structure Integrity Analysis of Flywheel of Reactor Coolant Pump in Nuclear Power Plant

2017 ◽  
Author(s):  
Jian Zhang ◽  
Yongde Zuo ◽  
Xingjiang Chen ◽  
Qinghong Zhang
Keyword(s):  
Kinetic Energy ◽  
Failure Analysis ◽  
Stress Analysis ◽  
Ductile Failure ◽  
High Energy ◽  
Theory Of Elasticity ◽  
The Other ◽  
Coolant Pump ◽  
Reactor Coolant ◽  
Pump Rotor

The flywheels on reactor coolant pump motors provide inertia to ensure a slow decrease in coolant flow in order to prevent fuel damage as a result of a loss of power to the pump motors. During operation at normal speed, a flywheel has sufficient kinetic energy to produce high-energy missiles and excessive vibration of the reactor coolant pump assembly if the flywheel failed. Overspeed of the pump rotor assembly during a transient increases both the potential for failure and the kinetic energy of the flywheel. The safety consequences could be significant because of possible damage to the reactor coolant system, the containment, or other equipment or systems important to safety. Usually, the design of connection between flywheel and pump rotor has two types, one is keyway, and the other is rotor shrink fitting. This paper has done the research on the analysis of the integrity of flywheel in design rules and guidelines, such as NUREG, RG and NB, which have given the allowable stress limits but not given the potential for failures types and the stress verification type. So the stress verification of the flywheel is different in different technicals and structures. Some papers also have different analysis methods in China. This paper considers the failures mode of flywheel, using the analytical method in THEORY OF ELASTICITY and Tresca criteria to give the method of the stress analysis of flywheel. Next, this paper pays attention on the analysis of the flywheel integrity about two connection types, and gives the other requirements of integrity. Such as stress analysis, fatigue analysis, ductile failure analysis, non-ductile failure analysis, crack propagation analysis etc.

scholarly journals Elliptically polarized laser assisted elastic electron-hydrogen atom collision and differential scattering cross-section

2020 ◽  
pp. 93-102
Author(s):  
Kishori Yadav ◽  
S.P. Gupta ◽  
J.J. Nakarmi
Keyword(s):  
Hydrogen Atom ◽  
Kinetic Energy ◽  
Cross Section ◽  
Laser Field ◽  
High Energy ◽  
Scattering Cross Section ◽  
Hydrogen Atoms ◽  
Differential Scattering Cross Section ◽  
Scattering Cross ◽  
Cross Section Area

In the present study, we have investigated scattering of an electron by hydrogen atoms in the presence of the elliptical polarized laser field. We have discussed the polarization effect of laser field on hydrogen atom and effect of the resulted polarized potential on differential scattering cross-section is studied. We assume the scattered electrons having kinetic energy (~3000 eV) and laser field of moderate field strength because it is permitted to treat the scattering process in first Born approximation and the scattering electron was described by Volkov wave function. We found that the differential scattering cross-section area increases with the increase of the kinetic energy of the incident electron and there is no effect of changing the value of polarizing angle on the differential cross-section with kinetic energy. We observed that differential scattering cross-section in elliptical polarization in the high energy region depends upon the laser intensity and the incident energy for a linearly polarized field.

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