Damage Formation and Calculation of Energy Loss during Implantation of Antimony and Boron Ion in Silicon Target

The aim of this research work is a computational study of damage profile and visualization of the ion implantation graph obtained from the simulation method using SRIM-2013 software. SRIM (Stopping and Range of Ions in Matter) helps in calculating the energy required for an ion to obtain maximum concentration for desirable range and TRIM (Transport of Ions in Matter) is used to calculate doping statistics and calculation of energy loss. The main objective of this work is to get knowledge about the graphical study of ion range, distribution, stopping power and energy loss during implantation of antimony and boron ion on the silicon target within 0 to 3500 Å target depth. The implantations of 10,000 antimony and boron ions are accelerated by 350 keV and 45 keV energy in silicon monolayer target to obtain maximum defects concentration. The result of the ionization process indicates that 11.68% of the total energy of antimony ion and 65.25% of the total energy of boron ion are lost during the ionization process. This indicates that lighter boron ion causes more ionization than the heavier antimony ion for the same projected range.

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A Method of Predicting the Energy Losses in Vaneless Diffusers of Centrifugal Compressors

Volume 1: Turbomachinery ◽

10.1115/89-gt-158 ◽

1989 ◽

Cited By ~ 1

Author(s):

Huashu Dou

Keyword(s):

Experimental Data ◽

Energy Loss ◽

Total Energy ◽

Wall Friction ◽

Energy Losses ◽

Flow Conditions ◽

Centrifugal Compressors ◽

Flow Losses ◽

Vaneless Diffusers ◽

Good Agreement

The flow losses in the veneless diffusers of centrifugal compressors is investigated. It is found that the total energy loss in vaneless diffusers is a function of Bsin2 α0 when inlet flow conditions and radius ratio between inlet and outlet are given. A wall friction coefficient equation is derived and a method of predicting the total energy loss excepting mixing loss is presented. A comparison is made between results obtained from this method and experimental data generated by the author as well as data from the literature. Good agreement is obtained.

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Estimating Weights of Evaluation Factors on Basis of Monte Carlo Simulation

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.268-270.1735 ◽

2012 ◽

Vol 268-270 ◽

pp. 1735-1740

Author(s):

Yan Fei Tian ◽

Li Wen Huang

Keyword(s):

Monte Carlo Simulation ◽

Monte Carlo ◽

Random Process ◽

Stochastic Simulation ◽

Research Work ◽

Simulation Method ◽

Distribution Functions ◽

Probability Process ◽

Evaluation Work

Although the value of factor weight in an evaluation work is deterministic, the solving process is random, so connection between weight solution with digital characteristics or distribution functions of specific random variables or random process could be build. Using stochastic simulation method to get a lot of random solutions to the problem, expectation of the random solutions can be used as a estimation solution. On basis of idea of Monte Carlo simulation, this paper analyzed the probability process of calculating factor weight, and provided the procedures of estimating factor weight by means of Monte Carlo simulation. Through discussion and example in this paper, feasibility and validity of this method were proved, which may make foreshadowing for follow-up research work.

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Fundamental Validation of Simulation Method for Thermal Stratification in Upper Plenum of Fast Reactors : Analysis of Sodium Experiment(The 14th National Symposium on Power and Energy System)

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B ◽

10.1299/kikaib.76.763_451 ◽

2010 ◽

Vol 76 (763) ◽

pp. 451-453

Author(s):

Shuji OHNO ◽

Akihiro SUGAHARA ◽

Hiroshi OHKI ◽

Hiroyuki OHSHIMA

Keyword(s):

Thermal Stratification ◽

Simulation Method ◽

Energy System ◽

Special Issue ◽

Fast Reactors ◽

National Symposium ◽

Power And Energy

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Numerical and Experimental Research on the Ultimate Strength for a Stiffened Titanium Cylinder

Volume 11B: Honoring Symposium for Professor Carlos Guedes Soares on Marine Technology and Ocean Engineering ◽

10.1115/omae2018-78663 ◽

2018 ◽

Author(s):

Siming Yuan ◽

Qiang Chen

Keyword(s):

Ultimate Strength ◽

Research Work ◽

High Strength ◽

Simulation Method ◽

Influential Factors ◽

Material Nonlinearity ◽

Cylinder Pressure ◽

Scaled Model ◽

Strength Evaluation ◽

Strength Assessment

Titanium alloys are widely used in naval ships due to its high strength, low density, no magnetism, corrosion resistance and so on. However, the material nonlinearity brings new challenges to the ultimate strength evaluation on the Titanium structure. This work is to evaluate the ultimate strength for a stiffened titanium cylinder with consideration of material nonlinearity by numerical analysis and scaled model experiment. Firstly, a series of titanium alloy stiffened cylinder pressure hulls are analyzed for their ultimate strength by non-linear Finite Element Method (FEM). Secondly, model tests are carried out for the above titanium cylinders to obtain their ultimate carrying capacity. Thirdly, the good agreement between experiment and numerical results verify that the numerical simulation method is suitable for ultimate strength evaluation. Finally, some influential factors on the ultimate capacity of the stiffened titanium cylinder are investigated, including stiffeners arrangement, thickness of cylinder hulls, inside diameter. The research work can map the limitations of the current rules and to support the development of ultimate strength assessment guidelines for titanium cylinder pressure hulls.

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