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Mass Stopping Power and Range of protons in Biological Human Body Tissues (Ovary, Lung and Breast)

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International Journal of Medical Physics, Clinical Engineering and Radiation Oncology 2022年第1期11卷 48-59页

作者： Ahlam S. Almutairi Khalda T. Osman Department of Physics College of Science Qassim University AL-Rass Saudi Arabia Department of Physics College of Science Qassim University Buraydah Saudi Arabia

In this work, the mass stopping power and range of protons in biological human body tissues (ovary, lung and breast) were calculated at the energy ranging from 0.04 MeV to 200 MeV using the MATLAB Program. The data relating to the densities, average atomic number to mass number and excitation energy for the present tissues were collected from ICRU Report 46. The mass stopping power was calculated by the Bethe formula. Moreover, the simple integration (continuous slowing down approximation) method was employed for calculating protons range at the tissues. The results of the mass stopping power versus energy and the range versus energy were presented graphically and the empirical formulae for calculating the mass stopping power and the ranges were obtained. The present results for mass stopping powers and ranges were compared with the results obtained by others. Good agreements were found between them, especially at the energy ranging from 3 to 200 MeV.

关键词： Human Body Tissues protons Range MATLAB Mass Stopping Power

Calculation of Mass Stopping Power and Range of protons as Well as Important Radiation Quantities in Some Biological Human Bodyparts (Water, Muscle, Skeletal and Bone, Cortical)

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International Journal of Medical Physics, Clinical Engineering and Radiation Oncology 2022年第2期11卷 99-112页

In this work, the electronic mass stopping power and the range of protons in some biological human body parts (Water, Muscle, Skeletal and Bone, Cortical) were calculated in the energy range of protons 0.04 to 200 MeV using the theory of Bethe-Bloch formula as giving in the references. All these calculations were done using Matlab program. The data related to the densities, average atomic number to mass number and excitation energies for the present tissues and substances were collected from ICRU Report 44 (1989). The present results for electronic mass stopping powers and ranges were compared with the data of PSTAR and good agreements were found between them, especially at energies between 1 - 200 MeV for stopping power and 4 - 200 MeV for the range. Also in this study, several important quantities in the field of radiation, such as thickness, linear energy transfer (LET), absorbed dose, equivalent dose, and effective dose of the protons in the given biological human body parts were calculated at protons energy 0.04 - 200 MeV.

关键词： Biological Human Bodyparts protons Range MatLab PSTAR Electronic Mass Stopping Power LET Absorbed Dose Effective and Equivalent Dose

A comparison of ionizing radiation damage in CMOS devices from ^(60)Co gamma rays,electrons and protons

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Chinese Physics C 2009年第6期33卷 436-439页

作者：何宝平姚志斌张凤祁 Northwest Institute of Nuclear Technology

Radiation hardened CC4007RH and non-radiation hardened CC4011 devices were irradiated using ^60Co gamma rays, 1 MeV electrons and 1-9 MeV protons to compare the ionizing radiation damage of the gamma rays with the charged particles. For all devices examined, with experimental uncertainty, the radiation induced threshold voltage shifts （△Vth） generated by ^60Co gamma rays are equal to that of 1 MeV electron and 1-7 MeV proton radiation under 0 gate bias condition. Under 5 V gate bias condition, the distinction of threshold voltage shifts （△Vth） generated by ^60Co gamma rays and 1 MeV electrons irradiation are not large, and the radiation damage for protons energy the proton has, the less serious below 9 MeV is always less than the radiation damage becomes. that of ^60Co gamma rays. The lower

关键词： gamma rays electrons protons radiation damage

Emission of protons in Inelastic Nucleus-Nucleus Collisions at High Energy

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Chinese journal of nuclear physics 1995年第4期17卷 292-297页

作者： Liu, Fuhu Shanxi Teachers Univ Linfen China

Based on the participant-spectator model and the analysis of particle producing proce-ss, the rapidity distribution and the noninvariant center-of-mass energy spectrum of final pro-tons produced in inelastic nucleus-n... 详细信息

关键词： Nucleus-nucleus collisions Final protons Rapidity distribution Noninvariant c.m. energy spectrum

3-17 An Experimental Study of Single-event Upset Induced by Low Energy protons in 65 nm Commercial QDR II SRAMs

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IMP & HIRFL Annual Report 2015年第1期 111-111页

作者： Ye Bing Liu Jie Luo Jie Xi Kai Liu Tianqi Wang Bin Yin Yanan Ji Qinggang 不详

Scaling down of semiconductor encounters varieties of technical challenges such as Vth variation, critical charge. It is shown that circuits have scaled to the point that now even low-energy protons(LEPs) can cause single event upsets through direct ionization[1]. Some of studies predicted that proton direct ionization (PDI) would dominate the total SEE rate[2], thus we focus on this study.

关键词： Low Energy protons

Nondestructive identification of ancient Chinese glasses by Raman and proton-induced X-ray emission spectroscopy

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Chinese Optics Letters 2011年第3期9卷 84-87页

作者：赵虹霞承焕生李青会干福熹 Center of Sci-Tech Archaeology Shanghai Institute of Optics and Fine MechanicsChinese Academy of Sciences Institute of Modern Physics Fudan University

Nondestructive Raman spectroscopy and external-beam proton-induced X-ray emission （PIXE） technique to analyze eight ancient glasses unearthed from the provinces of Henan,Hubei,and Jiangsu,which allowes for a good characterization of the glass matrix and chemical compositions,is carried *** results indicate that all the eight glass samples could be typically divided into three systems： faience （sample ***-4）,PbO-BaO-SiO 2 （sample ***-5-1,HNWKII-88,and HNWKII-84）,and Na 2 OCaO-SiO 2 （sample ***-16,HBWKI-17,HBWKI-18,and SZWG-1）.Additional relationships between the Raman spectra and parameters,such as residues of raw materials and opacifying agent,are also discussed by respectively comparing them with similar glass samples excavated from other historical sites.

关键词： Chemical analysis Electromagnetic wave emission Emission spectroscopy Ion beams Lead oxide protons Raman scattering Raman spectroscopy Silicon compounds Sodium X ray scattering

A New Method of Measuring Electron Emission Induced by Low Energy Ions from Solids

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Chinese Physics Letters 2005年第9期22卷 2241-2243页

作者：张恒大 A. Breskin R. Chechik S. Shckemelinin E. Cheifetz Department of Particle Physics Weizmann Institute of Science Rehovot 76100 Israel E1-Mul Technologies Yavne 81104 Israel

A new mathematical method of measuring electron emission induced by low energy ions from solids is described and used to calculate secondary electron emission according to the recorded pulse-height spectra of ions and ultraviolet （UV） photons. Using the UV single secondary electron spectra, we predict the shape of many secondary electron distributions under consideration of detection efficiency of MCP detector. These calculated distributions allow us to characterize the secondary electrons yield, and to give a secondary electron distribution for measured data. It seems rather feasible to determine secondary electron yield emitted by low energy ions at very low ion uxes.

关键词： VAPOR-DEPOSITED DIAMOND FILMS AFFINITY protons

Monte Carlo predictions of proton SEE cross-sections from heavy ion test data

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Chinese Physics C 2016年第6期40卷 43-48页

作者：习凯耿超张战刚侯明东孙友梅罗捷刘天奇王斌叶兵殷亚楠刘杰 Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China Academy of Shenzhen State Microelectronics Co. Ltd.Shenzhen 518057China Science and Technology on Reliability Physics and Application of Electronic Component Laboratory ChinaElectronic Product Reliability and Environmental Testing Research InstituteGuangzhou 510610China

The limits of previous methods prompt us to design a new approach （named PRESTACE） to predict proton single event effect （SEE） cross-sections using heavy-ion test data. To more realistically simulate the SEE mechanisms, we adopt Geant4 and a location-dependent strategy to describe the physics processes and the sensitivity of the device. Cross-sections predicted by PRESTAGE for over twenty devices are compared with the measured data. Evidence shows that PRESTACE can calculate not only single event upsets induced by indirect proton ionization, but also direct ionization effects and single event latch-ups. Most of the PRESTAGE calculated results agree with the experimental data within a factor of 2 3.

关键词： single event effects Geant4 protons heavy ions

Dynamics of Coulomb explosion of hydrogen clusters in a high-intensity femtosecond laser pulse

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Chinese Optics Letters 2006年第2期4卷 122-124页

作者：蔡旭红张培晴蒋月李邵辉 Department of Physics

Using Bethe model, the dynamics of the ionization and Conlomb explosion of hydrogen clusters （0.5 5 nm） in high-intensity （10^15- 10^17 W/cm^2） femtosecond laser pulses have been st, ndied theoretically, and tile dependence of energy of protons emitted from exploding clusters on cluster size and laser intensity has been investigated. It is found that the maximum proton energy increases exponentially with the cluster size, and the exponent is mainly determined by the laser intensity. For a given cluster size, the maximum proton energy increases with increasing laser intensity and gets saturat, ion gradually. The calculation results are in agreement with the recent experimental observation.

关键词： Calculations Dynamics Explosions Hydrogen Ionization protons