نتایج جستجو برای: stopping power

تعداد نتایج: 499755  

Journal: :International Journal of Environment, Engineering and Education 2021

In this paper, we calculated the mass stopping power (in MeV cm2/g) and range (cm) of proton in one types body tissues (lymph), from 1 Kev to 200 energy range. They are using Bethe Ziegler equations, SRIM program (version 2013) (Vol. 3) data by considering tissue composed several elements, so atomic number (Z) weight (A) for component meaning. The calculation results show that equation gives be...

2008
Luigi Foschini

The passage of particles through matter is one of the principal ways to investigate nature. In this article, we would like to outline the most important stages in the development of the theory about the stopping power. Le passage des particules à travers de la matière c’est une des routes principales pour ètudier la nature. In cet article nous voulons tracer les stages principales de le dévelop...

1998
H. B. Nersisyan C. Deutsch

The results of a theoretical investigation on the stopping power of ion pair in a magnetized electron plasma are presented, with particular emphasis on the two-ion correlation effects. The analysis is based on the assumptions that the magnetic field is classically strong (λB ≪ ac ≪ λD, where λB , ac and λD are respectively the electron de Broglie wavelength, Larmor radius and Debye length) and ...

2015
Sebastian Gerke Hans-Werner Becker Detlef Rogalla Barbara Terheiden

Nuclear Resonant Reaction Analysis (NRRA) is a common method detecting the near-surface hydrogen distribution of a sample in a depth of up to a few microns. The mass density and related stopping power of a hydrogenated amorphous silicon (a-Si:H) layer depends on the hydrogen content. Correct hydrogen depth profiles are calculated considering the effective ion beam stopping cross-section as well...

2000
IOANNIS KARATZAS DANIEL OCONE

This paper studies bounded-velocity control of a Brownian motion when discretionary stopping, or ‘leaving’, is allowed. The goal is to choose a control law and a stopping time in order to minimize the expected sum of a running and a termination cost, when both costs increase as a function of distance from the origin. There are two versions of this problem: the fully-observed case, in which the ...

Journal: :Physical review letters 2015
J A Frenje P E Grabowski C K Li F H Séguin A B Zylstra M Gatu Johnson R D Petrasso V Yu Glebov T C Sangster

For the first time, quantitative measurements of ion stopping at energies around the Bragg peak (or peak ion stopping, which occurs at an ion velocity comparable to the average thermal electron velocity), and its dependence on electron temperature (T(e)) and electron number density (n(e)) in the range of 0.5-4.0 keV and 3×10(22) to 3×10(23) cm(-3) have been conducted, respectively. It is experi...

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