نتایج جستجو برای: charged particles

تعداد نتایج: 196971  

2009
Nabil M. Lawandy

Charges of the same polarity bound to a surface with a large dielectric contrast exhibit an attractive long-range Coulomb interaction, which leads to a two-particle bound state. Ensembles of like charges experience a collective long-range interaction, which results in compacted structures with interparticle separations that can be orders of magnitude smaller than the equilibrium separation of t...

Journal: :Science 2004
Jens Martin Shahal Ilani Basile Verdene Jurgen Smet Vladimir Umansky Diana Mahalu Dieter Schuh Gerhard Abstreiter Amir Yacoby

An outstanding question pertaining to the microscopic properties of the fractional quantum Hall effect is understanding the nature of the particles that participate in the localization but that do not contribute to electronic transport. By using a scanning single electron transistor, we imaged the individual localized states in the fractional quantum Hall regime and determined the charge of the...

Journal: :Journal of radiation research 2002
Juergen Kiefer

Heavy charged particles constitute the most important radiation risk in space. Since mutations can give rise to cancer the investigation of their induction may be helpful for risk quantification. This paper describes experiments in a number of mammalian cells performed with a large range of linear energy transfer (LET). RBE values are always found to increase with LET up to about 100 keV/microm...

2005
Ludwik Kowalski Steven E. Jones Dennis Letts Dennis Cravens

After familiarizing himself with the use of CR-39 detectors, about a year ago, the first author asked Steven Jones to send him a TiDx foil, similar to that described at the Tenth International Conference on Cold Fusion (1). It was an attempt detect 3 MeV protons with the CR-39 chips. The idea was to develop an experiment suitable for student-oriented cold fusion projects. That is how the first ...

2018
Yugal Kumar Sumit Gupta Dharmender Kumar Gadadhar Sahoo

In pattern recognition, clustering is a powerful technique that can be used to find the identical group of objects from a given dataset. It has proven its importance in various domains such as bioinformatics, machine learning, pattern recognition, document clustering, and so on. But, in clustering, it is difficult to determine the optimal cluster centers in a given set of data. So, in this pape...

Journal: :Symmetry 2018
Ivan Morales Bruno Neves Zui Oporto Olivier Piguet

We review some properties of a relativistic classical massless charged particle with 9 spin interacting with an external electromagnetic field. We give in particular a proper definition 10 of kinetic energy and total energy, the latter being conserved when the external field is stationary. 11 We find that the particle’s velocity may differ from c as a result of the spin electromagnetic field 12...

Journal: :iranian journal of radiation research 0
j. zhu key laboratory of heavy ion radiation biology and medicine of chinese academy of sciences & gansu key laboratory of space radiobiology, institute of modern physics, chinese academy of sciences, lanzhou, 730000, p. r. of china z. ren key laboratory of heavy ion radiation biology and medicine of chinese academy of sciences & gansu key laboratory of space radiobiology, institute of modern physics, chinese academy of sciences, lanzhou, 730000, p. r. of china y. chen key laboratory of heavy ion radiation biology and medicine of chinese academy of sciences & gansu key laboratory of space radiobiology, institute of modern physics, chinese academy of sciences, lanzhou, 730000, p. r. of china h. ojha department of radiation genetics and epigenetics, institute of nuclear medicine and allied sciences, delhi 110054, india

the radiobiological effects of high atomic number and energy (hze particles) ion beams are of interest for radioprotection in space and tumor radiotherapy. space radiation mainly consists of heavy charged particles from protons to iron ions, which is distinct from common terrestrial forms of radiation. hze particles pose a significant cancer risk to astronauts on prolonged space missions. with ...

2008
V. U. Nazarov

A survey is presented of various aspects of the interaction of charged particles with solids. In the framework of many-body perturbation theory, we study the nonlinear interaction of charged particles with a free gas of interacting electrons; in particular, nonlinear corrections to the stopping power are analyzed, and special emphasis is made on the separate contributions that are originated in...

Journal: :Physical review. D, Particles and fields 1996
Zhai

We derive a formula for computing the transition rate for a process involving particles with momentum much higher than the temperature and chemical potentials in a plasma by using an effective field theory approach. We apply it to collision of charged particles with hard momentum inside a QED plasma. The Debye screening effect and the damping of a charged particle moving in QED plasma are studi...

Journal: :Progress of Theoretical Physics 1949

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