Zobrazeno 1 - 10
of 209
pro vyhledávání: '"Roland Stamm"'
Publikováno v:
Atoms, Vol 12, Iss 4, p 19 (2024)
Spectral line shapes code in plasmas (SLSPs) code comparison workshops have been organized in the last decade with the aim of comparing the spectra obtained with independently developed analytical and numerical models. Here, we consider the simultane
Externí odkaz:
https://doaj.org/article/c3e37b7328c84f4f820a4915a57a7ca5
Autor:
Ibtissem Hannachi, Roland Stamm
Publikováno v:
Atoms, Vol 11, Iss 10, p 128 (2023)
Periodic electric fields are found in many kinds of plasmas and result from the presence of collective fields amplified by plasma instabilities, or they are created by external sources such as microwave generators or lasers. The spectral lines emitte
Externí odkaz:
https://doaj.org/article/b30468781d0349cf9a4c90e3f767ebc2
Publikováno v:
Atoms, Vol 2, Iss 2, Pp 253-258 (2014)
In weakly coupled plasmas, it is common to describe the microfield using a Debye model. We examine here an “artificial” ideal one-component plasma with an infinite Debye length, which has been used for the test of line shape codes. We show that t
Externí odkaz:
https://doaj.org/article/bbd0b5c5ed114262a733c76a89a7aa38
Autor:
Milan S. Dimitrijević, Zoran Simić, Roland Stamm, Joël Rosato, Nenad Milovanović, Cristina Yubero
Publikováno v:
Atoms, Vol 6, Iss 1, p 10 (2018)
Stark broadening parameters, line width and shift, are needed for investigations, analysis and modelling of astrophysical, laboratory, laser produced and technological plasmas. Especially in astrophysics, due to constantly increasing resolution of sa
Externí odkaz:
https://doaj.org/article/ba3d34d3bf5943b6b8b9cca51a90aa1a
Autor:
Ny Kieu, Joël Rosato, Roland Stamm, Jelena Kovačević-Dojcinović, Milan S. Dimitrijević, Luka Č. Popović, Zoran Simić
Publikováno v:
Atoms, Vol 5, Iss 4, p 44 (2017)
White dwarfs with magnetic field strengths larger than 10 T are understood to represent more than 10% of the total population of white dwarfs. The presence of such strong magnetic fields is clearly indicated by the Zeeman triplet structure visible on
Externí odkaz:
https://doaj.org/article/75bfe03057dc4915bedb371c3ba7b0f4
Autor:
Joël Rosato, Ny Kieu, Ibtissem Hannachi, Mohammed Koubiti, Yannick Marandet, Roland Stamm, Milan S. Dimitrijević, Zoran Simić
Publikováno v:
Atoms, Vol 5, Iss 4, p 36 (2017)
The shape of atomic spectral lines in plasmas contains information on the plasma parameters, and can be used as a diagnostic tool. Under specific conditions, the plasma located at the edge of tokamaks has parameters similar to those in magnetic white
Externí odkaz:
https://doaj.org/article/da70dfc9ac19442ea29ff29310ea15f4
Publikováno v:
Atoms, Vol 5, Iss 4, p 35 (2017)
We present an analysis of spectra observed in a corona discharge designed for the study of dielectrics in electrical engineering. The medium is a gas of helium and the discharge was performed at the vicinity of a tip electrode under high voltage. The
Externí odkaz:
https://doaj.org/article/15010456f456489b9c0bcfe393f1ac05
Autor:
Roland Stamm, Ibtissem Hannachi, Mutia Meireni, Laurence Godbert-Mouret, Mohammed Koubiti, Yannick Marandet, Joël Rosato, Milan S. Dimitrijević, Zoran Simić
Publikováno v:
Atoms, Vol 5, Iss 3, p 32 (2017)
Impact approximation is widely used for calculating Stark broadening in a plasma. We review its main features and different types of models that make use of it. We discuss recent developments, in particular a quantum approach used for both the emitte
Externí odkaz:
https://doaj.org/article/c00e7247490c4a59b19bb6952c3c7644
Publikováno v:
Atoms, Vol 5, Iss 4, p 34 (2017)
We look at the effect of wave collapse turbulence on a hydrogen line shape in plasma. An atom immersed in plasma affected by strong Langmuir turbulence may be perturbed by a sequence of wave packets with a maximum electric field magnitude that is lar
Externí odkaz:
https://doaj.org/article/6fed6c72e76f4308aa8cdbb511bf34b9
Publikováno v:
Advances in Space Research. 71:1269-1274
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::731ba4cfcfa567b5efb316fc3aa55cb0
https://doi.org/10.1016/j.asr.2021.12.009
https://doi.org/10.1016/j.asr.2021.12.009