scholarly journals First applications of the ballistic model in femtosecond laser–matter interaction: Preliminary evidence of ac-run-away and new features about normal skin effect

2000 ◽  
Vol 18 (3) ◽  
pp. 541-547
Author(s):  
E. BÉSUELLE ◽  
D. TEYCHENNÉ ◽  
R.R.E. SALOMAA
Keyword(s):  
Skin Effect ◽  
Collision Frequency ◽  
Normal Skin ◽  
Preliminary Evidence ◽  
First Results ◽  
Coulomb Logarithm ◽  
Sudden Transition ◽  
In The Beginning ◽  
Normal Skin Effect

The role of collisional absorption is supposed to be important in the beginning of the interaction between a laser pulse and matter. Later on, collective absorption phenomenons take place. The scope of this paper is to present first results about the so-called AC-run-away effect, defined as a “sudden transition from collisional absorption regime to a collective one.” For this purpose, we use a simple model based on ballistic theory. The delicate point concerning the Coulomb logarithm is also studied: we propose for it a convenient cutoff and an ensemble averaged Coulomb logarithm fit formula. Another application of the model presented here is the normal skin effect. We show some sensible differences between the present approach and those based on more common and rough collision frequency formulas.

Normal skin effect in the polycrystals

1993 ◽  
Vol 3 (3) ◽  
pp. 177-198 ◽  
Author(s):  
I M Kaganova ◽  
M I Kaganov
Keyword(s):  
Skin Effect ◽  
Normal Skin ◽  
Normal Skin Effect

Zum normalen Skin-Effekt unter Berücksichtigung der magnetischen Widerstandsänderung

1964 ◽  
Vol 19 (11) ◽  
pp. 1273-1276
Author(s):  
Rudolf Klein
Keyword(s):  
Magnetic Field ◽  
Field Dependence ◽  
Eddy Current ◽  
Magnetic Field Dependence ◽  
Skin Effect ◽  
Normal Skin ◽  
Maximum Value ◽  
High Fields ◽  
The Magnetic Field ◽  
Normal Skin Effect

The penetration of a magnetic field into an infinite metallic half-space is altered due to the presence of the magnetoresistance of the medium. MAXWELL’S equations modified by the magnetic field dependence of the conductivity are solved for the case where the field at the surface is switched on immediately and is constant afterwards. It is shown that due to magnetoresistance the field runs into the medium quicker compared to the case of the pure normal skin effect. The induced eddy current has its maximum value no longer at the surface of the specimen. The results are discussed in connection with pulse methods for the measurement of magnetoresistance in high fields.

On the theory of the normal skin effect in a polycrystal metal

1993 ◽  
Vol 173 (6) ◽  
pp. 473-478 ◽  
Author(s):  
I.M. Kaganova ◽  
M.I. Kaganov
Keyword(s):  
Skin Effect ◽  
Normal Skin ◽  
Normal Skin Effect

scholarly journals Fokker–Planck simulations of interactions of femtosecond laser pulses with dense plasmas

1994 ◽  
Vol 12 (1) ◽  
pp. 101-110 ◽  
Author(s):  
J. Limpouch ◽  
L. Drska ◽  
R. Liska
Keyword(s):  
Femtosecond Laser ◽  
Skin Effect ◽  
Normal Skin ◽  
Electron Distribution Function ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
State Density ◽  
Dense Plasmas ◽  
Basic Characteristics ◽  
Normal Skin Effect

The interaction of femtosecond laser pulses with solid-state density plasmas in regime of normal skin effect is investigated by means of numerical simulation. For short-wavelength lasers and laser pulses with length ≲ 120 fs full width at half maximum, the regime of normal skin effect is shown to hold for peak intensities up to 1017 W/cm2. The basic characteristics of the interaction are revealed and certain departures from simplistic models in electron distribution function, in plasma dielectric constant, and in laser absorption are pointed out. Comparison with the published experimental results is made.

scholarly journals Эллипсометрия металлических пленок в условиях аномального скин-эффекта

2021 ◽  
Vol 129 (7) ◽  
pp. 889
Author(s):  
А.Б. Сотский ◽  
Е.А. Чудаков ◽  
Л.И. Сотская
Keyword(s):  
Electric Fields ◽  
Skin Effect ◽  
Complex Refractive Index ◽  
Normal Skin ◽  
Metallic Films ◽  
Aluminum Films ◽  
Polarized Waves ◽  
The Standard Model ◽  
Anomalous Skin Effect ◽  
Normal Skin Effect

Inhomogeneous Fredholm’s integral equations of the second kind are formulated, which describe the fields of TE and TM polarized waves in metallic films with allowance for the anomalous skin effect. The equations are solved numerically by the quadrature method. The electric fields in gold and aluminum films located on a silicon substrate and the angular dependences of the polarization angles of light reflected from the films are investigated. It is found that the solution of the inverse problem of multi-angle ellipsometry for metallic films using the standard model of the normal skin effect is characterized by instability of the reconstructed complex refractive index of the metal with a change in the thickness of the metallic film.

Zum Skin-Effekt zeitlich periodischer elektromagnetischer Felder unter Berücksichtigung der magnetischen Widerstandsänderung

1966 ◽  
Vol 21 (9) ◽  
pp. 1436-1443
Author(s):  
Joachim Seebass
Keyword(s):  
Magnetic Field ◽  
Electromagnetic Field ◽  
Half Space ◽  
Skin Effect ◽  
Normal Skin ◽  
Constant Thickness ◽  
Conducting Layer ◽  
Successive Approximation Method ◽  
The Magnetic Field ◽  
Normal Skin Effect

Magnetoresistance leads to a change of the normal skin-effect. The electromagnetic field, periodic in time, is calculated by a successive approximation method for a half-space, the electric conductivity of which is dependent quadratically on the magnetic field. As expected results show the existence of uneven harmonics. Compared with the case without magnetoresistance, the a-c-resist-ance of some part of the half-space is altered by additional terms, which are dependent on the intensity of the current. Analogous results are given for a planar conducting layer of constant thickness.

The Great Reform and the Fate of Capitalism in Russia (On the 150th Anniversary of the Emancipation Reform)

2011 ◽  
pp. 119-136
Author(s):  
M. Voeikov
Keyword(s):  
20Th Century ◽  
Historical Research ◽  
150Th Anniversary ◽  
In The Beginning

The paper deals with the problem of the establishment of capitalism in Russia in the late 19 - early 20th centuries. Using a wide array of historical research and documents the author argues that the thesis on the advanced state of capitalism in Russia in the beginning of the 20th century does not stand up to historical scrutiny, and the role of the famous Emancipation reform of 1861 appears to be of limited importance.

Expansion of borders in the Kurdistan region and local and regional positions

2019 ◽  
Vol 3 (11) ◽  
pp. 1
Author(s):  
Harith Qahtan Abdullah ◽  
Abbas Fadel Atwan
Keyword(s):  
Middle East ◽  
Central Government ◽  
Kurdistan Region ◽  
War On Terrorism ◽  
National State ◽  
The Face ◽  
In The Beginning

The borders of Kurdistan represent an important point in Kurdish thought. They represent the hope of establishing their national state. The circumstances of the war on terrorism in Iraq and Syria have led to the emergence of what is known as a "propaganda" and the formation of a global front in its struggle. And with the signs of the collapse of the Syrian state and the weakness of the Iraqi state in the face of the "dashing" in the beginning. These circumstances led to the emergence of the role of the Kurdistan region in the confrontation "ISIS" and maintain the administrative border in the three provinces of Kurdistan in addition to the province of Kirkuk. That the circumstances of the war on terrorism created new international conditions on the Middle East arena, which will generate many problems between the Kurdistan region and the central government of Baghdad, as well as other problems between the region, Syria, Turkey and Iran. The war on terrorism has made countries free to fight the opposition groups under the name Terrorism by their classification. The Turkish side is fighting the PKK within the borders of the Kurdistan region, and this war can develop in a post-"warlike" phase. The war in Syria is also contradictory to vision and not resolved to a specific side and Iran's position on developments is encouraging.

Sign in / Sign up

Export Citation Format

Share Document