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Paper Information

Journal:   JOURNAL OF THEORETICAL AND APPLIED PHYSICS (IRANIAN PHYSICAL JOURNAL)   MARCH 2016 , Volume 10 , Number 1; Page(s) 33 To 39.
 
Paper: 

THE EFFECT OF EXTERNAL MAGNETIC FIELD ON THE DENSITY DISTRIBUTIONS AND ELECTROMAGNETIC FIELDS IN THE INTERACTION OF HIGH-INTENSITY SHORT LASER PULSE WITH COLLISIONLESS UNDERDENSE PLASMA

 
 
Author(s):  MAHMOODI DARIAN MASOOMEH*, ETTEHADI ABARI MEHDI, SEDAGHATI MAHSA
 
* DEPARTMENT OF PHYSICS, KARAJ BRANCH, ISLAMIC AZAD UNIVERSITY, KARAJ, IRAN
 
Abstract: 

Laser absorption in the interaction between ultra-intense femtosecond laser and solid density plasma is studied theoretically here in the intensity range Il2   ?~ 1014-1016 W cm-2 m2. The collisionless effect is found to be significant when the incident laser intensity is less than 1016 W cm-2 mm2. In the current work, the propagation of a high-frequency electromagnetic wave, for underdense collisionless plasma in the presence of an external magnetic field is investigated. When a constant magnetic field parallel to the laser pulse propagation direction is applied, the electrons rotate along the magnetic field lines and generate the electromagnetic part in the wake with a nonzero group velocity. Here, by considering the ponderomotive force in attendance of the external magnetic field and assuming the isothermal collisionless plasma, the nonlinear permittivity of the plasma medium is obtained and the equation of electromagnetic wave propagation in plasma is solved. Here, by considering the effect of the ponderomotive force in isothermal collisionless magnetized plasma, it is shown that by increasing the laser pulse intensity, the electrons density profile leads to steepening and the electron bunches of plasma become narrower. Moreover, it is found that the wavelength of electric and magnetic field oscillations increases by increasing the external magnetic field and the density distribution of electrons also grows in comparison to the unmagnetized collisionless plasma.

 
Keyword(s): LASER PLASMA INTERACTION, PONDEROMOTIVE FORCE, UNDERDENSE MAGNETIZED PLASMA, NONRELATIVISTIC REGIME, ELECTRONS DENSITY DISTRIBUTION
 
 
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APA: Copy

MAHMOODI DARIAN, M., & ETTEHADI ABARI, M., & SEDAGHATI, M. (2016). THE EFFECT OF EXTERNAL MAGNETIC FIELD ON THE DENSITY DISTRIBUTIONS AND ELECTROMAGNETIC FIELDS IN THE INTERACTION OF HIGH-INTENSITY SHORT LASER PULSE WITH COLLISIONLESS UNDERDENSE PLASMA. JOURNAL OF THEORETICAL AND APPLIED PHYSICS (IRANIAN PHYSICAL JOURNAL), 10(1), 33-39. https://www.sid.ir/en/journal/ViewPaper.aspx?id=511469



Vancouver: Copy

MAHMOODI DARIAN MASOOMEH, ETTEHADI ABARI MEHDI, SEDAGHATI MAHSA. THE EFFECT OF EXTERNAL MAGNETIC FIELD ON THE DENSITY DISTRIBUTIONS AND ELECTROMAGNETIC FIELDS IN THE INTERACTION OF HIGH-INTENSITY SHORT LASER PULSE WITH COLLISIONLESS UNDERDENSE PLASMA. JOURNAL OF THEORETICAL AND APPLIED PHYSICS (IRANIAN PHYSICAL JOURNAL). 2016 [cited 2021July24];10(1):33-39. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=511469



IEEE: Copy

MAHMOODI DARIAN, M., ETTEHADI ABARI, M., SEDAGHATI, M., 2016. THE EFFECT OF EXTERNAL MAGNETIC FIELD ON THE DENSITY DISTRIBUTIONS AND ELECTROMAGNETIC FIELDS IN THE INTERACTION OF HIGH-INTENSITY SHORT LASER PULSE WITH COLLISIONLESS UNDERDENSE PLASMA. JOURNAL OF THEORETICAL AND APPLIED PHYSICS (IRANIAN PHYSICAL JOURNAL), [online] 10(1), pp.33-39. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=511469.



 
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