Professor of Physics

[1]H. Mehdian, A. Hasanbeigi, and S. Jafari,Self-fields in a free-electron laser with electromagnetic-wave wiggler and ion-channel guiding,Phys. Plasmas 15, 123101 (2008); 

[2] H. Mehdian, S. Saviz, Electron trajectory and growth rate in a two-stream electromagnetically pumped free electron laser and axial guide field  , Phys. Plasmas 15, 093103 (2008); 

[3] H. Mehdian, A. Hasanbeigi, and S. Jafari, Dispersion relation and growth rate in electromagnetically pumped free-electron lasers with ion-channel guiding, Phys. Plasmas 15, 073103 (2008); 

[4]  H. Mehdian, S. Jafari, and A. Hasanbeigi, Steady-state electron trajectories and growth rate in electromagnetically pumped free-electron laser with specific nonuniform magnetic field, Phys. Plasmas 15, 073102 (2008); 

[5] A Raghavi, G De Ninno, H Mehdian, Effects of ion-channel guiding on the saturation mechanism of a single-pass free-electron laser, Nuclear Instruments and Methods in Physics Research A 591 338–342,(2008) 

 [6] H. Mehdian, S. Saviz, and A. Hasanbeigi, Dispersion relation and growth in a two-stream free electron laser with helical wiggler and ion channel guiding, Phys. Plasmas 15, 013111 (2008)

[7] H Mehdian, N Abbasi, Dispersion relation and growth in a two-stream free electron laser with helical wiggler and ion channel guiding, Phys. Plasmas 15, 013111 (2008)

[8] H. Mehdian and S. Jafari, A comparison between electron orbits for both an axial magnetic field and an ion-channel guiding in a FEL with an electromagnetic wave wiggler, Journal of Plasma Physics (2008), 74: 187-196 Cambridge University

[9] H Mehdian, N Abbasi, Kinetic description of a planar wiggler free electron laser with ion-channel guiding ,Plasma Phys. Control. Fusion 49, 2051-2061, ( 2007)

[10] H. Mehdian and A.Raghavi,  Dispersion relation and growth rate for a high gain ion-channel FEL with a helical wiggler pump, Plasma Phys. Control. usion 49,  69-84, (2007) 

[11] S. Daryanoosh and H. Mehdian, Dispersion relation for azimuthal electromagnetic surface waves on a magnetized annular plasma in a metal waveguide with coaxial anisotropic dielectric inner coating, Journal of Plasma Physics, 73: 839-855, Cambridge University Press, (2007).

[12] H. Mehdian and A.Raghavi, Kinetic description of a wiggler pumped ion-channel free electron laser,Plasma Phys. Control. Fusion ,48 ,991-1003,( 2006).

[13] A. Soleyman, H. Mehdian, Chaotic Electron Trajectories in a Planar Wiggler Free-Electron Laser,Acta Physica Polonica A, vol. 110, Issue 4, p.459 (2006).

[14] S Saviz, H Mehdian, The Effect of Ion-Channel Guiding on the Chaotic Electron Trajectories in a Free Electron Laser, Acta Physica Polonica A, Vol. 107, No. 6, (2005).

[15]  B. Jazi, H. Mehdian, Dispersion relation of azimuthal electromagnetic surface waves on a magnetized plasma column in a dielectric lined slow-wave waveguide, Plasma Phys. Control. Fusion , 46, 507-518, (2004) .

[16] M. Esmaeilzadeh, H. Mehdian and J. E. Willett, Electron trajectories in a free-electron laser with helical wiggler, ion-channel guiding, and parallel/reversed axial magnetic field, Journal of Plasma Physics, 70, 9-24, (2004).

[17] M. Esmaeilzadeh, H. Mehdian, J.E. Willet, Self-fields in a free-electron laser with helical wiggler and ion-channel guiding, Phys. Plasmas, Vol. 10, Issue 3, pp. 905-907,(2003).

[18] M. Esmeelzadeh , H. Mehdian, J. E. Willett, Gain in a free-electron laser with planar wiggler and ion-channel guiding, Phys. Plasmas, Vol. 9, Issue 2, pp. 670-677. February (2002).

[19] U.H. Hwang , H. Mehdian, J. E. Willett, YM Aktas , Dispersion relation and growth in a free-electron laser with planar wiggler and ion-channel guiding,Phys. Plasmas, Vol. 9, Issue 3, pp. 1010-1014, March (2002).

 [20] Y Aktas, JE Willett, H Mehdian, M Esmaeilzadeh, Self-Fields in a Free-Electron Laser with Ion-Channel Guiding, American Physical Society, 44th Annual Meeting of the the Division of Plasma, (2002)

[21] H. Mehdian, M. Esmeelzadeh, J. E. Willett, Electron trajectories in a free-electron laser with planar wiggler and ion-channel guiding, Phys. Plasmas, Vol. 8, Issue 8, pp. 3776-3780, August (2001).

[22] Y. Aktas,J.E. Willett,U.H. Hwang, H. Mehdian, Free-Electron Laser with Ion-Channel Guiding,American Physical Society, 43rd Annual Meeting of the APS Division of Plasma Physics October 29 - November 2, 2001 Long Beach, California, abstract #FP1.105.

[23] M. Esmaeilzadeh, H. Mehdian, J. Willet, Gain equation for a free-electron laser with a helical wiggler and ion-channel guiding ,Phys. Rev. E 65, 016501 (2001)   

[24] B. Maraghechi , B. Farrokhi, J. E. Willett, B. Bolon and H. Mehdian, Wiggler-field effects on the space-charge waves of a Raman free-electron laser ,Phys. Rev. E 60, 2264 - 2271 (1999).

[25] JE Willett, B Bolon, Y Aktas, H Mehdian, Space-charge waves in the wiggler field of a Raman free-electron laser,Phys. Rev. E 57, 7169 - 7175 (1998).

[26] U. H. Hwang, J. E. Willett, H. Mehdian, Space-charge waves in a coaxial plasma waveguide,  Phys. Plasmas, January Vol. 5, Issue 1, pp. 273-278, March (1998).

[27] H. Mehdian, J. E. Willett, Y. Aktas, Effects of wiggler and axial guide fields on wave propagation in a free-electron laser, Phys. Plasmas, Volume 5, Issue 11, pp. 4079-4083, November (1998).

[28] J. E. Willett,  U. H. Hwang, Y. Aktas, H. Mehdian, Electrostatic beam modes in a free-electron laser with a coaxial wiggler,Phys. Rev. E 57, 2262 - 2266 (1998).

 [29] Y. Aktas, J.E. Willett, B. Maraghechi, B. Farrokhi, H. Mehdian,  Wave Propagation in a Raman Free-Electron laser,American Physical Society, Division of Plasma Physics Meeting, November 16-20, (1998).

[30] U.H. Hwang, H. Mehdian, J. E. Willett, Space-charge waves in a coaxial plasma waveguide, Phys. Plasmas, Vol. 5, Issue 1, pp. 273-278, January (1998).

 [31]Y. Aktas,J.E. Willett, Bolon, Hwang,  H. Mehdian , Space-Charge Waves in Raman Free-Electron Lasers, American Physical Society, Division of Plasma Physics Meeting, November 17-21, 1997, abstract #dMopM09.

[32] H. Mehdian, J. E. Willett, Free electron laser with longitudinal wiggler and finite magnetic field in a partially filled waveguide, Phys. Plasmas, Volume 3, Issue 3, pp. 1130-1136, March (1996).

[33] J. E. Willett, Y. Aktas, H. Mehdian, Excitation of a transverse magnetic waveguide mode near cutoff in a free-electron laser, Phys. Plasmas, Vol. 2, Issue 4, pp. 1311-1315, April (1995).

[34] J.E .Willett, Y. Aktas , B. Maraghechi and H. Mehdian, Magnetic field effects in a free electron laser with longitudinal electric wiggler, Journal of Physics D: Applied Physics, Volume 27, Number 2, pp. 211-218(8), (1994).

[35] J. E. Willett, Y. Aktas, B. Maraghechi, H.Mehdian, Stimulated Raman scattering of an EH waveguide mode near cyclotron resonance,Phys. Rev. E 49, 4739 - 4742 (1994).

[36] B. Maraghechi,  J. E. Willett,  H. Mehdian, Y. Aktas, High-frequency waves in a plasma waveguide, Phys. Plasmas, Volume 1, Issue 10, pp. 3181-3188, October (1994).

[37] B. Maraghechi, H. Mehdian, J.E. Willet, Relativistic free-electron generator of space-charge waves, J. Phys. D: Appl. Phys. 26 9-15, (1993).

[38] H Mehdian, UH Hwang, JE Willett, Free-electron laser with longitudinal wiggler in a waveguide partially filled with a relativistic electron beam , J. Appl. Phys. 70, 517 (1991);

[39] J.E.  Willet, P. Uddholm, S. Bilikmen, H. Mehdian, Free electron laser with longitudinal electric wiggler, Applied Physics, Volume 23, Issue 10, pp. 1290-1297 (1990).

[41] J. E. Willett, H. Mehdian, Effects of collisions on current-driven ion-electrostatic waves, Physics Letters A, Volume 86, Issue 3, p. 145-148.(1981)

[42] J. E. Willett and H. Mehdian, Ion-electrostatic instabilities in current-carrying magnetized plasmas, J. Appl. Phys. Vol. 52, Issue 10, pp. 6078-6083, October (1981).

[43] H Mehdian, Electrostatic Waves in Current-Carrying Plasma, Thesis (PH.D.)--UNIVERSITY OF MISSOURI - COLUMBIA, (1981).Source: Dissertation Abstracts International, Volume: 43-06, Section: B, page: 1885

[44] J. E. Willett, H.  Mehdian, Resistive instabilities in current-carrying magnetized plasmas, Physics Letters A, vol. 80, p. 263-265, (Dec. 1980).