Target surface area effects on hot electron dynamics from high intensity laser–plasma interactions

Zulick, C.; Raymond, A.; McKelvey, A.; Chvykov, V.; Maksimchuk, A.; Thomas, A. G. R.; Willingale, L.; Yanovsky, V.; Krushelnick, K.

doi:10.1088/1367-2630/18/6/063020

Title: Target surface area effects on hot electron dynamics from high intensity laser–plasma interactions

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Abstract

Reduced surface area targets were studied using an ultra-high intensity femtosecond laser in order to determine the effect of electron sheath field confinement on electron dynamics. X-ray emission due to energetic electrons was imaged using a K_α imaging crystal. Electrons were observed to travel along the surface of wire targets, and were slowed mainly by the induced fields. Targets with reduced surface areas were correlated with increased hot electron densities and proton energies. Furthermore, Hybrid Vlasov–Fokker–Planck simulations demonstrated increased electric sheath field strength in reduced surface area targets.

Authors:: Zulick, C.; Raymond, A.; McKelvey, A.; Chvykov, V.; Maksimchuk, A.; Thomas, A. G. R.; Willingale, L.; Yanovsky, V.; Krushelnick, K.

Publication Date:: Wed Jun 01 00:00:00 EDT 2016

Research Org.:: Univ. of Michigan, Ann Arbor, MI (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1257285

Alternate Identifier(s):: OSTI ID: 1257287; OSTI ID: 1299137

Grant/Contract Number:: NA0002372

Resource Type:: Published Article

Journal Name:: New Journal of Physics

Additional Journal Information:: Journal Name: New Journal of Physics Journal Volume: 18 Journal Issue: 6; Journal ID: ISSN 1367-2630

Publisher:: IOP Publishing

Country of Publication:: United Kingdom

Language:: English

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; laser-plasma; mass-limited; fast electrons; sheath field

Citation Formats


                    Zulick, C., Raymond, A., McKelvey, A., Chvykov, V., Maksimchuk, A., Thomas, A. G. R., Willingale, L., Yanovsky, V., and Krushelnick, K. Target surface area effects on hot electron dynamics from high intensity laser–plasma interactions.  United Kingdom: N. p., 2016. 
Web.  doi:10.1088/1367-2630/18/6/063020.

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                    Zulick, C., Raymond, A., McKelvey, A., Chvykov, V., Maksimchuk, A., Thomas, A. G. R., Willingale, L., Yanovsky, V., & Krushelnick, K. Target surface area effects on hot electron dynamics from high intensity laser–plasma interactions.  United Kingdom.  https://doi.org/10.1088/1367-2630/18/6/063020

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                    Zulick, C., Raymond, A., McKelvey, A., Chvykov, V., Maksimchuk, A., Thomas, A. G. R., Willingale, L., Yanovsky, V., and Krushelnick, K. Wed .  
"Target surface area effects on hot electron dynamics from high intensity laser–plasma interactions".  United Kingdom.  https://doi.org/10.1088/1367-2630/18/6/063020.

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@article{osti_1257285,

  title        = {Target surface area effects on hot electron dynamics from high intensity laser–plasma interactions},

  author       = {Zulick, C. and Raymond, A. and McKelvey, A. and Chvykov, V. and Maksimchuk, A. and Thomas, A. G. R. and Willingale, L. and Yanovsky, V. and Krushelnick, K.},

  abstractNote = {Reduced surface area targets were studied using an ultra-high intensity femtosecond laser in order to determine the effect of electron sheath field confinement on electron dynamics. X-ray emission due to energetic electrons was imaged using a Kα imaging crystal. Electrons were observed to travel along the surface of wire targets, and were slowed mainly by the induced fields. Targets with reduced surface areas were correlated with increased hot electron densities and proton energies. Furthermore, Hybrid Vlasov–Fokker–Planck simulations demonstrated increased electric sheath field strength in reduced surface area targets.},

  doi          = {10.1088/1367-2630/18/6/063020},

  journal      = {New Journal of Physics},

  number       = 6,

  volume       = 18,

  place        = {United Kingdom},

  year         = {Wed Jun 01 00:00:00 EDT 2016},

  month        = {Wed Jun 01 00:00:00 EDT 2016}

}

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