K-α x-ray measurements and their applicability for fast electron generation and transport studies in ultrashort intense laser foil interaction

被引：2
作者：
Mandal, T. [1 ,2 ]
Arora, V [2 ]
Moorti, A. [1 ,2 ]
Chakera, J. A. [1 ,2 ]
机构：
[1] Homi Bhabha Natl Inst, Training Sch Complex, Mumbai 400094, Maharashtra, India
[2] Raja Ramanna Ctr Adv Technol, Laser Plasma Div, Indore 452013, India
来源：
PLASMA PHYSICS AND CONTROLLED FUSION | 2021年 / 63卷 / 09期
关键词：
K-alpha x-ray measurements; fast electron generation and transport; ultrashort intense laser foil interaction; FEMTOSECOND LASER; SOLID INTERACTIONS; ACCELERATION;
D O I：
10.1088/1361-6587/ac0bc8
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
K-alpha x-ray measurements using a high-resolution highly annealed pyrolytic graphite crystal spectrograph have been performed for ultrashort intense laser foil interaction. Experiments were performed using Ti:sapphire laser of 25 fs duration, intensity of 1 x 10(19) W cm(-2) and 7 mu m Cu foil target. Using the observed laser-to-x-ray conversion, the fast electron conversion efficiency was estimated to be similar to 1%. Intensity scaling of x-ray conversion was used to establish the role of the J x B mechanism of fast electron generation. Furthermore, through parametric studies, the role of refluxing and reacceleration of electrons in x-ray generation is also established. Finally, the role of polarization (p vs. s) is also observed and briefly discussed.
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页数：8
相关论文
共 44 条
[1]   Bremsstrahlung emission profile from intense laser-solid interactions as a function of laser focal spot size [J].
Armstrong, C. D. ;
Brenner, C. M. ;
Zemaityte, E. ;
Scott, G. G. ;
Rusby, D. R. ;
Liao, G. ;
Liu, H. ;
Li, Y. ;
Zhang, Z. ;
Zhang, Y. ;
Zhu, B. ;
Bradford, P. ;
Woolsey, N. C. ;
Oliveira, P. ;
Spindloe, C. ;
Wang, W. ;
McKenna, P. ;
Neely, D. .
PLASMA PHYSICS AND CONTROLLED FUSION, 2019, 61 (03)
[2]   High photon flux Kα Mo x-ray source driven by a multi-terawatt femtosecond laser at 100 Hz [J].
Azamoum, Y. ;
Clady, R. ;
Ferre, A. ;
Gambari, M. ;
Uteza, O. ;
Sentis, M. .
OPTICS LETTERS, 2018, 43 (15) :3574-3577
[3]   Impact of the pulse contrast ratio on molybdenum Kα generation by ultrahigh intensity femtosecond laser solid interaction [J].
Azamoum, Y. ;
Tcheremiskine, V. ;
Clady, R. ;
Ferre, A. ;
Charmasson, L. ;
Uteza, O. ;
Sentis, M. .
SCIENTIFIC REPORTS, 2018, 8
[4]  
Beg FN, 1997, PHYS PLASMAS, V4, P447, DOI 10.1063/1.872103
[5]   Properties of laser-driven hard x-ray sources over a wide range of laser intensities [J].
Borm, Bjoern ;
Khaghani, Dimitri ;
Neumayer, Paul .
PHYSICS OF PLASMAS, 2019, 26 (02)
[6]   NOT-SO-RESONANT, RESONANT ABSORPTION [J].
BRUNEL, F .
PHYSICAL REVIEW LETTERS, 1987, 59 (01) :52-55
[7]   Evidence of enhanced effective hot electron temperatures in ultraintense laser-solid interactions due to reflexing [J].
Chen, H ;
Wilks, SC .
LASER AND PARTICLE BEAMS, 2005, 23 (04) :411-416
[8]   Study of x-ray emission enhancement via a high-contrast femtosecond laser interacting with a solid foil [J].
Chen, L. M. ;
Kando, M. ;
Xu, M. H. ;
Li, Y. T. ;
Koga, J. ;
Chen, M. ;
Xu, H. ;
Yuan, X. H. ;
Dong, Q. L. ;
Sheng, Z. M. ;
Bulanov, S. V. ;
Kato, Y. ;
Zhang, J. ;
Tajima, T. .
PHYSICAL REVIEW LETTERS, 2008, 100 (04)
[9]   Spatially resolved analysis of Kα x-ray emission from plasmas induced by a femtosecond weakly relativistic laser pulse at various polarizations [J].
Cristoforetti, G. ;
Anania, M. P. ;
Faenov, A. Ya. ;
Giulietti, A. ;
Giulietti, D. ;
Hansen, S. B. ;
Koester, P. ;
Labate, L. ;
Levato, T. ;
Pikuz, T. A. ;
Gizzi, L. A. .
PHYSICAL REVIEW E, 2013, 87 (02)
[10]   Laser absorption and hot electron temperature scalings in laser-plasma interactions [J].
Cui, Yun-Qian ;
Wang, Wei-Min ;
Sheng, Zheng-Ming ;
Li, Yu-Tong ;
Zhang, Jie .
PLASMA PHYSICS AND CONTROLLED FUSION, 2013, 55 (08)
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