European Conference on Laser Interaction with Matter最新文献_第2页

High-intensity laser-plasma experiments at LULI LULI的高强度激光等离子体实验

European Conference on Laser Interaction with Matter Pub Date : 2003-12-18 DOI: 10.1117/12.536768

C. Labaune, F. Amiranoff, C. Chenais-popovics, J. Gauthier, M. Koenig, E. Dalimier, A. Migus, C. Sauteret

引用次数: 0

Dependence of soft x-ray conversion on atomic composition in laser-produced plasma of copper-gold mix-Z targets 软x射线转换对铜-金- z靶激光等离子体中原子组成的依赖性

European Conference on Laser Interaction with Matter Pub Date : 2003-12-18 DOI: 10.1117/12.534265

P. Naik, J. A. Chakera, V. Arora, N. K. Gupta, S. Sailaja, S. R. Kumbhare, P. Gupta, B. K. Godwal

{"title":"Dependence of soft x-ray conversion on atomic composition in laser-produced plasma of copper-gold mix-Z targets","authors":"P. Naik, J. A. Chakera, V. Arora, N. K. Gupta, S. Sailaja, S. R. Kumbhare, P. Gupta, B. K. Godwal","doi":"10.1117/12.534265","DOIUrl":"https://doi.org/10.1117/12.534265","url":null,"abstract":"In the indirect scheme of ICF, a high-Z ablator is used as the inside wall material of the hohlraum cavity. This choice is made because a high-Z plasma is an efficient x-ray convertor, and it offers a high opacity to radiation conduction into the cavity wall. Recently it had been shown that a mixture of two or more high-Z elements can provide a higher opacity than that of any single materials used, and optimum composition was predicted from computer simulations. It is expected that such a wall will provide maximum conversion of absorbed laser energy into soft x-ray radiation. In this paper, we present a comparative experimental study of soft x-ray emission from copper-gold mix-Z planar targets of different atomic compositions irradiated at a laser intensity of ~1013 W/cm2 (λ = 0.532μm). Spectral features of the soft x-ray radiation were recorded using a transmission grating spectrograph. Maximum enhancement in radiation intensity in the spectral region ~ 40 - 120 Å was observed for a mix-Z target of atomic composition of Cu 0.57 - Au 0.43. This is in broad agreement with theoretical results of opacity calculations performed for different atomic compositions using a screened hydrogenic average atom model.","PeriodicalId":340981,"journal":{"name":"European Conference on Laser Interaction with Matter","volume":"175 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131849476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Mean opacities of LTE plasmas: detailed configuration accounting versus other approaches LTE等离子体的平均不透明度:详细的配置会计与其他方法

European Conference on Laser Interaction with Matter Pub Date : 2003-12-18 DOI: 10.1117/12.535961

E. Ivanov, V. Rozanov, Galina A. Vergunova

引用次数: 6

Recent progress in the development of capsule targets for the National Ignition Facility 国家点火装置胶囊靶研制的最新进展

European Conference on Laser Interaction with Matter Pub Date : 2003-12-18 DOI: 10.1117/12.537397

R. Cook, M. Anthamatten, J. P. Armstrong, S. Letts, R. McEachern, B. Mcquillan, M. Takagi

引用次数: 5

Ionization of atoms by short laser pulses: resonance and interference effects 短激光脉冲使原子电离:共振和干涉效应

European Conference on Laser Interaction with Matter Pub Date : 2003-12-18 DOI: 10.1117/12.536935

A. Kondorskiy, L. Presnyakov

{"title":"Ionization of atoms by short laser pulses: resonance and interference effects","authors":"A. Kondorskiy, L. Presnyakov","doi":"10.1117/12.536935","DOIUrl":"https://doi.org/10.1117/12.536935","url":null,"abstract":"Dynamics of the interactions of atoms with intense electromagnetic fields is considered. The theory of ionization and excitation of atoms by the short laser pulses is developed on the basis of the close-coupling approach for solving the time-dependent Schrodinger equation. Studies of the interactions of atoms with intense electromagnetic fields require the use all the continuous states of the system, without discretization of the continuum. The systematic investigations have been done in the case of femtosecond laser pulses with linear and circular polarization, for the different vlaues of the laser frequency, intensity and duration times. Interactions of the intermediate discrete states with the continuum (bound-free transitions) are found to be very important for structures of the energy spectra of the ejected electrons. It is shown that these bound-free transitions give the larger contributions than the rescattering process (free-free transitions) at the medium energies of the ejected electrons. The resonance and interference structures in populations of the discrete and continuum atomic states are displayed as functions of the laser pulse parameters in the case of the H-atoms and H-like ions.","PeriodicalId":340981,"journal":{"name":"European Conference on Laser Interaction with Matter","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125844611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Time-resolved spectroscopic study of laser-plasma interaction in experiments with burn-through targets 烧穿靶实验中激光-等离子体相互作用的时间分辨光谱研究

European Conference on Laser Interaction with Matter Pub Date : 2003-12-18 DOI: 10.1117/12.536572

George M. Yankovskii, V. N. Kondrashov, Garry V. Anastasiev, O. L. Dedova, Ildar K. Fasakhov, Viktor M. Petryakov

引用次数: 1

2D Lagrangian code ATLANT-HE for simulation of laser-plasma interaction with allowance for hot electron generation and transport 考虑热电子产生和输运的激光等离子体相互作用模拟的二维拉格朗日代码ATLANT-HE

European Conference on Laser Interaction with Matter Pub Date : 2003-12-18 DOI: 10.1117/12.536552

A. Iskakov, N. Demchenko, I. Lebo, V. Rozanov, V. Tishkin

{"title":"2D Lagrangian code ATLANT-HE for simulation of laser-plasma interaction with allowance for hot electron generation and transport","authors":"A. Iskakov, N. Demchenko, I. Lebo, V. Rozanov, V. Tishkin","doi":"10.1117/12.536552","DOIUrl":"https://doi.org/10.1117/12.536552","url":null,"abstract":"Hot electrons may significantly influence interaction of ultra short laser pulses with solids. Accurate consideration of resonant absorption of laser energy and hot electrons generation at a critical surface was achieved through the developed physical and mathematical models. 2D ray tracing algorithm has been developed to simulate laser beam refraction and Bremsstrahlung absorption with allowance for non-linear influence of a strong electromagnetic field. Hot electrons transport was considered as a straight-line flows weakening by a friction force calculated in the approximation of the average state of ionization. Developed models were coupled with 2D Lagrangian gas dynamic code \"ATLANT\" that takes into account non-linear heat transport. The developed program has been applied to simulate irradiations of Al foils by picosecond laser double pulses. Hot electrons transport and heating resulted in thin foil explosions. The transition from exploding foil regime to the ablative one with foil thickening has been simulated and analyzed at various values of laser light intensity.","PeriodicalId":340981,"journal":{"name":"European Conference on Laser Interaction with Matter","volume":"5228 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129195379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Harmonics generation in a plasma with anisotropic bi-Maxwellian distribution 各向异性双麦克斯韦分布等离子体中谐波的产生

European Conference on Laser Interaction with Matter Pub Date : 2003-12-18 DOI: 10.1117/12.536943

G. Ferrante, M. Zarcone, S. A. Uryupin

引用次数: 1

Plasma heating by CO2-laser pulses for efficient multicharged ion generation 用co2激光脉冲加热等离子体以产生高效的多电荷离子

European Conference on Laser Interaction with Matter Pub Date : 2003-12-18 DOI: 10.1117/12.536893

K. Makarov, D. D. Maluta, V. Roerich, Y. Satov, Y. Smakovskii, Andrei E. Stepanov

引用次数: 0

Theoretical models of hot dense plasmas for laser and heavy ion target designs 激光和重离子靶设计的热致密等离子体理论模型

European Conference on Laser Interaction with Matter Pub Date : 2003-12-18 DOI: 10.1117/12.535980

N. Orlov

引用次数: 0