Creation of a Spark by a Single Subnanosecond Laser Pulse

Alcock, A. J.; Richardson, Martin

doi:10.1103/physrevlett.21.667

Cited by 47 publications

(17 citation statements)

References 4 publications

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“…This high laser pulse contrast ensures that in our experimental conditions, no premature plasma formation occurs and the CPA pulse can be focused directly in the gas. In fact, at a maximum focused intensity of 10 20 W/cm 2 , with our ASE contrast, we can expect a precursor laser intensity on target below 10 11 W/cm 2 , which is below the plasma formation threshold in gases for laser pulses of sub-nanosecond duration [40], the typical duration of ASE. Therefore we can reasonably assume that, in our experimental conditions.…”

Section: The Sub-pw Flame Installationmentioning

confidence: 58%

Laser-Plasma Acceleration with FLAME and ILIL Ultraintense Lasers

et al. 2013

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Såo Paulo t9B8 /<- .-ll ! I il ll "0n üous a dit aussí que La uie est obecunítá" et dans ootre f,atígue ttous nápátez ce que disent Les Las. Et je Ðous dis que La oie est ráeLlement obscuyítá sauf, Lã où +L y a éLan, Et tout áLan est aueugle sauf Là où iL y a sauoiz,, Eþ tout saÐo¿y est uain sauf Là où iL g a tnauail, Et tout tyaÐa¿L est uíde sauf Là où it, y a amourj Et Lorsque tous tvaÐaiLLez azlec amour Ðous 1)ous Líez à uous-nâne, et Ltun ã Ltautz.e" et à Díeu.tl KhaLiL Gib z,an Ã, Gíana, fíLhínha da razão e do poz,que, que soube corajosamente eupo?t.a,? ausàncias e a pyesença maL dis-tz,ibuída, durante as ÐãT¿as etapas de realização desse tz,ab aLh o. Aos neus país e ã minha famíLía,pelo sacrífício da ausàncía imposta, pana a neaLização de um ídeal, ttf n Memotiamtl Ao neu írnão e amígo Una tese de doutorado, dificilmente é fruto de i déia isolada ou conquista individual , sendo, en geral, decorrên cia de u¡na linha de pesquisas, so¡nat6ria de esforços e de múfti-plas colaborações. Co¡no conseqtlência, desejamos registrar nesta página nossa homenagen e a nossa gratidão: Ao Professor Doutor José Vicente Valarelli, pela orientação cientÍfica e pelos preciosos conselhos, e dedicação que tornara¡n esse trabalho uma realidade' Ao Doutor François Delbove, a guen devenos todo a poio e incansáve1 colab.oração técnica-científica, durante a rea-lização dos trabalhos experinentais no "Centre d.e Recherche sur la synthèse et chinie des ¡ninéraux" do CNRS de orléans, França. Ao Professor Doutor Rainer A. Schultz-GUtt1er, pe los valiosos auxílios e sugestões durante a execução deste estu-do. Ao Professor Luiz Fernando de Carvalho, a quem di reta e indiretamente devemos nossa iniciação ã GeoquÍmica e ¡'line ralogia Experimental. Mestre, anigo e incentivador, cujo apoio, nos nonentos difÍceis, não pode ser esquecido. ttO amoz, ensina a não fícar do Lado bon de uma bz'iga podpe, Ensina d, enconþr'ay a briga b.oa: a briga peLa constz,ução de una noïq, ordem de ¿ntegyq.ção entz'e sub-jetíuo e objeþ¿Ðô, cíãncia e f,á, oriente e ocidente, politica e eaeíetãncía, justiça e Líbendade, na quaL há, maís d,?tè e menos conpetíção, naís uida e nenos morte. IJma peseoa prepaxada para o amo! é muíto maís pez,i goea paya, quaLquer LtaÍuA quo yep?essioo do que uma pessoa prepanada pa,ya a ódío, a guer.Ta. ou o combate, Esta é mais f,ã.cíL conbater. Anav á trans foz'mar a intenção en gesto moral, ou seia, em ato que possâ. eez. un¿Ðersc¿Lizado aen dano, perda ou sofz.imento.tl Artuy. da Iã.to La AGRADEC IMENTOS É con prazer que agradece¡nos a todos que nos ajuda ran a realizar esse trabalho, Ao Doutor Z.Johan, diretor do I'Centre de Recherche sur la synthèse et chinie des minéraux'r do CNRS-Orléans, França, por nos acolher naquele centro de pesquísa durante a realização dos trabalhos experinentais.

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Section: The Sub-pw Flame Installationmentioning

confidence: 58%

Laser-Plasma Acceleration with FLAME and ILIL Ultraintense Lasers

et al. 2013

View full text Add to dashboard Cite

show abstract

“…The first authors who succeeded in producing laser plasmas with help of the train of pulses sent out by a mode-locked laser were Alcock and Richardson (1968). They found that the plasma grows, starting in the focus of the focusing lens, in several steps towards the lens under the action of the laser pulses.…”

Section: Introductionmentioning

confidence: 99%

Shock waves and ionizing radiation plasmas produced by a mode-locked laser

Meyer¹,

Stritzke²

1977

J. Phys. D: Appl. Phys.

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The expansion of plasmas produced by a mode-locked Nd:glass laser has been studied. With help of the second harmonic radiation of the laser itself the shock waves in the initial stages after breakdown are recorded. With a streak camera the time development of the plasma depending on the gas pressure and the focal length of the focusing lens was studied in He, Ar, Kr, Xe, N2, CO2 and SF6. While the shock waves obey the well known relations for ideal shock waves, the stepwise plasma expansion towards the lens can be described by a simple ionization model.

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“…Finally, it is interesting to note that these general notions appear to qualitatively agree with streak camera data obtained in previous studies of optical breakdown in gases. 22 The velocity observed in that work was consistent 23 with the transport of energy outside the focal zone by energetic electrons.…”

Section: Electronssupporting

confidence: 64%

Studies of strong-field effects in multiphoton subpicosecond excited plasmas: Soft X-ray fluorescence and propagation

McPherson

Luk

Gibson

et al.

Lecture Notes in Physics

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Studies concerning two aspects of the strong-field multiphoton response of matter are discussed, namely, (1) the generation of excited states and (2) the propagation of extremely intense radiation in plasmas. Fluorescence in the 7 -79 nm region arising from excited ionic states produced in gas targets composed of the rare gases and N 2 is examined. Emissions from complex transition arrays stemming from open nd configurations in Kr and Xe are observed. Strong-field conditions are expected to produce significantly altered characteristics of propagation in plasmas which include the possibility of a new mode of channeled propagation.I.

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Creation of a Spark by a Single Subnanosecond Laser Pulse

Cited by 47 publications

References 4 publications

Laser-Plasma Acceleration with FLAME and ILIL Ultraintense Lasers

Laser-Plasma Acceleration with FLAME and ILIL Ultraintense Lasers

Shock waves and ionizing radiation plasmas produced by a mode-locked laser

Studies of strong-field effects in multiphoton subpicosecond excited plasmas: Soft X-ray fluorescence and propagation

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